Knowledge based systems

9 important questions on Knowledge based systems

What are the components of a knowledge based system

  • Knowledge base
  • Inference base
  • Developer interface
  • Systems interface
  • User interface
  • Knowledge acquisition

What are knowledge based systems

AI systems that use a clearly defined body of knowledge to obtain their goals

Why knowledge based systems

Knowledge is permanent, available any time, consistent
Also: creativity, flexibility
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What is the basic architecture of a knowledge based system

  • Knowledge is separated from the inference and control
  • Different ways to represent knowledge
  • Heuristic search

What is a knowledge base

  • Heart of the system, detailed knowledge supplied by expert
  • Main knowledge representation forms

What are knowledge representation forms

  • OAV
  • Structured rules
  • Semantic networks
  • Frames
  • Objects
  • Logic

What is the inference engine

  • Uses knowledge to deduct additional knowledge
  • Inference techniques

What are inference techniques

  • Deductive reasoning
  • Inductive reasoning
  • Abductive reasoning
  • Monotonoc reasoning
  • Non-monotonic reasoning
  • Forward chaining
  • Backward chaining

What is knowledge acquisition

  • Phase where knowledge engineer elicits knowledge from expert and models the knowledge in the knowledge base
  • Don't transform the knowledge
  • Learning

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