public static LogTableFactor makeFromLogValues (Variable v, double[] vals) { return makeFromLogValues (new Variable[]{v}, vals); }
public static LogTableFactor makeFromValues (Variable[] vars, double[] vals) { double[] vals2 = new double [vals.length]; for (int i = 0; i < vals.length; i++) { vals2[i] = Math.log (vals[i]); } return makeFromLogValues (vars, vals2); }
public static LogTableFactor makeFromValues (Variable[] vars, double[] vals) { double[] vals2 = new double [vals.length]; for (int i = 0; i < vals.length; i++) { vals2[i] = Math.log (vals[i]); } return makeFromLogValues (vars, vals2); }
public static LogTableFactor makeFromValues (Variable[] vars, double[] vals) { double[] vals2 = new double [vals.length]; for (int i = 0; i < vals.length; i++) { vals2[i] = Math.log (vals[i]); } return makeFromLogValues (vars, vals2); }
public void testNormalizeAsCptLogSpace () { double[] vals = { 0.0, 1.3862943611198906, 0.6931471805599453, 1.791759469228055 }; Variable v1 = new Variable (2); Variable v2 = new Variable (2); AbstractTableFactor ptl = LogTableFactor.makeFromLogValues(new Variable[] { v1, v2 }, vals); System.out.println (ptl); Factors.normalizeAsCpt (ptl, v1); System.out.println (ptl); comparePotentials (ptl, new double[] { 0.3333, 0.4, 0.6666, 0.6 }); // comparePotentials (ptl, new double[] { -1.098712293668443, -0.916290731874155, -0.4055651131084978, -0.5108256237659907 }); }
public void testNormalizeAsCptLogSpace () { double[] vals = { 0.0, 1.3862943611198906, 0.6931471805599453, 1.791759469228055 }; Variable v1 = new Variable (2); Variable v2 = new Variable (2); AbstractTableFactor ptl = LogTableFactor.makeFromLogValues(new Variable[] { v1, v2 }, vals); System.out.println (ptl); Factors.normalizeAsCpt (ptl, v1); System.out.println (ptl); comparePotentials (ptl, new double[] { 0.3333, 0.4, 0.6666, 0.6 }); // comparePotentials (ptl, new double[] { -1.098712293668443, -0.916290731874155, -0.4055651131084978, -0.5108256237659907 }); }
public void testPlusEquals () { Variable var = new Variable (4); // log 0, log 1, log 2, log 3 double[] vals = new double[] { Double.NEGATIVE_INFINITY, 0, 0.6931471805599453, 1.0986122886681098 }; LogTableFactor factor = LogTableFactor.makeFromLogValues (var, vals); factor.plusEquals (0.1); // log 0.1, log 1.1, log 2.1, log 3.1 double[] expected = new double[] { -2.3025850929940455, 0.09531017980432493, 0.7419373447293773, 1.1314021114911006 }; LogTableFactor ans = LogTableFactor.makeFromLogValues (var, expected); assertTrue ("Error: expected "+ans.dumpToString ()+" but was "+factor.dumpToString (), factor.almostEquals (ans)); }
public void testPlusEquals () { Variable var = new Variable (4); // log 0, log 1, log 2, log 3 double[] vals = new double[] { Double.NEGATIVE_INFINITY, 0, 0.6931471805599453, 1.0986122886681098 }; LogTableFactor factor = LogTableFactor.makeFromLogValues (var, vals); factor.plusEquals (0.1); // log 0.1, log 1.1, log 2.1, log 3.1 double[] expected = new double[] { -2.3025850929940455, 0.09531017980432493, 0.7419373447293773, 1.1314021114911006 }; LogTableFactor ans = LogTableFactor.makeFromLogValues (var, expected); assertTrue ("Error: expected "+ans.dumpToString ()+" but was "+factor.dumpToString (), factor.almostEquals (ans)); }
public void testRecenter () { Variable var = new Variable (4); double[] vals = new double[]{ 2.0, 4.0, 6.0, 8.0 }; LogTableFactor ltbl1 = LogTableFactor.makeFromValues (var, vals); ltbl1.recenter (); double[] expected = new double[] { Math.log (0.25), Math.log(0.5), Math.log (0.75), 0 }; LogTableFactor ans = LogTableFactor.makeFromLogValues (var, expected); assertTrue ("Error: expected "+ans.dumpToString ()+"but was "+ltbl1.dumpToString (), ans.almostEquals (ltbl1)); }
public void testRecenter () { Variable var = new Variable (4); double[] vals = new double[]{ 2.0, 4.0, 6.0, 8.0 }; LogTableFactor ltbl1 = LogTableFactor.makeFromValues (var, vals); ltbl1.recenter (); double[] expected = new double[] { Math.log (0.25), Math.log(0.5), Math.log (0.75), 0 }; LogTableFactor ans = LogTableFactor.makeFromLogValues (var, expected); assertTrue ("Error: expected "+ans.dumpToString ()+"but was "+ltbl1.dumpToString (), ans.almostEquals (ltbl1)); }
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 testRecenter2 () { Variable var = new Variable (4); double[] vals = new double[]{ 0, 1.4, 1.4, 0 }; LogTableFactor ltbl1 = LogTableFactor.makeFromLogValues (var, vals); ltbl1.recenter (); double[] expected = new double[]{ -1.4, 0, 0, -1.4 }; LogTableFactor ans = LogTableFactor.makeFromLogValues (var, expected); assertTrue (!ltbl1.isNaN ()); assertTrue ("Error: expected "+ans.dumpToString ()+"but was "+ltbl1.dumpToString (), ans.almostEquals (ltbl1)); }
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); }
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 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 ()); }
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); }