Time Based QoS Modeling and Prediction for Web Services

被引：0
|
作者：
Chen, Leilei [1 ]
Yang, Jian [2 ]
Zhang, Liang [1 ]
机构：
[1] Fudan Univ, Sch Comp Sci, Shanghai, Peoples R China
[2] Macquarie Univ, Dept Comp, N Ryde, NSW 2109, Australia
来源：
SERVICE-ORIENTED COMPUTING | 2011年 / 7084卷
关键词：
PROBABILISTIC APPROACH;
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
Quality of Service (QoS) prediction and aggregation for composite services is one of the key issues in service computing. Existing solutions model service QoSs either as deterministic values or probabilistic distributions. However, these works overlooked an important aspect in QoS modeling, time. Most QoS metrics, such as response time, availability, are time-dependent. We believe time variation should be explicitly reflected in QoS modeling as well as aggregation. In this paper, we propose a dynamic web service QoS model to capture the time based QoS patterns, based on which QoS of composite services are aggregated.
引用
收藏
页码：532 / 540
页数：9
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