Error when running patternnet example code from Help documentation

Question

Robert McKellar 2014-10-13

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https://ww2.mathworks.cn/matlabcentral/answers/158439-error-when-running-patternnet-example-code-from-help-documentation

评论： Sunin Kingdom 2018-8-1

I am attempting to run the example code from the Help documentation for function patternnet:

[x,t] = iris_dataset;
net = patternnet(10);
net = train(net,x,t);
view(net)
y = net(x);
perf = perform(net,t,y);
classes = vec2ind(y);

I get an error in the command window when when I try to run patternnet(10):

Error using boiler_transfer (line 98)
Unrecognized code: 'defaultParam'
Error in softmax (line 75)
boiler_transfer
Error in network/subsasgn>getDefaultParam (line 2048)
    param = struct(feval(fcn,'defaultParam'));
Error in network/subsasgn>setLayerTransferFcn (line 1224)
net.layers{i}.transferParam = getDefaultParam(transferFcn);
Error in network/subsasgn>network_subsasgn (line 208)
        if isempty(err), [net,err] = setLayerTransferFcn(net,i,transferFcn); end
Error in network/subsasgn (line 13)
net = network_subsasgn(net,subscripts,v,netname);
Error in patternnet>create_network (line 104)
  net.layers{net.numLayers}.transferFcn = 'softmax';
Error in patternnet (line 71)
    net = create_network(param);

Can anyone shed some light on what is going wrong? I am running Matlab 2014a.

Regards

Bob

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Answer 1

Siddharth Sundar 2014-10-14

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https://ww2.mathworks.cn/matlabcentral/answers/158439-error-when-running-patternnet-example-code-from-help-documentation#answer_155155

编辑：Siddharth Sundar 2014-10-14

在 MATLAB Online 中打开

From the error, it looks like you could have another function softmax that shadows the one shipped with the product. So you might want to try the which command:

which -all softmax

If this lists more than the softmax at the location 'toolbox\nnet\nnet\nntransfer\softmax.m', you might want to remove the other softmax.m from your path before using the patternnet function.

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Jason Potas 2016-11-22

Awesome thanks, that was also my issue; a deep learning toolbox also had a softmax function in a different path, so by removing it from the set paths it now works fine.

Sunin Kingdom 2018-8-1