@inproceedings{ICLR:2026:Wen,<br>
  author = {Dongxie Wen and Hanyan Yin and Xiao Zhang and Peng Zhao and Lijun Zhang and Zhewei Wei},<br>
 title = {Revisiting Matrix Sketching in Linear  Bandits: Achieving Sublinear Regret via Dyadic Block Sketching},<br>
  booktitle = {International Conference on Learning Representations (ICLR)},<br>
 pages = {86907--86942},<br>
  year =  {2026},<br>
}