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Class weka.classifiers.trees.j48.Stats 

java.lang.Object
    |
    +----weka.classifiers.trees.j48.Stats
public class Stats
extends java.lang.Object
Class implementing a statistical routine needed by J48 to compute its error estimate.

Version:
$Revision: 1.7 $
Author:
Eibe Frank (eibe@cs.waikato.ac.nz)

Constructor Index

o Stats()
 

Method Index

o addErrs(double, double, float)
Computes estimated extra error for given total number of instances and error using normal approximation to binomial distribution (and continuity correction).

Constructor Detail

o Stats
public Stats()

Method Detail

o addErrs
public static double addErrs(double N,
                             double e,
                             float CF)
          Computes estimated extra error for given total number of instances and error using normal approximation to binomial distribution (and continuity correction).
Parameters:
N - number of instances
e - observed error
CF - confidence value 
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