private void comparePotentialValues (LogTableFactor ptl, LogTableFactor ptl2) { AssignmentIterator it1 = ptl.assignmentIterator (); AssignmentIterator it2 = ptl2.assignmentIterator (); while (it1.hasNext ()) { assertTrue (ptl.value (it1) == ptl.value (it2)); it1.advance (); it2.advance (); } }
private void comparePotentialValues (LogTableFactor ptl, LogTableFactor ptl2) { AssignmentIterator it1 = ptl.assignmentIterator (); AssignmentIterator it2 = ptl2.assignmentIterator (); while (it1.hasNext ()) { assertTrue (ptl.value (it1) == ptl.value (it2)); it1.advance (); it2.advance (); } }
public void testLogValue () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; LogTableFactor ptl = LogTableFactor.makeFromValues (vars, new double[] { 1, 2, 3, 4 }); Assignment assn = new Assignment (vars, new int [vars.length]); assertEquals (0, ptl.logValue (assn), 1e-5); assertEquals (0, ptl.logValue (ptl.assignmentIterator()), 1e-5); assertEquals (0, ptl.logValue (0), 1e-5); assertEquals (1, ptl.value (assn), 1e-5); assertEquals (1, ptl.value (ptl.assignmentIterator()), 1e-5); assertEquals (1, ptl.value (0), 1e-5); LogTableFactor ptl2 = LogTableFactor.makeFromLogValues (vars, new double[] { 0, Math.log (2), Math.log (3), Math.log (4) }); Assignment assn2 = new Assignment (vars, new int [vars.length]); assertEquals (0, ptl2.logValue (assn2), 1e-5); assertEquals (0, ptl2.logValue (ptl2.assignmentIterator()), 1e-5); assertEquals (0, ptl2.logValue (0), 1e-5); assertEquals (1, ptl2.value (assn2), 1e-5); assertEquals (1, ptl2.value (ptl2.assignmentIterator()), 1e-5); assertEquals (1, ptl2.value (0), 1e-5); }
public void testLogValue () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; LogTableFactor ptl = LogTableFactor.makeFromValues (vars, new double[] { 1, 2, 3, 4 }); Assignment assn = new Assignment (vars, new int [vars.length]); assertEquals (0, ptl.logValue (assn), 1e-5); assertEquals (0, ptl.logValue (ptl.assignmentIterator()), 1e-5); assertEquals (0, ptl.logValue (0), 1e-5); assertEquals (1, ptl.value (assn), 1e-5); assertEquals (1, ptl.value (ptl.assignmentIterator()), 1e-5); assertEquals (1, ptl.value (0), 1e-5); LogTableFactor ptl2 = LogTableFactor.makeFromLogValues (vars, new double[] { 0, Math.log (2), Math.log (3), Math.log (4) }); Assignment assn2 = new Assignment (vars, new int [vars.length]); assertEquals (0, ptl2.logValue (assn2), 1e-5); assertEquals (0, ptl2.logValue (ptl2.assignmentIterator()), 1e-5); assertEquals (0, ptl2.logValue (0), 1e-5); assertEquals (1, ptl2.value (assn2), 1e-5); assertEquals (1, ptl2.value (ptl2.assignmentIterator()), 1e-5); assertEquals (1, ptl2.value (0), 1e-5); }
private DiscreteFactor constructConditionalCpt (FactorGraph mdl, Variable var, Assignment fullAssn) { List ptlList = mdl.allFactorsContaining (var); LogTableFactor ptl = new LogTableFactor (var); for (AssignmentIterator it = ptl.assignmentIterator (); it.hasNext(); it.advance ()) { Assignment varAssn = it.assignment (); fullAssn.setValue (var, varAssn.get (var)); ptl.setRawValue (varAssn, sumValues (ptlList, fullAssn)); } ptl.normalize (); return ptl; }
private DiscreteFactor constructConditionalCpt (FactorGraph mdl, Variable var, Assignment fullAssn) { List ptlList = mdl.allFactorsContaining (var); LogTableFactor ptl = new LogTableFactor (var); for (AssignmentIterator it = ptl.assignmentIterator (); it.hasNext(); it.advance ()) { Assignment varAssn = it.assignment (); fullAssn.setValue (var, varAssn.get (var)); ptl.setRawValue (varAssn, sumValues (ptlList, fullAssn)); } ptl.normalize (); return ptl; }
private DiscreteFactor constructConditionalCpt (FactorGraph mdl, Variable var, Assignment fullAssn) { List ptlList = mdl.allFactorsContaining (var); LogTableFactor ptl = new LogTableFactor (var); for (AssignmentIterator it = ptl.assignmentIterator (); it.hasNext(); it.advance ()) { Assignment varAssn = it.assignment (); fullAssn.setValue (var, varAssn.get (var)); ptl.setRawValue (varAssn, sumValues (ptlList, fullAssn)); } ptl.normalize (); return ptl; }
public void testSparseValueAndLogValue () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; int[] szs = { 2, 2 }; int[] idxs1 = new int[] { 1, 3 }; double[] vals1 = new double[]{ 4.0, 8.0 }; LogTableFactor ptl1 = LogTableFactor.makeFromMatrix (vars, new SparseMatrixn (szs, idxs1, vals1)); AssignmentIterator it = ptl1.assignmentIterator (); assertEquals (1, it.indexOfCurrentAssn ()); assertEquals (Math.log (4), ptl1.logValue (it), 1e-5); assertEquals (Math.log (4), ptl1.logValue (it.assignment ()), 1e-5); assertEquals (4, ptl1.value (it), 1e-5); assertEquals (4, ptl1.value (it.assignment ()), 1e-5); it = ptl1.varSet ().assignmentIterator (); assertEquals (0, it.indexOfCurrentAssn ()); assertEquals (Double.NEGATIVE_INFINITY, ptl1.logValue (it), 1e-5); assertEquals (Double.NEGATIVE_INFINITY, ptl1.logValue (it.assignment ()), 1e-5); assertEquals (0, ptl1.value (it), 1e-5); assertEquals (0, ptl1.value (it.assignment ()), 1e-5); }
public void testSparseValueAndLogValue () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; int[] szs = { 2, 2 }; int[] idxs1 = new int[] { 1, 3 }; double[] vals1 = new double[]{ 4.0, 8.0 }; LogTableFactor ptl1 = LogTableFactor.makeFromMatrix (vars, new SparseMatrixn (szs, idxs1, vals1)); AssignmentIterator it = ptl1.assignmentIterator (); assertEquals (1, it.indexOfCurrentAssn ()); assertEquals (Math.log (4), ptl1.logValue (it), 1e-5); assertEquals (Math.log (4), ptl1.logValue (it.assignment ()), 1e-5); assertEquals (4, ptl1.value (it), 1e-5); assertEquals (4, ptl1.value (it.assignment ()), 1e-5); it = ptl1.varSet ().assignmentIterator (); assertEquals (0, it.indexOfCurrentAssn ()); assertEquals (Double.NEGATIVE_INFINITY, ptl1.logValue (it), 1e-5); assertEquals (Double.NEGATIVE_INFINITY, ptl1.logValue (it.assignment ()), 1e-5); assertEquals (0, ptl1.value (it), 1e-5); assertEquals (0, ptl1.value (it.assignment ()), 1e-5); }