ConditionalMixture

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riso.distributions
Class ConditionalMixture

java.lang.Object
  riso.distributions.AbstractConditionalDistribution
      riso.distributions.ConditionalMixture

All Implemented Interfaces:: ConditionalDistribution, java.io.Serializable

public abstract class ConditionalMixture
extends AbstractConditionalDistribution

An instance of this class represents a conditional mixture model. This is similar to an unconditional mixture (represented by the Mixture class), but the mixing coefficients can vary with the context (i.e., the parent variables). In the Mixture class, mixing coefficients are stored in an array, since they don't change; here, each mixing coefficient is returned by a function that takes the context as an argument. In addition, the mixture components are conditional distributions, not unconditional.

This class is declared abstract (i.e., it cannot be instantiated) because there is no generic way to compute the mixing coefficient function; each derived class implements that in its own way.

Field Summary

ConditionalDistribution[] components
          This array contains a reference to each mixture component.

Fields inherited from class riso.distributions.AbstractConditionalDistribution

associated_variable

Constructor Summary

ConditionalMixture()


Method Summary

abstract double mixing_coefficient(int i, double[] c)
          Returns the mixing coefficient for the i'th component, given the parent context c.

Methods inherited from class riso.distributions.AbstractConditionalDistribution

clone, get_nstates, parse_string, pretty_input, pretty_output, set_variable, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface riso.distributions.ConditionalDistribution

format_string, get_density, ndimensions_child, ndimensions_parent, p, random

Field Detail

components

public ConditionalDistribution[] components

This array contains a reference to each mixture component. Each component is a conditional distribution.

Constructor Detail