Extracting Aspect-Evaluation and Aspect-Of Relations in Opinion Mining

摘要: The technology of opinion extraction allows users to retrieve and analyze people’s opinions scattered over Web documents. We define an unit as a quadruple consisting the holder, subject being evaluated, part or attribute in which is value evaluation that expresses positive negative assessment. use this definition basis for our task. focus on two important subtasks extraction: (a) extracting aspect-evaluation relations, (b) aspect-of we approach each task using methods combine contextual statistical clues. Our experiments Japanese weblog posts show clues improve performance both tasks.