Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31388
Title: Sentiment classification with polarity shifting detection
Authors: Li, S
Wang, Z
Lee, SYM 
Huang, CR 
Keywords: Emotion
Semi-supervised learning
Sentiment classification
Issue Date: 2013
Source: Proceedings - 2013 International Conference on Asian Language Processing, IALP 2013, 2013, 6646020, p. 129-132 How to cite?
Abstract: Sentiment classification is now a hot research issue in the community of natural language processing and the bag-of-words based machine learning approach is the state-of-the-art for this task. However, one important phenomenon, called polarity shifting, remains unsolved in the bag-of-words model, which sometimes makes the machine learning approach fails. In this study, we aim to perform sentiment classification with full consideration of the polarity shifting phenomenon. First, we extract some detection rules for detecting polarity shifting of sentimental words from a corpus which consists of polarity-shifted sentences. Then, we use the detection rules to detect the polarity-shifted words in the testing data. Third, a novel term counting-based classifier is designed by fully considering those polarity-shifted words. Evaluation shows that the novel term counting-based classifier significantly improves the performance of sentiment analysis across five domains. Furthermore, when this classifier is combined with a machine-learning based classifier, the combined classifier yields better performance than either of them.
Description: 2013 International Conference on Asian Language Processing, IALP 2013, Urumqi, Xinjiang, 17-19 August 2013
URI: http://hdl.handle.net/10397/31388
ISBN: 9780769550633
DOI: 10.1109/IALP.2013.44
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