public void ForwardBackwardTest()
{
var data = new double[]
{
3, 3, 1, 5,
4, 2, 6, 4,
8, 2, 6, 3,
6, 4, 9, 6
};
var input = new TensorOld(data, 1, 1, 4, 4);
var pooling = new MeanPooling(2);
pooling.PrepareTrain(input);
var forward = pooling.Forward(input);
var expected = new TensorOld(new double[]
{
3, 4,
5, 6
}, 1, 1, 2, 2);
Assert.Equal(expected, forward);
var error = new TensorOld(new double[]
{
0.4, 0.8,
-1.2, 1.6,
}, 1, 1, 2, 2);
var backward = pooling.Backward(error);
var backExpected = new TensorOld(new double[]
{
0.1, 0.1, 0.2, 0.2,
0.1, 0.1, 0.2, 0.2,
-0.3, -0.3, 0.4, 0.4,
-0.3, -0.3, 0.4, 0.4,
}, 1, 1, 4, 4);
Assert.Equal(backExpected, backward);
}
public void ForwardBackwardTest3()
{
var data = new double[]
{
3, 2, 3, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 5, 9, 5,
3, 2, 3, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 5, 9, 5,
3, 2, 3, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 5, 9, 5,
3, 2, 3, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 5, 9, 5,
3, 2, 3, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 5, 9, 5,
3, 2, 3, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 5, 9, 5,
};
var input = new TensorOld(data, 2, 3, 4, 4);
var pooling = new MeanPooling(1, 3, 1, 3);
pooling.PrepareTrain(input);
var actual = pooling.Forward(input);
var expected = new TensorOld(new double[]
{
2, 3, 4, 5,
2, 3, 4, 5,
2, 3, 4, 5,
2, 3, 4, 5,
2, 3, 4, 5,
2, 3, 4, 5,
}, 2, 3, 4, 1);
Assert.Equal(expected, actual);
var error = new TensorOld(new double[]
{
0.8, 0.4, -1.6, 1.2,
0.8, 0.4, -1.6, 1.2,
0.8, 0.4, -1.6, 1.2,
0.8, 0.4, -1.6, 1.2,
0.8, 0.4, -1.6, 1.2,
0.8, 0.4, -1.6, 1.2,
}, 2, 3, 4, 1);
var backward = pooling.Backward(error);
var backData = new double[]
{
0.2, 0.2, 0.2, 0,
0.1, 0.1, 0.1, 0,
-0.4, -0.4, -0.4, 0,
0.3, 0.3, 0.3, 0,
0.2, 0.2, 0.2, 0,
0.1, 0.1, 0.1, 0,
-0.4, -0.4, -0.4, 0,
0.3, 0.3, 0.3, 0,
0.2, 0.2, 0.2, 0,
0.1, 0.1, 0.1, 0,
-0.4, -0.4, -0.4, 0,
0.3, 0.3, 0.3, 0,
0.2, 0.2, 0.2, 0,
0.1, 0.1, 0.1, 0,
-0.4, -0.4, -0.4, 0,
0.3, 0.3, 0.3, 0,
0.2, 0.2, 0.2, 0,
0.1, 0.1, 0.1, 0,
-0.4, -0.4, -0.4, 0,
0.3, 0.3, 0.3, 0,
0.2, 0.2, 0.2, 0,
0.1, 0.1, 0.1, 0,
-0.4, -0.4, -0.4, 0,
0.3, 0.3, 0.3, 0,
};
var backExpected = new TensorOld(backData, 2, 3, 4, 4);
Assert.Equal(backExpected, backward);
}