NDLI: Supporting Dynamic Workflows in a Ubiquitous Environment

Content Provider	IEEE Xplore Digital Library
Author	Minsoo Lee Hyejung Yoon Hyoseop Shin
Copyright Year	2007
Description	Author affiliation: Ewha Womans Univ., Seoul (Minsoo Lee; Hyejung Yoon)
Abstract	The ubiquitous environment is increasingly being considered as a platform for finding and integrating separate distributed services. Individuals or businesses can provide their services in the form of Web services in such a ubiquitous environment, and business processes that integrate such ubiquitous Web services can be formed using workflow technology. Workflow design and execution in such a dynamic and distributed environment needs to be very flexible in terms of incorporating changes. Web services may suddenly become unavailable and backup services may need to be found, or several providers of services may not be identifiable at the design time of the workflow. Therefore, dynamically finding and invoking Web services based on the workflow semantics need to be supported. BPEL4WS is the most popular and promising language among the workflow design languages for Web services. However, one of the problems with BPEL4WS is that it references the fixed WSDL file, which makes the workflow less flexible in dynamic and ubiquitous environments. Another problem is that it limits the amount of resources to only those that are specified. This makes it difficult to support semantics for finding similar or backup services in a ubiquitous network. This paper focuses on extending the BPEL4WS framework to include semantics by adding semantic constructs into DAML-S ontologies and making use of ontologies in the BPEL4WS engine in order to support dynamic workflows suitable for ubiquitous environments.
Starting Page	272
Ending Page	277
File Size	423916
Page Count	6
File Format	PDF
ISBN	0769527779
DOI	10.1109/MUE.2007.198
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-26
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer science Web services Web and internet services Standards organizations Companies Ontologies Search engines Automatic control Microstrip Monitoring
Content Type	Text
Resource Type	Article

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