Package edu.cmu.tetrad.sem

Class SemOptimizerScattershot

java.lang.Object

edu.cmu.tetrad.sem.SemOptimizerScattershot

All Implemented Interfaces:

SemOptimizer, TetradSerializable, Serializable

public class SemOptimizerScattershot
extends Object
implements SemOptimizer

Optimizes a SEM by randomly selecting points in cubes of decreasing size about a given point.

Version:

$Id: $Id

Author:

josephramsey

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SemOptimizerScattershot()	Blank constructor.

Method Summary

Modifier and Type	Method	Description
int	getNumRestarts()	getNumRestarts.
void	optimize(SemIm semIm)	Optimizes the fitting function of a Sem by adjusting its parameter values.
static SemOptimizerScattershot	serializableInstance()	Generates a simple exemplar of this class to test serialization.
void	setNumRestarts(int numRestarts)	setNumRestarts.
String	toString()	toString.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

SemOptimizerScattershot

public SemOptimizerScattershot()

Blank constructor.

Method Details

serializableInstance

public static SemOptimizerScattershot serializableInstance()

Generates a simple exemplar of this class to test serialization.

Returns:

a SemOptimizerScattershot object

optimize

public void optimize(SemIm semIm)

Optimizes the fitting function of a Sem by adjusting its parameter values.

Optimizes the fitting function of the given Sem using the Powell method from Numerical Recipes by adjusting the freeParameters of the Sem.

Specified by:

optimize in interface SemOptimizer

Parameters:

semIm - The unoptimized Sem (will be optimized).

getNumRestarts

public int getNumRestarts()

getNumRestarts.

Specified by:

getNumRestarts in interface SemOptimizer

Returns:

a int

setNumRestarts

public void setNumRestarts(int numRestarts)

setNumRestarts.

Specified by:

setNumRestarts in interface SemOptimizer

Parameters:

numRestarts - a int

toString

public String toString()

toString.

Overrides:

toString in class Object

Returns:

a String object