de.lmu.ifi.dbs.elki.datasource.filter.selection

Class RandomSamplingStreamFilter

java.lang.Object

de.lmu.ifi.dbs.elki.datasource.filter.AbstractStreamFilter

de.lmu.ifi.dbs.elki.datasource.filter.selection.RandomSamplingStreamFilter

All Implemented Interfaces:

BundleStreamSource, ObjectFilter, StreamFilter

@Alias(value="de.lmu.ifi.dbs.elki.datasource.filter.RandomSamplingStreamFilter")
public class RandomSamplingStreamFilter
extends AbstractStreamFilter

Subsampling stream filter.

Since:

0.5.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RandomSamplingStreamFilter.Parameterizer Parameterization class

Nested classes/interfaces inherited from interface de.lmu.ifi.dbs.elki.datasource.bundle.BundleStreamSource

BundleStreamSource.Event

Field Summary

Fields

Modifier and Type	Field and Description
protected double	prob Probability
protected Random	random Random generator

Fields inherited from class de.lmu.ifi.dbs.elki.datasource.filter.AbstractStreamFilter

source

Constructor Summary

Constructors

Constructor and Description
RandomSamplingStreamFilter(double prob, RandomFactory rnd) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
Object	data(int rnum) Access a particular object and representation.
BundleMeta	getMeta() Get the current meta data.
BundleStreamSource.Event	nextEvent() Get the next event

Methods inherited from class de.lmu.ifi.dbs.elki.datasource.filter.AbstractStreamFilter

asMultipleObjectsBundle, assignDBID, filter, hasDBIDs, init

Methods inherited from class java.lang.Object

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

Field Detail

prob

protected double prob

Probability

random

protected Random random

Random generator

Constructor Detail

RandomSamplingStreamFilter

public RandomSamplingStreamFilter(double prob,
                          RandomFactory rnd)

Constructor.

Parameters:

prob - Probability

rnd - Random generator

Method Detail

getMeta

public BundleMeta getMeta()

Description copied from interface: BundleStreamSource

Get the current meta data.

Returns:

Metadata

data

public Object data(int rnum)

Description copied from interface: BundleStreamSource

Access a particular object and representation.

Parameters:

rnum - Representation number

Returns:

Contained data

nextEvent

public BundleStreamSource.Event nextEvent()

Description copied from interface: BundleStreamSource

Get the next event

Returns:

Event type