哪吒机器人提醒：
提醒：AI and Social Science - Brendan O'Connor
【标题】Be careful with dictionary-based text analysis
【摘要】ok, everyone loves to run dictionary methods for sentiment and other text analysis — counting words from a predefined lexicon in a big corpus, in order to explore or test hypotheses about the corpus. in particular, this is often done for sentiment analysis: count positive and negative words (according to a sentiment polarity lexicon, which was derived from human raters or previous researchers’ intuitions), and then proclaim the output yields sentiment levels of the documents. more and more paper... (10-06 12:20)
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