Paper: Collocation Polarity Disambiguation Using Web-based Pseudo Contexts

ACL ID D12-1015
Title Collocation Polarity Disambiguation Using Web-based Pseudo Contexts
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 2012
Authors

This paper focuses on the task of colloca- tion polarity disambiguation. The collocation refers to a binary tuple of a polarity word and a target (such as ?long, battery life? or ?long, startup?), in which the sentiment orientation of the polarity word (?long?) changes along with different targets (?battery life? or ?startup?). To disambiguate a collocation?s polarity, pre- vious work always turned to investigate the polarities of its surrounding contexts, and then assigned the majority polarity to the collo- cation. However, these contexts are limited, thus the resulting polarity is insufficient to be reliable. We therefore propose an unsuper- vised three-component framework to expand some pseudo contexts from web, to help dis- ambiguate a collocation?s polarity.Without us- ing any additi...