K-CAP

In today's knowledge-driven world, effective access to and use of information is a key enabler for progress. Modern technologies not only are themselves knowledge-intensive technologies, but also produce enormous amounts of new information that we must process and aggregate. These technologies require knowledge capture, which involve the extraction of useful knowledge from vast and diverse sources of information as well as its acquisition directly from users. Driven by the demands for knowledge-based applications and the unprecedented availability of information on the Web, the study of knowledge capture has a renewed importance.

This volume presents the papers and poster and demo descriptions for the Fifth International Conference on Knowledge Capture (KCAP 2009). K-CAP 2009 brought together researchers that belong to several distinct research communities, including knowledge engineering, machine learning, natural language processing, human-computer interaction, artificial intelligence and the Semantic Web. This year's conference continues its tradition of being the premier forum for presentation of research results and experience reports on leading edge issues of knowledge capture.

The call for papers attracted 81 submissions from Asia, Europe, and North America. The international program committee accepted 21 papers that cover a variety of topics, including research on knowledge extraction, ontologies and vocabularies, interactive systems, evaluation of knowledge-based systems, and other topics. In addition, this volume includes descriptions of 21 posters and demos that were presented at the conference. The K-CAP 2009 program included two keynote talks. Professor Daniel Weld gave the keynote address entitled "Machine Reading: from Wikipedia to the Web". Professor Nigel Shadbolt talked about "Web Science: A New Frontier" in his keynote address. Two tutorials and four workshops rounded up the conference program. We hope that these proceedings will serve as a valuable reference for security researchers and developers.