supported by the National Hi-Tech Research and Develop-ment Program of China ("863" Project) (Grant No.2007AA120502);the National Key Technologies Research and Development Program of China (Grant Nos.2008BAJ11B04,2006BAJ14B04);the National Natural Science Foundation of China (Grant Nos.40701134,40771171,40928001)
A wiki system is a typical Web 2.0 application that provides a bi-directional platform for users to collaborate and share much useful information online.Unfortunately,computers cannot well understand the wiki pages in...