Here is Dynare code to reproduce the simulations in IMF WP 15/134 "Avoiding Dark Corners : A Robust Monetary Policy Framework for the United States" by Ali Alichi, Kevin Clinton, Charles Freedman, Ondra Kamenik, Michel Juillad, Douglas Laxton, Jarkko Turunen and Hou Wang, 2015.
This code requires Dynare unstable version dated 07/27/2015 or more recent.
The Matlab function drivder.m calls four Dynare *.mod files, one for each specification of the model, and figures.m to draw the graphs.