Knowledge modelling technologies such as ontologies and problem solving methods are gaining popularity as they enable the development of cost-effective and robust knowledge systems through a reuse-centred process model. In addition there is also much interest in modelling technology as a means to support the acquisition organization formalization and distribution of the knowledge assets of a company. This book provides an in-depth analysis of knowledge modelling technology illustrating the main tenets of this paradigm surveying the state-of-the-art and then presenting in detail the application of this technology to parametric design problems. This book will be of interest to readers who wish to learn about the state-of-the-art in knowledge technologies. More specifically the book offers a theoretical perspective and practical solutions to students researchers and practitioners working in the areas of knowledge-based systems knowledge management and design.