In order to improve the reliability of grid services, the grid services are divided into subtasks and then are assigned to different resources for processing in the proposed model.

• 在星型网格系统的网格服务可幸性分析中引入了节点失效恢复机制，并考虑了节点毅软件可靠性对网格服务可靠性的影响，同时采用子任务并行处理和子任务冗余方法提高服务的可靠性。