Examples of cc.mallet.grmm.types.Factor.normalize()

cc.mallet.grmm.types.Factor.normalize()
Multiplies this potential by a constant such that it sums to 1. Destructive; returns this factor.

      Factor fromCpf = jt.getCPF (from);
      Factor toCpf = jt.getCPF (to);
      Factor oldSepsetPot = jt.getSepsetPot (from, to);
      Factor lambda = fromCpf.marginalize (sepset);


      lambda.normalize ();


      jt.setSepsetPot (lambda, from, to);
      toCpf = toCpf.multiply (lambda);
      toCpf.divideBy (oldSepsetPot);
      toCpf.normalize ();

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      Factor fromCpf = jt.getCPF (from);
      Factor toCpf = jt.getCPF (to);
      Factor oldSepsetPot = jt.getSepsetPot (from, to);
      Factor lambda = fromCpf.extractMax (sepset);


      lambda.normalize ();


      jt.setSepsetPot (lambda, from, to);
      toCpf = toCpf.multiply (lambda);
      toCpf.divideBy (oldSepsetPot);
      toCpf.normalize ();

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  }


  public Factor lookupMarginal (Variable var)
  {
    Factor marginal = unnormalizedMarginal (mdlCurrent, var);
    marginal.normalize();
    return marginal;
  }


  // Serialization
  private static final long serialVersionUID = 1;

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      logger.finer ("Lookup jt marginal: clique " + varSet + " cluster " + parent);
      logger.finest ("  cpf " + cpf);
    }


    Factor marginal = strategy.extractBelief (cpf, varSet);
    marginal.normalize ();


    return marginal;
  }


  public Factor lookupMarginal (JunctionTree jt, Variable var)

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      logger.finer ("Lookup jt marginal: var " + var + " cluster " + parent);
      logger.finest (" cpf " + cpf);
    }


    Factor marginal = strategy.extractBelief (cpf, new HashVarSet (new Variable[] { var }));
    marginal.normalize ();


    return marginal;
  }


  ///////////////////////////////////////////////////////////////////////////

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