2017-12-16 04:21:38 -0600 | commented question | Setting up MLP for image recognition @sjhalayka, since this are binary flags, it has no effect on result - 0100 + 0010 is 0110, the same as using OR operator |
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2016-06-02 10:42:37 -0600 | answered a question | Neural Networks UPDATE_WEIGHTS does not work You can't train NN with Then you can train the NN with |
2016-06-02 09:58:44 -0600 | commented question | MLP Train iteration limit - bug? I'm not optymising yet, just checking the learning process - if I get complete garbage and nonsense result from learning data the NN is useless. And the question was only about learning bug - i just wan't to increase traning iterations to increase hidden layer size... |
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2016-06-01 13:18:36 -0600 | commented question | MLP Train iteration limit - bug? if the NN can't recognize the traning images it also can't recognise testing images ;) |
2016-06-01 09:30:46 -0600 | commented question | MLP Train iteration limit - bug? but when i train the NN with 5 images it can't recognise this 5 images again! i'm not talking about generalization feature and learning, the problem is with learning iteration - I decreased the hidden layer size to 50 and it can learn and recognize all 4 images per class ;) |
2016-06-01 06:42:13 -0600 | asked a question | MLP Train iteration limit - bug? I am trying to learn my neural network to classify images. The whole learning data preparing and other stuffs work ok, the NN can learn recognizing 5 images (1 per class). But when I get it 2 images per class, I got quite bad results - I think it's because the NN is undertained. So I updated the term criteria from 1000 to 10 000: but with no success - still the same training time and recognizing results. It looks like the max iteration parameter only scale from 1-3000 - higher values don't make a difference. So I tryied to update the weight in loop: But only first 2-3 iterations take time, the other aren't learining anything and I just got text spaming in console. My layers size are 1250-300-5. When I set the hidden layers to 100 i got better results and with 50 the results are perfect, so it means that the NN is working ok but I can't force the OpenCV to extend the learning time. So my question is how to force the OpenCV ANN_MLP to pefrorm larger training? Any tips will be helpful ;) |
2016-05-29 09:41:33 -0600 | commented question | Setting up MLP for image recognition Thanks, the backprop weight scale was too big - I set it to 0.0001 or 0.001 and I got better results. Then I changed the hidden layer size to 100 and i was able to learn the NN my images ;) |
2016-05-29 02:11:30 -0600 | asked a question | Setting up MLP for image recognition Hi! I am new in OpenCV world and neural networks but I have some coding experience in C++/Java. I created my first ANN MLP and learned it the XOR: It works very well for this simple problem, I also learn this network the 1-10 to binary conversion. But i need to use MLP for simple image classification - road signs. I write the code for loading training images and preparing matrix for learning but I'm not able to train the network - it "learn" in one second even with 1 000 000 iterations! And it produce garbage results, the same for all inputs! (more) |