类 Impurity
java.lang.Object
weka.classifiers.trees.m5.Impurity
- 所有已实现的接口:
RevisionHandler
Class for handling the impurity values when spliting the instances
- 版本:
- $Revision: 1.8 $
- 作者:
- Yong Wang (yongwang@cs.waikato.ac.nz)
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构造器概要
构造器 -
方法概要
修饰符和类型方法说明Returns the revision string.final void
incremental
(double value, int type) Incrementally computes the impurirty valuesfinal String
toString()
Converts an Impurity object to a string
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构造器详细资料
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Impurity
Constructs an Impurity object containing the impurity values of partitioning the instances using an attribute- 参数:
partition
- the index of the last instance in the left subsetattribute
- the attribute used in partitioninginst
- instancesk
- the order of the impurity; =1, the variance; =2, the stardard deviation; =k, the k-th order root of the variance
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方法详细资料
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toString
Converts an Impurity object to a string -
incremental
public final void incremental(double value, int type) Incrementally computes the impurirty values- 参数:
value
- the incremental valuetype
- if type=1, value will be added to the left subset; type=-1, to the right subset; type=0, initializes
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getRevision
Returns the revision string.- 指定者:
getRevision
在接口中RevisionHandler
- 返回:
- the revision
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