water.util

Class MathUtils.BasicStats

java.lang.Object

water.Iced

water.util.MathUtils.BasicStats

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable

Enclosing class:

MathUtils

public static final class MathUtils.BasicStats
extends Iced

Wrapper around weighted paralell basic stats computation (mean, variance)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
long[]	_nzCnt
double	_wsum

Constructor Summary

Constructors

Constructor and Description
BasicStats(int n)

Method Summary

Modifier and Type	Method and Description
void	add(double[] x, double w)
void	add(double x, double w, int i)
void	fillSparseNAs(int i)
void	fillSparseZeros(int i)
boolean	isSparse(int col)
double[]	mean()
double	mean(int i)
long	nobs()
void	reduce(MathUtils.BasicStats bs)
void	setNobs(long nobs, double wsum)
double[]	sigma()
double	sigma(int i)
double[]	variance()
double	variance(int i)

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

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

Field Detail

_wsum

public double _wsum

_nzCnt

public long[] _nzCnt

Constructor Detail

BasicStats

public BasicStats(int n)

Method Detail

add

public void add(double x,
                double w,
                int i)

add

public void add(double[] x,
                double w)

setNobs

public void setNobs(long nobs,
                    double wsum)

fillSparseZeros

public void fillSparseZeros(int i)

fillSparseNAs

public void fillSparseNAs(int i)

reduce

public void reduce(MathUtils.BasicStats bs)

variance

public double variance(int i)

variance

public double[] variance()

sigma

public double sigma(int i)

sigma

public double[] sigma()

mean

public double[] mean()

mean

public double mean(int i)

nobs

public long nobs()

isSparse

public boolean isSparse(int col)