Spark Transformer: Reactivating Sparsity in Transformer FFN and Attention - You, Chong; Wu, Kan; Jia, Zhipeng; Chen, Lin; Bhojanapalli, Srinadh; Guo, Jiaxian; Evci, Utku; Wassenberg, Jan; Netrapalli, Praneeth; Willcock, Jeremiah; Subramanian, Suvinay; Chern, Felix; et al. (Advances in Neural Information Processing Systems, 2025)