In this paper, the UNITOR system participating in the SemEval-2014 Aspect Based Sentiment Analysis competition is presented. The task is tackled exploiting Kernel Methods within the Support Vector Machine framework. The Aspect Term Extraction is modeled as a sequential tagging task, tackled through SVMhmm. The Aspect Term Polarity, Aspect Category and Aspect Category Polarity detection are tackled as a classification problem where multiple kernels are linearly combined to generalize several linguistic information. In the challenge, UNITOR system achieves good results, scoring in almost all rankings between the 2nd and the 8th position within about 30 competitors.

Castellucci, G., Filice, S., Croce, D., Basili, R. (2014). UNITOR: Aspect Based Sentiment Analysis with Structured Learning. In Proceedings of the 8th International Workshop on Semantic Evaluation (SemEval 2014) (pp.761-767). Association for Computational Linguistics (ACL) [10.3115/v1/S14-2135].

UNITOR: Aspect Based Sentiment Analysis with Structured Learning

Castellucci G.;Filice S.;Croce D.;Basili R.
2014-01-01

Abstract

In this paper, the UNITOR system participating in the SemEval-2014 Aspect Based Sentiment Analysis competition is presented. The task is tackled exploiting Kernel Methods within the Support Vector Machine framework. The Aspect Term Extraction is modeled as a sequential tagging task, tackled through SVMhmm. The Aspect Term Polarity, Aspect Category and Aspect Category Polarity detection are tackled as a classification problem where multiple kernels are linearly combined to generalize several linguistic information. In the challenge, UNITOR system achieves good results, scoring in almost all rankings between the 2nd and the 8th position within about 30 competitors.
8th International Workshop on Semantic Evaluation, SemEval 2014
Dublino, Irlanda
2014
8
The ACL Special Interest Group on the Lexicon (SIGLEX)
Rilevanza internazionale
2014
Settore INF/01
English
Intervento a convegno
Castellucci, G., Filice, S., Croce, D., Basili, R. (2014). UNITOR: Aspect Based Sentiment Analysis with Structured Learning. In Proceedings of the 8th International Workshop on Semantic Evaluation (SemEval 2014) (pp.761-767). Association for Computational Linguistics (ACL) [10.3115/v1/S14-2135].
Castellucci, G; Filice, S; Croce, D; Basili, R
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/359304
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