Search Results for author: Seyoon Ko

Found 4 papers, 3 papers with code

High-Performance Statistical Computing in the Computing Environments of the 2020s

1 code implementation7 Jan 2020 Seyoon Ko, Hua Zhou, Jin Zhou, Joong-Ho Won

To our knowledge, this is the first demonstration of the feasibility of penalized regression of survival outcomes at this scale.

Computation

Splitting with Near-Circulant Linear Systems: Applications to Total Variation CT and PET

1 code implementation31 Oct 2018 Ernest K. Ryu, Seyoon Ko, Joong-Ho Won

Many imaging problems, such as total variation reconstruction of X-ray computed tomography (CT) and positron-emission tomography (PET), are solved via a convex optimization problem with near-circulant, but not actually circulant, linear systems.

Optimization and Control

Easily parallelizable and distributable class of algorithms for structured sparsity, with optimal acceleration

1 code implementation21 Feb 2017 Seyoon Ko, Donghyeon Yu, Joong-Ho Won

From this unification we propose a continuum of preconditioned forward-backward operator splitting algorithms amenable to parallel and distributed computing.

Distributed Computing

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