public void ComputeTwiceGradientShouldYieldTheSameResult()
{
const int inputWidth = 20;
const int inputHeight = 20;
const int inputDepth = 2;
var layer = new ReluLayer();
layer.Init(inputWidth, inputHeight, inputDepth);
// Forward pass
var input = BuilderInstance.Volume.Random(new Shape(inputWidth, inputHeight, inputDepth));
var output = layer.DoForward(input, true);
// Set output gradients to 1
var outputGradient = BuilderInstance.Volume.SameAs(new double[output.Shape.TotalLength].Populate(1.0), output.Shape);
// Backward pass to retrieve gradients
layer.Backward(outputGradient);
var step1 = ((Volume.Double.Volume)layer.InputActivationGradients.Clone()).ToArray();
layer.Backward(outputGradient);
var step2 = ((Volume.Double.Volume)layer.InputActivationGradients.Clone()).ToArray();
Assert.IsTrue(step1.SequenceEqual(step2));
}
public void SerializationTest()
{
// Create a ReluLayer
var layer = new ReluLayer();
layer.Init(10, 10, 3);
using (var ms = new MemoryStream())
{
// Serialize
IFormatter formatter = new BinaryFormatter();
formatter.Serialize(ms, layer);
// Deserialize
ms.Position = 0;
var result = formatter.Deserialize(ms) as ReluLayer;
Assert.AreEqual(layer.InputDepth, result.InputDepth);
Assert.AreEqual(layer.InputHeight, result.InputHeight);
Assert.AreEqual(layer.InputWidth, result.InputWidth);
Assert.AreEqual(layer.OutputDepth, result.OutputDepth);
Assert.AreEqual(layer.OutputHeight, result.OutputHeight);
Assert.AreEqual(layer.OutputWidth, result.OutputWidth);
}
}
public void Instantiation()
{
const int inputWidth = 20;
const int inputHeight = 20;
const int inputDepth = 2;
var layer = new ReluLayer();
layer.Init(inputWidth, inputHeight, inputDepth);
Assert.AreEqual(20, layer.OutputWidth);
Assert.AreEqual(20, layer.OutputHeight);
Assert.AreEqual(2, layer.OutputDepth);
}
public void ReluLayerSerialization()
{
var layer = new ReluLayer();
layer.Init(28, 24, 1);
var data = layer.GetData();
Assert.AreEqual(28, data["InputWidth"]);
Assert.AreEqual(24, data["InputHeight"]);
Assert.AreEqual(1, data["InputDepth"]);
var deserialized = LayerBase <double> .FromData(data) as ReluLayer;
Assert.IsNotNull(deserialized);
Assert.AreEqual(28, deserialized.InputWidth);
Assert.AreEqual(24, deserialized.InputHeight);
Assert.AreEqual(1, deserialized.InputDepth);
Assert.AreEqual(layer.OutputWidth, deserialized.OutputWidth);
Assert.AreEqual(layer.OutputHeight, deserialized.OutputHeight);
Assert.AreEqual(layer.OutputDepth, deserialized.OutputDepth);
}
