Web Services Matchmaking Based on OWL Ontologies and Description Logic Inferences
Date Issued
2004
Date
2004
Author(s)
Liu, Chih-Hsiung
DOI
en-US
Abstract
The Web services paradigm is believed to substantially alter the way business processes
cooperate. It follows an XML-based interfacing standard so that existing services
can be composed by a suitable choreographic language. However, the composition and
related discovery and matching tasks mostly have to be done manually. Though UDDI
has become a de facto standard for service discovery and matching, it does not provide
adequate semantic and can only support limited keyword search. Lack of semantic descriptions
about services renders UDDI incapable of providing inference ability which is
essential for supporting more sophisticated search constraints.
In this thesis, we propose an ontology-based scheme for service matching and composition.
The scheme consists of a service registry and a matching procedure and is
parameterized by domain ontologies and rules. We assume that all services have their
capabilities characterized by OWL and described in their service descriptions. The service
registry verifies the consistency of service descriptions and stores their capabilities
in the knowledge base. Upon receiving a service requirement, our matching procedure
reduces the service matching problem to Description Logic inference problems, which can
be solved by existing inference engines. The matching procedure applies domain rules
on top of the domain ontologies to provide domain specific inference services. We have
developed a prototype matching system with tourism-related ontologies to show how services
about transportation and hotel can be inferred accurately and e±ciently.
Subjects
知識本體
網路服務媒合
推論
語義網路
Ontology
Service Composition
Description Logic
Semantic Web
Matchmaking
Type
other
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