For my research I designed a review corpus (for text-based sentiment classification). UTF-8, simplified Chinese. You can find two versions of it on http://www.informatics.sussex.ac.uk/users/tz21/
it168test - the corpus consists of 2317 reviews of mobile phones of which 1158 are negative and 1159 are positive (more info in a readmr.txt file inside).
coling08 - the corpus consists of 10 subcorpora containing a total of 7982 reviews, distributed between 10 product types (more info in a readmr.txt file inside).
Hope you can find them useful.
Best regards, Taras Zagibalov
2009/6/1 Dr.Xu Ruifeng <ruifeng.xu at cityu.edu.hk>:
> Dear Corpora-lister,
> I am upgrating a Chinese opinion corpus. I know following opinoin corpus in English and Chinese are available.
> 1. MPQA English News
> Wiebe, Janyce, Theresa Wilson, and Claire Cardie. ‘Annotating expressions of opinions and emotions in language’. Language Resources and Evaluation 39(2-3): 165-210
> 2. NTU opinion corpus: Chinese news
> Construction of an Evaluation Corpus for Opinion Extraction
> Lun-Wei Ku, Tung-Ho Wu, Li-Ying Lee and Hsin-Hsi Chen, Proceedings of NTCIR-5 Workshop Meeting
> Later in NTCIR-6, corpus on Simplified Chinese news are provided.
> 3. CUHK opinin corpus : Chinese product review
> Ruifeng Xu, Yunqing Xia, Kam-Fai Wong and Wenjie Li
> Opinion Annotation in On-line Chinese Product Reviews
> Proceedings of the Sixth International Language Resources and Evaluation (LREC'08
> I want to know other available opinion corpus on English and Chinese, especially on product review.
> Dr. Ruifeng Xu,
> Dept. of Chinese, Translation and Linguistics,
> City University of Hong Kong
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> Corpora at uib.no