Extend the ArgMaxLayer to output top k results
Add the test cases for the mulitple top predictions argmax layer
Simplify the top-k argmax layer using std::sort
Use std::partial_sort in the ArgMaxLayer as suggested by @shuokay
Move compararing function from common_layers to argmax_layer
Refactor the accuracy layer with std::partial_sort
Add more test cases for the accuracy layer
Limit the comparison functions to have file scope
Include <utility> for pair in the accuracy layer
Fix style issues in accuracy & argmax layer
remove unused includes in AccuracyLayer and ArgMaxLayer
Merge pull request #615 from kloudkl/top-k-argmax