--- a
+++ b/mle_obj.m
@@ -0,0 +1,65 @@
+# 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.
+# 
+# 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
+ 
+# this takes a general model and calculates average log likelihood
+function [obj_value, score] = mle_obj(theta, data, model, modelargs)
+	[obj_value, score] = feval(model, theta, data, modelargs);
+	obj_value = - mean(obj_value);
+
+	# let's bullet-proof this in case the model goes nuts
+	if (((abs(obj_value) == Inf)) || (isnan(obj_value)))
+		obj_value = realmax;
+	endif
+
+	if isnumeric(score) score = - mean(score)'; endif
+endfunction