Hou, J., Wu, X., Chen, J., Luo, J. and Jia, Y. 2018. Unsupervised Deep Learning of Mid-Level Video Representation for Action Recognition. Proceedings of the AAAI Conference on Artificial Intelligence. 32, 1 (Apr. 2018). DOI:https://doi.org/10.1609/aaai.v32i1.12300.