类 EntropyBasedSplitCrit
java.lang.Object
weka.classifiers.trees.j48.SplitCriterion
weka.classifiers.trees.j48.EntropyBasedSplitCrit
- 所有已实现的接口:
Serializable
,RevisionHandler
"Abstract" class for computing splitting criteria
based on the entropy of a class distribution.
- 版本:
- $Revision: 1.8 $
- 作者:
- Eibe Frank (eibe@cs.waikato.ac.nz)
- 另请参阅:
-
构造器概要
构造器 -
方法概要
修饰符和类型方法说明final double
logFunc
(double num) Help method for computing entropy.final double
newEnt
(Distribution bags) Computes entropy of distribution after splitting.final double
oldEnt
(Distribution bags) Computes entropy of distribution before splitting.final double
splitEnt
(Distribution bags) Computes entropy after splitting without considering the class values.从类继承的方法 weka.classifiers.trees.j48.SplitCriterion
splitCritValue, splitCritValue, splitCritValue, splitCritValue
从接口继承的方法 weka.core.RevisionHandler
getRevision
-
构造器详细资料
-
EntropyBasedSplitCrit
public EntropyBasedSplitCrit()
-
-
方法详细资料
-
logFunc
public final double logFunc(double num) Help method for computing entropy. -
oldEnt
Computes entropy of distribution before splitting. -
newEnt
Computes entropy of distribution after splitting. -
splitEnt
Computes entropy after splitting without considering the class values.
-