B. Ghorbani

activity

20152025

most citedAn Investigation into Neural Net Optimization via Hessian Eigenvalue Density

103 citations · 166 across the 9 of their papers we have counts for

collaborators

Showing 2018Show all

2 papers · 1 filter

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…

stat.ML2018

An Instability in Variational Inference for Topic Models

Behrooz Ghorbani, Hamid Javadi, Andrea Montanari

Topic models are Bayesian models that are frequently used to capture the latent structure of certain corpora of documents or images. Each data element in such a corpus (for instanc…