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Welcome to My Web Page
Dhavalkumar Thakker BEng, Msc
PhD Candidate
School of Computing & Informatics
Nottingham Trent University
CIB, Clifton Lane, Nottingham
NG11 8FN , United
Kingdom
Office: Room 217, CIB Building
Tel:
+44
(0)115 848 8387 (Direct line)
+44 (M)77 2306 1118
Email:
dhavalkumar.thakker@ntu.ac.uk
BIOGRAPHIC SKETCH
I am a PhD student in the WebServices Composition at the Intelligent Simulation and Modelling Group in the Nottingham Trent University. My thesis advisors are Dr. Taha Osman and Prof. David Al-Dabass. Prior to joining the NTU, I completed my masters degree at Brunel University, London and bachelors' degree at Gujarat University, India.
From 2002 to 2003, I was a Lecturer at Department of Information Technology - C.I.T.C, Gujarat-India. I am a student member of IEE(The Institute of Electrical Engineers) and GGF(Global Grid Forum).
RESEARCH PROJECT TITLE
An Intelligent Framework for Dynamic Web Services composition in the Semantic Web
PUBLICATIONS
Conference Papers:
[1] Thakker, D., Osman, T., and Al-Dabass, D., "Semantics based automatic assignment in Web services composition", Accepted for the 9th International Conference on Computer Modelling and Simulation Conference, 4-6 April, 2006, Oxford, UK.
[2] Thakker, D., Osman, T., and Al-Dabass, D., "Bridging the Gap between Workflow and Semantic-based Web services Composition", In the Proceedings of the Workshop on WWW Service Composition with Semantic Web Services 2005 (wscomps05), the 2005 IEEE/WIC/ACM International Joint Conference on Web Intelligence (WI 2005) and Intelligent Agent Technology (IAT 2005), Compiègne, France, September 19, 2005. ISBN 2-913923-18-6, p 13-23.
[3] Thakker, D., Osman, T., and Al-Dabass, D., "Web services Composition: A Pragmatic View of the present and the future", In the Proceedings of the 19th European Conference on Modeling and Simulation, June 1-4, 2005, ISBN 1-84233-112-4, p 826-832.
[4] Thakker, D., Osman, T., and Al-Dabass, D., "Private UDDI registry models for B2B Web Services", In the Proceedings of the Eighth United Kingdom Simulation Society (UKSIM) Conference, 6-8 April, 2005, Oxford, UK.
RESEARCH BACKGROUND
The last decade has witnessed an explosion of application services delivered electronically, ranging from e-commerce and Internet information service, to services that facilitate trading between business partners, better known as Business-to-Business (B2B) relationships. Traditionally these services are facilitated by distributed technologies such as RPC, CORBA, RMI, and more recently Web services.
Extensive use of XML (eXtensible Markup Language) for messaging, discovery, and description makes Web services platform, language neutral technology and provides edge over other distributed technologies. Moreover, multiple Web services can be integrated either to provide a new, value-added service to the end-user or to facilitate co-operation between various business partners. This integration of Web services is called "Web services composition".
Despite the evident popularity of Web services as a platform and language-neutral distributed computing paradigm and the value-added dimension that composition adds to it, the practical adoption of the technology is still to gather the expected pace. Assistance with the facilitation of the composition process to the service providers and the composers, play a major role in encouraging the adoption of the Web services technology.
My Research aims to contribute towards promoting the adoption of the Web service technology by implementing a development framework for dynamic Web services composition to reduce the service providers' and composers' burden of composition of Web services.
CURRENT PROJECTS
Bridging the Gap between Semantic and Non-Semantic standards for Web services Composition
The most practically deployed Web services composition techniques use the theory of business workflow-management as composition process model to achieve formalization for control and data flow. Mainly based on the Business Process Execution Language (BPEL) standard, these techniques also have practical capabilities that fulfil the needs of the business environment, such as fault handling and state management. However, the main shortcoming of these techniques is the static composition approach, where the service selection and flow management are done a priori and manually. In contrast, composition techniques based on the semantic web, such as Ontology Web Language for Web services (OWL-S), use ontologies to provide a mechanism to describe the Web services functionality in machine-understandable form, making it possible to discover, and integrate Web services automatically.
The focus of this project was on bridging the gap between the two approaches by introducing semantics to workflow-based composition. Developed framework exploits the BPEL process creation mechanism combined with semantic domain concept (OWL) to implement an automatic composition-programming framework providing a hybrid solution that merges the benefit of practicality of use and adoption popularity of workflow-based composition. Framework has advantage of using semantic description to aid both service developers and composers in the composition process and facilitating the dynamic integration of Web services into it. The paper [Bridging the Gap between Workflow and Semantic-based Web services Composition] provides more detail on implementation.
Artificial Intelligence and Semantic Web based framework for Web services discovery, matchmaking and composition
In this project, I aim to implement Artificial Intelligence (A.I) based problem solving method to formalize discovery, matchmaking and automatic composition of Web services. In addition to automating composition, focus of the project is on other important aspects of composition i.e. aspects related to quality of composition, where the framework will be measured based on the Quality of Service (QoS) criteria: transparency, efficiency, cost, availability, integrity and scalability.
Semantic Case Based Reasoner (S-CBR) for Web services Discovery and Matchmaking
Click to retrive the Ontologies for this project.
This is a personal page and does not necessarily reflect the position of Nottingham Trent University. Updated March 2006
