应IDC实验室李瑞轩副教授邀请，美国阿肯色大学（University of Arkansas）沈海英助理教授将于2008年6月16日下午2：30－4：00在计算机学院会议室（南1楼433）举办学术讲座，欢迎广大师生参加。
讲座题目：P2P-based Intelligent Resource Discovery in Internet-based Distributed Systems
讲座摘要：
Internet-based distributed systems enable globally scattered resources to be collectively pooled and used in a cooperative manner to achieve unprecedented petascale supercomputing capabilities. Numerous resource discovery approaches have been proposed to help achieve this goal. To report or discover a multi-attribute resource, most approaches use multiple messages with one message for each attribute, leading to high overhead. Anther approach can reduce multi-attribute to one index, but is not practically effective in an environment with a large number of different resource attributes. Furthermore, few approaches are able to locate resources geographically close to the requesters, which is critical to system performance. This talk will present a P2P-based intelligent resource discovery mechanism (PIRD). It weaves all attributes into a set of indices using locality sensitive hashing, and then maps the indices to a structured P2P overlay. It further incorporates Lempel-Ziv-Welch algorithm to compress attribute information for higher efficiency. In addition, it helps to search resources geographically close to requesters by relying on a hierarchical P2P structure. PIRD significantly reduces overhead and improves the efficiency and effectiveness of resource discovery in Internet-based distributed systems. Theoretical analysis and simulation results demonstrate the efficiency and effectiveness of PIRD in comparison with other approaches. It dramatically reduces overhead and yields significant improvements on the efficiency and effectiveness of resource discovery.
沈海英助理教授简介：
Haiying Shen received the BS degree in Computer Science and Engineering from Tongji University, China in 2000, and the MS and Ph.D. degrees in Computer Engineering from Wayne State University in 2004 and 2006, respectively. She is currently an Assistant Professor in the Department of Computer Science and Computer Engineering of the University of Arkansas. Her research interests include distributed and parallel computer systems and computer networks, with an emphasis on peer-to-peer and content delivery networks, wireless networks, resource management in cluster and grid computing, and data searching. Her research work has been published in top journals and conferences in these areas. She was a co-Chair of the RFID track in IEEE-CASE 2008, a PC member of many conferences such as ICPP and EUC. She is a member of IEEE and ACM.
华中科技大学智能与分布计算实验室
2008年6月15日
