2KU L-W, LO Y-S, CHEN H-H. Using polarity scores of words for sentence-level opinion extraction [ C]// Proceedings of the 6th NTCIR-6 Workshop Meeting. Toyko, Japan: [ s. n. ], 2007:316 - 322.
7TURNEY P D. Thumbs up or thumbs down? Semantic orientation applied to unsupervised classification of reviews [ C]// Proceedings of the 40th Annual Meeting of the Association for Computational Linguistics. Morristown, N J, USA: Association for Computational Linguistics, 2002:417-424.
9KAJI N, KITSUREGAWA M. Building lexicon for sentiment analysis from massive collection of HTML documents [ C/OL]//EMNLPCoNLL 2007: Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning. 2007:1075 - 1083 [2009 -03 -08]. http://www. aclweb. org/anthology/D/D07/D07-1115. pdf.