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	A stochastic model for workflow QoS evaluation
	Xia, Yunni ; Wang, H.P. ; Huang, Y. ; Yuan, L.
	2006
英文摘要	Quality (QoS) prediction is one of the most important research topics of workflow. In this paper, we propose a stochastic model to evaluate QoS (make-span, reliability and cost) of workflow systems based on QWF-net, which extends traditional WF-net by associating tasks with firing-rate, failure-rate and cost-coefficient. Through a case study, we show that our framework is capable of modeling real-world workflow-based application. Also, Monte-carlo simulation in the case study indicates our analytical methods are consistent with simulation. We also present a sensitivity analysis technique to identify QoS bottleneck.The paper concludes with a comparison between our approach and related work. ? 2006 - IOS Press and the authors. All rights reserved.; EI; 0; 3-4; 251-265; 14
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/410050]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Xia, Yunni,Wang, H.P.,Huang, Y.,et al. A stochastic model for workflow QoS evaluation[J],2006.
APA	Xia, Yunni,Wang, H.P.,Huang, Y.,&Yuan, L..(2006).A stochastic model for workflow QoS evaluation..
MLA	Xia, Yunni,et al."A stochastic model for workflow QoS evaluation".(2006).

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