Search in Partially Observable Environments - Yousef's Notes
Search in Partially Observable Environments

Search in Partially Observable Environments

Problems where there is limited sensing of the environment:

  • a sliding tile puzzle with just one corner visible
  • a local sensing vacuum For every action: RESULTS(b, a) = {b_0: b_0 = UPDATE(PREDICT(b,a), o) and o belongs to POSSIBLE-PERCEPTS(PREDICT(b,a))}

Transition in local-sensing vacuum world:

  • Action results in two belief states
  • Sensing narrows the possible states
    Solution will also use Conditional Plans

[Suck, Right, if Rstate = {6} then Suck else []]

Agents in partially observable environments:

  • Solution will be a conditional plan (not a path or sequence)
  • The agent will maintain a Belief State b' = UPDATE(PREDICT(b,a),o)
    • Monitoring, filtering or state estimation

Test yourself on QuizBuilder.ai