org.hisee.core
Class ProjectSammon

java.lang.Object
  |
  +--org.hisee.core.Projector
        |
        +--org.hisee.core.ProjectSammon

public class ProjectSammon

extends Projector

ProjectSammon.java Implements gradient descent to compute image of Sammon projection.

Field Summary

Fields inherited from class org.hisee.core.Projector

addMethod, downstairs, theSettings, upstairs

Constructor Summary

ProjectSammon()

ProjectSammon(Settings set)

Method Summary

double	getEpsilon()
void	init(Dataset up, Dataset down) Perform necessary initialization
boolean	isExtendible()
boolean	isIterable()
double	iterate() Iterate the Sammon algorithm and return currentCloseness
void	project() Perform operations necessay to project the data.
void	setEpsilon(double d)

Methods inherited from class org.hisee.core.Projector

addDatapoint, addUpstairs, checkDatasets, compareDatasets, getAddMethod, getAddMethodIndex, getDownstairs, getPerturbationAmount, getTheSettings, getTolerance, getUpstairs, init, setAddMethod, setPerturbationAmount, setTheSettings, setTolerance

Methods inherited from class java.lang.Object

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

Constructor Detail

ProjectSammon

public ProjectSammon()

ProjectSammon

public ProjectSammon(Settings set)

Method Detail

init

public void init(Dataset up,
                 Dataset down)

Perform necessary initialization

Overrides:

init in class Projector

Parameters:

up - Reference to high dimensional dataset

down - Reference to low dimensional dataset. Pass NULL if not available

iterate

public double iterate()

Iterate the Sammon algorithm and return currentCloseness

Specified by:

iterate in class Projector

Returns:

the current error

isIterable

public boolean isIterable()

Specified by:

isIterable in class Projector

Returns:

true if this projection algorithm is iterable, false otherwise

isExtendible

public boolean isExtendible()

Specified by:

isExtendible in class Projector

Returns:

true if this projection algorithm accepts new new points, false otherwise

project

public void project()

Description copied from class: Projector

Perform operations necessay to project the data. For iterable functions this is just a stub.

Specified by:

project in class Projector

getEpsilon

public double getEpsilon()

Returns:

step size for Sammon map

setEpsilon

public void setEpsilon(double d)

Parameters:

d - step size for Sammon map