WA5 - Timothy Martens ARTIFICIAL INTELLIGENCE COS 451 OL009...

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Timothy Martens ARTIFICIAL INTELLIGENCE COS 451 OL009 September 2008 1. Complete the following problems, which can be found in section 9.8 (Review Questions), page 261. a. Explain why an expert system are so called. Because they are “expert” in a particular area, it tries to use the knowledge of an expert (or multiple experts) to come up with “expert decisions.” b. Explain the difference between forward chaining and backward chaining. Explain the advantages and disadvantages of each method. Forward chaining uses rules starting in the front and applies given data and continues with the rules. Backward chaining starts with what it thinks is the solutions and tries to work logically backward. Backward tracking is good in a situation where the user may be quiet sure that they know the solution but aren’t’ quite sure. Forward chaining is applied when facts can be applied to reach a conclusion that you have no idea what the solution could be. c. What is the purpose of Meta rules? Would an expert system have any advantages if it knew the difference between meta rules and normal rules? Meta rules are rules that are designed to help avoid conflict in regular rules.
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This note was uploaded on 12/30/2009 for the course COS 451 taught by Professor Jasonlitz during the Summer '09 term at Thomas Edison State.

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WA5 - Timothy Martens ARTIFICIAL INTELLIGENCE COS 451 OL009...

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