smile.sampling

Class Bagging

java.lang.Object

smile.sampling.Bagging

public class Bagging
extends java.lang.Object

Bagging (Bootstrap aggregating) is a way to improve the classification by combining classifications of randomly generated training sets.

Field Summary

Fields

Modifier and Type	Field and Description
int[]	samples The samples.

Constructor Summary

Constructors

Constructor and Description
Bagging(int[] samples) Constructor.

Method Summary

Modifier and Type	Method and Description
static Bagging	random(int n, double subsample) Random sampling.
static Bagging	strateify(int[] strata, double subsample) Stratified sampling.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

samples

public final int[] samples

The samples.

Constructor Detail

Bagging

public Bagging(int[] samples)

Constructor.

Parameters:

samples - the samples.

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

random

public static Bagging random(int n,
                             double subsample)

Random sampling.

Parameters:

n - the size of samples.

subsample - sampling rate. Draw samples with replacement if it is 1.0.

strateify

public static Bagging strateify(int[] strata,
                                double subsample)

Stratified sampling.

Parameters:

strata - strata labels.

subsample - sampling rate. Draw samples with replacement if it is 1.0.