Kuo-Tay Chen Tsai-Jyh Chen Ju-Chun Yen Predicting Future Earnings Change Using Numeric and Textual Information in Financial Reports. 54-63 2009 PAISI http://dx.doi.org/10.1007/978-3-642-01393-5_7 conf/paisi/2009 db/conf/paisi/paisi2009.html#ChenCY09