62 lines
1.3 KiB
Objective-C
Executable File
62 lines
1.3 KiB
Objective-C
Executable File
## Copyright (C) 2018 Jens Ahrensfeld
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##
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## This program is free software; you can redistribute it and/or modify it
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## under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 3 of the License, or
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## (at your option) any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program. If not, see <http://www.gnu.org/licenses/>.
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## -*- texinfo -*-
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## @deftypefn {Function File} {@var{retval} =} stdp_eval (@var{input1}, @var{input2})
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##
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## @seealso{}
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## @end deftypefn
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## Author: Jens Ahrensfeld <ahrensfeld@w2ess001vm>
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## Created: 2018-01-17
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function stdp_eval ()
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N = 8;
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Vp = zeros(N,1);
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W = rand(N, 1)
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K = 100;
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alpha = 0.5;
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beta = 0.5;
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thresh = 2.0;
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kn = 0.01;
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mu = 0.01;
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Vf = 0;
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for k=1:K,
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Vin = rand(N,1) > 0.8;
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Vp = max(alpha*Vp, Vin);
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V = sum(W.*Vp);
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n = kn*(2.0 * (0.5 - rand()));
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fire = ((V+n) >= thresh);
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Vf = max(beta*Vf, fire);
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W = W + mu*Vp*Vf;
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_V(k) = V;
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_Vin(:, k) = Vin;
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_fire(k) = fire;
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end
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plot(1:K, _V, 1:K, _fire); grid;
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endfunction
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