Deterministic Coreset for Lp Subspace

This paper presents the first deterministic iterative algorithm for constructing an ε\varepsilon-coreset that guarantees p\ell_p subspace embedding for any p[1,)p \in [1,\infty), achieving an optimal size of O(dmax{1,p/2}/ε2)O(d^{\max\{1,p/2\}}/\varepsilon^2) by removing previously necessary logarithmic factors and enabling deterministic solutions for p\ell_p regression.

Rachit Chhaya, Anirban Dasgupta, Dan Feldman + 1 more2026-03-05🤖 cs.LG

A computational transition for detecting correlated stochastic block models by low-degree polynomials

This paper establishes that low-degree polynomial tests can distinguish between correlated sparse stochastic block models and independent Erdős-Rényi graphs if and only if the subsampling probability exceeds the minimum of Otter's constant and the Kesten-Stigum threshold, thereby identifying a sharp computational transition for detection and partial recovery.

Guanyi Chen, Jian Ding, Shuyang Gong + 1 more2026-03-05🤖 cs.LG