José I. Abreu

Also published as: José Abreu, Jose I. Abreu


2017

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UCSC-NLP at SemEval-2017 Task 4: Sense n-grams for Sentiment Analysis in Twitter
José Abreu | Iván Castro | Claudia Martínez | Sebastián Oliva | Yoan Gutiérrez
Proceedings of the 11th International Workshop on Semantic Evaluation (SemEval-2017)

This paper describes the system submitted to SemEval-2017 Task 4-A Sentiment Analysis in Twitter developed by the UCSC-NLP team. We studied how relationships between sense n-grams and sentiment polarities can contribute to this task, i.e. co-occurrences of WordNet senses in the tweet, and the polarity. Furthermore, we evaluated the effect of discarding a large set of features based on char-grams reported in preceding works. Based on these elements, we developed a SVM system, which exploring SentiWordNet as a polarity lexicon. It achieves an F1=0.624of average. Among 39 submissions to this task, we ranked 10th.

2013

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UMCC_DLSI: Textual Similarity based on Lexical-Semantic features
Alexander Chávez | Héctor Dávila | Yoan Gutiérrez | Armando Collazo | José I. Abreu | Antonio Fernández Orquín | Andrés Montoyo | Rafael Muñoz
Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 1: Proceedings of the Main Conference and the Shared Task: Semantic Textual Similarity

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UMCC_DLSI-(EPS): Paraphrases Detection Based on Semantic Distance
Héctor Dávila | Antonio Fernández Orquín | Alexander Chávez | Yoan Gutiérrez | Armando Collazo | José I. Abreu | Andrés Montoyo | Rafael Muñoz
Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013)

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UMCC_DLSI: Reinforcing a Ranking Algorithm with Sense Frequencies and Multidimensional Semantic Resources to solve Multilingual Word Sense Disambiguation
Yoan Gutiérrez | Yenier Castañeda | Andy González | Rainel Estrada | Dennys D. Piug | Jose I. Abreu | Roger Pérez | Antonio Fernández Orquín | Andrés Montoyo | Rafael Muñoz | Franc Camara
Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013)

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UMCC_DLSI-(SA): Using a ranking algorithm and informal features to solve Sentiment Analysis in Twitter
Yoan Gutiérrez | Andy González | Roger Pérez | José I. Abreu | Antonio Fernández Orquín | Alejandro Mosquera | Andrés Montoyo | Rafael Muñoz | Franc Camara
Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013)

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UMCC_DLSI: Semantic and Lexical features for detection and classification Drugs in biomedical texts
Armando Collazo | Alberto Ceballo | Dennys D. Puig | Yoan Gutiérrez | José I. Abreu | Roger Pérez | Antonio Fernández Orquín | Andrés Montoyo | Rafael Muñoz | Franc Camara
Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013)