S-IFISS extends the IFISS package to cover stochastic Galerkin approximation of diffusion problems with random coefficients. The underlying theory is discussed in the following paper.

A. Bespalov, C.E. Powell & D.J. Silvester, "Energy norm a posteriori error estimation for parametric operator equations," SIAM J. on Scientific Computing, vol. 36, A339-A363, 2014. DOI 10.1137/130916849

Having installed a Matlab or an Octave version of the IFISS package, the S-IFISS directory can be downloaded by clicking on the link below.

To install the S-IFISS package, simply move the stoch_diffusion directory to make it an IFISS subdirectory and then type "install_sifiss" (in Matlab) or "octave_sifiss" (in Octave). The S-IFISS installation has been tested using Matlab version 9.1 and Octave version 4.0.3.
Further information is contained in the S-IFISS Software and Installation Guide

Licence Information

This library is free software. It can be redistributed and/or modified under the terms of the GNU Lesser General Public License as published by the Free Software Foundation ; either version 2.1 of the License, or any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY, and without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. Your use or distribution of IFISS or any derivative code implies that you agree to this License.

Copyright (c) 2019 by David Silvester, Alex Bespalov, Catherine Powell.