This book constitutes the refereed proceedings of the 4th International Conference on Knowledge Management, PAKM 2002, held in Vienna, Austria in December 2002.

The 54 revised full papers presented were carefully reviewed and selected from 90 submissions. The papers presented are dealing with knowledge management issues in the Internet age from the technological and business points of view as well as from the organizational and cultural viewpoints.

Keywords: Knowledge Management, Knowledge Processing, Knowledge-Based System, Knowledge Engineering, Knowledge Acquisition, Knowledge Discovery, Ontologies, XML, Web-Based Intermation Systems, Decision Making, Knowledge Portals, Semantic Web.