Opinion holder extraction from author and authority viewpoints

ABSTRACT

Opinion holder extraction research is important for discriminating between opinions that are viewed from different perspectives. In this paper, we describe our experience of participation in the NTCIR-6 Opinion Analysis Pilot Task by focusing on opinion holder extraction results in Japanese and English. Our approach to opinion holder extraction was based on the discrimination between author and authority viewpoints in opinionated sentences, and the evaluation results were fair with respect to the Japanese documents.

REFERENCES

• 1: Yejin Choi , Claire Cardie , Ellen Riloff , Siddharth Patwardhan, Identifying sources of opinions with conditional random fields and extraction patterns, Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing, p.355-362, October 06-08, 2005, Vancouver, British Columbia, Canada [doi>10.3115/1220575.1220620]
• 2: J. Wiebe, T. Wilson, and C. Cardie. Annotating Expressions of Opinions and Emotions in Language. Language Resources and Evaluation, 39(2--3):165--210, 2005.

INDEX TERMS

Primary Classification:
  H. Information Systems
  H.3 INFORMATION STORAGE AND RETRIEVAL
      H.3.3 Information Search and Retrieval
          Subjects: Information filtering

General Terms:
Experimentation

Keywords:
NTCIR, opinion extraction, opinion holder