supported by National Natural Science foundation of China (Grant Nos. 71263045, 61662070, 61379050, 91224008, 61532010, 61532016);Research Funds of Renmin University of China (Grant No. 11XNL010);Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20130004130001)
During the past two decades,we have witnessed the explosive growth of the World Wide Web.To understand the common patterns of how this complex artificial software system evolves has been a more and more important and ...