public override NDArrayDict CreateState(int index, NDArray weight)
{
var state = new NDArrayDict("momentum", "prev_weight");
if (Momentum == 0)
{
state["momentum"] = null;
state["prev_weight"] = weight.Copy();
}
else
{
state["momentum"] = nd.Zeros(weight.Shape, weight.Context, weight.DataType);
state["prev_weight"] = weight.Copy();
}
return(state);
}
public void TestCopy()
{
NDArray nd = new NDArray("Car", "Teddy", "Ho");
NDArray nd1 = nd.Copy();
String s = nd[1];
nd[1] = "Moo";
String s1 = nd1[1];
Assert.True(s1.Equals("Teddy"), "Arrays are not equal.");
}
public void TestDeepCopy()
{
NDArray r1 = new NDArray(0, 1, 2);
NDArray r2 = new NDArray(3, 4, 5);
NDArray r3 = new NDArray(6, 7, 8);
NDArray nd = new NDArray(r1, r2, r3);
NDArray nd1 = nd.Copy();
NDArray s = nd[1];
nd[1] = new NDArray(0, 0, 0);
NDArray s1 = nd1[1];
Assert.True(s1.Equals(new NDArray(3, 4, 5)), "Arrays are not equal.");
}
public static (NDArray, (bool, bool)) RandomFlip(NDArray src, float px = 0, float py = 0, bool copy = true)
{
var flip_y = FloatRnd.Uniform(0, 1 - py);
var flip_x = FloatRnd.Uniform(0, 1 - px);
if (flip_y > 0.5f)
{
src = nd.Flip(src, axis: 0);
}
if (flip_x > 0.5f)
{
src = nd.Flip(src, axis: 1);
}
if (copy)
{
src = src.Copy();
}
return(src, (flip_x > 0.5f, flip_y > 0.5f));
}