226 citations · 408 across the 9 of their papers we have counts for
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math.NA2015★ 6 cited
Rows vs. Columns: Randomized Kaczmarz or Gauss-Seidel for Ridge Regression
Ahmed Hefny, Deanna Needell, Aaditya Ramdas
The Kaczmarz and Gauss-Seidel methods aim to solve a linear system by iteratively refining the solution estimate; the fo…
cs.LG2015★ 107 cited
On Variance Reduction in Stochastic Gradient Descent and its Asynchronous Variants
Sashank J. Reddi, Ahmed Hefny, Suvrit Sra +2
We study optimization algorithms based on variance reduction for stochastic gradient descent (SGD). Remarkable recent progress has been made in this direction through development o…
stat.ML2015★ 30 cited
Supervised Learning for Dynamical System Learning
Ahmed Hefny, Carlton Downey, Geoffrey Gordon
Recently there has been substantial interest in spectral methods for learning dynamical systems. These methods are popular since they often offer a good tradeoff between computatio…