public void CanBroadcast_3_to_2_3()
{
// http://www.onlamp.com/pub/a/python/2000/09/27/numerically.html?page=2
/*
*
* a = np.array([[1, 2, 3], [4, 5, 6]])
* b = np.array([[7, 8, 9]])
* a + b
*
*/
var a = NN.Array(new[, ] {
{ 1, 2, 3 }, { 4, 5, 6 }
});
var c = NN.Array(new[] { 7, 8, 9 });
var rAdd = NN.Array(new[, ] {
{ 8, 10, 12 }, { 11, 13, 15 }
});
var rMul = NN.Array(new[, ] {
{ 7, 16, 27 }, { 28, 40, 54 }
});
a.AssertOfShape(2, 3);
c.AssertOfShape(3);
AssertArray.GenerateTests(a, c, NN.Ones <int>, (a1, c1) => AssertArray.AreEqual(rAdd, a1 + c1));
AssertArray.GenerateTests(a, c, NN.Zeros <int>, (a1, c1) => AssertArray.AreEqual(rMul, a1 * c1));
}
public void CanReshape_6_to_2_3_WithForcedCopy()
{
var a0 = NN.Range(6);
var b = NN.Array(new[, ] {
{ 0, 1, 2 },
{ 3, 4, 5 }
});
AssertArray.GenerateTests(a0, a => AssertArray.AreEqual(b, a.Reshape(new[] { 2, 3 }, forceCopy: true)));
}
public void CanReshape_6_to_2_3()
{
var a0 = NN.Range(6);
var b = NN.Array(new[, ] {
{ 0, 1, 2 },
{ 3, 4, 5 }
});
AssertArray.GenerateTests(a0, a => AssertArray.AreEqual(b, a.Reshape(2, 3)));
}
public void CanBroadcastScalarToArray()
{
// http://www.onlamp.com/pub/a/python/2000/09/27/numerically.html
/*
*
* a = np.array([[1,2],[3, 4]])
* b = 1
* a + b
*
*/
var a = NN.Array(new[, ] {
{ 1, 2 }, { 3, 4 }
});
var b = 1;
var r = NN.Array(new[, ] {
{ 2, 3 }, { 4, 5 }
});
AssertArray.GenerateTests(a, NN.Ones <int>, a1 => AssertArray.AreEqual(r, a1 + b));
}
public void TestGenerateMat()
{
var a = NN.Range<float>(12).Reshape(4, 3);
var c = a.Copy();
AssertArray.GenerateTests(a, b => AssertArray.AreAlmostEqual(c, b));
}
public void TestGenerateVec()
{
var a = NN.Range<float>(5);
var c = a.Copy();
AssertArray.GenerateTests(a, b => AssertArray.AreAlmostEqual(c, b));
}
