Buchtitel: Proceedings of the Common Industry Program at the federated event co-locating the three international conferences: DOA'02: Distributed Objects and Applications; ODBASE'02: Ontologies, Databases and Applied Semantics; CoopIS'02: Cooperative Information Syst
How do we measure ontology based search tools? How can we know if they perform better than the traditional methods for finding information on the Internet? We believe that one of the best way to answer this is to carry out a case study including a carefully designed field experiment where the tools are tested. In this paper we discuss the design considerations and set-up of filed experiments with Semantic Web tools, and we also give some result from our own field studies that was carried out within the EU IST-1999-10132 On-To-Knowledge project.