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Sihan Liu

9 accepted papers

2026

Sample Complexity Bounds for Robust Mean Estimation with Mean-Shift Contamination

ICML 2026poster

We study the basic task of mean estimation in the presence of mean-shift contamination. In the mean-shift contamination model, an adversary is allowed to replace a small constant fraction of the clean samples by samples drawn from arbitrarily shifted versions of the base distribution. Prior work cha…

Cited by 0SourceScholar
2025

Batch List-Decodable Linear Regression via Higher Moments

ICML 2025poster

We study the task of list-decodable linear regression using batches, recently introduced by Das et al. 2023.. In this setting, we are given $m$ batches with each batch containing $n$ points in $\mathbb R^d$. A batch is called clean if the points it contains are i.i.d. samples from an unknown linea…

Cited by 0SourcePDFScholar
2024

Don't Look Twice: Faster Video Transformers with Run-Length Tokenization

NeurIPS 2024spotlight

Video transformers are slow to train due to extremely large numbers of input tokens, even though many video tokens are repeated over time. Existing methods to remove uninformative tokens either have significant overhead, negating any speedup, or require tuning for different datasets and examples. We…

2024

Rotated Multi-Scale Interaction Network for Referring Remote Sensing Image Segmentation

CVPR 2024poster

Referring Remote Sensing Image Segmentation (RRSIS) is a new challenge that combines computer vision and natural language processing. Traditional Referring Image Segmentation (RIS) approaches have been impeded by the complex spatial scales and orientations found in aerial imagery leading to suboptim…

2023

Efficient Testable Learning of Halfspaces with Adversarial Label Noise

NeurIPS 2023poster

We give the first polynomial-time algorithm for the testable learning of halfspaces in the presence of adversarial label noise under the Gaussian distribution. In the recently introduced testable learning model, one is required to produce a tester-learner such that if the data passes the tester, t…

Cited by 17SourcePDFScholar
2022

Nearly-Tight Bounds for Testing Histogram Distributions

NeurIPS 2022accept

We investigate the problem of testing whether a discrete probability distribution over an ordered domain is a histogram on a specified number of bins. One of the most common tools for the succinct approximation of data, $k$-histograms over $[n]$, are probability distributions that are piecewise con…

Cited by 8SourcePDFScholar