some useful datasets
SCUT-HEAD:https://github.com/HCIILAB/SCUT-HEAD-Dataset-Release
HollywoodHead dataset:https://www.di.ens.fr/willow/research/headdetection/
brian wash: https://exhibits.stanford.edu/data/catalog/sx925dc9385
something to something:https://20bn.com/datasets/something-something
Youtube-8M:https://research.google.com/youtube8m/
Multimodal Spontaneous Emotion (MMSE) dataset:http://www.cs.binghamton.edu/~lijun/