Beñat Zapirain


2015

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IXAGroupEHUDiac: A Multiple Approach System towards the Diachronic Evaluation of Texts
Haritz Salaberri | Iker Salaberri | Olatz Arregi | Beñat Zapirain
Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015)

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IXAGroupEHUSpaceEval: (X-Space) A WordNet-based approach towards the Automatic Recognition of Spatial Information following the ISO-Space Annotation Scheme
Haritz Salaberri | Olatz Arregi | Beñat Zapirain
Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015)

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bRol: The Parser of Syntactic and Semantic Dependencies for Basque
Haritz Salaberri | Olatz Arregi | Beñat Zapirain
Proceedings of the International Conference Recent Advances in Natural Language Processing

2014

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First approach toward Semantic Role Labeling for Basque
Haritz Salaberri | Olatz Arregi | Beñat Zapirain
Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)

In this paper, we present the first Semantic Role Labeling system developed for Basque. The system is implemented using machine learning techniques and trained with the Reference Corpus for the Processing of Basque (EPEC). In our experiments the classifier that offers the best results is based on Support Vector Machines. Our system achieves 84.30 F1 score in identifying the PropBank semantic role for a given constituent and 82.90 F1 score in identifying the VerbNet role. Our study establishes a baseline for Basque SRL. Although there are no directly comparable systems for English we can state that the results we have achieved are quite good. In addition, we have performed a Leave-One-Out feature selection procedure in order to establish which features are the worthiest regarding argument classification. This will help smooth the way for future stages of Basque SRL and will help draw some of the guidelines of our research.

2013

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Selectional Preferences for Semantic Role Classification
Beñat Zapirain | Eneko Agirre | Lluís Màrquez | Mihai Surdeanu
Computational Linguistics, Volume 39, Issue 3 - September 2013

2010

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Improving Semantic Role Classification with Selectional Preferences
Beñat Zapirain | Eneko Agirre | Lluís Màrquez | Mihai Surdeanu
Human Language Technologies: The 2010 Annual Conference of the North American Chapter of the Association for Computational Linguistics

2009

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Generalizing over Lexical Features: Selectional Preferences for Semantic Role Classification
Beñat Zapirain | Eneko Agirre | Lluís Màrquez
Proceedings of the ACL-IJCNLP 2009 Conference Short Papers

2008

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Robustness and Generalization of Role Sets: PropBank vs. VerbNet
Beñat Zapirain | Eneko Agirre | Lluís Màrquez
Proceedings of ACL-08: HLT

2007

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UBC-UPC: Sequential SRL Using Selectional Preferences. An approach with Maximum Entropy Markov Models
Beñat Zapirain | Eneko Agirre | Lluís Màrquez
Proceedings of the Fourth International Workshop on Semantic Evaluations (SemEval-2007)