Class BoaEbnaModel

java.lang.Object

com.knezevic.edaf.v3.models.discrete.BoaEbnaModel

All Implemented Interfaces:

Model<BitString>

public final class BoaEbnaModel
extends Object
implements Model<BitString>

Sparse Bayesian-network model used by BOA/EBNA-style discrete EDAs.

Variables are ordered by entropy and each node chooses up to maxParents predecessors with highest mutual information. The resulting directed acyclic graph defines:

   p(x) = Π_i p(x_i | Pa(x_i))
 

with Laplace-smoothed conditional probability tables.

Compared to tree models, this representation captures higher-order local structure while keeping sampling exact and deterministic given RNG stream.

Constructor Summary

Constructors

Constructor	Description
BoaEbnaModel(int maxParents, double smoothing)

Method Summary

Modifier and Type	Method	Description
ModelDiagnostics	diagnostics()	Exposes diagnostics (entropy, covariance condition number, etc.).
void	fit(List<Individual<BitString>> selected, Representation<BitString> representation, RngStream rng)	Fits model parameters from selected individuals.
String	name()	Model identifier used in configuration and listing commands.
List<BitString>	sample(int count, Representation<BitString> representation, Problem<BitString> problem, ConstraintHandling<BitString> constraintHandling, RngStream rng)	Samples new genotypes from model.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.knezevic.edaf.v3.core.api.Model

update

Constructor Details

BoaEbnaModel

public BoaEbnaModel(int maxParents,
 double smoothing)

Parameters:

maxParents - upper bound on parent count per node

smoothing - Laplace smoothing for CPT estimation

Method Details

name

public String name()

Description copied from interface: Model

Model identifier used in configuration and listing commands.

Specified by:

name in interface Model<BitString>

fit

public void fit(List<Individual<BitString>> selected,
 Representation<BitString> representation,
 RngStream rng)

Description copied from interface: Model

Fits model parameters from selected individuals.

Specified by:

fit in interface Model<BitString>

sample

public List<BitString> sample(int count,
 Representation<BitString> representation,
 Problem<BitString> problem,
 ConstraintHandling<BitString> constraintHandling,
 RngStream rng)

Description copied from interface: Model

Samples new genotypes from model.

Specified by:

sample in interface Model<BitString>

diagnostics

public ModelDiagnostics diagnostics()

Description copied from interface: Model

Exposes diagnostics (entropy, covariance condition number, etc.).

Specified by:

diagnostics in interface Model<BitString>