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How can I plot only the traning set in plotperform(tr) figure in MATLAB.
>> type plotperform It looks very difficult to modify plotperform. I would just write a few lines of code to produce a sep...

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RBF newrbe algorithm uses k-means and inverse matrix?
No. NEWRBE constructs identical symmetric Gaussians around EACH data point. Therefore, to optimize the design, just vary the com...

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What is the default supervised learning algorithm in matlab
All of the net properties can be deduced via net = net % No semicolon Hope this helps. Greg

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Recurrent neural network with variable sized output
Matrix valued entities are usually represented via brackets [] Cell valued entries are usually represented via braces {} ...

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Is there some way to display the output FUNCTION of a neural net (i.e. the actual equation relating the inputs to the neural net output)?
I have several posts regarding this in both the NEWSGROUP and ANSWERS. It should suffice to search in ANSWERS using GREG ...

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How to set the target vector for image input in training neural network?
There are two choices 1-dimensional target 0 or 1 2-dimensional target [ 1;0 ] or [ 0;1 ] The 2-D target is preferred ...

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How to obtain the relative importance of each input variable for a neural network?
The relative importance of an input variable depends on what other input variables are present. For example, if you are not p...

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Update the weights of NARNET model
In order to adapt ANY feedforwardnet (that has been trained on data1) to data2, create data3 data3 = data1 + data2 And ret...

más de 9 años hace | 0

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How to stop training of a neural network at the error stability
It depends on the size of the data set. Therefore I would also monitor the gradients of whatever continuous measures you are t...

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how to train a bag of words for pattern recognition problems in neural network
The general assumptions are 1. training and nontraining (i.e., validation, test and unseen data) have the same summary...

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Can a created Neural network only be updated with train()
Training with only data2 after training with only data1 will degrade performance on data 1. Therefore you have several choice...

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Can a created Neural network only be updated with train()
Possibilities (double check my aging memory by creating your own trivial examples) 1. Empty net a. Use INIT. Results ind...

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What kind of neural network i should use?
I have already answered this question recently. Please reread it. 1. You need 2 nets trained on the same data. 2. A = net1...

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option chains and neural nets
Columnization using the (:) operator does not scramble the data. It rearranges it. The only problem is if the user scrambles ...

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Neural networks are giving me a headache!
Percentages of What ??? What are inputs and outputs? Matrix dimensions? minmax values?(Fractions instead of percentage...

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My neural network is getting trained but not yielding correct answers?plz help
Your input and target matrices are transposed Why Hmin=1 instead of 0? Where did you get Hmax = 50?? Search greg fitnet Hu...

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very good in training very bad in predictions (neural network)
newff is obsolete. Use fitnet instead. I think you wasted too much time on finding parameters. Typically, you should use de...

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Errors from the Neural Network Toolbox code
Individual inputs and targets in the NN Toolbox are COLUMN VECTORS, NOT ROW VECTORS ! [ I N ] = size(input) [ O N ] ...

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Evaluation of a network with only 1x4 matrix
If you are using the NN Toolbox you have to TRANSPOSE your matrices [ I N ] = size(input) % [ 4 87 ] [ O N ] = size(ta...

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Recurrent Neural Network with multiple time series
Your understanding of the term "multiple trajectories" is not clear to me. However, you cannot update any old net with only ...

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NARXNET training with independent data sets
If you first train with dataset A you will get weight and bias vector WA = getwb(netA). If you then train netA with data...

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What exactly are the gradient and Mu in ANN?
The gradient is the gradient of the square of the error function error = (knowntarget - variableoutput) with respect to t...

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Undefined function or method 'minmax' for input arguments of type 'double'.
minmax is a valid function 1. What version of MATLAB and NNTOOLBOX are you using? ver 2. Post the code where...

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Using different learning algorithms for the neural net toolkit
You may be worrying about the wrong thing. With a typical I-H-O FFnet the number of equivalent nets obtained by just changing we...

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How to get validation test and training errors of a neural network?
BOTH documentation commands help patternnet and doc patternnet have the following sample code for CLASSIFICATION & PAT...

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Can anyone give me a two input two output fit-net example with dataset
Typically, MATLAB equations are multidimensional. For regression, classification and time series, all you have to do is crea...

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Recurrent Neural Network with multiple time series
You can only train for one trajectory at a time; A multidimensional input just indicats a vector valued signal on a single tr...

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Help with ntstool future value predictions?
Since you don't mention an input/output scenario, I assume you are using a NARNET on a single feedback series. Search ...

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Test New Data on Neural Network
ynew = net(xnew); Hope this helps. *Thank you for formally accepting my answer* Greg

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How can I design a custom neural network with a modified output?
Just use a two-dimensional output trained with the target values for y and g. Hope this helps. *Thank you for formally acc...

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