Hi,
I'm trying to develop a neural network, where my weights are trained on-line, i.e. training algorithms should be called more times, and each time the net should keep learning starting from the current weights. So I added UPDATE_WEIGHTS flag, but when I use it, prediction and other methods return 0 or nan values. Is there a bug with this flag or am I supposed to do something different?
Here the code I used:
Mat classificationResult(1, 100, CV_32F);
Mat training_set = Mat::zeros(100,1,CV_8U); //fill it with something at each step in the loop
Mat test_set = Mat::zeros(100,1,CV_8U); //fill it either
Mat layers(3,1,CV_32S);
layers.row(0) = Scalar(100);
layers.row(1) = Scalar(10);
layers.row(2) = Scalar(100);
CvANN_MLP aann(layers,CvANN_MLP::SIGMOID_SYM,1,1); //aann initialization
CvANN_MLP_TrainParams params( cvTermCriteria(CV_TERMCRIT_ITER+CV_TERMCRIT_EPS, 1000, 0.0001), CvANN_MLP_TrainParams::BACKPROP, 0.1, 0.1);
while(1){ //run it for a while
int iterations = aann.train(training_set, training_set,Mat(),Mat(),params, CvANN_MLP::UPDATE_WEIGHTS);
}
aann.predict(test_set, classificationResult);
cout << classificationResult << endl;
Since I'd like to create an autoassociator supervision coincides with the pattern features. If, instead, I train my network without using UPDATE_WEIGHTS, I get consistent results.
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