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Convolutional Neural Networks (CNN, also called ConvNets) are a tool used for classification tasks and image recognition. The name giving first step is the extraction of features from the input data.

3 votes
1 answer
134 views

Accuracy decrease in production after adding additional input datas

I am trying to predict TimeSeriesA by using a CNN. I create snapshot images of the timeseries and these are then labelled. With a very simple snapshot I get reasonable training and test accuracy. … Can a CNN be confused (wrong word!) by the additional data? …
ManInMoon's user avatar
1 vote
2 answers
557 views

Why does my model sometimes not learn well from same data?

I have a dataset of 2 classes, both containing 2K images. I have split that into 1500 images for training and 500 images for validation. This is a simple structure for testing purposes, and each imag …
ManInMoon's user avatar
1 vote
0 answers
71 views

Why does SimpleNet achieve accuracy 0.9+ but AlexNet does not?

I am trying to classify some 224x224 RGB images. I have 3 potential labels, but am currently only supplying training images for 2. My training set has approx. 2K images for both labels. When I train …
ManInMoon's user avatar
0 votes
1 answer
282 views

What could cause training CNN accuracy to drop after 7th epoch?

I am training a CNN on some new dataset. Usually, the accuracy steadily improves over 10-20 epochs. …
ManInMoon's user avatar
1 vote
2 answers
133 views

Why does adding random pixels stop my model learning in cnn?

I am using a very simple model to classify a 224x224 RGB image. For a test, I have labelled my images (2 labels "Green" or "Red", 2,000 images of each) based on colour of a single fixed pixel from up …
ManInMoon's user avatar