stream.generator

Class GaussianStream

java.lang.Object

stream.io.AbstractStream

stream.generator.GaussianStream

All Implemented Interfaces:

Source, Stream

public class GaussianStream
extends AbstractStream

Author:

chris

Field Summary

Fields

Modifier and Type	Field and Description
(package private) Double[]	attributes
(package private) Long	count
(package private) Map<String,Gaussian>	generators
(package private) static org.slf4j.Logger	log
(package private) Random	random
(package private) Long	seed
(package private) Random	seedGenerator
(package private) Map<String,Class<?>>	types

Fields inherited from class stream.io.AbstractStream

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

Fields inherited from interface stream.io.Stream

SOURCE_KEY

Constructor Summary

Constructors

Constructor and Description
GaussianStream() 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, Gaussian 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

Map<String,Gaussian> generators

types

Map<String,Class<?>> types

random

Random random

seed

Long seed

seedGenerator

Random seedGenerator

attributes

Double[] attributes

count

Long count

Constructor Detail

GaussianStream

public GaussianStream()

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,
                         Gaussian 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