sxjscience commented on issue #9777: [MX-9588] Add micro averaging strategy for 
F1 metric
URL: https://github.com/apache/incubator-mxnet/pull/9777#issuecomment-365397351
 
 
   Also, one thing to note is that when the output has only one-label, the 
micro F1 is equivalent to accuracy 
https://stackoverflow.com/questions/37358496/is-f1-micro-the-same-as-accuracy . 
This could potentially help accelerate the computation of micro f1.
   
   Also, we sometimes need to deal with **multi-label** classification and may 
need to support that in the future.

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