publications | Denilson Barbosa

2024

Effective Trajectory Imputation using Simple Probabilistic Language Models

Hayat Sultan Mohammed, Mario Nascimento, and Denilson Barbosa

In 25th IEEE International Conference on Mobile Data Management, 2024
Improving Bengali and Hindi Large Language Models

Arif Shahriar, and Denilson Barbosa

In The 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING), 2024
Instant Messaging Platforms News Multi-Task Classification for Stance, Sentiment, and Discrimination Detection

Taras Ustyianovych, and Denilson Barbosa

In Third Ukrainian Natural Language Processing Workshop, co-located with LREC-COLING, 2024

2023

NLP Workbench: Efficient and Extensible Integration of State-of-the-art Text Mining Tools

Peiran Yao, Matej Kosmajac, Abeer Waheed, and 3 more authors

In Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics: System Demonstrations, May 2023

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NLP Workbench is a web-based platform for text mining that allows non-expert users to obtain semantic understanding of large-scale corpora using state-of-the-art text mining models. The platform is built upon latest pre-trained models and open source systems from academia that provide semantic analysis functionalities, including but not limited to entity linking, sentiment analysis, semantic parsing, and relation extraction. Its extensible design enables researchers and developers to smoothly replace an existing model or integrate a new one. To improve efficiency, we employ a microservice architecture that facilitates allocation of acceleration hardware and parallelization of computation. This paper presents the architecture of NLP Workbench and discusses the challenges we faced in designing it. We also discuss diverse use cases of NLP Work- bench and the benefits of using it over other approaches. The platform is under active devel- opment, with its source code released under the MIT license. A website and a short video demonstrating our platform are also available.
@inproceedings{yao-etal-2023-nlp, title = {{NLP} Workbench: Efficient and Extensible Integration of State-of-the-art Text Mining Tools}, author = {Yao, Peiran and Kosmajac, Matej and Waheed, Abeer and Guzhva, Kostyantyn and Hervieux, Natalie and Barbosa, Denilson}, booktitle = {Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics: System Demonstrations}, month = may, year = {2023}, address = {Dubrovnik, Croatia}, publisher = {Association for Computational Linguistics}, url = {https://aclanthology.org/2023.eacl-demo.3}, pages = {18--26}, bibtex_show = true }

Relational Extraction on Wikipedia Tables using Convolutional and Memory Networks

Arif Shahriar, Rohan Saha, and Denilson Barbosa

CoRR, May 2023

@article{DBLP:journals/corr/abs-2307-05827,
  author = {Shahriar, Arif and Saha, Rohan and Barbosa, Denilson},
  title = {Relational Extraction on Wikipedia Tables using Convolutional and
                    Memory Networks},
  journal = {CoRR},
  volume = {abs/2307.05827},
  year = {2023},
  url = {https://doi.org/10.48550/arXiv.2307.05827},
  doi = {10.48550/arXiv.2307.05827},
  eprinttype = {arXiv},
  eprint = {2307.05827},
  timestamp = {Mon, 28 Aug 2023 21:26:19 +0200},
  biburl = {https://dblp.org/rec/journals/corr/abs-2307-05827.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org},
  bibtex_show = true
}

2022

WordTies: Measuring Word Associations in Language Models via Constrained Sampling

Peiran Yao, Tobias Renwick, and Denilson Barbosa

In Findings of the Association for Computational Linguistics: EMNLP 2022, Dec 2022

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Word associations are widely used in psychology to provide insights on how humans perceive and understand concepts. Comparing word associations in language models (LMs) to those generated by human subjects can serve as a proxy to uncover embedded lexical and commonsense knowledge in language models. While much helpful work has been done applying direct metrics, such as cosine similarity, to help understand latent spaces, these metrics are symmetric, while human word associativity is asymmetric. We propose WordTies, an algorithm based on constrained sampling from LMs, which allows an asymmetric measurement of associated words, given a cue word as the input. Comparing to existing methods, word associations found by this method share more overlap with associations provided by humans, and observe the asymmetric property of human associations. To examine possible reasons behind associations, we analyze the knowledge and reasoning behind the word pairings as they are linked to lexical and commonsense knowledge graphs.When the knowledge about the nature of the word pairings is combined with a probability that the LM has learned that information, we have a new way to examine what information is captured in LMs.
@inproceedings{yao-etal-2022-wordties, title = {{W}ord{T}ies: Measuring Word Associations in Language Models via Constrained Sampling}, author = {Yao, Peiran and Renwick, Tobias and Barbosa, Denilson}, booktitle = {Findings of the Association for Computational Linguistics: EMNLP 2022}, month = dec, year = {2022}, address = {Abu Dhabi, United Arab Emirates}, publisher = {Association for Computational Linguistics}, url = {https://aclanthology.org/2022.findings-emnlp.440}, pages = {5959--5970}, bibtex_show = true }
Cree Corpus: A Collection of nêhiyawêwin Resources

Daniela Teodorescu, Josie Matalski, Delaney Lothian, and 2 more authors

In Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), May 2022

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Plains Cree (nêhiyawêwin) is an Indigenous language that is spoken in Canada and the USA. It is the most widely spoken dialect of Cree and a morphologically complex language that is polysynthetic, highly inflective, and agglutinative. It is an extremely low resource language, with no existing corpus that is both available and prepared for supporting the development of language technologies. To support nêhiyawêwin revitalization and preservation, we developed a corpus covering diverse genres, time periods, and texts for a variety of intended audiences. The data has been verified and cleaned; it is ready for use in developing language technologies for nêhiyawêwin. The corpus includes the corresponding English phrases or audio files where available. We demonstrate the utility of the corpus through its community use and its use to build language technologies that can provide the types of support that community members have expressed are desirable. The corpus is available for public use.
@inproceedings{teodorescu-etal-2022-cree, title = {{C}ree Corpus: A Collection of n{\^e}hiyaw{\^e}win Resources}, author = {Teodorescu, Daniela and Matalski, Josie and Lothian, Delaney and Barbosa, Denilson and Demmans Epp, Carrie}, booktitle = {Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)}, month = may, year = {2022}, address = {Dublin, Ireland}, publisher = {Association for Computational Linguistics}, url = {https://aclanthology.org/2022.acl-long.440}, doi = {10.18653/v1/2022.acl-long.440}, pages = {6354--6364}, bibtex_show = true }
HOPLoP: Multi-Hop Link Prediction over Knowledge Graph Embeddings

Varun Ranganathan, and Denilson Barbosa

World Wide Web, Mar 2022

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Large-scale Knowledge Graphs (KGs) support applications such as Web search and personal assistants and provide training data for numerous Natural Language Processing tasks. Nevertheless, building KGs with high accuracy and domain coverage remains difficult, and neither manual nor automatic efforts are up to par. Link Prediction (LP) is one of many tasks aimed at addressing this problem. Its goal is to find missing links between entities in the KG based on structural by exploiting regularities in the graph structure. Recent years have seen two approaches emerge: using KG embeddings, and modelling complex relations by exploiting correlations between individual links and longer paths connecting the same pair of entities. For the latter, state-of-the-art methods traverse the KG itself and are hampered both by incompleteness and skewed degree distributions found in most KGs, resulting in some entities being overly represented in the training set leading to poor generalization. We present HOPLoP: an efficient and effective multi-hop LP meta method that performs the equivalent to path traversals on the KG embedding space instead of the KG itself, marrying both ideas. We show how to train and tune our method with different underlying KG embeddings, and report on experiments on many benchmarks, showing both that HOPLoP improves each LP method on its own and that it consistently outperforms the previous state-of-the-art by a good margin. Finally, we describe a way to interpret paths generated by HOPLoP when used with TransE.
@article{RanganathanB22, author = {Ranganathan, Varun and Barbosa, Denilson}, title = {HOPLoP: Multi-Hop Link Prediction over Knowledge Graph Embeddings}, year = {2022}, publisher = {Kluwer Academic Publishers}, address = {USA}, volume = {25}, number = {2}, issn = {1386-145X}, url = {https://doi.org/10.1007/s11280-021-00972-6}, doi = {10.1007/s11280-021-00972-6}, journal = {World Wide Web}, month = mar, pages = {1037–1065}, numpages = {29}, keywords = {Link Prediction, Knowledge Graph Embeddings, Multi-hop reasoning}, bibtex_show = true }
The Effect of Fine-tuned Word Embedding Techniques on the Accuracy of Automated Essay Scoring Systems Using Neural Networks

Tahereh Firoozi, Okan Bulut, Carrie Demmans Epp, and 2 more authors

Journal of Applied Testing Technology, Mar 2022

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Automated Essay Scoring (AES) using neural networks has helped increase the accuracy and efficiency of scoring students’ written tasks. Generally, the improved accuracy of neural network approaches has been attributed to the use of modern word embedding techniques. However, which word embedding techniques produce higher accuracy in AES systems with neural networks is still unclear. In addition, the importance of fine-tuned word embedding techniques on the accuracy of the AES systems is not justified yet. This study investigates the effect of fine-tuned modern word embedding techniques, including pretrained GloVe and Word2Vec, on the accuracy of a deep learning AES model using a Long-Short Term Memory (LSTM) network. The dataset used in this study consisted of 12,978 essays introduced in the 2012 Automated Scoring Assessment Prize (ASAP) competition. Results show that fine-tuned word embedding techniques could significantly improve the accuracy of the AES (QWK= 0.79) compared with the baseline model without pretrained embeddings (QWK = 0.73). Moreover, when used in AES, the pre-trained GloVe word embedding (QWK= 0.79) outperformed Word2Vec (QWK = 0.77). The results of this study can guide future AES studies in selecting more appropriate word representations and how to fine-tune the word embedding techniques for scoring-related tasks.
@article{JATT2022, author = {Firoozi, Tahereh and Bulut, Okan and Epp, Carrie Demmans and Naeimabadi, Ali and Barbosa, Denilson}, title = {The Effect of Fine-tuned Word Embedding Techniques on the Accuracy of Automated Essay Scoring Systems Using Neural Networks}, journal = {Journal of Applied Testing Technology}, volume = {23}, number = {0}, pages = {21–29}, year = {2022}, keywords = {Automated Essay Scoring, Glove Embedding, Neural Networks, Word Embeddings, Word2Vec}, url = {https://jattjournal.net/index.php/atp/article/view/172687}, bibtex_show = true }

Energy to contest? Emotional and multimodal contestation of energy markets

Lianne M. Lefsrud, Candelario A. Gutierrez Gutierrez, Eleni Stroulia, and 2 more authors

In Proceedings of the 38th EGOS Colloquium, Mar 2022

Bib

@inproceedings{AI4BuzEGOS2022,
  author = {Lefsrud, Lianne M. and Gutierrez, Candelario A. Gutierrez and Stroulia, Eleni and Gehman, Joel and Barbosa, Denilson},
  title = {Energy to contest? Emotional and multimodal contestation of energy markets},
  booktitle = {Proceedings of the 38th EGOS Colloquium},
  publisher = { European Group for Organizational Studies},
  year = {2022},
  bibtex_show = true
}

Web Services for Voyant: LINCS, Voyant and NSS

Geoffrey Rockwell, Natalie Hervieux, Huma Zafar, and 6 more authors

In Proceedings of DIGITAL HUMANITIES 2022, Mar 2022

Bib

@inproceedings{DH2022,
  author = {Rockwell, Geoffrey and Hervieux, Natalie and Zafar, Huma and Land, Kaylin and MacDonald, Andrew and Barbosa, Denilson and Frizzera, Luciano and Ilovan, Mihaela and Brown, Susan},
  title = {Web Services for Voyant: LINCS, Voyant and NSS},
  booktitle = {Proceedings of DIGITAL HUMANITIES 2022},
  year = {2022},
  publisher = {Carnegie Mellon University Press},
  bibtex_show = true
}

2021

Knowledge Graph Embedding for Link Prediction: A Comparative Analysis

Andrea Rossi, Denilson Barbosa, Donatella Firmani, and 2 more authors

ACM Trans. Knowl. Discov. Data, Jan 2021

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Knowledge Graphs (KGs) have found many applications in industrial and in academic settings, which in turn, have motivated considerable research efforts towards large-scale information extraction from a variety of sources. Despite such efforts, it is well known that even the largest KGs suffer from incompleteness; Link Prediction (LP) techniques address this issue by identifying missing facts among entities already in the KG. Among the recent LP techniques, those based on KG embeddings have achieved very promising performance in some benchmarks. Despite the fast-growing literature on the subject, insufficient attention has been paid to the effect of the design choices in those methods. Moreover, the standard practice in this area is to report accuracy by aggregating over a large number of test facts in which some entities are vastly more represented than others; this allows LP methods to exhibit good results by just attending to structural properties that include such entities, while ignoring the remaining majority of the KG. This analysis provides a comprehensive comparison of embedding-based LP methods, extending the dimensions of analysis beyond what is commonly available in the literature. We experimentally compare the effectiveness and efficiency of 18 state-of-the-art methods, consider a rule-based baseline, and report detailed analysis over the most popular benchmarks in the literature.
@article{RossiBFMM21, author = {Rossi, Andrea and Barbosa, Denilson and Firmani, Donatella and Matinata, Antonio and Merialdo, Paolo}, title = {Knowledge Graph Embedding for Link Prediction: A Comparative Analysis}, year = {2021}, publisher = {Association for Computing Machinery}, address = {New York, NY, USA}, volume = {15}, number = {2}, issn = {1556-4681}, url = {https://doi.org/10.1145/3424672}, doi = {10.1145/3424672}, journal = {ACM Trans. Knowl. Discov. Data}, month = jan, articleno = {14}, numpages = {49}, keywords = {knowledge graph embeddings, link prediction, Knowledge graphs, comparative analysis}, bibtex_show = true }

Typing Errors in Factual Knowledge Graphs: Severity and Possible Ways Out

Peiran Yao, and Denilson Barbosa

In WWW ’21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia, April 19-23, 2021, Jan 2021

Bib

@inproceedings{YaoB21,
  author = {Yao, Peiran and Barbosa, Denilson},
  editor = {Leskovec, Jure and Grobelnik, Marko and Najork, Marc and Tang, Jie and Zia, Leila},
  title = {Typing Errors in Factual Knowledge Graphs: Severity and Possible Ways
                 Out},
  booktitle = {{WWW} '21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia,
                 April 19-23, 2021},
  pages = {3305--3313},
  publisher = {{ACM} / {IW3C2}},
  year = {2021},
  url = {https://doi.org/10.1145/3442381.3449977},
  doi = {10.1145/3442381.3449977},
  timestamp = {Mon, 07 Jun 2021 14:20:06 +0200},
  biburl = {https://dblp.org/rec/conf/www/YaoB21.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org},
  bibtex_show = true
}

Detection and Identification of Obfuscated Obscene Language with Character Level Transformers

Tobias Renwick, and Denilson Barbosa

In Proceedings of the 34th Canadian Conference on Artificial Intelligence, Canadian AI 2021, Jan 2021

Bib

@inproceedings{RenwickBarbosa21,
  author = {Renwick, Tobias and Barbosa, Denilson},
  title = {Detection and Identification of Obfuscated Obscene Language with Character Level Transformers},
  booktitle = {Proceedings of the 34th Canadian Conference on Artificial Intelligence, Canadian {AI} 2021},
  pages = {8 pp},
  year = {2021},
  bibtex_show = true
}

Analyzing and visualizing Twitter conversations

Candelario A. Gutierrez Gutierrez, Andrea M. Whittaker, Katherine Mae Patenio, and 4 more authors

In CASCON ’21: Proceedings of the 31st Annual International Conference on Computer Science and Software Engineering, Toronto, Ontario, Canada, November 22 - 25, 2021, Jan 2021

Bib

@inproceedings{GutierrezWPGLBS21,
  author = {Gutierrez, Candelario A. Gutierrez and Whittaker, Andrea M. and Patenio, Katherine Mae and Gehman, Joel and Lefsrud, Lianne M. and Barbosa, Denilson and Stroulia, Eleni},
  title = {Analyzing and visualizing Twitter conversations},
  booktitle = {{CASCON} '21: Proceedings of the 31st Annual International Conference
                 on Computer Science and Software Engineering, Toronto, Ontario, Canada,
                 November 22 - 25, 2021},
  pages = {4--13},
  publisher = {{ACM}},
  year = {2021},
  url = {https://dl.acm.org/doi/10.5555/3507788.3507791},
  doi = {10.5555/3507788.3507791},
  bibtex_show = true
}

2020

Neural Relation Extraction on Wikipedia Tables for Augmenting Knowledge Graphs

Erin Macdonald, and Denilson Barbosa

In Proceedings of the 29th ACM International Conference on Information & Knowledge Management, Jan 2020

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Knowledge Graph Augmentation is the task of adding missing facts to an incomplete knowledge graph to improve its effectiveness in applications such as web search and question answering. State-of-the-art methods rely on information extraction from running text, leaving rich sources of facts such as tables behind. We help close this gap with a neural method that uses contextual information surrounding a table in a Wikipedia article to extract relations between entities appearing in the same row of a table or between the entity of said article and entities appearing in the table. We trained and tested our method on a much larger dataset compared to previous work which we have made public and observed experimentally that our method is very promising for the task.
@inproceedings{cikm2020, author = {Macdonald, Erin and Barbosa, Denilson}, title = {Neural Relation Extraction on Wikipedia Tables for Augmenting Knowledge Graphs}, year = {2020}, isbn = {9781450368599}, publisher = {Association for Computing Machinery}, address = {New York, NY, USA}, url = {https://doi.org/10.1145/3340531.3412164}, booktitle = {Proceedings of the 29th ACM International Conference on Information {\&} Knowledge Management}, pages = {2133–2136}, numpages = {4}, bibtex_show = true }

Understanding DevOps Education with Grounded Theory

Candy Pang, Abram Hindle, and Denilson Barbosa

In Proceedings of the 41st International Conference on Software Engineering: Software Engineering Education and Training, Jan 2020

Bib

@inproceedings{icse2020,
  author = {Pang, Candy and Hindle, Abram and Barbosa, Denilson},
  title = {Understanding DevOps Education with Grounded Theory},
  booktitle = {Proceedings of the 41st International Conference on Software Engineering: Software Engineering Education and Training},
  year = {2020},
  url = {https://2020.icse-conferences.org/details/icse-2020-Software-Engineering-Education-and-Training/13/Understanding-DevOps-Education-with-Grounded-Theory},
  bibtex_show = true
}

GrCluster: a score function to model hierarchy in knowledge graph embeddings

Varun Ranganathan, Siddharth Suresh, Yash Mathur, and 2 more authors

In SAC ’20: The 35th ACM/SIGAPP Symposium on Applied Computing, online event, [Brno, Czech Republic], March 30 - April 3, 2020, Jan 2020

Bib

@inproceedings{sac_RanganathanSMSB20,
  author = {Ranganathan, Varun and Suresh, Siddharth and Mathur, Yash and Subramanyam, Natarajan and Barbosa, Denilson},
  editor = {Hung, Chih{-}Cheng and Cern{\'{y}}, Tom{\'{a}}s and Shin, Dongwan and Bechini, Alessio},
  title = {GrCluster: a score function to model hierarchy in knowledge graph
                 embeddings},
  booktitle = {{SAC} '20: The 35th {ACM/SIGAPP} Symposium on Applied Computing, online
                 event, [Brno, Czech Republic], March 30 - April 3, 2020},
  pages = {964--971},
  publisher = {{ACM}},
  year = {2020},
  url = {https://doi.org/10.1145/3341105.3373978},
  doi = {10.1145/3341105.3373978},
  timestamp = {Thu, 02 Apr 2020 17:08:04 +0200},
  biburl = {https://dblp.org/rec/conf/sac/RanganathanSMSB20.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org},
  bibtex_show = true
}

Knowledge Graph Embedding for Link Prediction: A Comparative Analysis

Andrea Rossi, Donatella Firmani, Antonio Matinata, and 2 more authors

CoRR, Jan 2020

Bib

@article{corr_abs-2002-00819,
  author = {Rossi, Andrea and Firmani, Donatella and Matinata, Antonio and Merialdo, Paolo and Barbosa, Denilson},
  title = {Knowledge Graph Embedding for Link Prediction: {A} Comparative Analysis},
  journal = {CoRR},
  volume = {abs/2002.00819},
  year = {2020},
  url = {https://arxiv.org/abs/2002.00819},
  archiveprefix = {arXiv},
  eprint = {2002.00819},
  timestamp = {Mon, 10 Feb 2020 15:12:57 +0100},
  biburl = {https://dblp.org/rec/journals/corr/abs-2002-00819.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org},
  bibtex_show = true
}

2019

KnowledgeNet: A Benchmark Dataset for Knowledge Base Population

Filipe Mesquita, Matteo Cannaviccio, Jordan Schmidek, and 2 more authors

In Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP), Nov 2019

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KnowledgeNet is a benchmark dataset for the task of automatically populating a knowledge base (Wikidata) with facts expressed in natural language text on the web. KnowledgeNet provides text exhaustively annotated with facts, thus enabling the holistic end-to-end evaluation of knowledge base population systems as a whole, unlike previous benchmarks that are more suitable for the evaluation of individual subcomponents (e.g., entity linking, relation extraction). We discuss five baseline approaches, where the best approach achieves an F1 score of 0.50, significantly outperforming a traditional approach by 79% (0.28). However, our best baseline is far from reaching human performance (0.82), indicating our dataset is challenging. The KnowledgeNet dataset and baselines are available at https://github.com/diffbot/knowledge-net
@inproceedings{emnlp2019_KnowledgeNet, title = {{K}nowledge{N}et: A Benchmark Dataset for Knowledge Base Population}, author = {Mesquita, Filipe and Cannaviccio, Matteo and Schmidek, Jordan and Mirza, Paramita and Barbosa, Denilson}, booktitle = {Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)}, month = nov, year = {2019}, address = {Hong Kong, China}, publisher = {Association for Computational Linguistics}, url = {https://www.aclweb.org/anthology/D19-1069}, doi = {10.18653/v1/D19-1069}, pages = {749--758}, bibtex_show = true }

Detecting and Correcting Typing Errors in DBpedia

Daniel Caminhas, Daniel Cones, Natalie Hervieux, and 1 more author

In Proceedings of the 1st International Workshop on Challenges and Experiences from Data Integration to Knowledge Graphs co-located with the 25th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining (KDD 2019), Anchorage, Alaska, August 5, 2019, Nov 2019

Bib

@inproceedings{kdd_CaminhasCHB19,
  author = {Caminhas, Daniel and Cones, Daniel and Hervieux, Natalie and Barbosa, Denilson},
  editor = {Firmani, Donatella and Crescenzi, Valter and Angelis, Andrea De and Dong, Xin Luna and Mazzei, Maurizio and Merialdo, Paolo and Srivastava, Divesh},
  title = {Detecting and Correcting Typing Errors in DBpedia},
  booktitle = {Proceedings of the 1st International Workshop on Challenges and Experiences
                 from Data Integration to Knowledge Graphs co-located with the 25th
                 {ACM} {SIGKDD} International Conference on Knowledge Discovery {\&}
                 Data Mining {(KDD} 2019), Anchorage, Alaska, August 5, 2019},
  series = {{CEUR} Workshop Proceedings},
  volume = {2512},
  publisher = {CEUR-WS.org},
  year = {2019},
  url = {http://ceur-ws.org/Vol-2512/paper6.pdf},
  timestamp = {Wed, 12 Feb 2020 16:44:16 +0100},
  biburl = {https://dblp.org/rec/conf/kdd/CaminhasCHB19.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org},
  bibtex_show = true
}

Detecting and Correcting Typing Errors in DBpedia

Daniel Caminhas, Daniel Cones, Natalie Hervieux, and 1 more author

In Proceedings of the International Workshop on Challenges and Experiences From Data Integration to Knowledge Graphs, Nov 2019

Bib

@inproceedings{di2kg2019_Caminhas,
  author = {Caminhas, Daniel and Cones, Daniel and Hervieux, Natalie and Barbosa, Denilson},
  title = {Detecting and Correcting Typing Errors in DBpedia},
  pages = {4pp},
  year = {2019},
  booktitle = {Proceedings of the International Workshop on Challenges and Experiences From Data Integration to Knowledge Graphs},
  publisher = {ACM},
  bibtex_show = true
}

Connecting Language and Knowledge with Heterogeneous Representations for Neural Relation Extraction (preprint)

Peng Xu, and Denilson Barbosa

CoRR, Nov 2019

Bib

@article{Corr_abs-1903-10126,
  author = {Xu, Peng and Barbosa, Denilson},
  title = {Connecting Language and Knowledge with Heterogeneous Representations
                 for Neural Relation Extraction (preprint)},
  journal = {CoRR},
  volume = {abs/1903.10126},
  year = {2019},
  url = {http://arxiv.org/abs/1903.10126},
  archiveprefix = {arXiv},
  eprint = {1903.10126},
  timestamp = {Mon, 01 Apr 2019 14:07:37 +0200},
  biburl = {https://dblp.org/rec/bib/journals/corr/abs-1903-10126},
  bibsource = {dblp computer science bibliography, https://dblp.org},
  bibtex_show = true
}

Connecting Language and Knowledge with Heterogeneous Representations for Neural Relation Extraction

Peng Xu, and Denilson Barbosa

In Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers), Jun 2019

Abs Bib

Knowledge Bases (KBs) require constant updating to reflect changes to the world they represent. For general purpose KBs, this is often done through Relation Extraction (RE), the task of predicting KB relations expressed in text mentioning entities known to the KB. One way to improve RE is to use KB Embeddings (KBE) for link prediction. However, despite clear connections between RE and KBE, little has been done toward properly unifying these models systematically. We help close the gap with a framework that unifies the learning of RE and KBE models leading to significant improvements over the state-of-the-art in RE. The code is available at https://github.com/billy-inn/HRERE.
@inproceedings{xu-barbosa-2019-connecting, title = {Connecting Language and Knowledge with Heterogeneous Representations for Neural Relation Extraction}, author = {Xu, Peng and Barbosa, Denilson}, booktitle = {Proceedings of the 2019 Conference of the North {A}merican Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers)}, month = jun, year = {2019}, address = {Minneapolis, Minnesota}, publisher = {Association for Computational Linguistics}, url = {https://www.aclweb.org/anthology/N19-1323}, pages = {3201--3206}, bibtex_show = true }

2018

Neural Fine-Grained Entity Type Classification with Hierarchy-Aware Loss

Peng Xu, and Denilson Barbosa

In Proceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long Papers), Jun 2018

Abs Bib PDF

The task of Fine-grained Entity Type Classification (FETC) consists of assigning types from a hierarchy to entity mentions in text. Existing methods rely on distant supervision and are thus susceptible to noisy labels that can be out-of-context or overly-specific for the training sentence. Previous methods that attempt to address these issues do so with heuristics or with the help of hand-crafted features. Instead, we propose an end-to-end solution with a neural network model that uses a variant of cross-entropy loss function to handle out-of-context labels, and hierarchical loss normalization to cope with overly-specific ones. Also, previous work solve FETC a multi-label classification followed by ad-hoc post-processing. In contrast, our solution is more elegant: we use public word embeddings to train a single-label that jointly learns representations for entity mentions and their context. We show experimentally that our approach is robust against noise and consistently outperforms the state-of-the-art on established benchmarks for the task.
@inproceedings{xu-barbosa-2018-neural, title = {Neural Fine-Grained Entity Type Classification with Hierarchy-Aware Loss}, author = {Xu, Peng and Barbosa, Denilson}, booktitle = {Proceedings of the 2018 Conference of the North {A}merican Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long Papers)}, month = jun, year = {2018}, address = {New Orleans, Louisiana}, publisher = {Association for Computational Linguistics}, url = {https://www.aclweb.org/anthology/papers/N/N18/N18-1002/}, doi = {10.18653/v1/N18-1002}, pages = {16--25}, bibtex_show = true }

Investigations on Knowledge Base Embedding for Relation Prediction and Extraction

Peng Xu, and Denilson Barbosa

CoRR, Jun 2018

Bib

@article{Corr_abs-1802-02114,
  author = {Xu, Peng and Barbosa, Denilson},
  title = {Investigations on Knowledge Base Embedding for Relation Prediction
                 and Extraction},
  journal = {CoRR},
  volume = {abs/1802.02114},
  year = {2018},
  url = {http://arxiv.org/abs/1802.02114},
  archiveprefix = {arXiv},
  eprint = {1802.02114},
  bibtex_show = true
}

Neural Fine-Grained Entity Type Classification with Hierarchy-Aware Loss (Preprint)

Peng Xu, and Denilson Barbosa

CoRR, Jun 2018

Bib

@article{Corr_abs-1803-03378,
  author = {Xu, Peng and Barbosa, Denilson},
  title = {Neural Fine-Grained Entity Type Classification with Hierarchy-Aware Loss (Preprint)},
  journal = {CoRR},
  volume = {abs/1803.03378},
  year = {2018},
  url = {http://arxiv.org/abs/1803.03378},
  archiveprefix = {arXiv},
  eprint = {1803.03378},
  bibtex_show = true
}

Leveraging Wikipedia Table Schemas for Knowledge Graph Augmentation

Matteo Cannaviccio, Lorenzo Ariemma, Denilson Barbosa, and 1 more author

In Proceedings of the 21st International Workshop on Web and Databases, Houston, TX, USA, June 10th, 2018, Jun 2018

Bib

@inproceedings{CannaviccioABM_WebDB2018,
  author = {Cannaviccio, Matteo and Ariemma, Lorenzo and Barbosa, Denilson and Merialdo, Paolo},
  title = {Leveraging Wikipedia Table Schemas for Knowledge Graph Augmentation},
  booktitle = {Proceedings of the 21st International Workshop on Web and Databases,
                 Houston, TX, USA, June 10th, 2018},
  pages = {5:1-5:6},
  publisher = {{ACM}},
  year = {2018},
  url = {http://doi.acm.org/10.1145/3201463.3201468},
  bibtex_show = true
}

Matching Resumes to Job Descriptions with Stacked Models

Peng Xu, and Denilson Barbosa

In Advances in Artificial Intelligence - 31st Canadian Conference on Artificial Intelligence, Canadian AI 2018, Toronto, ON, Canada, May 8-11, 2018, Proceedings, Jun 2018

Bib

@inproceedings{XuBarbosa_CanAI_2018,
  author = {Xu, Peng and Barbosa, Denilson},
  title = {Matching Resumes to Job Descriptions with Stacked Models},
  booktitle = {Advances in Artificial Intelligence - 31st Canadian Conference on
                 Artificial Intelligence, Canadian {AI} 2018, Toronto, ON, Canada,
                 May 8-11, 2018, Proceedings},
  pages = {304--309},
  year = {2018},
  doi = {10.1007/978-3-319-89656-4_31},
  bibtex_show = true
}

Towards Annotating Relational Data on the Web with Language Models

Matteo Cannaviccio, Denilson Barbosa, and Paolo Merialdo

In Proceedings of The Web Conference 2018, Jun 2018

Bib PDF

@inproceedings{Cannaviccio_et_al_2018,
  author = {Cannaviccio, Matteo and Barbosa, Denilson and Merialdo, Paolo},
  title = {Towards Annotating Relational Data on the Web with Language Models},
  booktitle = {Proceedings of The Web Conference 2018},
  pages = {1307--1316},
  year = {2018},
  doi = {10.1145/3178876.3186029},
  bibtex_show = true
}

Robust named entity disambiguation with random walks

Zhaochen Guo, and Denilson Barbosa

Semantic Web, Jun 2018

Bib PDF

@article{Guo_Barbosa_2018,
  author = {Guo, Zhaochen and Barbosa, Denilson},
  title = {Robust named entity disambiguation with random walks},
  journal = {Semantic Web},
  volume = {9},
  number = {4},
  pages = {459--479},
  year = {2018},
  doi = {10.3233/SW-170273},
  bibtex_show = true
}

2016

Relationship Queries on Extended Knowledge Graphs

Mohamed Yahya, Denilson Barbosa, Klaus Berberich, and 2 more authors

In Proceedings of the Ninth ACM International Conference on Web Search and Data Mining, San Francisco, CA, USA, February 22-25, 2016, Jun 2016

Bib PDF

@inproceedings{Yahya_etal_WSDM2016,
  author = {Yahya, Mohamed and Barbosa, Denilson and Berberich, Klaus and Wang, Qiuyue and Weikum, Gerhard},
  title = {Relationship Queries on Extended Knowledge Graphs},
  booktitle = {Proceedings of the Ninth {ACM} International Conference on Web Search
                 and Data Mining, San Francisco, CA, USA, February 22-25, 2016},
  pages = {605--614},
  publisher = {{ACM}},
  year = {2016},
  doi = {10.1145/2835776.2835795},
  timestamp = {Mon, 08 Feb 2016 15:38:27 +0100},
  biburl = {http://dblp.uni-trier.de/rec/bib/conf/wsdm/YahyaBBWW16},
  bibsource = {dblp computer science bibliography, http://dblp.org},
  bibtex_show = true
}

Hadoop energy consumption reduction with hybrid HDFS

Ivanilton Polato, Denilson Barbosa, Abram Hindle, and 1 more author

In Proceedings of the 31st Annual ACM Symposium on Applied Computing, Pisa, Italy, April 4-8, 2016, Jun 2016

Bib

@inproceedings{PolatoBHK_SAC2016,
  author = {Polato, Ivanilton and Barbosa, Denilson and Hindle, Abram and Kon, Fabio},
  editor = {Ossowski, Sascha},
  title = {Hadoop energy consumption reduction with hybrid {HDFS}},
  booktitle = {Proceedings of the 31st Annual {ACM} Symposium on Applied Computing,
                 Pisa, Italy, April 4-8, 2016},
  pages = {406--411},
  publisher = {{ACM}},
  year = {2016},
  doi = {10.1145/2851613.2851623},
  timestamp = {Mon, 06 Jun 2016 18:51:39 +0200},
  biburl = {http://dblp.uni-trier.de/rec/bib/conf/sac/PolatoBHK16},
  bibsource = {dblp computer science bibliography, http://dblp.org},
  bibtex_show = true
}

Accurate fact harvesting from natural language text in wikipedia with Lector

Matteo Cannaviccio, Denilson Barbosa, and Paolo Merialdo

In Proceedings of the 19th International Workshop on Web and Databases, San Francisco, CA, USA, June 26, 2016, Jun 2016

Bib

@inproceedings{CannaviccioBM_WebDB2016,
  author = {Cannaviccio, Matteo and Barbosa, Denilson and Merialdo, Paolo},
  title = {Accurate fact harvesting from natural language text in wikipedia with
                 Lector},
  booktitle = {Proceedings of the 19th International Workshop on Web and Databases,
                 San Francisco, CA, USA, June 26, 2016},
  pages = {9},
  publisher = {{ACM}},
  year = {2016},
  doi = {10.1145/2932194.2932203},
  timestamp = {Mon, 20 Jun 2016 08:34:57 +0200},
  biburl = {http://dblp.uni-trier.de/rec/bib/conf/webdb/CannaviccioBM16},
  bibsource = {dblp computer science bibliography, http://dblp.org},
  bibtex_show = true
}

2015

Hadoop branching: Architectural impacts on energy and performance

Ivanilton Polato, Denilson Barbosa, Abram Hindle, and 1 more author

In Sixth International Green and Sustainable Computing Conference, IGSC 2015, Las Vegas, NV, USA, December 14-16, 2015, Jun 2015

Bib

@inproceedings{PolatoBHK_Green2015,
  author = {Polato, Ivanilton and Barbosa, Denilson and Hindle, Abram and Kon, Fabio},
  title = {Hadoop branching: Architectural impacts on energy and performance},
  booktitle = {Sixth International Green and Sustainable Computing Conference, {IGSC}
                 2015, Las Vegas, NV, USA, December 14-16, 2015},
  pages = {1--4},
  publisher = {{IEEE} Computer Society},
  year = {2015},
  doi = {10.1109/IGCC.2015.7393709},
  timestamp = {Fri, 29 Apr 2016 12:25:57 +0200},
  biburl = {http://dblp.uni-trier.de/rec/bib/conf/green/PolatoBHK15},
  bibsource = {dblp computer science bibliography, http://dblp.org},
  bibtex_show = true
}

Identifying Controversial Wikipedia Articles Using Editor Collaboration Networks

Hoda Sepehri-Rad, and Denilson Barbosa

ACM TIST, Jun 2015

Bib

@article{Rad_Barbosa_TIST2015,
  author = {Sepehri-Rad, Hoda and Barbosa, Denilson},
  doi = {10.1145/2630075},
  journal = {ACM TIST},
  number = {1},
  pages = {5},
  timestamp = {Wed, 15 Apr 2015 13:00:07 +0200},
  title = {Identifying Controversial Wikipedia Articles Using Editor Collaboration Networks},
  volume = {6},
  year = {2015},
  bibtex_show = true
}

Inferencing in Information Extraction: Techniques and Applications

Denilson Barbosa, Haixun Wang, and Cong Yu

In IEEE 31st International Conference on Data Engineering, Jun 2015

PDF

Advances in Artificial Intelligence - 28th Canadian Conference on Artificial Intelligence, Canadian AI 2015, Halifax, Nova Scotia, Canada, June 2-5, 2015, Proceedings

Jun 2015

Bib

@proceedings{Proc_Canadian_AI_2015,
  bibsource = {dblp computer science bibliography, http://dblp.org},
  doi = {10.1007/978-3-319-18356-5},
  editor = {Barbosa, Denilson and Milios, Evangelos E.},
  isbn = {978-3-319-18355-8},
  publisher = {Springer},
  series = {Lecture Notes in Computer Science},
  timestamp = {Wed, 29 Apr 2015 14:24:22 +0200},
  title = {Advances in Artificial Intelligence - 28th Canadian Conference on Artificial Intelligence, Canadian {AI} 2015, Halifax, Nova Scotia, Canada, June 2-5, 2015, Proceedings},
  volume = {9091},
  year = {2015},
  bibtex_show = true
}

Entity Recognition and Linking on Tweets with Random Walks

Zhaochen Guo, and Denilson Barbosa

In Proceedings of the the 5th Workshop on Making Sense of Microposts co-located with the 24th International World Wide Web Conference, Florence, Italy, May 18th, 2015., Jun 2015

Bib PDF

@inproceedings{Guo_Barbosa_MSM2015,
  author = {Guo, Zhaochen and Barbosa, Denilson},
  booktitle = {Proceedings of the the 5th Workshop on Making Sense of Microposts co-located with the 24th International World Wide Web Conference, Florence, Italy, May 18th, 2015.},
  pages = {57--58},
  title = {Entity Recognition and Linking on Tweets with Random Walks},
  url = {http://dblp.uni-trier.de/rec/bibtex/conf/msm/GuoB15},
  year = {2015},
  bibtex_show = true
}

Hybrid HDFS: decreasing energy consumption and speeding up Hadoop using SSDs

Ivanilton Polato, Denilson Barbosa, Abram Hindle, and 1 more author

PeerJ PrePrints, Jun 2015

Bib

@article{PolatoBHK_PeerJ2015,
  author = {Polato, Ivanilton and Barbosa, Denilson and Hindle, Abram and Kon, Fabio},
  title = {Hybrid {HDFS:} decreasing energy consumption and speeding up Hadoop
                 using SSDs},
  journal = {PeerJ PrePrints},
  volume = {3},
  pages = {e1320},
  year = {2015},
  doi = {10.7287/peerj.preprints.1320v1},
  timestamp = {Wed, 02 Sep 2015 19:49:32 +0200},
  biburl = {http://dblp.uni-trier.de/rec/bib/journals/peerjpre/PolatoBHK15},
  bibsource = {dblp computer science bibliography, http://dblp.org},
  bibtex_show = true
}

2014

Robust Entity Linking via Random Walks

Zhaochen Guo, and Denilson Barbosa

In Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management, CIKM 2014, Shanghai, China, November 3-7, 2014, Jun 2014

Entity linking with a unified semantic representation

Zhaochen Guo, and Denilson Barbosa

In 23rd International World Wide Web Conference, WWW ’14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume, Jun 2014

Bib

@inproceedings{Guo_Barbosa_WWW2014,
  author = {Guo, Zhaochen and Barbosa, Denilson},
  booktitle = {23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume},
  pages = {1305-1310},
  publisher = {ACM},
  title = {Entity linking with a unified semantic representation},
  url = {http://dl.acm.org/citation.cfm?id=2579705},
  year = {2014},
  bibtex_show = true
}

Knowledge Base Augmentation using Tabular Data

Yoones A. Sekhavat, Francesco Paolo, Denilson Barbosa, and 1 more author

In 7th Workshop on Linked Data on the Web, Jun 2014

Bib PDF

@inproceedings{Sekhavat_etal_LDOW2014,
  author = {Sekhavat, Yoones A. and di Paolo, Francesco and Barbosa, Denilson and Merialdo, Paolo},
  booktitle = {7th Workshop on Linked Data on the Web},
  publisher = {CEUR-WS.org},
  title = {Knowledge Base Augmentation using Tabular Data},
  url = {http://ceur-ws.org/Vol-1184/},
  year = {2014},
  bibtex_show = true
}

Improving Open Relation Extraction via Sentence Re-Structuring

Jordan Schmidek, and Denilson Barbosa

In Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC’14), Jun 2014

Bib PDF

@inproceedings{Schmidek_Barbosa_LREC2014,
  address = {Reykjavik, Iceland},
  author = {Schmidek, Jordan and Barbosa, Denilson},
  booktitle = {Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)},
  editor = {Chair), Nicoletta Calzolari (Conference and Choukri, Khalid and Declerck, Thierry and Loftsson, Hrafn and Maegaard, Bente and Mariani, Joseph and Moreno, Asuncion and Odijk, Jan and Piperidis, Stelios},
  isbn = {978-2-9517408-8-4},
  publisher = {European Language Resources Association (ELRA)},
  title = {Improving Open Relation Extraction via Sentence Re-Structuring},
  url = {http://www.lrec-conf.org/proceedings/lrec2014/summaries/1038.html},
  year = {2014},
  bibtex_show = true
}

LDC2014T27 - Benchmarks for Open Relation Extraction

Filipe Mesquita, Jordan Schmidek, and Denilson Barbosa

Dec 2014

Bib

@misc{Mesquita_et_al_LDC2014,
  author = {Mesquita, Filipe and Schmidek, Jordan and Barbosa, Denilson},
  date-modified = {2015-10-01 11:52:57 +0000},
  month = dec,
  published = {Linguistic Data Consortium},
  title = {LDC2014T27 - Benchmarks for Open Relation Extraction},
  url = {https://catalog.ldc.upenn.edu/LDC2014T27},
  year = {2014},
  bibtex_show = true
}

Extracting Family Relationship Networks from Novels

Aibek Makazhanov, Denilson Barbosa, and Grzegorz Kondrak

CoRR, Dec 2014

Bib

@article{Makazhanov_etal_CORR2014,
  author = {Makazhanov, Aibek and Barbosa, Denilson and Kondrak, Grzegorz},
  journal = {CoRR},
  title = {Extracting Family Relationship Networks from Novels},
  url = {http://arxiv.org/abs/1405.0603},
  volume = {abs/1405.0603},
  year = {2014},
  bibtex_show = true
}

Sentiment Analysis for Streams of Web Data: A Case Study of Brazilian Financial Markets

Bruna Neuenschwander, Adriano César Machado Pereira, Wagner Meira Jr., and 1 more author

In Proceedings of the 20th Brazilian Symposium on Multimedia and the Web, WebMedia 2014, João Pessoa, Brazil, November 18-21, 2014, Dec 2014

Bib

@inproceedings{Neuenschwander_etal_WebMedia2014,
  author = {Neuenschwander, Bruna and Pereira, Adriano C{\'{e}}sar Machado and Jr., Wagner Meira and Barbosa, Denilson},
  title = {Sentiment Analysis for Streams of Web Data: {A} Case Study of Brazilian Financial Markets},
  booktitle = {Proceedings of the 20th Brazilian Symposium on Multimedia and the Web, WebMedia 2014, Jo{\~{a}}o Pessoa, Brazil, November 18-21, 2014},
  pages = {167--170},
  year = {2014},
  publisher = {ACM},
  doi = {10.1145/2664551.2664579},
  bibtex_show = true
}

Using triads to identify local community structure in social networks

Justin Fagnan, Osmar R. Zaiane, and Denilson Barbosa

In 2014 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, ASONAM 2014, Beijing, China, August 17-20, 2014, Dec 2014

Bib

@inproceedings{Fagnan_et_al_ASONAM14,
  author = {Fagnan, Justin and Zaiane, Osmar R. and Barbosa, Denilson},
  booktitle = {2014 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, ASONAM 2014, Beijing, China, August 17-20, 2014},
  doi = {10.1109/ASONAM.2014.6921568},
  pages = {108--112},
  title = {Using triads to identify local community structure in social networks},
  year = {2014},
  bibtex_show = true
}

2013

Automatically Training Form Classifiers

Mauricio C. Moraes, Carlos A. Heuser, Viviane Pereira Moreira, and 1 more author

In Proceedings of the 14th International Web Information Systems Engineering Conference, Dec 2013

Bib

@inproceedings{Moraes_etal_WISE2013,
  author = {Moraes, Mauricio C. and Heuser, Carlos A. and Moreira, Viviane Pereira and Barbosa, Denilson},
  booktitle = {Proceedings of the 14th International Web Information Systems Engineering Conference},
  pages = {441-453},
  title = {Automatically Training Form Classifiers},
  url = {http://dx.doi.org/10.1007/978-3-642-41230-1_37},
  year = {2013},
  bibtex_show = true
}

Effectiveness and Efficiency of Open Relation Extraction

Filipe Mesquita, Jordan Schmidek, and Denilson Barbosa

In Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing, Oct 2013

PDF
Identification of Speakers in Novels

Hua He, Denilson Barbosa, and Grzegorz Kondrak

In Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Aug 2013

PDF
Open Information Extraction with Tree Kernels

Ying Xu, Mi-Young Kim, Kevin Quinn, and 2 more authors

In Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Jun 2013

PDF

Perspectives on Business Intelligence

Raymond T. Ng, Patricia C. Arocena, Denilson Barbosa, and 10 more authors

Jun 2013

Bib

@book{BIN_book_2013,
  author = {Ng, Raymond T. and Arocena, Patricia C. and Barbosa, Denilson and Carenini, Giuseppe and Jr., Luiz Gomes and Jou, Stephan and Leung, Rock Anthony and Milios, Evangelos and Miller, Renee J. and Mylopoulos, John and Pottinger, Rachel A. and Tompa, Frank and Yu, Eric},
  publisher = {Morgan and Claypool Publishers},
  series = {Synthesis Lectures on Data Management},
  title = {Perspectives on Business Intelligence},
  url = {http://www.morganclaypool.com/doi/abs/10.2200/S00491ED1V01Y201303DTM034},
  year = {2013},
  bibtex_show = true
}

Shallow Information Extraction for the Knowledge Web

Denilson Barbosa, Haixun Wang, and Cong Yu

In IEEE 29th International Conference on Data Engineering, Jun 2013

Bib PDF

@inproceedings{Barbosa_etal_ICDE2013,
  author = {Barbosa, Denilson and Wang, Haixun and Yu, Cong},
  booktitle = {IEEE 29th International Conference on Data Engineering},
  pages = {1264 - 1267},
  publisher = {IEEE},
  title = {Shallow Information Extraction for the Knowledge Web},
  url = {http://dx.doi.org/10.1109/ICDE.2013.6544920},
  year = {2013},
  bibtex_show = true
}

SociQL: A Query Language for the SocialWeb

Diego Serrano, Eleni Stroulia, Denilson Barbosa, and 1 more author

In Advances in Network Analysis and its Applications, Jun 2013

Bib

@incollection{Serrano_etal_ANAA2013,
  author = {Serrano, Diego and Stroulia, Eleni and Barbosa, Denilson and Guana, Victor},
  booktitle = {Advances in Network Analysis and its Applications},
  doi = {10.1007/978-3-642-30904-5_17},
  editor = {Kranakis, Evangelos},
  pages = {381-406},
  publisher = {Springer Berlin Heidelberg},
  series = {Mathematics in Industry},
  title = {{SociQL: A Query Language for the SocialWeb}},
  url = {http://dx.doi.org/10.1007/978-3-642-30904-5_17},
  volume = {18},
  year = {2013},
  bibtex_show = true
}

Pre-Query Discovery of Domain-specific Query Forms: A Survey

Mauricio Moraes, Carlos A. Heuser, Viviane Moreira, and 1 more author

IEEE Transactions on Knowledge and Data Engineering, Jun 2013

Bib

@article{Moraes_etal_TKDE2013,
  author = {Moraes, Mauricio and Heuser, Carlos A. and Moreira, Viviane and Barbosa, Denilson},
  journal = {IEEE Transactions on Knowledge and Data Engineering},
  number = {8},
  pages = {1830-1848},
  title = {{Pre-Query Discovery of Domain-specific Query Forms: A Survey}},
  url = {http://doi.ieeecomputersociety.org/10.1109/TKDE.2012.111},
  volume = {25},
  year = {2013},
  bibtex_show = true
}

2012

Identifying controversial articles in Wikipedia: A comparative study

Hoda Sepehri-Rad, and Denilson Barbosa

In 8th International Symposium on Wikis and Open Collaboration, Jun 2012

Bib PDF

@inproceedings{Rab_Barbosa_Wikisym2012,
  author = {Sepehri-Rad, Hoda and Barbosa, Denilson},
  booktitle = {8th International Symposium on Wikis and Open Collaboration},
  pages = {7:1--7:10},
  publisher = {ACM},
  title = {Identifying controversial articles in Wikipedia: A comparative study},
  url = {http://dl.acm.org/citation.cfm?doid=2462932.2462942},
  year = {2012},
  bibtex_show = true
}

Towards scalable summarization and visualization of large text corpora (abstract only)

Tyler Sliwkanich, Douglas Schneider, Aaron Yong, and 2 more authors

In Proceedings of the ACM SIGMOD International Conference on Management of Data, Jun 2012

Automatic Evaluation of Relation Extraction Systems on Large-scale

Mirko Bronzi, Zhaochen Guo, Filipe Mesquita, and 2 more authors

In Proceedings of the Joint Workshop on Automatic Knowledge Base Construction and Web-scale Knowledge Extraction (AKBC-WEKEX), Jun 2012

Bib PDF

@inproceedings{Bronzi_etal_AKBCWEKEX2012,
  address = {Montreal, Canada},
  author = {Bronzi, Mirko and Guo, Zhaochen and Mesquita, Filipe and Barbosa, Denilson and Merialdo, Paolo},
  booktitle = {Proceedings of the Joint Workshop on Automatic Knowledge Base Construction and Web-scale Knowledge Extraction (AKBC-WEKEX)},
  month = jun,
  pages = {19--24},
  publisher = {Association for Computational Linguistics},
  title = {Automatic Evaluation of Relation Extraction Systems on Large-scale},
  url = {http://www.aclweb.org/anthology-new/W/W12/#3000},
  year = {2012},
  bibtex_show = true
}

Extracting information networks from the blogosphere

Yuval Merhav, Filipe Mesquita, Denilson Barbosa, and 2 more authors

ACM Transactions on the Web, Jun 2012

Bib

@article{Merhav_etal_TWEB2012,
  acmid = {2344418},
  address = {New York, NY, USA},
  articleno = {11},
  author = {Merhav, Yuval and Mesquita, Filipe and Barbosa, Denilson and Yee, Wai Gen and Frieder, Ophir},
  doi = {10.1145/2344416.2344418},
  issn = {1559-1131},
  issue_date = {September 2012},
  journal = {ACM Transactions on the Web},
  keywords = {clustering, domain frequency, named entities, open information extraction, relation extraction},
  number = {3},
  numpages = {33},
  pages = {11:1--11:33},
  publisher = {ACM},
  title = {Extracting information networks from the blogosphere},
  volume = {6},
  year = {2012},
  bibtex_show = true
}

Leveraging editor collaboration patterns in wikipedia

Hoda Sepehri-Rad, Aibek Makazhanov, Davood Rafiei, and 1 more author

In Proceedings of the 23rd ACM conference on Hypertext and social media, Jun 2012

Bib

@inproceedings{Rad_etaal_HT2012,
  acmid = {2310001},
  author = {Sepehri-Rad, Hoda and Makazhanov, Aibek and Rafiei, Davood and Barbosa, Denilson},
  booktitle = {Proceedings of the 23rd ACM conference on Hypertext and social media},
  doi = {10.1145/2309996.2310001},
  isbn = {978-1-4503-1335-3},
  keywords = {admin election, controversial articles, social interactions, wikipedia},
  location = {Milwaukee, Wisconsin, USA},
  numpages = {10},
  pages = {13--22},
  publisher = {ACM},
  series = {HT '12},
  title = {Leveraging editor collaboration patterns in wikipedia},
  year = {2012},
  bibtex_show = true
}

Topic Classification of Blog Posts Using Distant Supervision

Stephanie Husby, and Denilson Barbosa

In Proceedings of the Workshop on Semantic Analysis in Social Media, Apr 2012

Bib PDF

@inproceedings{Husby_Barbosa_EACLW2012,
  address = {Avignon, France},
  author = {Husby, Stephanie and Barbosa, Denilson},
  booktitle = {Proceedings of the Workshop on Semantic Analysis in Social Media},
  month = apr,
  pages = {28--36},
  publisher = {Association for Computational Linguistics},
  title = {Topic Classification of Blog Posts Using Distant Supervision},
  url = {http://www.aclweb.org/anthology-new/W/W12/#0600},
  year = {2012},
  bibtex_show = true
}

2011

Efficient Top-k Approximate Subtree Matching in Small Memory

Nikolaus Augsten, Denilson Barbosa, Michael M. Bohlen, and 1 more author

IEEE Transactions on Knowledge and Data Engineering, Apr 2011

Bib

@article{Augsten_etal_TKDE2011,
  address = {Los Alamitos, CA, USA},
  author = {Augsten, Nikolaus and Barbosa, Denilson and Bohlen, Michael M. and Palpanas, Themis},
  issn = {1041-4347},
  journal = {IEEE Transactions on Knowledge and Data Engineering},
  pages = {1123-1137},
  publisher = {IEEE Computer Society},
  title = {Efficient Top-k Approximate Subtree Matching in Small Memory},
  url = {http://doi.ieeecomputersociety.org/10.1109/TKDE.2010.245},
  volume = {23},
  year = {2011},
  bibtex_show = true
}

Generating Synthetic Database Schemas for Simulation Purposes

Carlos Eduardo Pires, Priscilla Vieira, Marcio Saraiva, and 1 more author

In Proceedings of the 22nd International Conference on Database and Expert Systems Applications, Apr 2011

Bib

@inproceedings{Pires_etal_DEXA2011,
  author = {Pires, Carlos Eduardo and Vieira, Priscilla and Saraiva, Marcio and Barbosa, Denilson},
  booktitle = {Proceedings of the 22nd International Conference on Database and Expert Systems Applications},
  pages = {502--510},
  publisher = {Springer},
  title = {Generating Synthetic Database Schemas for Simulation Purposes},
  url = {http://dx.doi.org/10.1007/978-3-642-23091-2_44},
  year = {2011},
  bibtex_show = true
}

Access Control Policy Translation, Verification, and Minimization within Heterogeneous Data Federations

Gregory Leighton, and Denilson Barbosa

ACM Transactions on Information and System Security, Apr 2011

Bib

@article{Leighton_Barbosa_TISSEC2011,
  author = {Leighton, Gregory and Barbosa, Denilson},
  journal = {ACM Transactions on Information and System Security},
  number = {3},
  publisher = {ACM},
  title = {Access Control Policy Translation, Verification, and Minimization within Heterogeneous Data Federations},
  url = {http://doi.acm.org/10.1145/2043621.2043625},
  volume = {14},
  year = {2011},
  bibtex_show = true
}

Extracting Meta Statements from the Blogosphere

Filipe Mesquita, and Denilson Barbosa

In Proceedings of the Fifth International AAAI Conference on Weblogs and Social Media, Apr 2011

PDF

Towards identifying arguments in Wikipedia pages

Hoda Sepehri-Rad, and Denilson Barbosa

In Proceedings of the 20th International Conference on World Wide Web, Apr 2011

Bib

@inproceedings{Rad_Barbosa_WWW2011,
  author = {Sepehri-Rad, Hoda and Barbosa, Denilson},
  booktitle = {Proceedings of the 20th International Conference on World Wide Web},
  pages = {117-118},
  publisher = {ACM},
  title = {Towards identifying arguments in Wikipedia pages},
  url = {http://doi.acm.org/10.1145/1963192.1963252},
  year = {2011},
  bibtex_show = true
}

2010

The Actor-Topic Model for Extracting Social Networks in Literary Narrative

Asli Celikyilmaz, Dilek Hakkani-Tur, Hua He, and 2 more authors

In Proceedings of the NIPS 2010 Workshop – Machine Learning for Social Computing, Apr 2010

Bib PDF

@inproceedings{Celikyilmaz_etal_NIPS_MLSC2010,
  author = {Celikyilmaz, Asli and Hakkani-Tur, Dilek and He, Hua and Kondrak, Greg and Barbosa, Denilson},
  booktitle = {Proceedings of the NIPS 2010 Workshop -- Machine Learning for Social Computing},
  pages = {7 pp},
  title = {The Actor-Topic Model for Extracting Social Networks in Literary Narrative},
  url = {http://mlg.cs.purdue.edu/doku.php?id=mlsc2010},
  year = {2010},
  bibtex_show = true
}

Analyzing natural-language artifacts of the software process

Maryam Hasan, Eleni Stroulia, Denilson Barbosa, and 1 more author

In 26th IEEE International Conference on Software Maintenance, Apr 2010

Bib

@inproceedings{Hasan_etal_ICSM2010,
  author = {Hasan, Maryam and Stroulia, Eleni and Barbosa, Denilson and Alalfi, Manar H.},
  booktitle = {26th IEEE International Conference on Software Maintenance},
  pages = {1-5},
  title = {Analyzing natural-language artifacts of the software process},
  url = {http://dx.doi.org/10.1109/ICSM.2010.5609680},
  year = {2010},
  bibtex_show = true
}

Exploring and visualizing academic social networks

Veselin Ganev, Zhaochen Guo, Diego Serrano, and 2 more authors

In 19th ACM Conference on Information and Knowledge Management, Apr 2010

Bib

@inproceedings{Ganev_etal_CIKM2010,
  author = {Ganev, Veselin and Guo, Zhaochen and Serrano, Diego and Barbosa, Denilson and Stroulia, Eleni},
  booktitle = {19th ACM Conference on Information and Knowledge Management},
  pages = {1963-1964},
  publisher = {ACM},
  title = {Exploring and visualizing academic social networks},
  url = {http://doi.acm.org/10.1145/1871437.1871786},
  year = {2010},
  bibtex_show = true
}

Incorporating global information into named entity recognition systems using relational context

Yuval Merhav, Filipe Mesquita, Denilson Barbosa, and 2 more authors

In Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Apr 2010

Bib

@inproceedings{Merhav_etal_SIGIR2010,
  author = {Merhav, Yuval and Mesquita, Filipe and Barbosa, Denilson and Yee, Wai Gen and Frieder, Ophir},
  booktitle = {Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010},
  pages = {883-884},
  publisher = {ACM},
  title = {Incorporating global information into named entity recognition systems using relational context},
  url = {http://doi.acm.org/10.1145/1835449.1835664},
  year = {2010},
  bibtex_show = true
}

Access control policy translation and verification within heterogeneous data federations

Gregory Leighton, and Denilson Barbosa

In 15th ACM Symposium on Access Control Models and Technologies, Apr 2010

Bib PDF

@inproceedings{Leighton_Barbosa_SACMAT2010,
  author = {Leighton, Gregory and Barbosa, Denilson},
  booktitle = {15th ACM Symposium on Access Control Models and Technologies},
  pages = {173-182},
  publisher = {ACM},
  title = {Access control policy translation and verification within heterogeneous data federations},
  url = {http://doi.acm.org/10.1145/1809842.1809871},
  year = {2010},
  bibtex_show = true
}

Extracting Information Networks from the Blogosphere: State-of-the-Art and Challenges

Filipe Mesquita, Yuval Merhav, and Denilson Barbosa

In 4th Int’l AAAI Conference on Weblogs and Social Media–Data Challenge, Apr 2010

Bib

@inproceedings{Mesquita_Barbosa_ICWSM2010,
  author = {Mesquita, Filipe and Merhav, Yuval and Barbosa, Denilson},
  booktitle = {4th Int'l AAAI Conference on Weblogs and Social Media--Data Challenge},
  title = {Extracting Information Networks from the Blogosphere: State-of-the-Art and Challenges},
  url = {http://www.icwsm.org/2010/data.shtml},
  year = {2010},
  bibtex_show = true
}

A Framework for Automatic Schema Mapping Verification Through Reasoning

Paolo Cappellari, Denilson Barbosa, and Paolo Atzeni

In International Workshop on Data Engineering meets the Semantic Web-In conjunction with ICDE 2010, Apr 2010

Bib PDF

@inproceedings{Cappellari_etal_ICDEW2010,
  author = {Cappellari, Paolo and Barbosa, Denilson and Atzeni, Paolo},
  booktitle = {International Workshop on Data Engineering meets the Semantic Web-In conjunction with ICDE 2010},
  pages = {245-250},
  publisher = {IEEE},
  title = {A Framework for Automatic Schema Mapping Verification Through Reasoning},
  url = {http://desweb2010.unimore.it/index.html},
  year = {2010},
  bibtex_show = true
}

TASM: Top-k Approximate Subtree Matching

Nikolaus Augsten, Denilson Barbosa, Michael Bohlen, and 1 more author

In 26th IEEE International Conference on Data Engineering, Apr 2010

Bib PDF

@inproceedings{Augsten_etal_ICDE2010,
  author = {Augsten, Nikolaus and Barbosa, Denilson and Bohlen, Michael and Palpanas, Themis},
  booktitle = {26th IEEE International Conference on Data Engineering},
  pages = {353-364},
  publisher = {IEEE Computer Society},
  title = {TASM: Top-k Approximate Subtree Matching},
  url = {http://dx.doi.org/10.1109/ICDE.2010.5447905},
  year = {2010},
  bibtex_show = true
}

2009

Optimizing XML Compression

Gregory Leighton, and Denilson Barbosa

In 6th International XML Database Symposium, Apr 2009

Bib PDF

@inproceedings{LeightonB_XSym2009,
  author = {Leighton, Gregory and Barbosa, Denilson},
  booktitle = {6th International XML Database Symposium},
  pages = {81-105},
  publisher = {Springer},
  title = {Optimizing XML Compression},
  url = {http://dx.doi.org/10.1007/978-3-642-03555-5_8},
  year = {2009},
  bibtex_show = true
}

Microbenchmark

Denilson Barbosa, Ioana Manolescu, and Jeffrey Xu Yu

In Encyclopedia of Database Systems, Apr 2009

Bib

@incollection{BarbosaMY_DBEnc2009a,
  author = {Barbosa, Denilson and Manolescu, Ioana and Yu, Jeffrey Xu},
  booktitle = {Encyclopedia of Database Systems},
  pages = {1737},
  publisher = {Springer US},
  title = {Microbenchmark},
  url = {http://dx.doi.org/10.1007/978-0-387-39940-9_5054},
  year = {2009},
  bibtex_show = true
}

XML Benchmarks

Denilson Barbosa, Ioana Manolescu, and Jeffrey Xu Yu

In Encyclopedia of Database Systems, Apr 2009

Bib

@incollection{BarbosaMY_DBEnc2009b,
  author = {Barbosa, Denilson and Manolescu, Ioana and Yu, Jeffrey Xu},
  booktitle = {Encyclopedia of Database Systems},
  pages = {3576-3579},
  publisher = {Springer US},
  title = {XML Benchmarks},
  url = {http://dx.doi.org/10.1007/978-0-387-39940-9_789},
  year = {2009},
  bibtex_show = true
}

XML Storage

Denilson Barbosa, Philip Bohannon, Juliana Freire, and 4 more authors

In Encyclopedia of Database Systems, Apr 2009

Bib

@incollection{BarbosaBFKMVY_DBEnc09,
  author = {Barbosa, Denilson and Bohannon, Philip and Freire, Juliana and Kanne, Carl-Christian and Manolescu, Ioana and Vassalos, Vasilis and Yoshikawa, Masatoshi},
  booktitle = {Encyclopedia of Database Systems},
  pages = {3627-3634},
  publisher = {Springer US},
  title = {XML Storage},
  url = {http://dx.doi.org/10.1007/978-0-387-39940-9_771},
  year = {2009},
  bibtex_show = true
}

Application Benchmark

Denilson Barbosa, Ioana Manolescu, and Jeffrey Xu Yu

In Encyclopedia of Database Systems, Apr 2009

Bib

@incollection{BarbosaMY_DBEnc09,
  author = {Barbosa, Denilson and Manolescu, Ioana and Yu, Jeffrey Xu},
  booktitle = {Encyclopedia of Database Systems},
  crossref = {DBLP:reference/db/2009},
  pages = {99-100},
  publisher = {Springer US},
  title = {Application Benchmark},
  url = {http://dx.doi.org/10.1007/978-0-387-39940-9_5055},
  year = {2009},
  bibtex_show = true
}

Optimizing XML Compression (Extended Abstract)

Gregory Leighton, and Denilson Barbosa

CoRR, Apr 2009

Bib PDF

@article{LeightonB_corr_abs_0905_4761,
  author = {Leighton, Gregory and Barbosa, Denilson},
  journal = {CoRR},
  title = {Optimizing XML Compression (Extended Abstract)},
  url = {http://arxiv.org/abs/0905.4761},
  volume = {abs/0905.4761},
  year = {2009},
  bibtex_show = true
}

An Environment for Building, Exploring and Querying Academic Social Networks

Veselin Ganev, Zhaochen Guo, Diego Serrano, and 3 more authors

In ACM Conference on Management of Emergent Digital Ecosystems, Apr 2009

Bib PDF

@inproceedings{GanevGSTBS_MEDES2009,
  author = {Ganev, Veselin and Guo, Zhaochen and Serrano, Diego and Tansey, Brendan and Barbosa, Denilson and Stroulia, Eleni},
  booktitle = {ACM Conference on Management of Emergent Digital Ecosystems},
  pages = {282--289},
  publisher = {ACM},
  title = {An Environment for Building, Exploring and Querying Academic Social Networks},
  url = {http://doi.acm.org/10.1145/1643823.1643875},
  year = {2009},
  bibtex_show = true
}

Towards Automatic Schema Mapping Verification Through Reasoning

Paolo Cappellari, and Denilson Barbosa

In International Workshop on Logic in Databases, Apr 2009

Bib

@inproceedings{CappellariB_LID2009,
  author = {Cappellari, Paolo and Barbosa, Denilson},
  booktitle = {International Workshop on Logic in Databases},
  date-modified = {2015-10-01 11:52:44 +0000},
  pages = {43-56},
  title = {Towards Automatic Schema Mapping Verification Through Reasoning},
  url = {http://www.ruc.dk/dat_en/research/reports/127/},
  year = {2009},
  bibtex_show = true
}

2007

Database and XMLTechnologies, 5th International XML Database Symposium, XSym 2007, Vienna, Austria, September 23-24, 2007, Proceedings

Apr 2007

Bib

@proceedings{xsym2007,
  booktitle = {XSym},
  doi = {DOI: 10.1007/978-3-540-75288-2},
  editor = {Barbosa, Denilson and Bonifati, Angela and Bellahsene, Zohra and Hunt, Ela and Unland, Rainer},
  isbn = {978-3-540-75287-5},
  publisher = {Springer},
  series = {Lecture Notes in Computer Science},
  title = {Database and XMLTechnologies, 5th International XML Database Symposium, XSym 2007, Vienna, Austria, September 23-24, 2007, Proceedings},
  url = {http://www.springerlink.com/content/978-3-540-75287-5/},
  volume = {4704},
  year = {2007},
  bibtex_show = true
}

Labeling Data Extracted from the Web

Altigran Soares Silva, Denilson Barbosa, Joao M. B. Cavalcanti, and 1 more author

In Proceedings of the 6th International Conference on Ontologies, DataBases, and Applications of Semantics, Apr 2007

Bib

@inproceedings{SilvaBCS_ODBASE2007,
  author = {da Silva, Altigran Soares and Barbosa, Denilson and Cavalcanti, Joao M. B. and Sevalho, Marco A. S.},
  booktitle = {Proceedings of the 6th International Conference on Ontologies, DataBases, and Applications of Semantics},
  pages = {1099-1116},
  publisher = {Springer},
  title = {Labeling Data Extracted from the Web},
  url = {http://dx.doi.org/10.1007/978-3-540-76848-7_72},
  year = {2007},
  bibtex_show = true
}

FleDEx: Flexible Data Exchange

Filipe Mesquita, Denilson Barbosa, Eli Cortez, and 1 more author

In Proceedings of the 9th ACM International Workshop on Web Information and Data Management, Apr 2007

Bib

@inproceedings{MesquitaBCS_WIDM2007,
  author = {Mesquita, Filipe and Barbosa, Denilson and Cortez, Eli and and Altigran S. da Silva},
  booktitle = {Proceedings of the 9th ACM International Workshop on Web Information and Data Management},
  pages = {25-32},
  title = {FleDEx: Flexible Data Exchange},
  url = {http://portal.acm.org/citation.cfm?doid=1316902.1316907},
  year = {2007},
  bibtex_show = true
}

Adaptive Record Extraction From Web Pages

Justin Park, and Denilson Barbosa

In 16th World Wide Web Conference, Apr 2007

PDF
Generating Synthetic XML Documents by Example

Denilson Barbosa, and Grant Elliott

Apr 2007
A Lightweight Framework for Exchanging Web Data

Filipe Mesquita, Denilson Barbosa, Eli Cortez, and 1 more author

Apr 2007

PDF

2006

Efficient Incremental Validation of XML Documents After Composite Updates

Denilson Barbosa, Gregory Leighton, and Andrew Smith

In Proceedings of the Fourth International XML Database Symposium (XSym 2006), Apr 2006

Bib

@inproceedings{BarbosaLS_XSym2006,
  address = {Seoul, Korea},
  author = {Barbosa, Denilson and Leighton, Gregory and Smith, Andrew},
  booktitle = {Proceedings of the Fourth International XML Database Symposium (XSym 2006)},
  date = {September 10-11},
  pages = {107-121},
  publisher = {Springer},
  title = {Efficient Incremental Validation of XML Documents After Composite Updates},
  url = {http://dx.doi.org/10.1007/11841920_8},
  year = {2006},
  bibtex_show = true
}

Declarative generation of synthetic XML data

Denilson Barbosa, and Alberto O. Mendelzon

Softw., Pract. Exper., Apr 2006

Bib

@article{BarbosaM_SPE2006,
  author = {Barbosa, Denilson and Mendelzon, Alberto O.},
  bibsource = {DBLP, http://dblp.uni-trier.de},
  journal = {Softw., Pract. Exper.},
  number = {10},
  pages = {1051-1079},
  title = {Declarative generation of synthetic XML data},
  url = {http://dx.doi.org/10.1002/spe.724},
  volume = {36},
  year = {2006},
  bibtex_show = true
}

2005

Goals and Benchmarks for Autonomic Configuration Recommenders

Mariano P. Consens, Denilson Barbosa, Adrian M. Teisanu, and 1 more author

In Proceedings of the ACM SIGMOD International Conference on Management of Data, Apr 2005

Bib

@inproceedings{ConsensBTM_SIGMOD2005,
  author = {Consens, Mariano P. and Barbosa, Denilson and Teisanu, Adrian M. and Mignet, Laurent},
  bibsource = {DBLP, http://dblp.uni-trier.de},
  booktitle = {Proceedings of the ACM SIGMOD International Conference on Management of Data},
  pages = {239-250},
  publisher = {ACM},
  title = {Goals and Benchmarks for Autonomic Configuration Recommenders},
  url = {http://doi.acm.org/10.1145/1066157.1066185},
  year = {2005},
  bibtex_show = true
}

Designing Information-Preserving Mapping Schemes for XML

Denilson Barbosa, Juliana Freire, and Alberto O. Mendelzon

In Proceedings of the 31st International Conference on Very Large Data Bases, Apr 2005

PDF

Studying the XML Web: Gathering Statistics from an XML Sample

Denilson Barbosa, Laurent Mignet, and Pierangelo Veltri

World Wide Web, Apr 2005

Bib

@article{BarbosaMV_WWWJ2005,
  author = {Barbosa, Denilson and Mignet, Laurent and Veltri, Pierangelo},
  bibsource = {DBLP, http://dblp.uni-trier.de},
  journal = {World Wide Web},
  number = {4},
  pages = {413-438},
  title = {Studying the XML Web: Gathering Statistics from an XML Sample},
  url = {http://dx.doi.org/10.1007/s11280-005-1544-y},
  volume = {8},
  year = {2005},
  bibtex_show = true
}

Incremental Validation of XML Documents and Mappings

Denilson Barbosa

Department of Computer Science, University of Toronto, Apr 2005

2004

Information Preservation in XML-to-Relational Mappings

Denilson Barbosa, Juliana Freire, and Alberto O. Mendelzon

In Proceedings of the Second International XML Database Symposium (XSym 2004), Apr 2004

Bib PDF

@inproceedings{BarbosaFM_XSym2004,
  author = {Barbosa, Denilson and Freire, Juliana and Mendelzon, Alberto O.},
  booktitle = {Proceedings of the Second International XML Database Symposium (XSym 2004)},
  pages = {66-81},
  title = {Information Preservation in XML-to-Relational Mappings},
  url = {http://springerlink.metapress.com/openurl.asp?genre=article{\&}issn=0302-9743{\&}volume=3186{\&}spage=66},
  year = {2004},
  bibtex_show = true
}

Efficient Incremental Validation of XML Documents

Denilson Barbosa, Alberto O. Mendelzon, Leonid Libkin, and 2 more authors

In Proceedings of the 20th International Conference on Data Engineering (ICDE 2004), Apr 2004

Bib PDF

@inproceedings{BarbosaMLMA_ICDE2004,
  author = {Barbosa, Denilson and Mendelzon, Alberto O. and Libkin, Leonid and Mignet, Laurent and Arenas, Marcelo},
  bibsource = {DBLP, http://dblp.uni-trier.de},
  booktitle = {Proceedings of the 20th International Conference on Data Engineering (ICDE 2004)},
  pages = {671-682},
  title = {Efficient Incremental Validation of XML Documents},
  url = {http://csdl.computer.org/comp/proceedings/icde/2004/2065/00/20650671abs.htm},
  year = {2004},
  bibtex_show = true
}

Information Preservation in XML-to-Relational Mappings

Denilson Barbosa, Juliana Freire, and Alberto O. Mendelzon

Apr 2004

PDF
Experimental Evaluation of Autonomic Indexing

Denilson Barbosa, Mariano P. Consens, and Laurent Mignet

Apr 2004
CASCON 2003 Workshop Report - XML Query Processing

Denilson Barbosa, and Alberto O. Mendelzon

Apr 2004

PDF

2003

The XML web: a first study

Laurent Mignet, Denilson Barbosa, and Pierangelo Veltri

In Proceedings of the Twelfth International World Wide Web Conference, Apr 2003

Bib PDF

@inproceedings{MignetBV_WWW2003,
  author = {Mignet, Laurent and Barbosa, Denilson and Veltri, Pierangelo},
  bibsource = {DBLP, http://dblp.uni-trier.de},
  booktitle = {Proceedings of the Twelfth International World Wide Web Conference},
  pages = {500-510},
  publisher = {ACM},
  title = {The XML web: a first study},
  url = {http://doi.acm.org/10.1145/775152.775223},
  year = {2003},
  bibtex_show = true
}

On the Characterization of the XML Web

Laurent Mignet, Denilson Barbosa, and Pierangelo Veltri

In Proceedings of the Eleventh Italian Symposium on Advanced Database Systems (SEBD 2003), Apr 2003

Finding ID Attributes in XML Documents

Denilson Barbosa, and Alberto O. Mendelzon

In Proceedings of the International XML Database Symposium, Apr 2003

Bib PDF

@inproceedings{BarbosaM_XSym2003,
  author = {Barbosa, Denilson and Mendelzon, Alberto O.},
  bibsource = {DBLP, http://dblp.uni-trier.de},
  booktitle = {Proceedings of the International XML Database Symposium},
  crossref = {DBLP:conf/xsym/2003},
  pages = {180-194},
  title = {Finding ID Attributes in XML Documents},
  url = {http://springerlink.metapress.com/openurl.asp?genre=article{\&}issn=0302-9743{\&}volume=2824{\&}spage=180},
  year = {2003},
  bibtex_show = true
}

ToXgene Template Specification Language

Denilson Barbosa

Apr 2003

PDF

CASCON 2002 Workshop Report - XML Data Management

Denilson Barbosa, and Alberto O. Mendelzon

Apr 2003

Bib PDF

@techreport{IBM/BarbosaMendelzon03,
  author = {Barbosa, Denilson and Mendelzon, Alberto O.},
  date = {January},
  institution = {IBM},
  number = {TR-74.188-14},
  title = {CASCON 2002 Workshop Report - XML Data Management},
  url = {https://www-927.ibm.com/ibm/cas/publications/TR-74.188/14/index.pdf},
  year = {2003},
  bibtex_show = true
}

2002

ToXgene: An extensible template-based data generator for XML

Denilson Barbosa, Alberto O. Mendelzon, John Keenleyside, and 1 more author

In Proceedings of the Fifth International Workshop on the Web and Databases (WebDB 2002), Apr 2002

Bib PDF

@inproceedings{BarbosaMKL_WebDB2002,
  author = {Barbosa, Denilson and Mendelzon, Alberto O. and Keenleyside, John and Lyons, Kelly A.},
  bibsource = {DBLP, http://dblp.uni-trier.de},
  booktitle = {Proceedings of the Fifth International Workshop on the Web and Databases (WebDB 2002)},
  pages = {49-54},
  title = {ToXgene: An extensible template-based data generator for XML},
  url = {http://www.db.ucsd.edu/webdb2002/papers/50.pdf},
  year = {2002},
  bibtex_show = true
}

ToXgene: a template-based data generator for XML

Denilson Barbosa, Alberto O. Mendelzon, John Keenleyside, and 1 more author

In Proceedings of the 2002 ACM SIGMOD International Conference on Management of Data, Apr 2002

Bib PDF

@inproceedings{BarbosaMKL_SIGMOD2002,
  author = {Barbosa, Denilson and Mendelzon, Alberto O. and Keenleyside, John and Lyons, Kelly A.},
  bibsource = {DBLP, http://dblp.uni-trier.de},
  booktitle = {Proceedings of the 2002 ACM SIGMOD International Conference on Management of Data},
  pages = {616},
  title = {ToXgene: a template-based data generator for XML},
  url = {http://doi.acm.org/10.1145/564691.564769},
  year = {2002},
  bibtex_show = true
}

The XML Web: a First Study

Laurent Mignet, Denilson Barbosa, and Pierangelo Veltri

Apr 2002

2001

ToX - the Toronto XML Engine

Denilson Barbosa, Attila Barta, Alberto O. Mendelzon, and 3 more authors

In Workshop on Information Integration on the Web, Apr 2001

PDF

2000

On the World Wide Web, XML and Open Hypermedia Systems (Extended Abstract)

Denilson Barbosa

Apr 2000

Bib PDF

@misc{CITO/Barbosa2000,
  address = {Ottawa, Ontario, Canada},
  author = {Barbosa, Denilson},
  date = {October 2-3},
  howpublished = {Poster at CITO Knowledge Network Conference},
  title = {On the World Wide Web, XML and Open Hypermedia Systems (Extended Abstract)},
  url = {http://www.cs.ualberta.ca/~denilson/files/publications/cito00/abstract.txt},
  year = {2000},
  bibtex_show = true
}

On Storage Methods for Semistructured Data

Denilson Barbosa

Apr 2000

PDF
XML and Hypermedia Applications

Denilson Barbosa

Apr 2000

PDF

1999

Parallelizing MPEG Video Encoding using Multiprocessors

Denilson Barbosa, Joao Paulo Kitajima, and Wagner Meira Jr.

In Proceedings of the XII Brazilian Symposium on Computer Graphics and Image Processing, Apr 1999

Bib PDF

@inproceedings{BarbosaKMjr_SIBGRAPI1999,
  address = {Campinas, SP, Brazil},
  author = {Barbosa, Denilson and Kitajima, Joao Paulo and Jr., Wagner Meira},
  booktitle = {Proceedings of the XII Brazilian Symposium on Computer Graphics and Image Processing},
  date = {October},
  pages = {215-222},
  publisher = {IEEE Computer Society},
  title = {Parallelizing MPEG Video Encoding using Multiprocessors},
  url = {http://dl.acm.org/citation.cfm?id=646013.677324},
  year = {1999},
  bibtex_show = true
}

Real-time MPEG Encoding in Shared-Memory Multiprocessors

Denilson Barbosa, João Paulo Kitajima, and Wagner Meira Jr

In Proceedings of the 2nd International Conference - Parallel Computing Systems 1999, Apr 1999

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Compressao de Video Digital MPEG em Paralelo

Denilson Barbosa

Departamento de Ciência da Computação, Universidade Federal de Minas Gerais, Apr 1999

1998

Experimental Analysis of a Parallel Quicksort-based Algorithm for Suffix Array Generation

Autran Macedo, Elaine S. Silva, Denilson M. Barbosa, and 5 more authors

In Proceedings of the 3rd International Meeting on Vector and Parallel Processing, Apr 1998

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