@inproceedings{li2020ngs,
title={Closed Loop Neural-Symbolic Learning via Integrating Neural Perception, Grammar Parsing, and Symbolic Reasoning},
author={Li, Qing and Huang, Siyuan and Hong, Yining and Chen, Yixin and Wu, Ying Nian and Zhu, Song-Chun.},
booktitle={International Conference on Machine Learning (ICML)},
year={2020}
}