Extracting Opinion Expressions with semi-Markov Conditional Random Fields
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author = {Yang, Bishan and Cardie, Claire}, title = {Extracting Opinion Expressions with semi-Markov Conditional Random Fields}, booktitle = {Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning}, month = {July}, year = {2012}, address = {Jeju Island, Korea}, publisher = {Association for Computational Linguistics}, pages = {1335--1345},
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Summary
This paper proposes a segment level sequence labeling technique using semi-CRFs. The main focus of the paper is to identify two types of opinion expressions in the corpus. First, direct subjective expressions. Secondly, direct expressive subjective expressions.
Background
The previous work of sequence tagging in natural language processing has been limited to token level. T
Methodology
Study Plan
This paper uses semi-CRF for the labeling task. So the user should first read about semi-CRF.