protected void plusEqualsAtLocation (int loc, double v) { Flops.log (); Flops.sumLogProb (1); double oldVal = logValue (loc); setRawValue (loc, Maths.sumLogProb (oldVal, Math.log (v))); }
protected void plusEqualsAtLocation (int loc, double v) { Flops.log (); Flops.sumLogProb (1); double oldVal = logValue (loc); setRawValue (loc, Maths.sumLogProb (oldVal, Math.log (v))); }
protected void plusEqualsAtLocation (int loc, double v) { Flops.log (); Flops.sumLogProb (1); double oldVal = logValue (loc); setRawValue (loc, Maths.sumLogProb (oldVal, Math.log (v))); }
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); }
protected Factor slice_onevar (Variable var, Assignment observed) { Assignment assn = (Assignment) observed.duplicate (); double[] vals = new double [var.getNumOutcomes ()]; for (int i = 0; i < var.getNumOutcomes (); i++) { assn.setValue (var, i); vals[i] = logValue (assn); } return LogTableFactor.makeFromLogValues (var, vals); }
protected Factor slice_onevar (Variable var, Assignment observed) { Assignment assn = (Assignment) observed.duplicate (); double[] vals = new double [var.getNumOutcomes ()]; for (int i = 0; i < var.getNumOutcomes (); i++) { assn.setValue (var, i); vals[i] = logValue (assn); } return LogTableFactor.makeFromLogValues (var, vals); }
protected Factor slice_onevar (Variable var, Assignment observed) { Assignment assn = (Assignment) observed.duplicate (); double[] vals = new double [var.getNumOutcomes ()]; for (int i = 0; i < var.getNumOutcomes (); i++) { assn.setValue (var, i); vals[i] = logValue (assn); } return LogTableFactor.makeFromLogValues (var, vals); }
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 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); }
protected Factor slice_twovar (Variable v1, Variable v2, Assignment observed) { Assignment assn = (Assignment) observed.duplicate (); int N1 = v1.getNumOutcomes (); int N2 = v2.getNumOutcomes (); int[] szs = new int[]{N1, N2}; double[] vals = new double [N1 * N2]; for (int i = 0; i < N1; i++) { assn.setValue (v1, i); for (int j = 0; j < N2; j++) { assn.setValue (v2, j); int idx = Matrixn.singleIndex (szs, new int[]{i, j}); // Inefficient, but much less error prone vals[idx] = logValue (assn); } } return LogTableFactor.makeFromLogValues (new Variable[]{v1, v2}, vals); }
protected Factor slice_twovar (Variable v1, Variable v2, Assignment observed) { Assignment assn = (Assignment) observed.duplicate (); int N1 = v1.getNumOutcomes (); int N2 = v2.getNumOutcomes (); int[] szs = new int[]{N1, N2}; double[] vals = new double [N1 * N2]; for (int i = 0; i < N1; i++) { assn.setValue (v1, i); for (int j = 0; j < N2; j++) { assn.setValue (v2, j); int idx = Matrixn.singleIndex (szs, new int[]{i, j}); // Inefficient, but much less error prone vals[idx] = logValue (assn); } } return LogTableFactor.makeFromLogValues (new Variable[]{v1, v2}, vals); }
protected Factor slice_twovar (Variable v1, Variable v2, Assignment observed) { Assignment assn = (Assignment) observed.duplicate (); int N1 = v1.getNumOutcomes (); int N2 = v2.getNumOutcomes (); int[] szs = new int[]{N1, N2}; double[] vals = new double [N1 * N2]; for (int i = 0; i < N1; i++) { assn.setValue (v1, i); for (int j = 0; j < N2; j++) { assn.setValue (v2, j); int idx = Matrixn.singleIndex (szs, new int[]{i, j}); // Inefficient, but much less error prone vals[idx] = logValue (assn); } } return LogTableFactor.makeFromLogValues (new Variable[]{v1, v2}, vals); }
protected Factor slice_general (Variable[] vars, Assignment observed) { VarSet toKeep = new HashVarSet (vars); toKeep.removeAll (observed.varSet ()); double[] vals = new double [toKeep.weight ()]; AssignmentIterator it = toKeep.assignmentIterator (); while (it.hasNext ()) { Assignment union = Assignment.union (observed, it.assignment ()); vals[it.indexOfCurrentAssn ()] = logValue (union); it.advance (); } return LogTableFactor.makeFromLogValues (toKeep.toVariableArray (), vals); }
protected Factor slice_general (Variable[] vars, Assignment observed) { VarSet toKeep = new HashVarSet (vars); toKeep.removeAll (observed.varSet ()); double[] vals = new double [toKeep.weight ()]; AssignmentIterator it = toKeep.assignmentIterator (); while (it.hasNext ()) { Assignment union = Assignment.union (observed, it.assignment ()); vals[it.indexOfCurrentAssn ()] = logValue (union); it.advance (); } return LogTableFactor.makeFromLogValues (toKeep.toVariableArray (), vals); }
protected Factor slice_general (Variable[] vars, Assignment observed) { VarSet toKeep = new HashVarSet (vars); toKeep.removeAll (observed.varSet ()); double[] vals = new double [toKeep.weight ()]; AssignmentIterator it = toKeep.assignmentIterator (); while (it.hasNext ()) { Assignment union = Assignment.union (observed, it.assignment ()); vals[it.indexOfCurrentAssn ()] = logValue (union); it.advance (); } return LogTableFactor.makeFromLogValues (toKeep.toVariableArray (), vals); }