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Title: Pragmatics and context awareness for web service ranking and selection
Author: Rong, Weng
ISNI:       0000 0004 2717 0448
Awarding Body: University of Reading
Current Institution: University of Reading
Date of Award: 2010
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Web service plays an important role in implementing Service Oriented Architecture (SOA) for achieving dynamic business process. With the mushrooming number of web services in public repositories, it is becoming vital to provide an efficient web service discovery with respect to a given consumer's requirement. Considerable efforts have been made to address this issue among which includes context aware discovery methods, which have been attained much importance. However, there are two major challenges in this kind of approaches. Firstly, the concept of context is too broad to be defined in a simpler way. As such a question has been raised on how to properly employ contextual information into web service discovery applica- tions. Secondly, a web service discovery process will return a large set of web service candi- dates, among which how to discern the best suited one has become a greater challenge. This research studies contextual information from a web service composition perspective and . explore the possibility of using personal profile to facilitate web service discovery, particu- larly focusing on web service selection as it is pointed out by some scholars that recommen- dation of a proper service is probably the most important task in web service discovery appli- cations. Since it is anticipated that a retrieved web service will often partake in some compo- sition processes, it can be argued that the web service composition provides some useful in- formation for web service discovery. Based on this hypothesis, two types of contextual infor- mation are identified to build up the personal profile, i.e. individual based usage history and group based usage history. The individual based usage history is the consumer's own experi- ence and its capacity is explored to show the feasibility in web service selection. However in reality it is inapplicable to rely on individual history to make decision. To overcome this kind of information insufficiency, a group based usage history is then developed to support coor- dination and knowledge sharing. Finally, a web service selection framework based on the proposed contextual information is presented. An experimental study is then conducted to validate its potential, result analysis is undertaken and some future work directions are identi- fied during the result analysis.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available