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A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

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10 results for MEKA

Algorithm learns Sherrington-Kirkpatrick model parameters at low temperatures.

problem Learning parameters of random graphical models at low temperatures.
method Multiplicative-weight update algorithm for polynomial time learning.
result Algorithm learns SK model parameters at βlognβ\leq \sqrt{\log n}.

Quantifies polynomial approximation rates for smooth functions under various distributions.

problem Approximating smooth functions with polynomials under different distributional constraints.
method Develops a quantitative analogue of Carleman's theorem using complex analysis.
result Establishes superexponential rates of approximation for certain function classes over general distributions.

Efficiently estimates linear models robust to corrupted data.

problem Learning linear models under adversarial corruption and minimal distributional assumptions.
method Develops a polynomial relaxation of independence to achieve optimal convergence rate.
result Achieves optimal convergence rate of ε22/kε^{2-2/k} for kk-hypercontractive distributions.

Given a large data matrix ARn×nA\in\mathbb{R}^{n\times n}, we consider the problem of determining whether its entries are i.i.d. with some known marginal distribution AijP0A_{ij}\sim P_0, or instead AA contains a principal submatrix AQ,QA_{{\sf Q},{\sf Q}} whose entries have marginal distribution AijP1P0A_{ij}\sim P_1\neq P_0. As …

2015-02-23abs ↗pdf ↗