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Attivo dal 2013

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Parameters of Neural Network estimation methods in Matlab
Which method is usually used in matlab to estimate the net parameters? It is the maximum likelihood estimation or the Least Squa...

circa 8 anni fa | 1 risposta | 0

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Domanda

How can I improve the performance prediction of a net in extrapolation
Training data are in [minTrain maxTrain], test data are in [minTest maxTest] such as 30% (for instance) of the data are outside ...

circa 8 anni fa | 1 risposta | 0

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Domanda

It is possible to create a dynamic model using radial basis function in the matlab tool box?
I want to create a net that uses radial basis function in a NARX model: inputs contain delays and feed back. Something like this...

circa 8 anni fa | 3 risposte | 0

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Weight decay parameter and Jacobian matrix of a neural network
Thank you. It helps to determine alpha but not to calculate the neural network jacobian matrix. Hope that future Matlab NN tool ...

circa 9 anni fa | 0

Domanda

Weight decay parameter and Jacobian matrix of a neural network
I want calculate prediction intervals so I have 2 direct questions: # How can I get the weight decay parameter 'alpha' (mse+...

circa 9 anni fa | 2 risposte | 0

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Domanda

Neural network inputs and Outputs with different time delay
It is possible to configure and train a NN with diffrent time delays in the MATLAB neural network tool box such as: Y(t)=F(x...

circa 9 anni fa | 3 risposte | 0

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NARX model training in the Neural Network Tool Box
Thank you Greg. So, when I use this code : net = narxnet(inputDelays,feedbackDelays,hiddenLayerSize); [net,tr] = tra...

circa 9 anni fa | 0

Domanda

NARX model training in the Neural Network Tool Box
I have Two questions concerning NARX neural network model when training is done using the early stopping technique: # It is t...

circa 9 anni fa | 3 risposte | 0

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Domanda

Neural Networks are universal approximators, It is true for picewise continuous functions?
George Cybenko had prouven that NN are universal approximators for continuous functions (see http://en.wikipedia.org/wiki/Unive...

oltre 9 anni fa | 1 risposta | 0

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Domanda

Bad results in modeling systems, with more than 1 Input, using neural network!
I'm getting started with the NN tool box for modeling systems with time delays so I started with an example which goal is to ide...

oltre 9 anni fa | 1 risposta | 0

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Domanda

How can I normalize data between 0 and 1 ? I want to use logsig...
All is in the question: I want to use logsig as a transfer function for the hidden neurones so I have to normalize data between ...

oltre 9 anni fa | 5 risposte | 1

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Domanda

Matlab Neural Network program error
My goal is to optimize my NN for a fiting problem. So I want to test several number of neurons in the hidden layer and repeat t...

oltre 9 anni fa | 3 risposte | 1

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Domanda

How can I simulate a NARX neural network after being trained and tested?
Hi, Using the NN tool box (MATLAB R2012b), I trained a NARX NN with data vectors X for input and Y for output. Now I would to...

oltre 9 anni fa | 2 risposte | 0

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