Due Monday Read chapter 2 Homework: –Chapter 1, exercises 10-13 –Answer each in 100 words or less. Send to from your preferred.

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Presentation transcript:

Due Monday Read chapter 2 Homework: –Chapter 1, exercises –Answer each in 100 words or less. Send to from your preferred Student information sheet

What Do You Know? Examples of artificial intelligence in your life? Other examples that you’re aware of? Can you name any of the areas of AI?

Foundations of AI What disciplines have contributed to the development of artificial intelligence as a field?

Foundations Philosophy Mathematics Economics Neuroscience Psychology Computer engineering Control theory and cybernetics Linguistics

The Birth of AI McCulloch and Pitts(1943) theory of neurons as competing circuits followed up by Hebb’s work on learning Work in early 1950’s on game playing by Turing and Shannon and Minsky’s work on neural networks Dartmouth Conference –Organizer: John McCarthy –Attendees: Minsky, Allen Newell, Herb Simon –Coined term artificial intelligence

Early Years What was the mood of the early years?

Early Years Development of the General Problem Solver by Newell and Simon in 1960s. Arthur Samuel’s work on checkers in 1950s. Frank Rosenblatt’s Perceptron (1962) for training simple networks

At MIT Marvin Minsky and John McCarthy Development of LISP SAINT: solved freshman calculus problems ANALOGY: solved IQ test analogy problems SIR: answered simple questions in English STUDENT: solved algebra story problems SHRDLU: obeyed simple English commands in the blocks world

Early Limitations Solved toy problems in ways that did not scale to realistic problems –Knowledge representation issues –Combinatorial explosion Limitations of the perceptron were demonstrated by Minsky and Papert (1969)

Knowledge Is Power: The Rise of Expert Systems Discovery that detailed knowledge of the specific domain can help control search and lead to expert level performance for restricted tasks First expert system was DENDRAL. It interpreted mass spectogram data to determine molecular structure. Developed by Buchanan, Feigenbaum and Lederberg (1969).

Other Early Expert Systems MYCIN: Diagnosis of bacterial infection (1975) PROSPECTOR: Found molybdenum deposit based on geological data (1979) R1: Configured computers for DEC (1982)

AI Becomes an Industry Numerous expert systems developed in 80s Estimated $2 billion by 1988 Japanese Fifth Generation project started in MCC founded in 1984 to counter Japanese. Limitations become apparent: prediction of AI Winter –Brittleness and domain specificity –Knowledge acquisition bottleneck

Rebirth of Neural Networks New algorithms (re)discovered for training more complex networks (1986) Cognitive modeling Industrial applications: –Character and hand-writing recognition –Speech recognition –Processing credit card applications –Financial prediction –Chemical process control

AI Becomes a Science Empirical experiments the norm Theoretical underpinnings are important The “See what I can do” approach is no longer an acceptable method for doing research Some movement toward learning/statistical methods.

Rise of Intelligent Agents Why?

Popular Tasks of Today Data mining Intelligent agents and internet applications –softbots –believable agents –intelligent information access Scheduling applications Configuration applications

State of the Art Deep Blue beats Kasparov NASA’s Remote Agent program controls a spacecraft autonomously High accuracy continuous speech recognition with fairly large vocabularies Usable natural language interface to air travel system No Hands Across America: Automated vehicle drives cross-country on freeways

State of the Art Medical diagnosis in specialized fields is sometimes assisted by AI programs AI logistics programs were critically important in the Gulf War. PROVERB can solve crossword puzzles faster than most humans.

Views of AI Weak vs. strong Scruffy vs. neat Engineering vs. cognitive