[GitHub] sbodenstein commented on issue #8582: Yolo2 operator

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sbodenstein commented on issue #8582: Yolo2 operator
URL: https://github.com/apache/incubator-mxnet/pull/8582#issuecomment-342901844
 
 
   One issue for us: this layer is an 'output layer' and hence doesn't support out grads into the layer. This is an unfortunate restriction, as it rules out things like example weighting. In addition, it does not return the actual per-example loss, which is non-trivial to compute. I think (but stand to be corrected, @piiswrong) that MXNet is moving away from these `output layers`. 
   
   One option: split this into a `yolo_region_layer` (based on DarkNet https://github.com/pjreddie/darknet/blob/master/src/region_layer.c), and then a separate loss layer that returns the loss.
   
   What are others thoughts on this? (could also have this 'output layer' and then also the separated region and loss layers, but this seems like a lot of code duplication).

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