MetaLA: Unified Optimal Linear Approximation to Softmax Attention Map - Chou, Yuhong; Yao, Man; Wang, Kexin; Pan, Yuqi; Zhu, Ruijie; Zhong, Yiran; Qiao, Yu; Wu, Jibin; Xu, Bo; Li, Guoqi (Advances in Neural Information Processing Systems, 2024)