--- a +++ b/gmm_obj.m @@ -0,0 +1,62 @@ +# Copyright (C) 2003,2004 Michael Creel michael.creel@uab.es +# under the terms of the GNU General Public License. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +# Copyright (C) 2003 Michael Creel michael.creel@uab.es +# under the terms of the GNU General Public License. +# The GPL license is in the file COPYING +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +# Copyright (C) 2003 Michael Creel michael.creel@uab.es +# under the terms of the GNU General Public License. +# The GPL license is in the file COPYING +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# The GMM objective function +# This is scaled so that it converges to a +# finite number. To get the chi-square specification +# test you need to multiply by n (the sample size) +function obj_value = gmm_obj(theta, data, weight, moments, momentargs) + m = average_moments(theta, data, moments, momentargs); + obj_value = m' * weight *m; + + if (((abs(obj_value) == Inf)) || (isnan(obj_value))) + obj_value = realmax; + endif + +endfunction