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Recycling workflows and services through discovery and reuse
Wroe, Chris and Goble, Carole and Goderis, Antoon and Lord, Phillip and Miles, Simon and Papay, Juri and Alper, Pinar and Moreau, Luc (2007) Recycling workflows and services through discovery and reuse. Concurrency and Computation: Practice and Experience, 19 (2). pp. 181-194.
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Scientific workflows are becoming a valuable tool for scientists to capture and automate e-Science procedures. Their success brings the opportunity to publish, share, reuse and repurpose this explicitly captured knowledge. Within the myGrid project, we have identified key resources that can be shared including complete workflows, fragments of workflows and constituent services. We have examined the alternative ways these can be described by their authors (and subsequent users), and developed a unified descriptive model to support their later discovery. By basing this model on existing standards, we have been able to extend existing Web Service and Semantic Web Service infrastructure whilst still supporting the specific needs of the e-Scientist. myGrid components enable a workflow life-cycle that extends beyond execution, to include discovery of previous relevant designs, reuse of those designs, and subsequent publication. Experience with example groups of scientists indicates that this cycle is valuable. The growing number of workflows and services mean more work is needed to support the user in effective ranking of search results, and to support the repurposing process.
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