edu.upc.dama.dex.core
Class Graph.AttributeStats

java.lang.Object
  edu.upc.dama.dex.core.Graph.AttributeStats

Enclosing class:

Graph

public static class Graph.AttributeStats
extends java.lang.Object

Attribute statistics.

Field Summary

long	distinct Number of distinct values.
Value	max Maximum existing value.
double	mean Mean or average Sum of all Values divided by the number of observations.
double	median Median Middle value that separates the higher half from the lower.
Value	min Minimum existing value.
Value	mode Most frequent Value.
long	modeCount Number of objects with a Value equal to Graph.AttributeStats.mode, that is the most frequent Value.
long	nil Number of objects without a Value for the attribute.
long	total Number of objects with a Value for the attribute.
double	variance Variance.

Constructor Summary

Graph.AttributeStats()

Method Summary

java.lang.String

toString()

Methods inherited from class java.lang.Object

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

Field Detail

total

public long total

Number of objects with a Value for the attribute.

nil

public long nil

Number of objects without a Value for the attribute.

distinct

public long distinct

Number of distinct values.

min

public Value min

Minimum existing value.

max

public Value max

Maximum existing value.

mode

public Value mode

Most frequent Value.

modeCount

public long modeCount

Number of objects with a Value equal to Graph.AttributeStats.mode, that is the most frequent Value.

mean

public double mean

Mean or average Sum of all Values divided by the number of observations. It is computed just for numerical attributes.

variance

public double variance

Variance. It is computed just for numerical attributes.

median

public double median

Median Middle value that separates the higher half from the lower. If a < b < c, then the median of the list {a, b, c} is b, and if a < b < c < d, then the median of the list {a, b, c, d} is the mean of b and c, i.e. it is (b + c)/2 It is computed just for numerical attributes.

Constructor Detail

Graph.AttributeStats

public Graph.AttributeStats()

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object