This thorough, practical work describes the entire process of building a knowledge-based application--from start to completion, from concept to operation--with clear, detailed treatments of planning, designing, building, and testing. Also discusses recent insights into knowledge representation, including previously unpublished information. Describes the full scope of knowledge representations available, such as frame-based, multiple context, and model-based representations, pointing out the attributes and drawback of each so that readers may make appropriate choices that serve their individual needs.