The Semantic Web should enable greater access not only to content but also to services on the Web. Users and software agents should be able to discover, invoke, compose, and monitor Web resources o ering particular services and having particular properties. As part of the DARPA Agent Markup Language program, we have begun to develop an ontology of services, called DAML-S, that will make these functionalities possible. In this white paper we describe the overall structure of the ontology, the service pro le for advertising services, and the process model for the detailed description of the operation of services. This white paper accompanies DAML-S version 0.6, which is available at http: www.daml.org services daml-s 2001 10 .
Anupriya Ankolekar, Mark H. Burstein, Jerry R. Hob