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Related Experiment Videos

A web services choreography scenario for interoperating bioinformatics applications.

Remko de Knikker1, Youjun Guo, Jin-Long Li

  • 1Center for Medical Informatics, Department of Anesthesiology, Yale University School of Medicine, PO Box 208009, New Haven, CT 06520, USA. remkodeknikker@hotmail.com

BMC Bioinformatics
|April 29, 2004
PubMed
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Web services offer a standardized XML-based approach to integrate heterogeneous bioinformatics applications, overcoming limitations of traditional web interfaces for genome-wide data analysis. Implementing these services, particularly with workflow engines, enhances machine processing capabilities for biological data.

Area of Science:

  • Bioinformatics
  • Computational Biology
  • Genomics

Background:

  • Genome-wide data analysis necessitates integrating diverse databases and tools.
  • Heterogeneous platforms, non-standard formats, and firewall issues hinder traditional web-based bioinformatics application interoperability.
  • Web services, using XML-based messaging, provide a standardized solution for inter-application communication.

Purpose of the Study:

  • To demonstrate the advantages of web services over traditional web interfaces for bioinformatics.
  • To create a machine-readable workflow for the HAPI gene expression analysis utility.
  • To compare different approaches for implementing XML-based bioinformatics workflows.

Main Methods:

  • Developed a web services workflow replicating the HAPI gene expression analysis functionality.

Related Experiment Videos

  • Utilized document-style XML messages for data exchange between web services.
  • Compared three implementation approaches: a hard-coded Java application, Collaxa BPEL Server, and Taverna Workbench.

    • Main Results:

    • The web services workflow successfully replicated HAPI functionality, enabling machine processing of gene expression data.
    • Compared to HTML output, XML-based messages from web services are semantically interpretable by computers.
    • The hard-coded Java application provided a practical, ad-hoc solution for XML-based workflows.

    Conclusions:

    • Web services present a promising standard for unifying heterogeneous bioinformatics applications.
    • Web services choreography engines are maturing, with industry support increasing.
    • For current practical applications, a hard-coded Java approach is feasible for simple XML-based workflows, while advanced engines like Collaxa BPEL offer robust management for complex workflows.