Class DegenerateGaussianScore
- All Implemented Interfaces:
Score
This implements the degenerate Gaussian BIC score for FGES. The degenerate Gaussian score replaces each discrete variable in the data with a list of 0/1 continuous indicator columns for each of the categories but one (the last one implied). This data, now all continuous, is given to the SEM BIC score and methods used to help determine conditional independence for the mixed continuous/discrete case from this information. The references is as follows:
Andrews, B., Ramsey, J., & Cooper, G. F. (2019, July). Learning high-dimensional directed acyclic graphs with mixed data-types. In The 2019 ACM SIGKDD Workshop on Causal Discovery (pp. 4-21). PMLR.
As for all scores in Tetrad, higher scores mean more dependence, and negative scores indicate independence.
- Author:
- Bryan Andrews
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionint
Returns the max degree, by default 1000.double
int
The sample size of the data.The variables of the score.boolean
isEffectEdge
(double bump) Returns true iff the edge between x and y is an effect edge.double
localScore
(int i, int... parents) Calculates the sample likelihood and BIC score for i given its parents in a simple SEM model.double
localScoreDiff
(int x, int y, int[] z) Returns the score difference of the graph.void
setPenaltyDiscount
(double penaltyDiscount) toString()
A string representation of the score.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface edu.cmu.tetrad.search.score.Score
append, determines, getVariable, localScore, localScore, localScoreDiff
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Constructor Details
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DegenerateGaussianScore
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Method Details
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localScore
public double localScore(int i, int... parents) Calculates the sample likelihood and BIC score for i given its parents in a simple SEM model. s- Specified by:
localScore
in interfaceScore
- Parameters:
i
- The child indes.parents
- The indices of the parents.- Returns:
- The score.
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localScoreDiff
public double localScoreDiff(int x, int y, int[] z) Description copied from interface:Score
Returns the score difference of the graph.- Specified by:
localScoreDiff
in interfaceScore
- Parameters:
x
- A node.y
- TAhe node.z
- A set of nodes.- Returns:
- The score difference.
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getVariables
Description copied from interface:Score
The variables of the score.- Specified by:
getVariables
in interfaceScore
- Returns:
- This list.
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isEffectEdge
public boolean isEffectEdge(double bump) Description copied from interface:Score
Returns true iff the edge between x and y is an effect edge.- Specified by:
isEffectEdge
in interfaceScore
- Parameters:
bump
- The bump.- Returns:
- True iff the edge between x and y is an effect edge.
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getSampleSize
public int getSampleSize()Description copied from interface:Score
The sample size of the data.- Specified by:
getSampleSize
in interfaceScore
- Returns:
- This size.
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getMaxDegree
public int getMaxDegree()Description copied from interface:Score
Returns the max degree, by default 1000.- Specified by:
getMaxDegree
in interfaceScore
- Returns:
- The max degree.
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toString
Description copied from interface:Score
A string representation of the score. -
getPenaltyDiscount
public double getPenaltyDiscount() -
setPenaltyDiscount
public void setPenaltyDiscount(double penaltyDiscount)
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