Information Technology Reference
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phenomenon and to add a mediator to glue partially compatible
services. Finally, there may be many configurations providing identical
functionality with different QoS; this topic gives a Web service
functional configuration model using Petri nets and uses a novel linear
programming formulation to find the configuration with the best QoS.
Chapters 6-8 cover applications. There is a strong demand to
compose various health services for the creation of personalized health-
care service systems. This topic presents our experience in building a
public healthcare information service platform and in applying service
composition in such a platform. This topic also discusses the wide
application of Web services and workflows in the e-Science domain.
Specifically, it introduces the design and implementation of caGrid
Workflow Toolkit that supports service discovery, composition, and
orchestration in the cancer Biomedical Informatics Grid (caBIG).
Finally, the proliferation of social network services has started to
impact services computing, especially in the e-Science domain.
This topic presents a network analysis on myExperiment, an online
biological workflow repository, and reveals the usage pattern of services
in scientific workflows. Based on this network model, we develop a
GPS-like system that provides guidance and recommendations to
domain scientists when they perform service composition to fulfill
their research needs.
