org.apache.hadoop.tools.rumen

类 CDFRandomGenerator

java.lang.Object

org.apache.hadoop.tools.rumen.CDFRandomGenerator

直接已知子类:

CDFPiecewiseLinearRandomGenerator

public abstract class CDFRandomGenerator
extends Object

An instance of this class generates random values that confirm to the embedded LoggedDiscreteCDF . The discrete CDF is a pointwise approximation of the "real" CDF. We therefore have a choice of interpolation rules. A concrete subclass of this abstract class will implement valueAt(double) using a class-dependent interpolation rule.

方法概要

方法

限定符和类型	方法和说明
protected int	floorIndex(double probe)
protected long	getDatumAt(int index)
protected double	getRankingAt(int index)
protected void	initializeTables(LoggedDiscreteCDF cdf)
long	randomValue()
abstract long	valueAt(double probability)

从类继承的方法 java.lang.Object

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

方法详细资料

initializeTables

protected final void initializeTables(LoggedDiscreteCDF cdf)

floorIndex

protected int floorIndex(double probe)

getRankingAt

protected double getRankingAt(int index)

getDatumAt

protected long getDatumAt(int index)

randomValue

public long randomValue()

valueAt

public abstract long valueAt(double probability)