Database system is the infrastructure of the modern information system. The R＆D in the database system and its technologies is one of the important research topics in the field. The database R＆D in China took off la...Database system is the infrastructure of the modern information system. The R＆D in the database system and its technologies is one of the important research topics in the field. The database R＆D in China took off later but it moves along by giant steps. This report presents the achievements Renmin University of China （RUC） has made in the past 25 years and at the same time addresses some of the research projects we, RUC, are currently working on. The National Natural Science Foundation of China supports and initiates most of our research projects and these successfully conducted projects have produced fruitful results.展开更多
非结构化P2P网络在大规模网络环境下的资源共享方面具有优越性,针对这些网络的快速资源定位是一个关键问题。Bittorrent是一个简单、高效的P2P文件共享系统,但是该系统只解决了如何高效地下载资源,而没有解决如何高效地搜索资源。该文...非结构化P2P网络在大规模网络环境下的资源共享方面具有优越性,针对这些网络的快速资源定位是一个关键问题。Bittorrent是一个简单、高效的P2P文件共享系统,但是该系统只解决了如何高效地下载资源,而没有解决如何高效地搜索资源。该文针对目前BitTorrent网络中资源获取方式存在的不足之处,提出了一种基于BitTorrent P2P网络的快速搜索策略——Incentive Hop Search,并建立模拟程序,对检索的性能与效果做了初步的验证。实验结果表明了该方法的有效性。展开更多
基金Supported by the National Natural Science Foundation of China. Acknowledgements The National Science Foundation of China supported these works. Thanks to NSFC and all the members of the research groups in Renmin University of China.
文摘Database system is the infrastructure of the modern information system. The R＆D in the database system and its technologies is one of the important research topics in the field. The database R＆D in China took off later but it moves along by giant steps. This report presents the achievements Renmin University of China （RUC） has made in the past 25 years and at the same time addresses some of the research projects we, RUC, are currently working on. The National Natural Science Foundation of China supports and initiates most of our research projects and these successfully conducted projects have produced fruitful results.
文摘非结构化P2P网络在大规模网络环境下的资源共享方面具有优越性,针对这些网络的快速资源定位是一个关键问题。Bittorrent是一个简单、高效的P2P文件共享系统,但是该系统只解决了如何高效地下载资源,而没有解决如何高效地搜索资源。该文针对目前BitTorrent网络中资源获取方式存在的不足之处,提出了一种基于BitTorrent P2P网络的快速搜索策略——Incentive Hop Search,并建立模拟程序,对检索的性能与效果做了初步的验证。实验结果表明了该方法的有效性。
