Knowledge acquisition has become a major area of artificial intelligence and cognitive science research. The papers in this book show that the area of knowledge acquisition for knowledge-based systems is still a diverse field in which a large number of research topics are being addressed. However, several main themes run through the papers. First, the issue of integrating knowledge from different sources and tools is a sallent topic in many papers. A second major topic in the papers is that of knowledge modelling. Research in knowledge-based systems emphasizes the use of generic models of...