Title page for ETD etd-04272004-124255


Type of Document Dissertation
Author Ouzzani, Mourad
URN etd-04272004-124255
Title Efficient Delivery of Web Services
Degree PhD
Department Computer Science
Advisory Committee
Advisor Name Title
Bouguettaya, Athman Committee Chair
Barkhi, Reza Committee Member
Chen, Ing-Ray Committee Member
Fox, Edward Alan Committee Member
Ramakrishnan, Naren Committee Member
Keywords
  • Web Databases
  • Query Optimization
  • Semantic Web
  • Web Services
Date of Defense 2004-01-16
Availability unrestricted
Abstract
This dissertation addresses issues for the

efficient access to Web databases and

services. We propose a distributed ontology for a

meaningful organization of and efficient access

to Web databases. Next, we dedicate most of

our work on presenting a comprehensive query

infrastructure for the emerging concept of Web

services. The core of this query infrastructure

is to enable the efficient delivery of Web

services based on the concept of Quality of

Web Service. Treating Web services as first

class objects is a fundamental step

towards achieving the envisioned Semantic

Web. Semantics-aware processing of

information requires intensive use of Web

services. In our research, we propose a

new query model where queries are resolved by

combining Web service invocations. To

efficiently deploy such scheme, we propose

an optimization strategy based on aggregating

Quality of Web service (QoWS) of different

Web services. QoWS is adjusted through a

dynamic rating scheme and multilevel

matching. Web service rating provides an

assessment of their behavior. The multilevel

matching allows a larger solution space

by enabling similar and partial answers.

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