Óscar Ferrández

Also published as: Oscar Ferrandez, Oscar Ferrández


A Hybrid Stepwise Approach for De-identifying Person Names in Clinical Documents
Oscar Ferrández | Brett South | Shuying Shen | Stéphane Meystre
BioNLP: Proceedings of the 2012 Workshop on Biomedical Natural Language Processing


Investigating Advanced Techniques for Document Content Similarity Applied to External Plagiarism Analysis
Daniel Micol | Rafael Muñoz | Óscar Ferrández
Proceedings of the International Conference Recent Advances in Natural Language Processing 2011


Aligning FrameNet and WordNet based on Semantic Neighborhoods
Óscar Ferrández | Michael Ellsworth | Rafael Muñoz | Collin F. Baker
Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)

This paper presents an algorithm for aligning FrameNet lexical units to WordNet synsets. Both, FrameNet and WordNet, are well-known as well as widely-used resources by the entire research community. They help systems in the comprehension of the semantics of texts, and therefore, finding strategies to link FrameNet and WordNet involves challenges related to a better understanding of the human language. Such deep analysis is exploited by researchers to improve the performance of their applications. The alignment is achieved by exploiting the particular characteristics of each lexical-semantic resource, with special emphasis on the explicit, formal semantic relations in each. Semantic neighborhoods are computed for each alignment of lemmas, and the algorithm calculates correlation scores by comparing such neighborhoods. The results suggest that the proposed algorithm is appropriate for aligning the FrameNet and WordNet hierarchies. Furthermore, the algorithm can aid research on increasing the coverage of FrameNet, building FrameNets in other languages, and creating a system for querying a joint FrameNet-WordNet hierarchy.


A Study on Linking Wikipedia Categories to Wordnet Synsets using Text Similarity
Antonio Toral | Óscar Ferrández | Eneko Agirre | Rafael Muñoz
Proceedings of the International Conference RANLP-2009


Entailment-based Question Answering for Structured Data
Bogdan Sacaleanu | Constantin Orasan | Christian Spurk | Shiyan Ou | Oscar Ferrandez | Milen Kouylekov | Matteo Negri
Coling 2008: Companion volume: Demonstrations


DLSITE-2: Semantic Similarity Based on Syntactic Dependency Trees Applied to Textual Entailment
Daniel Micol | Óscar Ferrández | Rafael Muñoz | Manuel Palomar
Proceedings of the Second Workshop on TextGraphs: Graph-Based Algorithms for Natural Language Processing

A Perspective-Based Approach for Solving Textual Entailment Recognition
Óscar Ferrández | Daniel Micol | Rafael Muñoz | Manuel Palomar
Proceedings of the ACL-PASCAL Workshop on Textual Entailment and Paraphrasing