Wang, R., Wei, H., An, B., Feng, Z. and Yao, J. 2021. Commission Fee is not Enough: A Hierarchical Reinforced Framework for Portfolio Management. Proceedings of the AAAI Conference on Artificial Intelligence. 35, 1 (May 2021), 626-633. DOI:https://doi.org/10.1609/aaai.v35i1.16142.