Yufeng Wang Akihiro Nakao Jianhua Ma SDEC: A P2P Semantic Distance Embedding Based on Virtual Coordinate System. 208-220 2009 UIC http://dx.doi.org/10.1007/978-3-642-02830-4_17 conf/uic/2009 db/conf/uic/uic2009.html#WangNM09