B. Ghorbani

activity

20152022

most citedAn Investigation into Neural Net Optimization via Hessian Eigenvalue Density

103 citations · 166 across the 8 of their papers we have counts for

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2 papers · 1 filter

math.ST2019

Linearized two-layers neural networks in high dimension

Behrooz Ghorbani, Song Mei, Theodor Misiakiewicz +1

We consider the problem of learning an unknown function $f_{⋆}$ on the $d$ -dimensional sphere with respect to the square loss, given i.i.d. samples $\{(y_i,{\boldsymbol x}_i)\}…

math.ST2018

Optimal Covariance Estimation for Condition Number Loss in the Spiked Model

David L. Donoho, Behrooz Ghorbani

We study estimation of the covariance matrix under relative condition number loss $κ (Σ^{- 1/2} Σ^Σ^{- 1/2})$ , where $κ (Δ)$ is the condition number of matrix $Δ$ , and $Σ^$ and…