Volume 3, Issue 2, April - June 2006 : International Journal of Web Services Research (JWSR)

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The contents of the latest issue of:

International Journal of Web Services Research (JWSR)
Official Publication of the Information Resources Management Association
Volume 3, Issue 2, April - June 2006
Published: Quarterly in Print and Electronically
ISSN: 1545-7362
EISSN: 1546-5004
http://www.servicescomputing.org/jwsr 

Editor-In-Chief: Liang-Jie Zhang, IBM T.J. Watson Research Center USA

EDITORIAL PREFACE:

?Web Services in Data, Control, and Applications?

Jia Zhang, Northern Illinois University, USA
Liang-Jie Zhang, Editor-In-Chief, IBM, T.J. Watson Research Center, USA

This issue of the International Journal of Web Services research (JWSR) is 
a collection of five papers on various topics of Web services.

RESEARCH PAPERS

PAPER ONE: 

?Search Strategies for Automatic Web Service Composition?

Nikola Milanovic, Humboldt University Berlin, Germany
Miroslaw Malek, Humboldt University Berlin, Germany

This paper investigates architectural properties required for supporting 
automatic service composition. First, composable service architecture will 
be described, based on modeling Web Services as abstract machines 
supported by formally defined composition operators. Based on the proposed 
infrastructure, the authors give several options for achieving automatic 
service composition by treating it as a search problem. Namely, basic 
heuristic, probabilistic, learning-based, decomposition and bidirectional 
automatic composition mechanisms will be presented and compared. Finally, 
this article discusses the impact and outlook for automatic composition.

To obtain a copy of the entire article, click on the link below.
http://www.idea-group.com/articles/details.asp?id=5964


PAPER TWO: 

?XWRAPComposer: A Multi-Page Data Extraction Service?

Ling Liu, Georgia Institute of Technology, USA
Jianjun Zhang, Georgia Institute of Technology, USA
Wei Han, IBM Research, Almaden Research Center, USA
Calton Pu, Georgia Institute of Technology, USA
James Caverlee, Georgia Institute of Technology, USA
Sungkeun Park, Georgia Institute of Technology, USA
Terence Critchlow, Lawrence Livermore National Laboratory, USA
David Buttler, Lawrence Livermore National Laboratory, USA
Matthew Coleman, Lawrence Livermore National Laboratory, USA

The authors of this paper present a service-oriented architecture and a 
set of techniques for developing wrapper code generators, including the 
methodology of designing an effective wrapper program construction 
facility and a concrete implementation, called XWRAPComposer. This wrapper 
generation framework has two unique design goals. First, the authors 
explicitly separate tasks of building wrappers that are specific to a Web 
service from the tasks that are repetitive for any service.  Second, 
inductive learning algorithms that derive information flow and data 
extraction patterns by reasoning about sample pages or sample 
specifications are used. More importantly, the authors design a 
declarative rule-based script language for multi-page information 
extraction, encouraging a clean separation of the information extraction 
semantics from the information flow control and execution logic of wrapper 
programs.

To obtain a copy of the entire article, click on the link below.
http://www.idea-group.com/articles/details.asp?id=5965


PAPER THREE: 

?An Ontology-Based Content Model for Intelligent Web Content Access 
Services?

Stephen J. H. Yang, National Central University, Taiwan
Norman W. Y. Shao, National Kaohsiung First University of Science and 
Technology, Taiwan

Intelligent Web content access is a fundamental Web service, representing 
the first step toward semantic Web services. A lack of adequate and 
sufficient interpretation for content in current methods impedes access to 
content. This study regards Web content as any content described and 
published in the format of a markup language such as HTML or XML. In this 
paper, the authors present the Content Model, combining subjective 
information from the content itself with objective information from 
people?s perceptions of this content, providing an integrated 
interpretation of a content item. During accessing, a search engine 
examines the description of a content item, as found in the Content Model, 
to find matching files. An ontology-based Content Model is developed and 
applied to the Web environment to enhance Web content accessibility. 
Results of this study demonstrate that the proposed Content Model provides 
essential content descriptions for locating, accessing, and interacting 
with content providers.

To obtain a copy of the entire article, click on the link below.
http://www.idea-group.com/articles/details.asp?id=5966


PAPER FOUR:

?Self-Reconfiguration of Service-Based System for Service Level Agreements 
and Resource Optimization?

Ying Li, IBM China Research Laboratory, China
Kewei Sun, IBM China Research Laboratory, China
Jie Qiu, IBM China Research Laboratory, China
Ying Chen, IBM China Research Laboratory, China

In this paper, the authors propose an autonomic computing approach to the 
problem of reconfiguration, that is, enabling the service-based system to 
configure itself by means of a loop of monitoring, analyzing, planning and 
executing. This article begins by formalizing the definition of 
reconfiguration. Then, a description is given on how to implement the 
autonomic computing mechanisms for reconfiguring service-based systems to 
satisfy Service Level Agreements with minimal resource consumption. The 
approach is demonstrated on a resilient service provisioning environment. 
Finally, the preliminary experiments are evaluated to determine the 
effectiveness of the proposed approach.

To obtain a copy of the entire article, click on the link below.
http://www.idea-group.com/articles/details.asp?id=5967


PAPER FIVE: 

?UML-Based Support for Designing and Validating Web Service Descriptions?

Juanjuan Jiang, Tampere University of Technology, Finland
Tarja Systä, Tampere University of Technology, Finland

WSDL descriptions, often characterized as IDLs for Web services, are a key 
for Web service interoperability. Therefore, special care should be taken 
in designing WSDL descriptions. In this paper, the authors present an 
approach that provides UML-based support to design and validate WSDL 
descriptions. To promote Web service interoperability, WS-I organization 
provides a Basic Profile that defines clarifications, refinements, 
interpretations, and amplifications of Web service specifications, 
including WSDL. The article suggests UML-based profiles to define 
structural rules of WSDL documents as well as Basic Profile 
recommendations for WSDL descriptions. These profiles can be used to guide 
the user in designing correct and Basic-Profile-compliant WSDL 
descriptions and to check the validity of existing WSDL descriptions. A 
method and tools for such validity checking is proposed, and the 
applicability of the approach with case studies.

To obtain a copy of the entire article, click on the link below.
http://www.idea-group.com/articles/details.asp?id=5968


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For full copies of the above articles, check for this issue of the 
International Journal of Web Services Research (JWSR) in your 
Institution's library.  If your library is not currently subscribed to 
this Journal, please recommend JWSR subscription to your librarian.
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Note: For only $18.00, purchase a JWSR article or any of over 1,100 single 
journal articles available electronically by visiting 
www.idea-group.com/articles. 

CALL FOR PAPERS

Mission of JWSR:

Web Services are among the most important emerging technologies in the 
e-business, computer software and communication industries. The Web 
Services technologies will redefine the way that companies do business and 
exchange information in the twenty-first century. They will enhance 
business efficiency by enabling dynamic provisioning of resources from a 
pool of distributed resources. Due to the importance of the field, there 
is a significant amount of ongoing research in the areas. In a parallel 
effort, standardization organizations are actively developing standards 
for Web Services. The Web Services are creating what will become one of 
the most significant industries of the new century. The International 
Journal of Web Services Research is designed to be a valuable resource 
providing leading technologies, development, ideas, and trends to an 
international readership of researchers and engineers in the field of Web 
Services.

Coverage of JWSR:

Web Services architecture 
Web Services security 
Frameworks for building Web Service applications 
Composite Web Service creation and enabling infrastructures 
Web Services discovery 
Resource management for Web Services 
Solution Management for Web Services 
Dynamic invocation mechanisms for Web Services 
Quality of service for Web Services 
Web Services modeling 
Web Services performance 
UDDI enhancements 
SOAP enhancements 
Case Studies for Web Services 
E-Commerce applications using Web Services 
Grid based Web Services applications (e.g. OGSA) 
Business process integration and management using Web Services 
Multimedia applications using Web Services 
Mathematic foundations for service oriented computing 
Communication applications using Web Services 
Interactive TV applications using Web Services 
Semantic services computing 
Business Grid

Interested authors should consult the Journal's manuscript submission 
guidelines at http://www.idea-group.com/jwsr . Please submit your paper 
through the online system (http://www.servicescomputing.org/jwsr).

All inquiries should be sent to:
Editor-In-Chief: Dr. Liang-Jie Zhang at zhanglj AT us.ibm.com