Paper: Syntactic Patterns versus Word Alignment: Extracting Opinion Targets from Online Reviews

ACL ID P13-1172
Title Syntactic Patterns versus Word Alignment: Extracting Opinion Targets from Online Reviews
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2013
Authors

Mining opinion targets is a fundamen- tal and important task for opinion min- ing from online reviews. To this end, there are usually two kinds of methods: syntax based and alignment based meth- ods. Syntax based methods usually ex- ploited syntactic patterns to extract opin- ion targets, which were however prone to suffer from parsing errors when dealing with online informal texts. In contrast, alignment based methods used word align- ment model to fulfill this task, which could avoid parsing errors without using pars- ing. However, there is no research fo- cusing on which kind of method is more better when given a certain amount of re- views. To fill this gap, this paper empiri- cally studies how the performance of these two kinds of methods vary when chang- ing the size, domain and lang...