The 2009 International Conference on Web Information Systems and Mining (WISM 2009) was held in
Shanghai China 7-8 November 2009. WISM 2009 received 598 submissions from 20 countries and
regions. After rigorous reviews 61 high-quality papers were selected for publication in this
volume. The acceptance rate was 10.2%. The aim of WISM 2009 was to bring together researchers
working in many diff- ent areas of Web information systems and Web mining to foster exchange of
new ideas and promote international collaborations. In addition to the large number of
submitted papers and invited sessions there were several internationally well-known keynote
speeches. On behalf of the Organizing Committee we thank the Shanghai University of El- tric
Power for its sponsorship and logistics support. We also thank the members of the Organizing
Committee and the Program Committee for their hard work. We are very grateful to the keynote
speakers invited session organizers session chairs reviewers and student helpers. Last but
not least we thank all the authors and participants for their great contributions that made
this conference possible. November 2009 Wenyin Liu Xiangfeng Luo Fu Lee Wang Jingsheng Lei
Organization Organizing Committee General Co-chairs Jialin Cao Shanghai University of Electric
Power China Jingsheng Lei Hainan University China Program Committee Co-chairs Wenyin Liu City
University of Hong Kong Hong Kong Xiangfeng Luo Shanghai University China Local Arrangements
Chair Hao Zhang Shanghai University of Electric Power China
