Réponse apportée
How to use positive part: subplus(x) for neuron model (instead of tansig(x) or logsig(x))?
In the command line: Use the commands lookfor, help, doc and type on the functions hardlim perceptron adapt ...

plus de 11 ans il y a | 0

Réponse apportée
How to choose "Nlocmin,Nlocmax" in non linear regression and curve fitting?
Plot the target and count the number of local extrema. This will only work for relatively smooth functions. Otherwise use...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
how can i evaluate my artificial neural network when the targets' range is very short and mse doesnt work?
Yes, the normalized MSE NMSE = mse(t-y)/mean(var(t',1)) and corresponding coefficient of determination or Rsquared R2...

plus de 11 ans il y a | 0

Réponse apportée
How can change the performance function in neural network ?
The PATTERNNET default is crossentropy. There is nothing more for you to do except make sure that the target matrix columns are ...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
What is the appropriate Method to normalize inputs data ????
The data is automatically normalized in the training function. You do not have to do anything extra except to make sure that you...

plus de 11 ans il y a | 1

| A accepté

Réponse apportée
How to generate initial weights for back-propagation neural network (BPNN) using MATLAB R2012a?
The reason why the answers are different is because the state of the random number generator changes each time it is called. ...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
How to compute sensitivity analysis in neural network model?
1. Use MAPSTD or ZSCORE to standardize the data BEFORE training. 2. Design 10 or more successful nets with the smallest numbe...

plus de 11 ans il y a | 2

| A accepté

Réponse apportée
What´s wrong with my neural network´s training?
load('nntoolMLP.mat') whos % Name Size Bytes Class % % D 1x1 1776 cell ...

plus de 11 ans il y a | 0

Réponse apportée
USPS Dataset with Class uint8
You are asking in the wrong place. Contact Sam Roweis, Vision, Learning and Graphics Group, NYU, www.cs.nyu.edu/~roweis ...

plus de 11 ans il y a | 0

Réponse apportée
please help me to implement math lab code for classification of cytological images using probabilistic neural network???math lab code for testing image using PNN???/
1. Read the help and doc documentation and try the documentation examples >> lookfor PNN newpnn -...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
how to get objective function in neural network
I think you are making the problem harder than it is. For example, neither a second hidden layer nor a genetic solution is warra...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
Calculation of tp,tn,fp,fn for multi classes
The standard approach for c classes is to use a target matrix of size [ c N ]that only contains columns of the matrix eye(c). Th...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
Very high ratio of the Targets / inputs
I usually standardize inputs and outputs using ZSCORE (zero mean, unit variance) before training. Hope this helps. *Thank ...

plus de 11 ans il y a | 1

| A accepté

Réponse apportée
Neural Network Toolbox - Backpropagation stopping criteria
If you are going to use MATLAB, I suggest using as many defaults as possible. 1. Use PATTERNNET for classification 2. To s...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
How to prepare target vector in matlab?
Time-series forecasting involves predicting future outputs given a subset of the present input, delayed past inputs and delayed ...

plus de 11 ans il y a | 1

Réponse apportée
How to prepare target vector in matlab?
Neural networks are models of functions. There are 4 basic types. The types and corresponding MATLAB functions are 1. FITNET:...

plus de 11 ans il y a | 1

| A accepté

Réponse apportée
How to optimize neural networks for over-dispersed target data?
Use a radial basis function net help newrb doc newrb Also consider newrbe , newgrnn, newpnn, etc

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
What´s wrong with my neural network´s training?
net2 = train(net1,...); Now there are 2 nets one trained and one untrained. Which do you think is untrained? *Thank y...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
How to predict future values by using Elman recurrent neural network (ERNN) in MATLAB R2012a?
help elmannet doc elmannet

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
Neural networks for XOR function with training data set
help patternnet doc patternnet Also, search on XOR

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
How to generate initial weights for back-propagation neural network (BPNN) using MATLAB R2012a?
Most of the neural network functions create their own initial weights. See the documentation examples help fitnet doc...

plus de 11 ans il y a | 0

Réponse apportée
help for starting neural network code
help fitnet doc fitnet

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
request for code related to neural network
help fitnet doc fitnet

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
Dynamic neural network on MATLAB
help narxnet doc narxnet For additional example data help nndatasets doc nndatasets For additional examples ...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
What´s wrong with my neural network´s training?
I answered this in your previous post.

plus de 11 ans il y a | 0

Réponse apportée
How is trained neural network type newff?
help newff doc newff Search in the NEWSGROUP and ANSWERS greg newff Note. Newff has been obsolete for 5 years. The ...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
How to properly train the network MPL?
You seem to repeatedly make this same mistake: net = train(net1,P,T); Y = sim(net1,P); Now: There are 2 nets: net1 a...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
How can I change the validation vectors in a neural network?
1. MSE ~ 0.5 doesn't mean much unless the 3 target variances are known. 2. It will mean even more if they all are equal. Then...

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
How can we use a neural network trained through nntool for online testing...?
nntool is obsolete. Use nnstart. There should be a direct way to save a trained net.

plus de 11 ans il y a | 0

| A accepté

Réponse apportée
how to convert my matrix to a {0,1} c-dimensional unit vectors?
Copy and paste into the command line trueclassindices = [ 1 3 5 7 9 2 4 6 8 10 ] target = ind2vec(trueclassindic...

plus de 11 ans il y a | 1

| A accepté