Hello,
I don't know if this is the right place to post, but here I go. Actually
this bug is probably about the viewColumn method, or matrixLike method or
MatrixVectorView constructor, I didn't really looked into it. But it is
easy to reproduce.
I have a dense matrix U of size 10x670. When I try to do this I get a
cardinality exception, which doesn't make sense:
Vector uI = U.viewColumn(i);
Matrix outerProduct = uI.cross(uI);
Exception is thrown from AbstractMatrix class' cross method, when a row is
tried to be assigned in the result matrix.
public Matrix cross(Vector other) {
Matrix result = matrixLike(size, other.size());
for (int row = 0; row < size; row++) {
result.assignRow(row, other.times(getQuick(row)));
}
return result;
}
The problem here is matrixLike method does not return a 10x10 matrix as it
should, instead it returns 1x1 matrix.
Hope this helps.
Ceyhun Can Ülker
