Reranking models in fine-grained opinion analysis

  • Authors:
  • Richard Johansson;Alessandro Moschitti

  • Affiliations:
  • University of Trento;University of Trento

  • Venue:
  • COLING '10 Proceedings of the 23rd International Conference on Computational Linguistics
  • Year:
  • 2010

Quantified Score

Hi-index 0.00

Visualization

Abstract

We describe the implementation of reranking models for fine-grained opinion analysis -- marking up opinion expressions and extracting opinion holders. The reranking approach makes it possible to model complex relations between multiple opinions in a sentence, allowing us to represent how opinions interact through the syntactic and semantic structure. We carried out evaluations on the MPQA corpus, and the experiments showed significant improvements over a conventional system that only uses local information: for both tasks, our system saw recall boosts of over 10 points.