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简要介绍网格信息检索的相关概念及服务内容,针对单一索引和查询处理机制所导致的传统信息检索系统各组件必须同步工作的问题,基于OGSA体系架构,构建支持分布式计算的接口模块,实现网格环境下的异步检索。为满足网格检索系统的安全性,引入虚拟组织策略域,通过OGSA的安全层保证在虚拟组织中获取目标资源,从而实现对资源的协调共享和使用。
This paper briefly introduces the related concepts and service contents of grid information retrieval. In view of the problem that each component of traditional information retrieval system must work in synchronism caused by a single index and query processing mechanism, an interface module supporting distributed computing is constructed based on OGSA architecture and implemented Asynchronous Retrieval in Grid Environment. In order to satisfy the security of grid retrieval system, the strategy of virtual organization is introduced, and the security layer of OGSA ensures that the target resource can be obtained in the virtual organization so as to realize the resource sharing and usage.