Proceedings Second International Workshop on Knowledge Discovery and Data Mining : Moscow, Russia, 23-25 January 2009 / edited by Qi Luo, Mingming Gong ; co-sponsored by Intelligent Information Technology Application Association, Wuhan University of Science and Technology Zhongnan Branch, China, Computing and Security Center, Hong Kong. - Luo, Qi, 1982-; Gong, Mingming (IEEE Computer Society, 2009)