Text mining workflows construction with support of ontologies

In order to fulfill the ambitious goals of semantic Web services frameworks, there is important to support not only the Functional Semantics, but also the data semantics that is especially important by the invocation activity. This is together with bringing QoS Semantics to the Web Services also our goal in the context of the research project "semantic composition of web and grid services (APW- 0391-06)". In the paper we present a semantic model intended to describe grid data and text mining services, whereby the semantic information about the functional, data and QoS models is utilized to construct the resulting executable workflow.