qos-aware and multi-granularity service composition

ISCAS OpenIR

	qos-aware and multi-granularity service composition
	Feng Zaiwen; Peng Rong; Wong Raymond K.; He Keqing; Wang Jian; Hu Songlin; Li Bing
	2012
发表期刊	Information Systems Frontiers
ISSN	1387-3326
页码	1-15
摘要	Composition of Web services can be very complex, and usually involves multiple atomic services and varieties of message exchange patterns. Worst still, with the increasing amount of available services with varying granularity and quality, selecting the best combination of services becomes very challenging. This paper addresses the issues on multi-granularity service composition with awareness of the service quality. In particular, we consider how a new service composition plan is produced, while preserving its original observable behaviors of a service that are shown to the service user, by substituting the service with another service or a set of services of finer or coarser grain. The new plan aims to have services of better quality (if the corresponding underlying services are available). To achieve this, we firstly define a behavioral signature model to capture observable behaviors of services. We then present that two service composition plans are choreography equivalent if they comply with the same behavioral signature model. We then propose a behavioral extracting algorithm to obtain the behavioral signature model from a service composition plan. We also present a method to determine choreography equivalence. Finally we briefly describe our prototype implementation that captures all these proposed algorithms. © 2012 Springer Science+Business Media, LLC.; Composition of Web services can be very complex, and usually involves multiple atomic services and varieties of message exchange patterns. Worst still, with the increasing amount of available services with varying granularity and quality, selecting the best combination of services becomes very challenging. This paper addresses the issues on multi-granularity service composition with awareness of the service quality. In particular, we consider how a new service composition plan is produced, while preserving its original observable behaviors of a service that are shown to the service user, by substituting the service with another service or a set of services of finer or coarser grain. The new plan aims to have services of better quality (if the corresponding underlying services are available). To achieve this, we firstly define a behavioral signature model to capture observable behaviors of services. We then present that two service composition plans are choreography equivalent if they comply with the same behavioral signature model. We then propose a behavioral extracting algorithm to obtain the behavioral signature model from a service composition plan. We also present a method to determine choreography equivalence. Finally we briefly describe our prototype implementation that captures all these proposed algorithms. © 2012 Springer Science+Business Media, LLC.
收录类别	EI
关键词	Algorithms Web Services
部门归属	(1) State Key Lab of Software Engineering Wuhan University Luo-Jia-Shan Wuhan China; (2) School of Computer Wuhan University Luo-Jia-Shan Wuhan China; (3) School of Computer Science and Engineering University of New South Wales Sydney Australia; (4) Institute of Computing Technology Chinese Academy of Sciences Beijing China
语种	英语
内容类型	期刊论文
URI标识	http://ir.iscas.ac.cn/handle/311060/15448
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Feng Zaiwen,Peng Rong,Wong Raymond K.,et al. qos-aware and multi-granularity service composition[J]. Information Systems Frontiers,2012:1-15.
APA	Feng Zaiwen.,Peng Rong.,Wong Raymond K..,He Keqing.,Wang Jian.,...&Li Bing.(2012).qos-aware and multi-granularity service composition.Information Systems Frontiers,1-15.
MLA	Feng Zaiwen,et al."qos-aware and multi-granularity service composition".Information Systems Frontiers (2012):1-15.