NDLI: A Cost Model for Participating Roles Based on Choreography Semantics

Content Provider	IEEE Xplore Digital Library
Author	Pandey, R.S. Chaudhary, B.D.
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci., Birla Inst. of Technol., Allahabad (Pandey, R.S.) \|\| Dept. of Comput. Sci. & Eng., Motilal Nehru Nat. Inst. of Technol., Allahabad (Chaudhary, B.D.)
Abstract	Emergence of web services have generated new business models, opportunities and challenges. One of the major challenge faced in effecting utilization of these web services is composition of non functional features such as performance, security and geographical affinity of these services. Existing standards do not address the composition of such non functional features. A formal model based on trace semantics and incorporating QoS have been proposed to estimate minimal/maximal/average cost of a given choreography. This trace semantics can not differentiate between different participants providing same kind of services in a collaboration. The cost attribute of a choreography is dictated by participating role instances rather than role type. A formal semantics of choreography incorporating this aspect has been presented in the literature. In this paper, we present a model of choreography with cost based on semantics which differentiates between participant roles and their types. Our model views the cost attribute of a participating role as structured one having two components. The first component of the cost is due to internal operations performed by a role whereas second component of cost is due to interaction with other roles. We demonstrate our model with an example.
Starting Page	277
Ending Page	283
File Size	328086
Page Count	7
File Format	PDF
ISBN	9780769534732
DOI	10.1109/APSCC.2008.117
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-12-09
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer science Context-aware services Web services Web and internet services Humans Quality of service Cost function International collaboration Simple object access protocol National security
Content Type	Text
Resource Type	Article

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