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| 一种Web Service的服务质量预测方法 |
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邵凌霜1,2, 周立1,2, 赵俊峰1,2, 谢冰1,2, 梅宏1,2
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1.北京大学 信息科学技术学院 软件研究所,北京 100871;2.高可信软件技术教育部重点实验室,北京 100871
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| 摘要: |
| 服务消费者在选择服务之前,通常需要基于其他消费者的经验对未使用过的服务的质量进行预测.考虑到不同服务消费者对同一服务的服务质量的感受之间可能存在较大的差别,提出了一种QoS(quality of service)预测方法.该方法以消费者的历史经验为基础,计算消费者之间以及服务之间的相似程度,并以此相似度为基础对消费者并未使用过的服务的QoS进行预测.实验结果表明,这种方法可以显著提高Web服务质量预测的准确性. |
| 关键词: Web服务 服务质量(QoS) 服务质量(QoS)预测 相似度 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60803011 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant Nos.2007AA010301 (国家高技术研究发展计划(863)); the National Basic Research Program of China under Grant No.2005CB321805 (国家重点基础研究发展计划(973)); the Science Fund for Creative Research Groups of China under Grant No.60821003 (国家创新研究群体科学基金) |
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| Web Service QoS Prediction Approach |
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SHAO Ling-Shuang,ZHOU Li,ZHAO Jun-Feng,XIE Bing,MEI Hong
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| Abstract: |
| Consumers need to make prediction on the quality of unused Web services before selecting. Usually, this prediction is made based on other consumers’ experiences. Being aware of different QoS (quality of service) experiences of consumers, this paper proposes a QoS prediction approach. This approach makes similarity mining among consumers and QoS data, and then predicts the QoS of the unused Web services from other consumers’ experiences. Experimental results show that with this approach the preciseness of QoS prediction for Web services can be improved significantly. |
| Key words: Web service quality of service (QoS) QoS (quality of service) prediction similarity |
