Search Results for author: Matthew Brennan

Found 6 papers, 0 papers with code

The staircase property: How hierarchical structure can guide deep learning

no code implementations NeurIPS 2021 Emmanuel Abbe, Enric Boix-Adsera, Matthew Brennan, Guy Bresler, Dheeraj Nagaraj

This paper identifies a structural property of data distributions that enables deep neural networks to learn hierarchically.

Statistical Query Algorithms and Low-Degree Tests Are Almost Equivalent

no code implementations13 Sep 2020 Matthew Brennan, Guy Bresler, Samuel B. Hopkins, Jerry Li, Tselil Schramm

Researchers currently use a number of approaches to predict and substantiate information-computation gaps in high-dimensional statistical estimation problems.

Two-sample testing

Reducibility and Statistical-Computational Gaps from Secret Leakage

no code implementations16 May 2020 Matthew Brennan, Guy Bresler

Inference problems with conjectured statistical-computational gaps are ubiquitous throughout modern statistics, computer science and statistical physics.

Average-Case Lower Bounds for Learning Sparse Mixtures, Robust Estimation and Semirandom Adversaries

no code implementations8 Aug 2019 Matthew Brennan, Guy Bresler

This paper develops several average-case reduction techniques to show new hardness results for three central high-dimensional statistics problems, implying a statistical-computational gap induced by robustness, a detection-recovery gap and a universality principle for these gaps.

Optimal Average-Case Reductions to Sparse PCA: From Weak Assumptions to Strong Hardness

no code implementations20 Feb 2019 Matthew Brennan, Guy Bresler

We also show the surprising result that weaker forms of the PC conjecture up to clique size $K = o(N^\alpha)$ for any given $\alpha \in (0, 1/2]$ imply tight computational lower bounds for sparse PCA at sparsities $k = o(n^{\alpha/3})$.

Universality of Computational Lower Bounds for Submatrix Detection

no code implementations19 Feb 2019 Matthew Brennan, Guy Bresler, Wasim Huleihel

In the general submatrix detection problem, the task is to detect the presence of a small $k \times k$ submatrix with entries sampled from a distribution $\mathcal{P}$ in an $n \times n$ matrix of samples from $\mathcal{Q}$.

Community Detection Two-sample testing

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