An Adaptive Replanning Mechanism for Dependable Service-Based Systems

摘要：

A promising way to guarantee dependability of service-based systems (SBSs) is replanning service bindings dynamically with the environment changing. As embedded into system execution, such replanning process will directly affect the overall performance of SBSs. While various replanning techniques have been proposed up to now, it is still challenging that how to provide cost-effective replanning methods for highquality SBSs. In this paper, we propose a practical solution by improving the flexibility of replanning and establish an adaptive replanning mechanism for that. This new mechanism places more emphasis on the cause-effect relationship among system execution states, solution space changes, replanning strategies and their potential effects in system adaptation, and focuses on improving the following three leading aspects, i.e. replanning trigger, search scope determination and service selection, which affect the actual cost and effect of replanning. The main idea and key algorithms for implementing this adaptive replanning mechanism are presented. Besides this, empirical study based on a load rate querying service is used to illustrate and evaluate our approach.

关键词： dependable service-based system adaptation replanning mechanism replanning trigger search scope determination service reselection.

作者: Jun Na Guo-hong Li Bin Zhang Li Zhang Zhi-liang Zhu

作者单位: College of Information Science and Technology Northeastern University Shenyang, P.R.China Software C College of Information Science and Technology Northeastern University Shenyang, P.R.China College of Information Science and Technology Software College Northeastern University Shenyang, P.R Software College Northeastern University Shenyang, P.R.China

会议类型: 国际会议

会议名称: 2010 IEEE International Conference on e-Business Engineering(2010年电子商务工程国际研讨会 ICEBE 2010)

会议地点: 上海

会议语种:英文

页码: 262-269

在线出版日期: 2010-11-10（万方平台首次上网日期，不代表论文的发表时间）