<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd"> <pkgmetadata> <maintainer type="project"> <email>sci@gentoo.org</email> <name>Gentoo Science Project</name> </maintainer> <longdescription lang="en"> The COLumn Approximate Minimum Degree ordering algorithm computes a permutation vector P such that the LU factorization of A (:,P) tends to be sparser than that of A. The Cholesky factorization of (A (:,P))\'*(A (:,P)) will also tend to be sparser than that of A\'*A. SYMAMD is a symmetric minimum degree ordering method based on COLAMD, available as a MATLAB-callable function. It constructs a matrix M such that M\'*M has the same pattern as A, and then uses COLAMD to compute a column ordering of M. </longdescription> </pkgmetadata>