Knowledge Representation

• A good knowledge representation format is essential for any large (AI) system.
• The next two slides are on semantic nets, logic, and frames.
• and-or trees
• decision trees
• Exam questions
• Design a decision tree to choose how to cross the street.
• Make up an and-or tree with 12 nodes.
• How do decision trees relate to Rule Based Systems
• And-or trees are readily used to explain the flow of control of a rule based system using a particular type of chaining. What is that type of chaining?
• What are the fundamental problems of a particular KR mechanism?
• What are the strengths of a particular KR mechanism?