public void QuadraticTest()
{
var actual = new Matrix(4, 1);
var expected = new Matrix(4, 1);
actual.InRandomize();
expected.InRandomize();
var autoErr = new QuadraticCost().Evaluate(actual, expected);
var error = 0.0;
for (var i = 0; i < actual.Rows; i++)
{
for (var j = 0; j < actual.Columns; j++)
{
error += Math.Pow(actual[i, j] - expected[i, j], 2);
}
}
error /= 2;
error /= actual.Rows * actual.Columns;
Assert.IsTrue(Math.Abs(error - autoErr) < 0.01, new QuadraticCost().Type().ToString() + " Forward!");
var autoDErr = new QuadraticCost().Backward(actual, expected);
var dErr = new Matrix(actual.Rows, actual.Columns);
for (var i = 0; i < actual.Rows; i++)
{
for (var j = 0; j < actual.Columns; j++)
{
dErr[i, j] = Math.Pow(expected[i, j] - actual[i, j], 2);
}
}
dErr *= 1.0 / actual.Rows * actual.Columns;
Assert.IsTrue(Math.Abs(dErr.FrobeniusNorm() - autoDErr.FrobeniusNorm()) < 0.01, new QuadraticCost().Type().ToString() + " Backward!");
}
public void SetUp()
{
_sut = new QuadraticCost();
}
public void InitNetwork(ECostType costType, CostSettings costSettings, EOptimizerType optimizerType, OptimizerSettings optimizerSettings)
{
Utility.Dims InShape;
Utility.Dims OutShape;
Utility.Dims WShape;
for (int i = 1; i < Layers.Count; i++)
{
Data.Data["a" + i.ToString()] = new Matrix(Layers[i].NCount, 1);
InShape = new Utility.Dims(Layers[i].NCount, 1);
Data.Data["b" + i.ToString()] = Matrix.RandomMatrix(Layers[i].NCount, 1, 1, EDistrubution.Gaussian);
OutShape = new Utility.Dims(Layers[i].NCount, 1);
Data.Data["W" + i.ToString()] = Matrix.RandomMatrix(Layers[i - 1].NCount, Layers[i].NCount, 1, EDistrubution.Gaussian);
WShape = new Utility.Dims(Layers[i - 1].NCount, Layers[i].NCount);
Layers[i].SetSettings(new LayerSettings(InShape, OutShape, WShape));
}
Data.Data["a0"] = new Matrix(Layers[0].NCount, 1);
InShape = new Utility.Dims(Layers[0].NCount, 1);
Data.Data["b0"] = new Matrix(Layers[0].NCount, 1);
OutShape = new Utility.Dims(Layers[0].NCount, 1);
Data.Data["W0"] = new Matrix(Layers[0].NCount * Layers[1].NCount, Layers[1].NCount);
WShape = new Utility.Dims(Layers[0].NCount * Layers[1].NCount, Layers[1].NCount);
Layers[0].SetSettings(new LayerSettings(InShape, OutShape, WShape));
switch (costType)
{
case ECostType.Invalid:
throw new ArgumentException("Invalid Cost Function Selected!");
case ECostType.CrossEntropyCost:
CostFunction = new CrossEntropyCost((CrossEntropyCostSettings)costSettings);
break;
case ECostType.ExponentionalCost:
CostFunction = new ExponentionalCost((ExponentionalCostSettings)costSettings);
break;
case ECostType.GeneralizedKullbackLeiblerDivergence:
CostFunction = new GeneralizedKullbackLeiblerDivergence((GeneralizedKullbackLeiblerDivergenceSettings)costSettings);
break;
case ECostType.HellingerDistance:
CostFunction = new HellingerDistance((HellingerDistanceSettings)costSettings);
break;
case ECostType.ItakuraSaitoDistance:
CostFunction = new ItakuraSaitoDistance((ItakuraSaitoDistanceSettings)costSettings);
break;
case ECostType.KullbackLeiblerDivergence:
CostFunction = new KullbackLeiblerDivergence((KullbackLeiblerDivergenceSettings)costSettings);
break;
case ECostType.QuadraticCost:
CostFunction = new QuadraticCost((QuadraticCostSettings)costSettings);
break;
default:
throw new ArgumentException("Invalid Cost Function Selected!");
}
switch (optimizerType)
{
case EOptimizerType.Invalid:
throw new ArgumentException("Invalid Optimizer Function Selected!");
case EOptimizerType.AdaDelta:
OptimizerFunction = new AdaDelta((AdaDeltaSettings)optimizerSettings);
break;
case EOptimizerType.AdaGrad:
OptimizerFunction = new AdaGrad((AdaGradSettings)optimizerSettings);
break;
case EOptimizerType.Adam:
OptimizerFunction = new Adam((AdamSettings)optimizerSettings);
break;
case EOptimizerType.Adamax:
OptimizerFunction = new Adamax((AdamaxSettings)optimizerSettings);
break;
case EOptimizerType.GradientDescent:
OptimizerFunction = new GradientDescent((GradientDescentSettings)optimizerSettings);
break;
case EOptimizerType.Momentum:
OptimizerFunction = new Momentum((MomentumSettings)optimizerSettings);
break;
case EOptimizerType.Nadam:
OptimizerFunction = new Nadam((NadamSettings)optimizerSettings);
break;
case EOptimizerType.NesterovMomentum:
OptimizerFunction = new NesterovMomentum((NesterovMomentumSettings)optimizerSettings);
break;
case EOptimizerType.RMSProp:
OptimizerFunction = new RMSProp((RMSPropSettings)optimizerSettings);
break;
default:
throw new ArgumentException("Invalid Optimizer Function Selected!");
}
}
