Accession Number:

ADA512717

Title:

University of Waterloo at TREC 2008 Blog Track

Descriptive Note:

Conference paper

Corporate Author:

WATERLOO UNIV (ONTARIO) DEPT OF MANAGEMENT SCIENCES

Personal Author(s):

Report Date:

2008-11-01

Pagination or Media Count:

9.0

Abstract:

The paper reports the University of Waterloo participation in the opinion and polarity tasks of the Blog track. The proposed method uses a lexicon built from several linguistic resources. The opinion discriminating ability of each subjective lexical unit was estimated using the Kullback-Leibler divergence. The KLD scores of subjective words occurring within fixed-size windows around instances of query terms were used in calculating document scores. The described system also used a method of identifying phrases in topic titles by matching them to Wikipedia titles. The results show that both KLD-based scores of subjective lexical units and Wikipedia-matched phrases are useful techniques that help improve opinion retrieval performance.

Subject Categories:

  • Information Science
  • Linguistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE