All Questions
Tagged with convolutional-neural-networks keras
3 questions
37
votes
6
answers
11k
views
Why do CNN's sometimes make highly confident mistakes, and how can one combat this problem?
I trained a simple CNN on the MNIST database of handwritten digits to 99% accuracy. I'm feeding in a bunch of handwritten digits, and non-digits from a document.
I want the CNN to report errors, so I ...
- 1,369
1
vote
1
answer
2k
views
Should one use an "other" category in image classification?
In image classification, there are sometimes images that do not fit in any category.
For example, if I build a CNN in Keras to classify Dogs and Cats, does it help (in terms of training time and ...
- 113
5
votes
1
answer
610
views
How does backpropagation work on a custom loss function whose components have magnitudes of different orders?
I want to use a custom loss function which is a weighted combination of l1 and DSSIM losses. The DSSIM loss is limited between 0 and 0.5 where as the l1 loss can be orders of magnitude greater and is ...
- 107