I guess it doesn't matter, but typical n are 1...1000. However, I need to call the operation hundreds or thousands times (while running NLP solver ralg, so 4..5 * nIter times). Number of zeros can be 0...n-1
Charles R Harris wrote: > How big is n? > > On Dec 14, 2007 1:24 AM, dmitrey <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Hi all, > I have to get Ax, A is n x n matrix, x is vector of length n. > Some coords of x are zeros, so I want to economy time/cputime somehow > w/o connecting sparse module from scipy. > What's the easiest way to do so? > > Thx, D. > _______________________________________________ > Numpy-discussion mailing list > [email protected] <mailto:[email protected]> > http://projects.scipy.org/mailman/listinfo/numpy-discussion > > > ------------------------------------------------------------------------ > > _______________________________________________ > Numpy-discussion mailing list > [email protected] > http://projects.scipy.org/mailman/listinfo/numpy-discussion > _______________________________________________ Numpy-discussion mailing list [email protected] http://projects.scipy.org/mailman/listinfo/numpy-discussion
