Lecture-2

Lecture-2 - Artificial Intelligence CS 165A 165A Thursday...

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Artificial Intelligence S 165A CS 165A Thursday, Jan 06, 2011 inish AI overview Finish AI overview Some material from Ch. 26 Intelligent agents (Ch. 2) 1
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Notes • Lecture notes – Username: cs165a – Password: winter2011 2
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Review • What is Artificial Intelligence? hat are some notable AI systems? What are some notable AI systems? • What kinds of things do AI systems/programs do? hat are the goals of AI? What are the goals of AI? • What areas are foundational to AI? xactly when is the survey due? Exactly when is the survey due? • How much is taken off for an assignment that is one day late? 20% 3
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AI = “A” + “I” • Artificial – As in “artificial flowers” or “artificial light”? • Intelligence – What is intelligence? h it t i d l k l d The capacity to acquire and apply knowledge The faculty of thought and reason Symbol manipulation, grounded in perception of the world The computational part of the ability to achieve goals in the world – What makes someone more/less intelligent than another? – Are {monkeys, ants, trees, babies, chess programs} intelligent? How can we know if a machine is intelligent? Turing Test (Alan Turing, 1950), a.k.a. The Imitation Game 4
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The Turing Test Questions Responses I H? / C? “I believe that at the end of the century the use of words and general educated opinion will have altered so much that one will be able to speak of machines thinking without expecting to be contradicted.” - Turing 1950
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Objections to “Thinking machines” (countered by Turing) Theological objection “Heads in the sand” objection Mathematical objection The argument from consciousness Arguments from various disabilities – “Be kind, resourceful, beautiful, friendly, have initiative, have a sense of humour, tell right from wrong, make mistakes, fall in love, enjoy strawberries and cream, make some one fall in love with it, learn from experience, use words properly, be the subject of its own thought, have as much diversity of behaviour as a man, do something really new.” ady Lovelace’s objection Lady Lovelace s objection Argument from continuity in the nervous system The argument from informality of behavior – Qualification problem The argument from ESP 6
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• “Strong AI” – Makes the bold claim that computers can be made to think on a level (at least) equal to humans – One version: The Physical Symbol System Hypothesis physical symbol system has the necessary and sufficient A physical symbol system has the necessary and sufficient means for general intelligent action Intelligence = symbol manipulation (perhaps grounded in erception and action) perception and action) • “Weak AI” – Some “thinking-like” features can be added to computers to make them more useful tools – Examples: expert systems, speech recognition, natural language understanding…. 7
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This note was uploaded on 02/22/2011 for the course CS 165A taught by Professor Su during the Spring '11 term at UCSB.

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Lecture-2 - Artificial Intelligence CS 165A 165A Thursday...

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