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???? ?? (Decision Tree)

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Title: 1. Author: Park, Chang-Hyeon Last modified by: Created Date: 9/2/1999 4:22:37 AM Document presentation format: Other titles – PowerPoint PPT presentation

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Title: ???? ?? (Decision Tree)


1
???? ?? (Decision Tree)
  • ???? ??
  • A method for approximating discrete-valued target
    functions.
  • Search a completely expressive hypothesis space
  • Disjunction of conjunctions of constraints on the
    attribute values of instances
  • ?? ??? ?? ? ??? ? ?? ??? ??? ?
  • ????(entropy), ?? ??(information gain)
  • ??? ??
  • ?? ???? ??(error)? ?? ??
  • ?? ??(attribute) ?? ?? ???? ?? ??

2
  • ?? ??? ??

3
  • ??? ?? ?? (ID3? ??)

4
  • ????

5
  • ?? ?? (Information Gain)
  • ?? A? ?? ??? ??(partitioning)????, ???? ????? ???
  • ?? A? ?? ???? ???? ????? ??

6
  • ?? ?

7
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8
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9
?? ?? (Inductive Bias)
ID3 C-E
?? ?? ?? ?? ?? ?? ?? ??? ?? ??? ?? ??? ??? ??? ?? ??? ???
?? ?? ?? ?? ?? ?? ?? ?? ??
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