activity
20082026
most citedOn Sketching Quadratic Forms

52 citations · 220 across the 35 of their papers we have counts for

collaborators

36 papers

cs.DS2026

Frequency Moments in Noisy Streaming and Distributed Data under Mismatch Ambiguity

Kaiwen Liu, Qin Zhang

We propose a novel framework for statistical estimation on noisy datasets. Within this framework, we focus on the frequency moments () problem and demonstrate that it is possi…

cs.LG2021

Learning to Cluster via Same-Cluster Queries

Yi Li, Yan Song, Qin Zhang

We study the problem of learning to cluster data points using an oracle which can answer same-cluster queries. Different from previous approaches, we do not assume that the total n…

cs.LG2021

Batched Thompson Sampling for Multi-Armed Bandits

Nikolai Karpov, Qin Zhang

We study Thompson Sampling algorithms for stochastic multi-armed bandits in the batched setting, in which we want to minimize the regret over a sequence of arm pulls using a small…

cs.LG2020

Instance-Sensitive Algorithms for Pure Exploration in Multinomial Logit Bandit

Nikolai Karpov, Qin Zhang

Motivated by real-world applications such as fast fashion retailing and online advertising, the Multinomial Logit Bandit (MNL-bandit) is a popular model in online learning and oper…

cs.LG2020★ 4 cited

Multinomial Logit Bandit with Low Switching Cost

Kefan Dong, Yingkai Li, Qin Zhang +1

We study multinomial logit bandit with limited adaptivity, where the algorithms change their exploration actions as infrequently as possible when achieving almost optimal minimax r…

cs.DS2020★ 4 cited

Collaborative Top Distribution Identifications with Limited Interaction

Nikolai Karpov, Qin Zhang, Yuan Zhou

We consider the following problem in this paper: given a set of distributions, find the top- ones with the largest means. This problem is also called {\em top- arm identi…