ai-lect3 - 1 Last time: Summary Definition of AI? Turing...

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Unformatted text preview: 1 Last time: Summary Definition of AI? Turing Test? Intelligent Agents: Anything that can be viewed as perceiving its environment through sensors and acting upon that environment through its effectors to maximize progress towards its goals . PAGE (Percepts, Actions, Goals, Environment) Described as a Perception (sequence) to Action Mapping: f : P * A Using look-up-table, closed form, etc. Agent Types: Reflex, state-based, goal-based, utility-based Rational Action: The action that maximizes the expected value of the performance measure given the percept sequence to date 2 Outline: Problem solving and search Introduction to Problem Solving Complexity Uninformed search Problem formulation Search strategies: depth-first, breadth-first Informed search Search strategies: best-first, A* Heuristic functions 3 Example: Measuring problem! Problem: Using these three buckets, measure 7 liters of water. 3 l 5 l 9 l 4 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 5 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 6 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 7 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 8 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 9 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 10 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 11 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 12 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 13 Example: Measuring problem! (one possible) Solution: a b c start 3 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 14 Example: Measuring problem! Another Solution: a b c start 5 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 15 Example: Measuring problem! Another Solution: a b c start 5 3 2 3 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 16 Example: Measuring problem! Another Solution: a b c start 5 3 2 3 2 3 3 6 3 6 3 6 3 3 6 1 5 6 5 7 goal 3 l 5 l 9 l a b c 17 Example: Measuring problem!...
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ai-lect3 - 1 Last time: Summary Definition of AI? Turing...

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