D. Guillot

activity

20112026

most citedIterative Thresholding Algorithm for Sparse Inverse Covariance Estimation

71 citations · 300 across the 27 of their papers we have counts for

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Showing 2018Show all

2 papers · 1 filter

math.CA2018★ 14 cited

A panorama of positivity

Alexander Belton, Dominique Guillot, Apoorva Khare +1

This survey contains a selection of topics unified by the concept of positive semi-definiteness (of matrices or kernels), reflecting natural constraints imposed on discrete data (g…

math.CO2018★ 2 cited

The critical exponent: a novel graph invariant

Dominique Guillot, Apoorva Khare, Bala Rajaratnam

A surprising result of FitzGerald and Horn (1977) shows that $A^{\circ α} := (a_{ij}^{α})$ is positive semidefinite (p.s.d.) for every entrywise nonnegative $n \times n$ p.s.d. matri…