Wang, Fei, Noah Lee, Jimeng Sun, Jianying Hu, and Shahram Ebadollahi. “Automatic Group Sparse Coding”. Proceedings of the AAAI Conference on Artificial Intelligence 25, no. 1 (August 4, 2011): 495–500. Accessed May 7, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/7928.