Knowledge acquisition is one of the most difficult and error-prone tasks that a knowledge engineer does while building a knowledge-based system.
The cost and performance of the application depends directly on the quality of the knowledge acquired.  During this process you must determine where in the organization the knowledge exists, how to capture it and how to disseminate this knowledge throughout the enterprise. The approach to knowledge capture may take on many forms. Developing a framework for knowledge acquisition will allow for a consistent method for capturing the knowledge of a particular enterprise, organization or human (domain) expert. A framework is a reusable design expressed as a set of abstract classes and the way their instances collaborate. It is a reusable design for all or part of a software system. By definition, a framework is an object-oriented design. It doesn't have to be implemented in an object-oriented language, though it usually is.
 
This framework enables a Knowledge Engineer to successfully capture, apply and validate knowledge.