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git-svn-id: http://moon:8086/svn/matlab/trunk@99 801c6759-fa7c-4059-a304-17956f83a07c
2018-08-30 18:06:49 +00:00
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+## Copyright (C) 2018 Jens Ahrensfeld
+## 
+## 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 3 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, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*- 
+## @deftypefn {Function File} {@var{retval} =} stdp_eval (@var{input1}, @var{input2})
+##
+## @seealso{}
+## @end deftypefn
+
+## Author: Jens Ahrensfeld <ahrensfeld@w2ess001vm>
+## Created: 2018-01-17
+
+function stdp_eval ()
+
+N = 8;
+
+Vp = zeros(N,1);
+W = rand(N, 1)
+
+K = 100;
+alpha = 0.5;
+beta = 0.5;
+thresh = 2.0;
+kn = 0.01;
+mu = 0.01;
+
+Vf = 0;
+for k=1:K,
+
+	Vin = rand(N,1) > 0.8;
+	Vp = max(alpha*Vp, Vin);
+
+	V = sum(W.*Vp);
+	n = kn*(2.0 * (0.5 - rand()));
+	fire = ((V+n) >= thresh);
+	Vf = max(beta*Vf, fire);
+	
+	W = W + mu*Vp*Vf;
+	
+	
+	_V(k) = V;
+	_Vin(:, k) = Vin;
+	_fire(k) = fire;
+	
+end
+
+plot(1:K, _V, 1:K, _fire); grid;
+
+endfunction