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Question

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...

9 years ago | 1 answer | 0

### 1

answerQuestion

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 ...

9 years ago | 1 answer | 0

### 1

answerQuestion

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...

9 years ago | 3 answers | 0

### 3

answersWeight 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 ...

10 years ago | 0

Question

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+...

10 years ago | 2 answers | 0

### 2

answersQuestion

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...

11 years ago | 3 answers | 0

### 3

answersNARX 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...

11 years ago | 0

Question

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...

11 years ago | 3 answers | 0

### 3

answersQuestion

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...

11 years ago | 1 answer | 0

### 1

answerQuestion

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...

11 years ago | 1 answer | 0

### 1

answerQuestion

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 ...

11 years ago | 5 answers | 1

### 5

answersQuestion

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...

11 years ago | 3 answers | 1

### 3

answersQuestion

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...

11 years ago | 2 answers | 0