支持事务机制的Web服务组合QoS属性预测方法

吴江霞; 杨放春

doi:10.3724/SP.J.1146.2006.01441

支持事务机制的Web服务组合QoS属性预测方法

doi: 10.3724/SP.J.1146.2006.01441

基金项目:

国家973规划(2003CB314806)和教育部长江学者和创新团队发展计划资助课题

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出版历程
- 收稿日期: 2006-09-22
- 修回日期: 2007-03-19
- 刊出日期: 2008-03-19

QoS Prediction of Web Service Composition with Transaction Mechanism

摘要

摘要: 该文提出了一种支持事务机制的Web服务组合QoS属性预测方法。分析了事务异常处理策略及其对组合服务执行流程的影响，定义了支持事务机制的组合服务描述模型，并基于此模型提出了组合服务QoS属性预测算法。实验证明该文方法在对具有事务机制的组合服务进行预测时，准确度优于已有的工作流预测方法，具有较好的可行性和有效性。
- Web服务组合; QoS预测; 事务机制
Abstract: An approach for QoS prediction of Web service composition with transaction mechanism is proposed. With the analysis on the exception handler policy of the transaction and the effect on the execution processes of composite services, the specification model of composite services is defined. On the base of the model, an algorithm to predict the QoS of composite services is proposed. The experiment shows the approach gets lower error rate than the existing workflow based prediction approach while estimating the composite service with transaction mechanism, and proves the feasibility of the algorithm.

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参考文献(1)

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