@inproceedings{NEURIPS2019_1bd4b29a, author = {Liu, Xiao and Zou, Xiaolong and Ji, Zilong and Tian, Gengshuo and Mi, Yuanyuan and Huang, Tiejun and Wong, K. Y. Michael and Wu, Si}, booktitle = {Advances in Neural Information Processing Systems}, editor = {H. Wallach and H. Larochelle and A. Beygelzimer and F. d\textquotesingle Alch\'{e}-Buc and E. Fox and R. Garnett}, pages = {}, publisher = {Curran Associates, Inc.}, title = {Push-pull Feedback Implements Hierarchical Information Retrieval Efficiently}, url = {https://proceedings.neurips.cc/paper_files/paper/2019/file/1bd4b29a8e0afccd9923fe29cecb4b29-Paper.pdf}, volume = {32}, year = {2019} }