Examples of aima.core.probability.bayes.exact.EnumerationAsk

Package aima.core.probability.bayes.exact

Examples of aima.core.probability.bayes.exact.EnumerationAsk

aima.core.probability.bayes.exact.EnumerationAsk
<- a distribution over X, initially empty for each value x_i of X do Q(x_i) <- ENUMERATE-ALL(bn.VARS, e_{x_i}) where e_{x_i} is e extended with X = x_i return NORMALIZE(Q(X)) --------------------------------------------------------------------------------------------------- function ENUMERATE-ALL(vars, e) returns a real number if EMPTY?(vars) then return 1.0 Y <- FIRST(vars) if Y has value y in e then return P(y | parents(Y)) * ENUMERATE-ALL(REST(vars), e) else return ∑_y P(y | parents(Y)) * ENUMERATE-ALL(REST(vars), e_y) where e_y is e extended with Y = y Figure 14.9 The enumeration algorithm for answering queries on Bayesian networks.

Note: The implementation has been extended to handle queries with multiple variables.
@author Ciaran O'Reilly

  private BayesianNetwork bayesNet = null;
  private Set<RandomVariable> representation = new LinkedHashSet<RandomVariable>();
  private BayesInference bayesInference = null;


  public FiniteBayesModel(BayesianNetwork bn) {
    this(bn, new EnumerationAsk());
  }

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  public static void bayesEnumerationAskDemo() {
    System.out.println("DEMO: Bayes Enumeration Ask");
    System.out.println("===========================");
    demoToothacheCavityCatchModel(new FiniteBayesModel(
        BayesNetExampleFactory.constructToothacheCavityCatchNetwork(),
        new EnumerationAsk()));
    demoBurglaryAlarmModel(new FiniteBayesModel(
        BayesNetExampleFactory.constructBurglaryAlarmNetwork(),
        new EnumerationAsk()));
    System.out.println("===========================");
  }

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  private BayesianNetwork bayesNet = null;
  private Set<RandomVariable> representation = new LinkedHashSet<RandomVariable>();
  private BayesInference bayesInference = null;


  public FiniteBayesModel(BayesianNetwork bn) {
    this(bn, new EnumerationAsk());
  }

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  //
  // PRIVATE METHODS
  //
  private BayesInference[] getBayesInferenceImplementations() {
    return new BayesInference[] { new EnumerationAsk(),
        new EliminationAsk() };
  }

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 */
public class EnumerationAskTest extends BayesianInferenceTest {


  @Before
  public void setUp() {
    bayesInference = new EnumerationAsk();
  }

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Related Classes of aima.core.probability.bayes.exact.EnumerationAsk

aima.core.probability.bayes.FiniteNode

aima.core.probability.bayes.model.FiniteBayesModel

aima.core.probability.bayes.Node

aima.core.probability.RandomVariable

aima.core.probability.util.ProbabilityTable

aima.gui.demo.probability.ProbabilityDemo

aima.test.core.unit.probability.bayes.exact.EnumerationAskTest

aima.test.core.unit.probability.bayes.model.FiniteBayesModelTest

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