Web Services have gained a momentum as a means for packaging existing data and computational resources in a form that is amenable for use and composition by third party applications. The life science community is certainly among the first adopters of Web Services. For example, "Taverna":http://www.mygrid.org.uk, a workflow workbench that is popular within the life science community, provides access to over 3500 thousands web services that can be composed by scientists for constructing and enacting their _in silico_ experiments. However, one of the main issues that hinders the wide adoption and use of Web Services is the difficulty in locating the “appropriate” Web Service, i.e., the Web Service that performs the... |