lecture4 - Articial Intelligence Uninformed Search Nilsson...

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Uninformed Search; page 1 of 26 Artificial Intelligence Uninformed Search Nilsson - Chapters 7 and 8 Russell and Norvig - Chapter 3
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Uninformed Search; page 2 of 26 Environment act sense Performance Measure Software System = Agent agents
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Uninformed Search; page 3 of 26 percepts actions table sequence of percepts and actions Gold Standard - huge table - inflexible agent architectures
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Uninformed Search; page 4 of 26 percepts actions state program percepts actions program percepts actions state program goal state (or performance measure) possible agent architectures (agent = architecture + program) (search, planning) reflex agent (“reactive planning”) planning agent example: giving change
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Uninformed Search; page 5 of 26 N S W E E E E W W W N S N S current state goal state percepts actions state program goal state (or performance measure) (search, planning) state space state spaces
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Uninformed Search; page 6 of 26 examples of state spaces eight puzzle 1 3 2 5 6 7 8 4 states? actions? 1 2 3 4 5 7 8 6
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Uninformed Search; page 7 of 26 examples of state spaces missionaries and cannibals Three missionaries and three cannibals are on one side of a river, along with a boat that can hold one or two people. Find the quickest way to get everyone to the other side, without ever leaving a group of missionaries in one place outnumbered by the cannibals in that place.
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