Web Services Search and Composition byombining Web 2.0 and Semantic Web Technology
Date Issued
2008
Date
2008
Author(s)
Yang, Te-Wei
Abstract
Web Services which are specific functionalities and can be combined to meet a particular user''s needs have become a mature technology in the past few years. However, theiscovery and search mechanism provided by UDDI based on keyword matching may leado an ambiguous answer. It is a challenge to target the suiting Web services precisely.emantic Web technology provides another option for service matching. It enables aervice profile to be described according to its functionalities in OWL, which is based on Description Logics. Recently, researchers are dedicated on studying Semantic Web technology as a primary tool for ontology-based Web Services searching and invocation. With help of precise semantics description, Web Services are able to be utilized automatically.nder such a Semantic Web search mechanism, Web Services profile and domainntology are both described by Description Logics. However, potential users often doot have any knowledge about Description Logics. That creates a huge gap and critically imposes high entrance barriers for the user. Besides, ontology maintenance is another important issue for Semantic Web applications. Ontology maintenance is a time-consuming job. ntology maintenance is usually controlled by a small group of people. But it haseveral drawbacks: (1) the addition can be time-consuming and lack of completion and (2) the ontology maintainer read the concept in the different manner from how potential user does. ccordingly, sometimes concepts become obsolete by the time they enter thentology.n the long run, ontology maintenance cannot be ignored especially in such a Semantic Web application.n this thesis, we proposed: (1) an open system architecture to lower the entrancearriers of Semantic Web applications, (2) a practical approach to ontology maintenance, and (3) a new prototype system. The Traveller was implemented based on our ontology-ased architecture and related methodologies. With the service composition and execution architecture, the user is able to find suiting Web Services, invoke services by defining BPEL4WS, and participate in collaborative ontology maintenance without knowing any Semantic languages.
Subjects
Description Logics
Ontology
OWL
Semantic Web
Semantic Web application
Semantic Web Service
Service Execution
SWRL
Web Services
Web 2.0
File(s)![Thumbnail Image]()
Loading...
Name
ntu-97-R95725047-1.pdf
Size
23.32 KB
Format
Adobe PDF
Checksum
(MD5):4c5ed9bf3363756fdff2ccb20db9d7ab