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 testEntropyLogSpace () { Variable v1 = new Variable (2); TableFactor ptl = new TableFactor (v1, new double[] { 0.3, 0.7 }); double entropy = ptl.entropy (); assertEquals (0.61086, entropy, 1e-3); LogTableFactor ptl2 = LogTableFactor.makeFromValues (v1, new double[] { 0.3, 0.7 }); double entropy2 = ptl2.entropy (); assertEquals (0.61086, entropy2, 1e-3); }
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 testEntropyLogSpace () { Variable v1 = new Variable (2); TableFactor ptl = new TableFactor (v1, new double[] { 0.3, 0.7 }); double entropy = ptl.entropy (); assertEquals (0.61086, entropy, 1e-3); LogTableFactor ptl2 = LogTableFactor.makeFromValues (v1, new double[] { 0.3, 0.7 }); double entropy2 = ptl2.entropy (); assertEquals (0.61086, entropy2, 1e-3); }
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); }
public void testLogSample () { Variable v = new Variable (2); double[] vals = new double[] { -30, 0 }; LogTableFactor ptl = LogTableFactor.makeFromLogValues (v, vals); int idx = ptl.sampleLocation (new Randoms (43)); assertEquals (1, idx); }
public void testLogSample () { Variable v = new Variable (2); double[] vals = new double[] { -30, 0 }; LogTableFactor ptl = LogTableFactor.makeFromLogValues (v, vals); int idx = ptl.sampleLocation (new Randoms (43)); assertEquals (1, idx); }
public void testOneVarSlice () { double[] vals = { 0.0, 1.3862943611198906, 0.6931471805599453, 1.791759469228055 }; Variable v1 = new Variable (2); Variable v2 = new Variable (2); Variable[] vars = new Variable[]{v1, v2}; Factor ptl = LogTableFactor.makeFromLogValues(vars, vals); Assignment assn = new Assignment (v1, 0); LogTableFactor sliced = (LogTableFactor) ptl.slice (assn); LogTableFactor expected = LogTableFactor.makeFromValues (v2, new double[] { 1.0, 4.0 }); comparePotentialValues (sliced, expected); assertEquals (1, assn.varSet ().size ()); }
public void testOneVarSlice () { double[] vals = { 0.0, 1.3862943611198906, 0.6931471805599453, 1.791759469228055 }; Variable v1 = new Variable (2); Variable v2 = new Variable (2); Variable[] vars = new Variable[]{v1, v2}; Factor ptl = LogTableFactor.makeFromLogValues(vars, vals); Assignment assn = new Assignment (v1, 0); LogTableFactor sliced = (LogTableFactor) ptl.slice (assn); LogTableFactor expected = LogTableFactor.makeFromValues (v2, new double[] { 1.0, 4.0 }); comparePotentialValues (sliced, expected); assertEquals (1, assn.varSet ().size ()); }
public void testExtractMaxLogSpace () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; LogTableFactor ptl = LogTableFactor.makeFromValues (vars, new double[]{1, 2, 3, 4}); LogTableFactor ptl2 = (LogTableFactor) ptl.extractMax (vars[1]); assertEquals ("FAILURE: Potential has too many vars.\n "+ptl2, 1, ptl2.varSet ().size ()); assertTrue ("FAILURE: Potential does not contain "+vars[1]+":\n "+ptl2, ptl2.varSet ().contains (vars[1])); double[] expected = new double[] { 3, 4 }; assertTrue ("FAILURE: Potential has incorrect values. Expected "+ArrayUtils.toString (expected)+"was "+ptl2, Maths.almostEquals (ptl2.toValueArray (), expected, 1e-5)); }
public void testExtractMaxLogSpace () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; LogTableFactor ptl = LogTableFactor.makeFromValues (vars, new double[]{1, 2, 3, 4}); LogTableFactor ptl2 = (LogTableFactor) ptl.extractMax (vars[1]); assertEquals ("FAILURE: Potential has too many vars.\n "+ptl2, 1, ptl2.varSet ().size ()); assertTrue ("FAILURE: Potential does not contain "+vars[1]+":\n "+ptl2, ptl2.varSet ().contains (vars[1])); double[] expected = new double[] { 3, 4 }; assertTrue ("FAILURE: Potential has incorrect values. Expected "+ArrayUtils.toString (expected)+"was "+ptl2, Maths.almostEquals (ptl2.toValueArray (), expected, 1e-5)); }