self-organizing map plotting help
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mouh nyquist
il 3 Gen 2015
Commentato: mouh nyquist
il 27 Gen 2015
I have tried two years to plot Som map (self-organizing map);but I can't do it with matlab
this is my program (I want plot the position of the input [1 0] in the map) please help me
I have read help plotsom, doc , nothing to do this
p1=[1 1]'; p2=[1 2]'; p3=[2 -1]'; p4=[2 -2]'; p5=[-1 2]'; p6=[-2 1]'; p7=[-1 -1]'; p8=[-2 -2]';
P=[p1 p2 p3 p4 p5 p6 p7 p8];
% Create a Self-Organizing Map
dimension1 = 10;
dimension2 = 10;
net = selforgmap([dimension1 dimension2]);
% Train the Network
[net,tr] = train(net,P);
% Test the Network
outputs = net(P);
% View the Network
view(net)
%test
A=sim(net,[1 0]);
%plot Som map
axis([0 10 0 10]);
%hold on; plotting A in the Map
circles = plot(A,'ob');
3 Commenti
Geoff Hayes
il 16 Gen 2015
Mouh - I think that you need to provide more details. What do you mean when you say that you can't do it with matlab? Are you observing errors (and if so, what are they) or are you just not getting the results that you desire?
Risposta accettata
Greg Heath
il 18 Gen 2015
>> szout = size(outputs) % [ 100 8 ]
uniqueout = unique(outputs) % [ 0 1 ]
szout =
100 8
uniqueout =
0
1
>> findones = find(outputs == 1)
findones =
7
103
221
341
405
523
611
701
These can be converted to the positions of the training data in the 10 x 10 matrix.
similarly,
>> size(net([ 1 0]))
ans =
100 2
You can calculate the position .
However, I cannot make any sense of most of the plotsom routines.
Sorry,
Greg
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