Liang, G. et al. 2020. An Effective Hard Thresholding Method Based on Stochastic Variance Reduction for Nonconvex Sparse Learning. Proceedings of the AAAI Conference on Artificial Intelligence. 34, 02 (Apr. 2020), 1585–1592. DOI:https://doi.org/10.1609/aaai.v34i02.5519.