Liu, Guanting, Yujie Zhong, Sheng Guo, Matthew R. Scott, and Weilin Huang. 2021. “Unchain the Search Space With Hierarchical Differentiable Architecture Search”. Proceedings of the AAAI Conference on Artificial Intelligence 35 (10):8644-52. https://ojs.aaai.org/index.php/AAAI/article/view/17048.