Looks great. If you aren't careful, you will turn into a regular contributor!
On Sun, Feb 3, 2013 at 12:46 PM, Ceyhun Can ÜLKER <[email protected]>wrote: > Hello again, > > This is my first bug report experience. :) I hope I did it right and it > helps. > > Here is the link to issue I have created: > https://issues.apache.org/jira/browse/MAHOUT-1146 > > Ceyhun Can Ülker > > On Sun, Feb 3, 2013 at 9:50 PM, Ted Dunning <[email protected]> wrote: > > > Ouch. This is a fine place to start the conversation. > > > > Can you put exactly your message below into a bug report on JIRA at > > https://issues.apache.org/jira/browse/MAHOUT ? > > > > That will help us track this apparent bug. > > > > On Sun, Feb 3, 2013 at 11:22 AM, Ceyhun Can ÜLKER <[email protected] > > >wrote: > > > > > 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 > > > > > >
