pl.edu.agh.age.compute.ea.distribution

Class CumulativeDistribution

java.lang.Object

pl.edu.agh.age.compute.ea.distribution.CumulativeDistribution

public final class CumulativeDistribution
extends java.lang.Object

A cumulative distribution is a sequence of monotonic numbers in the range (0,..,1]

Field Summary

Fields

Modifier and Type	Field and Description
private double[]	data

Constructor Summary

Constructors

Constructor and Description
CumulativeDistribution(double[] data) Creates a CumulativeDistribution, using the provided data as internal representation.

Method Summary

Modifier and Type	Method and Description
int	getValueFor(double argument) Looks up this cumulative distribution for a given argument.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

data

private final double[] data

Constructor Detail

CumulativeDistribution

public CumulativeDistribution(double[] data)

Creates a CumulativeDistribution, using the provided data as internal representation.

The assumptions on this data are that: - It is monotonic: data[i+1] >= data[i] - It is included in the range (0,1]: data[0] >= 0.0, data[data.length] == 1.0

These assumptions are not checked, for efficiency purposes, but failing to meet them might result in undefined behavior.

Parameters:

data - The distribution data, should be a monotonic range included in (0,1]

Method Detail

getValueFor

public int getValueFor(double argument)

Looks up this cumulative distribution for a given argument. This method returns the index of the first element which is equal or greater than the given argument.

The assumption on this argument is that it is included in the distribution range, that is [0,1]. (It can be 0, as we are looking for greater or equal elements). This assumption is not checked, for efficiency purposes, but failing to meet it might result in undefined behavior.

Parameters:

argument - The argument, should be contained in the range [0,1].

Returns:

The index of the first element equal or greater than the argument.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object