public void testEntropy () { 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 logFactor = LogTableFactor.makeFromValues (v1, new double[] { 0.3, 0.7 }); double entropy2 = logFactor.entropy (); assertEquals (0.61086, entropy2, 1e-3); }
public void testEntropy () { 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 logFactor = LogTableFactor.makeFromValues (v1, new double[] { 0.3, 0.7 }); double entropy2 = logFactor.entropy (); assertEquals (0.61086, entropy2, 1e-3); }
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 testSample () { Variable v = new Variable (3); double[] vals = new double[] { 1, 3, 2 }; TableFactor ptl = new TableFactor (v, vals); int[] sampled = new int [100]; Randoms r = new Randoms (32423); for (int i = 0; i < sampled.length; i++) { sampled[i] = ptl.sampleLocation (r); } double sum = MatrixOps.sum (vals); double[] counts = new double [vals.length]; for (int i = 0; i < vals.length; i++) { counts[i] = ArrayUtils.count (sampled, i); } MatrixOps.print (counts); for (int i = 0; i < vals.length; i++) { double prp = counts[i] / ((double) sampled.length); assertEquals (vals[i] / sum, prp, 0.1); } }
public void testSample () { Variable v = new Variable (3); double[] vals = new double[] { 1, 3, 2 }; TableFactor ptl = new TableFactor (v, vals); int[] sampled = new int [100]; Randoms r = new Randoms (32423); for (int i = 0; i < sampled.length; i++) { sampled[i] = ptl.sampleLocation (r); } double sum = MatrixOps.sum (vals); double[] counts = new double [vals.length]; for (int i = 0; i < vals.length; i++) { counts[i] = ArrayUtils.count (sampled, i); } MatrixOps.print (counts); for (int i = 0; i < vals.length; i++) { double prp = counts[i] / ((double) sampled.length); assertEquals (vals[i] / sum, prp, 0.1); } }
public void testMarginalize () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; TableFactor ptl = new TableFactor (vars, new double[] { 1, 2, 3, 4}); TableFactor ptl2 = (TableFactor) ptl.marginalize (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[] { 4, 6 }; assertTrue ("FAILURE: Potential has incorrect values. Expected "+ArrayUtils.toString (expected)+"was "+ptl2, Maths.almostEquals (ptl2.toValueArray (), expected, 1e-5)); }
public void testMarginalize () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; TableFactor ptl = new TableFactor (vars, new double[] { 1, 2, 3, 4}); TableFactor ptl2 = (TableFactor) ptl.marginalize (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[] { 4, 6 }; assertTrue ("FAILURE: Potential has incorrect values. Expected "+ArrayUtils.toString (expected)+"was "+ptl2, Maths.almostEquals (ptl2.toValueArray (), expected, 1e-5)); }
public void testMarginalizeOut () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; TableFactor ptl = new TableFactor (vars, new double[] { 1, 2, 3, 4}); TableFactor ptl2 = (TableFactor) ptl.marginalizeOut (vars[0]); 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[] { 4, 6 }; assertTrue ("FAILURE: Potential has incorrect values. Expected "+ArrayUtils.toString (expected)+"was "+ptl2, Maths.almostEquals (ptl2.toValueArray (), expected, 1e-5)); }
public void testMarginalizeOut () { Variable[] vars = new Variable[] { new Variable (2), new Variable (2) }; TableFactor ptl = new TableFactor (vars, new double[] { 1, 2, 3, 4}); TableFactor ptl2 = (TableFactor) ptl.marginalizeOut (vars[0]); 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[] { 4, 6 }; assertTrue ("FAILURE: Potential has incorrect values. Expected "+ArrayUtils.toString (expected)+"was "+ptl2, Maths.almostEquals (ptl2.toValueArray (), expected, 1e-5)); }
public void testMultiplyAll () { for (int rep = 0; rep < 100; rep++) { Universe.resetUniverse(); Variable v1 = new Variable (2); Variable v2 = new Variable (2); Variable[] vars = new Variable[] { v1, v2 }; double[] vals = new double[] { 2.0, 4.0, 6.0, 8.0 }; double[] vals2 = new double [] { 0.5, 0.5, 0.5, 0.5 }; double[] vals3 = new double [] { 1, 2, 3, 4,}; TableFactor ans = new TableFactor (vars, vals3); TableFactor ptl1 = new TableFactor (vars, vals); TableFactor ptl2 = new TableFactor (vars, vals2); Factor ptl3 = TableFactor.multiplyAll (new Factor[] { ptl1, ptl2 }); VarSet vs = ptl3.varSet (); for (int i = 0; i < vars.length; i++) { assertEquals (vars[i], vs.get (i)); } assertTrue (ans.almostEquals (ptl3)); } }
public void testMultiplyAll () { for (int rep = 0; rep < 100; rep++) { Universe.resetUniverse(); Variable v1 = new Variable (2); Variable v2 = new Variable (2); Variable[] vars = new Variable[] { v1, v2 }; double[] vals = new double[] { 2.0, 4.0, 6.0, 8.0 }; double[] vals2 = new double [] { 0.5, 0.5, 0.5, 0.5 }; double[] vals3 = new double [] { 1, 2, 3, 4,}; TableFactor ans = new TableFactor (vars, vals3); TableFactor ptl1 = new TableFactor (vars, vals); TableFactor ptl2 = new TableFactor (vars, vals2); Factor ptl3 = TableFactor.multiplyAll (new Factor[] { ptl1, ptl2 }); VarSet vs = ptl3.varSet (); for (int i = 0; i < vars.length; i++) { assertEquals (vars[i], vs.get (i)); } assertTrue (ans.almostEquals (ptl3)); } }