符合动态演变特性的网格资源发现机制研究

近年来人们对如何提高网格资源发现效率做了大量的研究,但却忽略了适应网格资源动态演变特性的重要性.针对这一问题,结合小世界理论的网络特征,提出了一种新的基于P2P分布式结构化的网格资源发现机制.通过计算资源节点间属性相似度的方法,将网格资源分类组织在不同的虚拟组织中,结合P2P技术构建出两层覆盖式资源发现模型,并设计出相应的资源查找算法DSRD (distributed structure grid resource discovery).仿真实验结果表明,DSRD算法既能够适应资源的动态特性,同时又可有效地提高资源发现效率.

Research on grid resource discovery mechanism with dynamic evolution characteristics

In recent years,a lot of work is done on how to improve the efficiency of resource discovery but ignored the importance of adapt to the dynamic evolution characteristics of grid resources.Considered with this problem and combined with features of small world network theory,a new P2P-based grid resource discovery mechanism with distributed architecture is proposed.Firstly by calculating the resource attribute similarity method,grid resources is organized in different virtual organizations according to their types,then based on P2P technology a two-tier overlay resource discovery model is built and the corresponding resource discovery algorithm is designed.The simulation results prove that DSRD algorithm can not only adapt to the dynamic feature of resource,but also effectively improve the resource discovery efficiency.