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nbrfun.m
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nbrfun.m
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function h=nbrfun(netset,ds,ep)
% neighbor function
% Directed Batch Growing Self Organizing Map (DBGSOM)
% version 1.0 - July 2017
% Mahdi Vasighi
% Institute for Advanced Studies in Basic Sciences, Zanjan, Iran
% Department of Computer Science and Information Technology
% www.iasbs.ac.ir/~vasighi/
% Directed Batch Growing Self Organizing Map (DBGSOM), version 1.0
% Copyright (C) 2017 Mahdi Vasighi
%
% 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
% 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/>.
lr=netset.lrvec(ep);
% l = netset.pvec(ep)-ds;
% l(l<0)=0;
% l(l>=0)=1;
% h = lr.*exp(-(ds.^2)/(2*netset.pvec(ep)^2)).*l;
nbr=(1-(ds./(netset.pvec(ep)+1)));
nbr(nbr<0)=0;
h = lr.*nbr;