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Questions tagged [nntool]

27 questions
4
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1 answer

Using nntool [MATLAB] from command line

I have this code: in = [5 columns of data-points]; out = [1 column of data-points]; net = newfit(in,out,5); net = train(net,in,out); now I want to access the error variable that is generated (so that I can calculate the mean error etc.) run this…
Lazer
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Comparing two neural networks (nntool in Matlab)

I'm new to the Neural Network Toolbox (nntool) in Matlab. I have trained two networks using the same data set. One of these networks contains a higher number of neurons as the other one. Now I'm wondering: how can I compare these networks? How can I…
Namenlos
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1 answer

Why does the neural network stop training because of the gradient?

I am training a neural network and it stopped training due to the gradient stopping condition. From what I can see the gradient 8.14e-0.6 is larger than minimum gradient 1e-0.5, so why did it stop? Is it because the gradient wasn't improving so…
GJHix
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How to format data for use in nntool (MATLAB)?

In nntool, the sample data is formatted as: [0 1 -1; 2 3 1] I have ~8000 data points in a text file. How do I format those points for use here? What does the semicolon signify?
Lazer
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2
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1 answer

what "target" do i put in iris dataset nntool matlab?

I am new in using matlab so this might be easy. I am trying to make an iris dataset neural network in matlab using nntool(feed-forward back propagation network). but i cant find out what the target matrix should be. I also am trying to find (tried…
user2023109
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Can't get neural network result in MATLAB

I guess my question is very simple, but anyway... I've created neural network using net = newff(entry_borders, [20, 10], {'logsig', 'logsig'}, 'traingdx'); where entry_borders is an array 50x2: [(0,1), (0,1), ...] It must be a network with a hidden…
leshka
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How I can add more hidden layers on the nftool code that I exported from the nnstart GUI?

Since I don't know much about how to implement a network using command line, I tried using the GUI from NNSTART and exported the code so I could try to figure out how to make the changes I need. the problems is that I don't how to add more…
Caio Custódio
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2 answers

How to disable the window that pops up after neural network training in MATLAB

I am relatively new to MATLAB Neural Netowrks, I'm using the network for some function approximation while another code is running and I'll be training the neural network for several times in just one run. After the training is done, a window pops…
Sahand Rezaei
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1 answer

Text representation for Neural training Network

I'm developing a Neural training network with nntool in Matlab and I have as inputs 11250 text files with different lengths (from 10 to 500 words or let's say from 10 to 200 words if I eliminate redundant words ), I didn't find a good method to…
Eadhun Di
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why the suggestion of output activation function of neural network in NNtool box is pureline?

When I study neural network, the mathematical derivation always use sigma function in the hidden layer and the output layer. But the NNtool box in Mathworks suggests the user to use sigma in the hidden layer and pureline in the output layer. Can…
Leo Hsieh
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Understanding Output layer of a Neural Network in Matlab

I am experimenting with Matlab, set up a Narx Neural Network with the input vector consisting of 2 values, each of them is delayed 30 times, than I have a hidden sigmoid layer with 40 neurons, another one with 15 and the output layer consisting of…
womdom
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2 answers

ANN-based navigation system

I am currently working on an indoor navigation system using a Zigbee WSN in star topology. I currently have signal strength data for 60 positions in an area of 15m by 10 approximately. I want to use ANN to help predict the coordinates for other…
appster
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"Insufficient number of outputs from right hand side of equal sign to satisfy assignment." Matlab

Hy everybody, I'm trying to implement a neural network with matlab using nntool. Does anyone know what the following error message means? **??? Insufficient number of outputs from right hand side of equal sign to satisfy assignment. Error in…
Ricardo Graça
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Dimension error in MATLAB's Neural Network Toolbox (NNtool) target matrix

I am exploring MATLAB's Neural Network Toolbox (NNtool), and I am running into a problem of having incompatible dimensions of target matrix. The exact error message is: com.mathworks.jmi.MatlabException: Insufficient number of outputs from right…
Nadeem
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How to obtain new data from the given starting point?

I am new in Neural network and matlab. My problem -> I have some XYgraphs (X-data, Y-Time). All graphs have same time, but different X values. Also I have a starting point Z. I want to get the actual graph which start from Z, based on above said XY…
Adarsh Sunil
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