stream.generator

Class ColtGaussianStream

java.lang.Object

stream.io.AbstractStream

stream.generator.ColtGaussianStream

All Implemented Interfaces:

Source, Stream

public class ColtGaussianStream
extends AbstractStream

Author:

Hendrik Blom, chris

Field Summary

Fields

Modifier and Type	Field and Description
protected Double[]	attributes
protected Map<String,ColtGaussian>	generators
(package private) static org.slf4j.Logger	log
protected Long	seed
protected cern.jet.random.engine.MersenneTwister64	seedGenerator
protected Map<String,Class<?>>	types

Fields inherited from class stream.io.AbstractStream

closed, count, id, in, limit, prefix, seqId, sequenceKey, url

Fields inherited from interface stream.io.Stream

SOURCE_KEY

Constructor Summary

Constructors

Constructor and Description
ColtGaussianStream() Create a new Gaussian stream with the given number of classes.

Method Summary

Modifier and Type	Method and Description
void	close()
Data	generate()
String	getDescription()
Long	getNextSeed()
Long	getSeed()
void	init()
Data	readNext()
void	setAttributes(Double[] attributes)
void	setGenerator(String attribute, ColtGaussian dist)
void	setSeed(Long seed)

Methods inherited from class stream.io.AbstractStream

getId, getInputStream, getLimit, getPrefix, getSequenceKey, getUrl, read, setId, setLimit, setPrefix, setSequenceKey, setUrl

Methods inherited from class java.lang.Object

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

Field Detail

log

static org.slf4j.Logger log

generators

protected Map<String,ColtGaussian> generators

types

protected Map<String,Class<?>> types

seed

protected Long seed

seedGenerator

protected cern.jet.random.engine.MersenneTwister64 seedGenerator

attributes

protected Double[] attributes

Constructor Detail

ColtGaussianStream

public ColtGaussianStream()

Create a new Gaussian stream with the given number of classes. The map contains a mapping of attribute-names to double-pairs each of which describes the mean/variance of a Gaussian distribution.

Parameters:

numberOfClasses - The number of classes.

attributeDistributions - The parameterization of the attribute distributions.

Method Detail

init

public void init()
          throws Exception

Specified by:

init in interface Source

Overrides:

init in class AbstractStream

Throws:

Exception

getSeed

public Long getSeed()

Returns:

the seed

setSeed

public void setSeed(Long seed)

Parameters:

seed - the seed to set

generate

public Data generate()

setGenerator

public void setGenerator(String attribute,
                         ColtGaussian dist)

setAttributes

public void setAttributes(Double[] attributes)

readNext

public Data readNext()
              throws Exception

Specified by:

readNext in class AbstractStream

Throws:

Exception

See Also:

Source.read()

getDescription

public String getDescription()

getNextSeed

public Long getNextSeed()

close

public void close()

Specified by:

close in interface Source

Overrides:

close in class AbstractStream