public void ForwardBackwardTest()
{
var data = new double[]
{
3, 2, 1, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 3, 9, 5
};
var input = new TensorOld(data, 1, 1, 4, 4);
var pooling = new MaxPooling(2);
pooling.PrepareTrain(input);
var forward = pooling.Forward(input);
var expected = new TensorOld(new double[]
{
4, 6,
8, 9
}, 1, 1, 2, 2);
Assert.Equal(expected, forward);
var error = new TensorOld(new double[]
{
0.5, 0.7,
-0.3, 1.2
}, 1, 1, 2, 2);
var backward = pooling.Backward(error);
var backExpected = new TensorOld(new double[]
{
0, 0, 0, 0,
0.5, 0, 0.7, 0,
-0.3, 0, 0, 0,
0, 0, 1.2, 0
}, 1, 1, 4, 4);
Assert.Equal(backExpected, backward);
}
public void ForwardBackwardTest3()
{
var data = new double[]
{
3, 2, 1, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 3, 9, 5,
3, 2, 1, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 3, 9, 5,
3, 2, 1, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 3, 9, 5,
3, 2, 1, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 3, 9, 5,
3, 2, 1, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 3, 9, 5,
3, 2, 1, 5,
4, 2, 6, 1,
8, 2, 6, 3,
6, 3, 9, 5,
};
var input = new TensorOld(data, 2, 3, 4, 4);
var pooling = new MaxPooling(1, 3, 1, 3);
pooling.PrepareTrain(input);
var actual = pooling.Forward(input);
var expected = new TensorOld(new double[]
{
3, 6, 8, 9,
3, 6, 8, 9,
3, 6, 8, 9,
3, 6, 8, 9,
3, 6, 8, 9,
3, 6, 8, 9,
}, 2, 3, 4, 1);
Assert.Equal(expected, actual);
var error = new TensorOld(new double[]
{
0.8, 0.7, -1.5, 0.4,
0.8, 0.7, -1.5, 0.4,
0.8, 0.7, -1.5, 0.4,
0.8, 0.7, -1.5, 0.4,
0.8, 0.7, -1.5, 0.4,
0.8, 0.7, -1.5, 0.4,
}, 2, 3, 4, 1);
var backward = pooling.Backward(error);
var backData = new double[]
{
0.8, 0, 0, 0,
0, 0, 0.7, 0,
-1.5, 0, 0, 0,
0, 0, 0.4, 0,
0.8, 0, 0, 0,
0, 0, 0.7, 0,
-1.5, 0, 0, 0,
0, 0, 0.4, 0,
0.8, 0, 0, 0,
0, 0, 0.7, 0,
-1.5, 0, 0, 0,
0, 0, 0.4, 0,
0.8, 0, 0, 0,
0, 0, 0.7, 0,
-1.5, 0, 0, 0,
0, 0, 0.4, 0,
0.8, 0, 0, 0,
0, 0, 0.7, 0,
-1.5, 0, 0, 0,
0, 0, 0.4, 0,
0.8, 0, 0, 0,
0, 0, 0.7, 0,
-1.5, 0, 0, 0,
0, 0, 0.4, 0,
};
var backExpected = new TensorOld(backData, 2, 3, 4, 4);
Assert.Equal(backExpected, backward);
}