作者机构:[1]Department of Automation, Tsinghua University, Beijing 100084, China
相关基金:Supported by the National Natural Science Foundation of China (No. 60674080), the Europe Union Project of Software for Ambient Semantic Interoperable Services (FP6-2005-ISTo5-034980), and the National High-Tech Research and Development (863) Program of China (Nos. 2006AAO4Z 166 and 2007AA04Z 150)