文档介绍：Ontology Learning for Semantic Web Services
Dr. Paul Buitelaar, DFKI GmbH, Saarbrücken, Germany
We describe the central role of ontologies in knowledge markup for semantic web services. Markup of
web services with ontology-based metadata will allow for dynamic discovery position.
However, because ontologies evolve over time and between applications, methods and tools will need
to be developed for automatic learning and adaptation of ontologies. Here we will focus on methods for
ontology learning from text (. from document collections corresponding to the application domain of
the ontology under consideration).
1 Introduction
In recent years, the evolved from a global medium for information exchange (directed mainly
towards human users) into a “global, virtual work environment”(for both human users and machines).
Building on the world-wide-web, developments such as Grid technology, web services and the
Semantic Web contributed to this transformation, the implications of which are now slowly but clearly
being integrated into all areas of the new digital society (e-business, e-government, e-science, etc.) In
particular, Grid technology allows for puting (Foster and Kesselman, 1999), web
services for a distributed workflow (. by use of WSDL and WSFL), and the Semantic Web for
increasingly intelligent and therefore autonomous processing (Ber