TAMU CSCE 420 - chapter01 (27 pages)

Previewing pages 1, 2, 3, 25, 26, 27 of 27 page document View the full content.
View Full Document

chapter01



Previewing pages 1, 2, 3, 25, 26, 27 of actual document.

View the full content.
View Full Document
View Full Document

chapter01

28 views


Pages:
27
School:
Texas A&M University
Course:
Csce 420 - Artificial Intelligence
Artificial Intelligence Documents

Unformatted text preview:

Artificial Intelligence Chapter 1 Chapter 1 1 Outline What is AI A brief history The state of the art Chapter 1 2 What is AI Systems that think like humans Systems that think rationally Systems that act like humans Systems that act rationally Chapter 1 3 Acting humanly The Turing test Turing 1950 Computing machinery and intelligence Can machines think Can machines behave intelligently Operational test for intelligent behavior the Imitation Game HUMAN HUMAN INTERROGATOR AI SYSTEM Predicted that by 2000 a machine might have a 30 chance of fooling a lay person for 5 minutes Anticipated all major arguments against AI in following 50 years Suggested major components of AI knowledge reasoning language understanding learning Problem Turing test is not reproducible constructive or amenable to mathematical analysis Chapter 1 4 Thinking humanly Cognitive Science 1960s cognitive revolution information processing psychology replaced prevailing orthodoxy of behaviorism Requires scientific theories of internal activities of the brain What level of abstraction Knowledge or circuits How to validate Requires 1 Predicting and testing behavior of human subjects top down or 2 Direct identification from neurological data bottom up Both approaches roughly Cognitive Science and Cognitive Neuroscience are now distinct from AI Both share with AI the following characteristic the available theories do not explain or engender anything resembling human level general intelligence Hence all three fields share one principal direction Chapter 1 5 Thinking rationally Laws of Thought Normative or prescriptive rather than descriptive Aristotle what are correct arguments thought processes Several Greek schools developed various forms of logic notation and rules of derivation for thoughts may or may not have proceeded to the idea of mechanization Direct line through mathematics and philosophy to modern AI Problems 1 Not all intelligent behavior is mediated by logical deliberation 2 What is the purpose of thinking What thoughts should I have out of all the thoughts logical or otherwise that I could have Chapter 1 6 Acting rationally Rational behavior doing the right thing The right thing that which is expected to maximize goal achievement given the available information Doesn t necessarily involve thinking e g blinking reflex but thinking should be in the service of rational action Aristotle Nicomachean Ethics Every art and every inquiry and similarly every action and pursuit is thought to aim at some good Chapter 1 7 Rational agents An agent is an entity that perceives and acts This course is about designing rational agents Abstractly an agent is a function from percept histories to actions f P A For any given class of environments and tasks we seek the agent or class of agents with the best performance Caveat computational limitations make perfect rationality unachievable design best program for given machine resources Chapter 1 8 AI prehistory Philosophy logic methods of reasoning



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view chapter01 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view chapter01 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?