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Poster
Approximate Steepest Coordinate Descent
Sebastian Stich · Anant Raj · Martin Jaggi
We propose a new selection rule for the coordinate selection in coordinate descent methods for huge-scale optimization. The efficiency of this novel scheme is provably better than the efficiency of uniformly random selection, and can reach the efficiency of steepest coordinate descent (SCD), enabling an acceleration of a factor of up to $n$, the number of coordinates. In many practical applications, our scheme can be implemented at no extra cost and computational efficiency very close to the faster uniform selection.
Numerical experiments with Lasso and Ridge regression show promising improvements, in line with our theoretical guarantees.
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Author Information
Sebastian Stich (EPFL)
Anant Raj (Max-Planck Institute for Intelligent Systems)
Marie-Curie Fellow
Martin Jaggi (EPFL)
Related Events (a corresponding poster, oral, or spotlight)
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2017 Talk: Approximate Steepest Coordinate Descent »
Tue. Aug 8th 01:24 -- 01:42 AM Room Parkside 2
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