weka.core
Class AttributeStats

java.lang.Object
  weka.core.AttributeStats

All Implemented Interfaces:

java.io.Serializable

public class AttributeStats

extends java.lang.Object

implements java.io.Serializable

A Utility class that contains summary information on an the values that appear in a dataset for a particular attribute.

Version:

$Revision: 1.7 $

Author:

Len Trigg

See Also:

Serialized Form

Field Summary

int	distinctCount The number of distinct values
int	intCount The number of int-like values
int	missingCount The number of missing values
int[]	nominalCounts Counts of each nominal value
Stats	numericStats Stats on numeric value distributions
int	realCount The number of real-like values (i.e. have a fractional part)
int	totalCount The total number of values (i.e. number of instances)
int	uniqueCount The number of values that only appear once

Constructor Summary

AttributeStats()

Method Summary

protected void	addDistinct(double value, int count) Updates the counters for one more observed distinct value.
java.lang.String	toString() Returns a human readable representation of this AttributeStats instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

intCount

public int intCount

The number of int-like values

realCount

public int realCount

The number of real-like values (i.e. have a fractional part)

missingCount

public int missingCount

The number of missing values

distinctCount

public int distinctCount

The number of distinct values

uniqueCount

public int uniqueCount

The number of values that only appear once

totalCount

public int totalCount

The total number of values (i.e. number of instances)

numericStats

public Stats numericStats

Stats on numeric value distributions

nominalCounts

public int[] nominalCounts

Counts of each nominal value

Constructor Detail

AttributeStats

public AttributeStats()

Method Detail

addDistinct

protected void addDistinct(double value,
                           int count)

Updates the counters for one more observed distinct value.

Parameters:

value - the value that has just been seen

count - the number of times the value appeared

toString

public java.lang.String toString()

Returns a human readable representation of this AttributeStats instance.

Returns:

a String represtinging these AttributeStats.