Lecture02HO - CS440/ECE448 Intro to Articial Intelligence...

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Lecture 2: Intelligent Agents Prof. Julia Hockenmaier [email protected] http://cs.illinois.edu/fa11/cs440 CS440/ECE448: Intro to ArtiFcial Intelligence Key concepts from last lecture Last time ʼ s key concepts Content-wise: What is ArtiFcial Intelligence? Why is it difFcult? What is reasoning? Why does it require models? Class admin: Can you log onto your Compass site? Did you do the survey on Compass? Do you have access to the textbook? Compass survey Java experience (26% no): TA ofFce hours next week will offer Java tutorials Parisa ʼ s OH will be 3pm-5pm on Monday. Yonatan ʼ s OH will be 11am-1pm on Wednesday 4 CS440/ECE448: Intro AI
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Compass survey What is AI? How to make something behave like a human How to make something intelligently solve problems/reason. Second answer is correct, frst is not. 5 CS440/ECE448: Intro AI Today ʼ s lecture ʼ s key questions How can we design an “intelligent” agent to solve a specifc task in a particular environment ? What is intelligence ? ʼ s key concepts Agents: DiFFerent kinds oF agents The structure and components oF agents Describing and evaluating agents: PerFormance measures Task environments Rationality: What makes an agent intelligent?
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The vacuum world The environment: Location A and location B Either can be clean or dirty The agent: a vacuum cleaner The task: clean both A and B 9 CS440/ECE448: Intro AI AB The face recognition world 10 CS440/ECE448: Intro AI Photo: Jason Sewell , on fickr.com The environment: a photograph The agent: a program The task: Fnd ±aces, identi±y them The chess world 11 CS440/ECE448: Intro AI 1. e4 e5 2. Qh5 Nc6 3. Bc4 N±6 4. Qx±7# 1–0 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! The environment: a chess game The agent: a game The task: play chess, win match Agents 12 CS440/ECE448: Intro AI
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Agents operate in an environment 13 CS440/ECE448: Intro AI Environment Agent Sensors Actuators Agent Program Percepts Actions physical architecture Defnitions….
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Lecture02HO - CS440/ECE448 Intro to Articial Intelligence...

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