Richard Kelly 
Practical Knowledge Engineering [PDF ebook] 

This book provides knowledge engineers with practical methods for initiating, designing, building, managing, and demonstrating successful commercial expert systems. It is a record of what actually works (and does not work) in the construction of expert systems, drawn from the author’s decade of experience in building expert systems in all major areas of application for American, European, and Japanese organizations. The book features: * knowledge engineering programming techniques * useful skills for demonstrating expert systems * practical costing and metrics * guidelines for using knowledge representation techniques * solutions to common difficulties in design and implementation