English»Data Sets and State-of-the-art (SOTA)»Text Mining and NLP»Sentiment Analysis and Opinion Mining | searchivarius.org
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AFINN-111   - a list of English words rated for valence with an integerbetween minus five (negative) and plus five (positive). The words were manually labeled by Finn Årup Nielsen in 2009-2011.
Amazon product data   - This dataset contains product reviews and metadata from Amazon, including 143.7 million reviews spanning May 1996 - July 2014.
Amazon product reviews  
Deeply moving: Stanford deep learning framework  
Hu and Liu's sentiment lexicon and dataset list  
Linguistic Inquiry and Word Count (LIWC)   - a propriety database consisting of a lot of categorized regular expressions.
Multi-Domain Sentiment Dataset  
Multi-Perspective Question Answering corpora  
Sentiment symposium Tutorial  
SentiWordNet   - a lexical resource for opinion mining and sentiment analysis.
STS-Gold   - evaluation data set for Twitter sentiment analysis.