/// <summary>
/// Initializes a new instance of the <see cref="MatrixByRow"/> class.
/// </summary>
/// <param name="matrix">The matrix to represent.</param>
public MatrixByRow(TensorNode matrix)
{
Height = matrix.GetDimensionSize(2);
Width = matrix.GetDimensionSize(1);
_rows = new MatrixRow[Height];
for (int i = 0; i < Height; i++)
{
_rows[i] = new MatrixRow(matrix, i);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="MatrixRow"/> class.
/// </summary>
/// <param name="matrix">The matrix it's a row off.</param>
/// <param name="row">The row of the matrix represented.</param>
public MatrixRow(TensorNode matrix, int row)
{
int width = matrix.GetDimensionSize(1);
_values = new ExpNode[width];
for (int i = 0; i < width; i++)
{
_values[i] = matrix.GetChildD(row, i);
}
}
/// <summary>
/// Checks if two <see cref="TensorNode"/>s can matrix multiply.
/// </summary>
/// <param name="node">The first <see cref="TensorNode"/>.</param>
/// <param name="other">The second <see cref="TensorNode"/>.</param>
/// <returns>True if the Tensors can multiply as matricies.</returns>
public static bool CanMatrixMultiply(this TensorNode node, TensorNode other)
{
// Ensure both TensorNodes are matricies
if (node.TensorType != TensorType.Matrix)
{
return(false);
}
if (other.TensorType != TensorType.Matrix)
{
return(false);
}
// Ensure node's last dimension is the size of other's first dimension
return(node.GetDimensionSize(2) == other.GetDimensionSize(1));
}