0 个投票

Hallo,
Can anyone explain why 'sim' command in neural network is not working in Matlab version 2015 and above? After training the network, I wanted to simulate the values to predict the accuracy of the network. I used the command :
y=sim(net,p); where y is the simulated values matrix of the input matrix p
When i try to do the same using the neural network toolbox, I was able to simulate the values but not able to use 'sim' as objective function for the subsequent optimization methods.
Regards, Bharath

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Greg Heath
Greg Heath 2016-3-13

1 个投票

Replace
train( net, p, t )
with reasonable variations of
[ net tr y e ] = train( net, p, t );
where y = net( x ) and e = t-y
Hope this helps.
Thank you for formally accepting my answer

更多回答（2 个）

Greg Heath
Greg Heath 2016-3-11

0 个投票

You cannot use the names of MATLAB commands or functions for your own use. They are RESERVED.
Any of the commands
lookfor sim
help sim
doc sim
which sim
would have indicated a reserved name.
By the way, as you can gather from the help or doc documentation on fitnet, patternnet, etc the command y = sim(net,x) has been replaced by y = net(x). SIM is now used w.r.t. SIMULINK.
Hope this helps.
Thank you for formally accepting my answer
Greg

0 个投票

Hi Greg,
I appreciate your answer. And I was not using the Matlab commands for my own use. Please check the command for simulating the neural network in pre-Matlab2015 versions. I have attached the picture containing the result ( which is an empty matrix) when i used both sim(net,x) and net(x).
Looking for an answer,
Bharath

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Steven Lord
Steven Lord 2016-3-11
Type this command at the Trial>> prompt and show the output.
net
Greg Heath
Greg Heath 2016-3-11
编辑：Walter Roberson 2016-3-14
Your attachment is unreadable. Just cut and paste the code. Greg
NEVER MIND: CTRL + DID THE JOB!

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