org.simbrain.util.projection

Class ProjectTriangulate

java.lang.Object

org.simbrain.util.projection.ProjectionMethod

org.simbrain.util.projection.ProjectTriangulate

public class ProjectTriangulate
extends ProjectionMethod

ProjectTriangulate takes each new point and determines which two points in the current data set are closest to it. Then, if possible, it will place the projected image of the new point so that its distance from the projected image of its two nearest neighbors is the same as it was in the high dimensional space. When it is not possible to project the point such that its distance to its two nearest neighbors is preserved, then the projected image of the new point will be placed on a line connecting the projected image of its two nearest neighbors. In this case the position of the projected image of the new point on this line is determined by the relative sizes of the distances between the new point and its two nearest neighbors in the current data set.

Author:

Scott Hotton

Field Summary

Fields inherited from class org.simbrain.util.projection.ProjectionMethod

projector

Constructor Summary

Constructors

Constructor and Description
ProjectTriangulate(Projector projector) Default PCA project.

Method Summary

Modifier and Type	Method and Description
void	init() Perform any initialization necessary for a given projection method.
void	project() Perform operations necessary to project the data.
int	suggestedMinPoints() Some projection methods require a certain number of datapoints to be added before they work well.

Methods inherited from class org.simbrain.util.projection.ProjectionMethod

isIterable

Methods inherited from class java.lang.Object

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

Constructor Detail

ProjectTriangulate

public ProjectTriangulate(Projector projector)

Default PCA project.

Parameters:

projector -

Method Detail

init

public void init()

Description copied from class: ProjectionMethod

Perform any initialization necessary for a given projection method.

Specified by:

init in class ProjectionMethod

project

public void project()

Description copied from class: ProjectionMethod

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

Specified by:

project in class ProjectionMethod

suggestedMinPoints

public int suggestedMinPoints()

Description copied from class: ProjectionMethod

Some projection methods require a certain number of datapoints to be added before they work well. By default this is 0 because most methods don't require this. Those methods that do can override this. It is used to generate a warning in the GUI if a method is selected when fewer then suggested min points have been added to the dataset.

Overrides:

suggestedMinPoints in class ProjectionMethod

Returns:

the suggested minimum number of points.