Package edu.cmu.tetrad.search.utils

Class Purify

java.lang.Object

edu.cmu.tetrad.search.utils.Purify

public class Purify
extends Object

Implements the Purify algorithm, which is a implementation of the automated purification methods described on CPS and the report "Learning Measurement Models" CMU-CALD-03-100.

No background knowledge is allowed yet. Future versions of this algorithm will include it.

References:

Silva, R.; Scheines, R.; Spirtes, P.; Glymour, C. (2003). "Learning measurement models". Technical report CMU-CALD-03-100, Center for Automated Learning and Discovery, Carnegie Mellon University.

Bollen, K. (1990). "Outlier screening and distribution-free test for vanishing tetrads." Sociological Methods and Research 19, 80-92.

Drton, M. and Richardson, T. (2003). "Iterative conditional fitting for Gaussian ancestral graphical models". Technical report, Department of Statistics, University of Washington.

Wishart, J. (1928). "Sampling errors in the theory of two factors". British Journal of Psychology 19, 180-187.

Version:

$Id: $Id

Author:

Ricardo Silva

Constructor Summary

Constructors

Constructor	Description
Purify(CorrelationMatrix correlationMatrix, double sig, BpcTestType testType, Clusters clusters)	****************************************************** INITIALIZATION o *******************************************************
Purify(DataSet dataSet, double sig, BpcTestType testType, Clusters clusters)	Constructor for Purify.
Purify(TetradTest tetradTest, Clusters knowledge)	Constructor for Purify.

Method Summary

Modifier and Type	Method	Description
static Graph	convertSearchGraph(SemGraph input)	convertSearchGraph.
Graph	search()	****************************************************** SEARCH INTERFACE *******************************************************

Methods inherited from class java.lang.Object

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

Constructor Details

Purify

public Purify(CorrelationMatrix correlationMatrix,
 double sig,
 BpcTestType testType,
 Clusters clusters)

****************************************************** INITIALIZATION o *******************************************************

Parameters:

correlationMatrix - a CorrelationMatrix object

sig - a double

testType - a BpcTestType object

clusters - a Clusters object

Purify

public Purify(DataSet dataSet,
 double sig,
 BpcTestType testType,
 Clusters clusters)

Constructor for Purify.

Parameters:

dataSet - a DataSet object

sig - a double

testType - a BpcTestType object

clusters - a Clusters object

Purify

public Purify(TetradTest tetradTest,
 Clusters knowledge)

Constructor for Purify.

Parameters:

tetradTest - a TetradTest object

knowledge - a Clusters object

Method Details

convertSearchGraph

public static Graph convertSearchGraph(SemGraph input)

convertSearchGraph.

Parameters:

input - a SemGraph object

Returns:

a Graph object

search

public Graph search()

****************************************************** SEARCH INTERFACE *******************************************************

Returns:

a Graph object