public virtual void TestElementwiseDenseToSparse(double[] dense1, int sparseIndex, double v)
{
Assume.AssumeTrue(sparseIndex >= 0);
Assume.AssumeTrue(sparseIndex <= 100);
ConcatVector v1 = new ConcatVector(1);
v1.SetDenseComponent(0, dense1);
ConcatVector v2 = new ConcatVector(1);
v2.SetSparseComponent(0, (int)sparseIndex, v);
v2.ElementwiseProductInPlace(v1);
for (int i = 0; i < dense1.Length; i++)
{
double expected = 0.0f;
if (i == sparseIndex)
{
expected = dense1[i] * v;
}
NUnit.Framework.Assert.AreEqual(v2.GetValueAt(0, i), 5.0e-4, expected);
}
}
public override ConcatVector[][][] Generate(SourceOfRandomness sourceOfRandomness, IGenerationStatus generationStatus)
{
int l = sourceOfRandomness.NextInt(10) + 1;
int m = sourceOfRandomness.NextInt(10) + 1;
int n = sourceOfRandomness.NextInt(10) + 1;
ConcatVector[][][] factor3 = new ConcatVector[l][][];
for (int i = 0; i < factor3.Length; i++)
{
for (int j = 0; j < factor3[0].Length; j++)
{
for (int k = 0; k < factor3[0][0].Length; k++)
{
int numComponents = sourceOfRandomness.NextInt(7);
ConcatVector v = new ConcatVector(numComponents);
for (int x = 0; x < numComponents; x++)
{
if (sourceOfRandomness.NextBoolean())
{
v.SetSparseComponent(x, sourceOfRandomness.NextInt(32), sourceOfRandomness.NextDouble());
}
else
{
double[] val = new double[sourceOfRandomness.NextInt(12)];
for (int y = 0; y < val.Length; y++)
{
val[y] = sourceOfRandomness.NextDouble();
}
v.SetDenseComponent(x, val);
}
}
factor3[i][j][k] = v;
}
}
}
return(factor3);
}
/// <summary>
/// This adds a sparse feature to a vector, setting the appropriate component of the given vector to the passed in
/// value.
/// </summary>
/// <param name="vector">the vector</param>
/// <param name="featureName">the feature whose value to set</param>
/// <param name="index">the index of the one-hot vector to set, as a string, which we will translate into a mapping</param>
/// <param name="value">the value we want to set this one-hot index to</param>
public virtual void SetSparseFeature(ConcatVector vector, string featureName, string index, double value)
{
vector.SetSparseComponent(EnsureFeature(featureName), EnsureSparseFeature(featureName, index), value);
}