Chuan-Ju Wang Ming-Feng Tsai Tse Liu Chin-Ting Chang Financial Sentiment Analysis for Risk Prediction. 802-808 2013 IJCNLP https://aclanthology.org/I13-1097/ conf/ijcnlp/2013 db/conf/ijcnlp/ijcnlp2013.html#WangTLC13