Class Gmas

java.lang.Object

edu.cmu.tetrad.algcomparison.algorithm.AbstractBootstrapAlgorithm

edu.cmu.tetrad.algcomparison.algorithm.oracle.pag.Gmas

All Implemented Interfaces:

Algorithm, LatentStructureAlgorithm, ReturnsBootstrapGraphs, TakesCovarianceMatrix, AcceptsKnowledge, HasParameters, TakesScoreWrapper, TetradSerializable, Serializable

@Algorithm(name="GMAS",
           command="gmas",
           algoType=allow_latent_common_causes)
@Bootstrapping
@Experimental
public class Gmas
extends AbstractBootstrapAlgorithm
implements Algorithm, TakesScoreWrapper, AcceptsKnowledge, ReturnsBootstrapGraphs, TakesCovarianceMatrix, LatentStructureAlgorithm

GMAS: a latent-variable search that uses no independence tests. A BOSS CPDAG is projected to a PAG and then to its Zhang MAG, and that MAG is improved by steepest-ascent greedy search under the Gaussian MAG BIC, moving only among legal MAGs, with deletion, reversal, type change (directed to bidirected and back), and addition as moves. The final MAG is projected back to a PAG.

Author:

josephramsey

See Also:

• Gmas
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Gmas()	Used for reflection; do not delete.
Gmas(ScoreWrapper score)	Constructs a GMAS algorithm with the given score.

Method Summary

Modifier and Type	Method	Description
Graph	getComparisonGraph(Graph graph)	Returns the comparison graph, the PAG of the true DAG.
DataType	getDataType()	Returns the data type required.
String	getDescription()	Returns a short description of this algorithm.
Knowledge	getKnowledge()	Returns the knowledge.
List<String>	getParameters()	Returns the parameters used.
ScoreWrapper	getScoreWrapper()	Returns the score wrapper.
Graph	runSearch(DataModel dataModel, Parameters parameters)	Runs the search.
void	setKnowledge(Knowledge knowledge)	Sets the knowledge.
void	setScoreWrapper(ScoreWrapper score)	Sets the score wrapper.

Methods inherited from class AbstractBootstrapAlgorithm

getBootstrapGraphs, search

Methods inherited from class Object

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

Methods inherited from interface Algorithm

search

Methods inherited from interface ReturnsBootstrapGraphs

getBootstrapGraphs

Constructor Details

Gmas

public Gmas()

Used for reflection; do not delete.

Gmas

public Gmas(ScoreWrapper score)

Constructs a GMAS algorithm with the given score.

Parameters:

score - The score to use.

Method Details

runSearch

public Graph runSearch(DataModel dataModel,
 Parameters parameters)
                throws InterruptedException

Runs the search.

Parameters:

dataModel - The data model.

parameters - The parameters.

Returns:

The estimated PAG.

Throws:

InterruptedException

getComparisonGraph

public Graph getComparisonGraph(Graph graph)

Returns the comparison graph, the PAG of the true DAG.

Specified by:

getComparisonGraph in interface Algorithm

Parameters:

graph - The true directed graph, if there is one.

Returns:

The comparison graph.

getDescription

public String getDescription()

Returns a short description of this algorithm.

Specified by:

getDescription in interface Algorithm

Returns:

The description.

getDataType

public DataType getDataType()

Returns the data type required.

Specified by:

getDataType in interface Algorithm

Returns:

The data type.

getParameters

public List<String> getParameters()

Returns the parameters used.

Specified by:

getParameters in interface HasParameters

Returns:

The parameters.

getKnowledge

public Knowledge getKnowledge()

Returns the knowledge.

Specified by:

getKnowledge in interface AcceptsKnowledge

Returns:

The knowledge.

setKnowledge

public void setKnowledge(Knowledge knowledge)

Sets the knowledge.

Specified by:

setKnowledge in interface AcceptsKnowledge

Parameters:

knowledge - The knowledge.

getScoreWrapper

public ScoreWrapper getScoreWrapper()

Returns the score wrapper.

Specified by:

getScoreWrapper in interface TakesScoreWrapper

Returns:

The score wrapper.

setScoreWrapper

public void setScoreWrapper(ScoreWrapper score)

Sets the score wrapper.

Specified by:

setScoreWrapper in interface TakesScoreWrapper

Parameters:

score - The score wrapper.