We present a streaming problem for which every adversarially-robust streaming algorithm must use polynomial space, while there exists a classical (oblivious) streaming algorithm that uses only polylogarithmic space. This is the first separation between oblivious streaming and adversarially-robust streaming, and resolves one of the central open questions in adversarial robust streaming.
Cite
@article{arxiv.2101.10836,
title = {Separating Adaptive Streaming from Oblivious Streaming},
author = {Haim Kaplan and Yishay Mansour and Kobbi Nissim and Uri Stemmer},
journal= {arXiv preprint arXiv:2101.10836},
year = {2021}
}