ai-lect3 - 1 Last time Summary • Definition of AI •...

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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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This note was uploaded on 01/20/2011 for the course CS 6810 taught by Professor Hecker during the Spring '10 term at CSU East Bay.

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ai-lect3 - 1 Last time Summary • Definition of AI •...

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