https://www.kaggle.com/stackoverflow/statsquestions
https://www.kaggle.com/c/jigsaw-toxic-comment-classification-challenge
https://developer.ibm.com/exchanges/models/all/max-toxic-comment-classifier/
https://www.quora.com/Is-binary-relevance-same-as-one-vs-all
https://vict0rs.ch/2018/06/17/multilabel-text-classification-tensorflow/
https://github.com/tensorflow/skflow/issues/113
https://towardsdatascience.com/journey-to-the-center-of-multi-label-classification-384c40229bff