same topics via google Hiromitsu Watanabe, Basabi Chakraborty, and Goutam Chakraborty (2007) Rough Neuro Voting System for Data Mining: Application to Stock Price Prediction RSKT 2007, LNAI 4481, pp. 558.565, 2007. Kyoung-jae Kim, Jin-nyoung Huh and Ingoo Han Trading rule extraction in stock market using the rough set approach "... some researchers reported that ... [1]