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rulesSept21

# rulesSept21 - Problem-solving with rules Tuesday September...

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Problem-solving with rules Tuesday, September 21 st 2010 Tuesday, September 21, 2010

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Selection task If a card has an A on one side, then it has a 4 on the other. A B 4 7 invokes M.P. invokes M.T. Review P QP Modus Ponens (M.P.) Q P Q ¬ Q Modus Tolens (M.T.) ¬ P Tuesday, September 21, 2010
Selection task If a card has an A on one side, then it has a 4 on the other. A B 4 7 invokes M.P. invokes M.T. Review P QP Modus Ponens (M.P.) Q P Q ¬ Q Modus Tolens (M.T.) ¬ P Tuesday, September 21, 2010

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Selection task If a card has an A on one side, then it has a 4 on the other. A B 4 7 invokes M.P. invokes M.T. Review P QP Modus Ponens (M.P.) Q P Q ¬ Q Modus Tolens (M.T.) ¬ P IF you’re thinking of milk THEN realize that milk is white Tuesday, September 21, 2010
Selection task If a card has an A on one side, then it has a 4 on the other. A B 4 7 invokes M.P. invokes M.T. Review P QP Modus Ponens (M.P.) Q P Q ¬ Q Modus Tolens (M.T.) ¬ P IF you’re thinking of milk THEN realize that milk is white IF you’re thinking of air THEN realize that air is a Fuid Tuesday, September 21, 2010

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Tuesday, September 21, 2010
1. Goal-directed rules IF your goal is to travel you have bus fare THEN you can take the bus Tuesday, September 21, 2010

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1. Goal-directed rules IF your goal is to travel you have bus fare THEN you can take the bus http://www.studentagencies.com/info.php?page=short_line Short Line Bus Tickets TGIF Discounted Fares for Students Fall Break to NY, NJ & LI Tuesday, September 21, 2010
2. Default rules X (student( X ) overworked( X )) Tuesday, September 21, 2010

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2. Default rules X (student( X ) overworked( X )) Tuesday, September 21, 2010
2. Default rules X (student( X ) overworked( X )) Tuesday, September 21, 2010

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2. Default rules X (student( X ) overworked( X )) a) IF X is a student THEN X is overworked Tuesday, September 21, 2010
2. Default rules X (student( X ) overworked( X )) a) IF X is a student THEN X is overworked b) IF X is a student X is taking only easy courses THEN X is not overworked more specifc b) overrides a) Tuesday, September 21, 2010

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Well-defned, knowledge-lean problems Tuesday, September 21, 2010
Well-defned, knowledge-lean problems Tuesday, September 21, 2010

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Today’s agenda 1. exemplify problem-solving Missionaries & Cannibals 2. introduce the problem behavior graph (PBG) 3. show how production systems are a theory of the PBG Tuesday, September 21, 2010
Today’s agenda 1. exemplify problem-solving Missionaries & Cannibals 2. introduce the problem behavior graph (PBG) 3. show how production systems are a theory of the PBG Tuesday, September 21, 2010

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Three missionaries and three cannibals seek to cross a river from the left bank to the right bank. A boat is available which will hold two people and which can be navigated by any combination of missionaries and cannibals involving not more than two and not less than one person. If the missionaries on either bank of the river are outnumbered at any time by cannibals, the cannibals will indulge their anthropophagic tendencies and eat the missionaries. When the boat is moored at a bank, its passengers are regarded as being on the bank.
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rulesSept21 - Problem-solving with rules Tuesday September...

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