报告题目：Trust in Social Networks, Web Services and E-Commerce Applications

报告人：Dr. Yan Wang（澳大利亚 Macquarie大学计算机系副教授，HDR Director）

报告时间：7月7日上午9点

报告地点：电子楼500会议室

Abstract:

Social networks have become the platforms for a variety of rich activities which include the selection of trustworthy targets via the recommendation of other participants. This requires mechanisms for the trust inference between non-adjacent participants, which are also expected to deliver trustworthy computation results. This talk will introduce the complex social network structures that take more information with impact on trust evaluation into account, and the heuristic algorithms for the NP-Complete multi-constrained optimal social trust path(s) selection problem.

Trust evaluation is important in service-oriented applications. While existing single-trust-value mechanisms can provide good but simple information to service customers, more trust information should be computed to indicate the trust level of a service provider more comprehensively. In addition, trust computation requires the accumulation of trust data for a long serving period. This raises the requirement of trust data analysis so as to use a small dataset to represent a large set of trust ratings. In contrast to most existing trust evaluation methods that compute a single trust value, in this talk, a trust vector approach will be introduced. The computation of the trust values in the trust vector is associated with both past transactions and a forthcoming transaction, and takes transaction context into account. The computed trust results can outline the reputation profile of a seller, predict the trustworthiness of the seller in a forthcoming transaction, help identify the value imbalance problem and avoid huge monetary losses of buyers.

Short Bio of the Speaker:
Dr Yan Wang is an Associate Professor and Higher Degree Research Director in the Department of Computing, Macquarie University, Australia. He received his B. Eng, M. Eng and Doctorate Degree of Engineering in computer science and technology from Harbin Institute of Technology, P.R. China. Prior to joining Macquarie University in 2003, he was a Postdoctoral Fellow in the Department of Computer Science, School of Computing, National University of Singapore.

Dr Yan Wang has been the Chief Investigator of 2 Australia Research Council Discovery projects. He has published a number of research papers in prestigious international journals and conferences. His research interests cover trust computing, social computing, services computing, electronic commerce, and computer security. Dr. Yan Wang is now serving on the editorial boards of Service-Oriented Computing & Applications journal, Springer, and Human-centric Computing and Information Sciences, Springer. Dr. Yan's research team received the Best Paper Award from prestigious IEEE SCC2010 and IEEE TrustCom 2012 respectively. His PhD students received the nomination of 2011 Australasian Distinguished Doctoral Dissertation, and 2009 and 2011 Chinese Government Awards for Outstanding Self-financed Students Aboard by China Scholarship Council.