88 citations · 138 across the 9 of their papers we have counts for
9 papers
Time-Reversed Dissipation Induces Duality Between Minimizing Gradient Norm and Function Value
Jaeyeon Kim, Asuman Ozdaglar, Chanwoo Park +1
In convex optimization, first-order optimization methods efficiently minimizing function values have been a central subject study since Nesterov's seminal work of 1983. Recently, h…
Optimal First-Order Algorithms as a Function of Inequalities
Chanwoo Park, Ernest K. Ryu
In this work, we present a novel algorithm design methodology that finds the optimal algorithm as a function of inequalities. Specifically, we restrict convergence analyses of algo…
A Geometric Structure of Acceleration and Its Role in Making Gradients Small Fast
Jongmin Lee, Chanwoo Park, Ernest K. Ryu
Since Nesterov's seminal 1983 work, many accelerated first-order optimization methods have been proposed, but their analyses lacks a common unifying structure. In this work, we ide…
Factor- Acceleration of Accelerated Gradient Methods
Chanwoo Park, Jisun Park, Ernest K. Ryu
The optimized gradient method (OGM) provides a factor- speedup upon Nesterov's celebrated accelerated gradient method in the convex (but non-strongly convex) setup. Howev…
convective heat transfer enhancement of non-condensing vertical upward slug flow using capillary-assisted phase separation
Milad Darzi, Chanwoo Park
This paper discusses the convective heat transfer enhancement of non-condensing slug flows by using phase separation for local liquid circulations through a porous-tube insert. Num…
Jet modification with medium recoil in quark-gluon plasma
Chanwook Park, Sangyong Jeon, Charles Gale
Jet energy transported to quark-gluon plasma during jet-medium interaction excites the QGP medium and creates energetic thermal partons -- recoil particles or recoils. Modification…
Multistage Monte-Carlo simulation of jet modification in a static medium
JETSCAPE Collaboration, Shanshan Cao, Chanwook Park +31
The modification of hard jets in an extended static medium held at a fixed temperature is studied using three different Monte-Carlo event generators (LBT, MATTER, MARTINI). Each ev…
Rapidity-dependent jet energy loss in small systems with finite-size effects and running coupling
Chanwook Park, Chun Shen, Sangyong Jeon +1
Longitudinal dynamics of particle production and rapidity-dependent jet energy loss are investigated in small and asymmetric colliding systems. We utilize an improved version of \t…
Direct photon production and jet energy-loss in small systems
Chun Shen, Chanwook Park, Jean-François Paquet +3
Two types of penetrating probes, direct photon and QCD jets, are investigated in the background of a small and rapidly expanding droplet of quark-gluon plasma. The additional therm…