Supported by Samsung Scholarship, 2008–2017
EE 364a (Convex Optimization I) course assistance, 2013–14 summer
EE 364b (Convex Optimization II) course assistance, 2013–14 spring
EE 364a (Convex Optimization I) course assistance, 2013–14 winter
CS 161 (Design and Analysis of Algorithms) course assistance, 2012–13 spring
CS 97SI (Introduction to Programming Contests) instructor, 2011–12 winter
ACM-ICPC Pacific Northwest judge, 2016
Stanford ACM-ICPC coach and problem setter, 2010–2015
Korea Olympiad in Informatics (KOI) coach and problem setter, 2008, 2012
International Olympiad in Informatics (IOI) student coach of the Korea team, 2013
Korea team won 2 golds and 2 silvers, placing 3rd (unofficial country rank).
USA Computing Olympiad (USACO) coach and problem setter, 2008–2011
Some old USACO stuff can be found here.
Asia Pacific Informatics Olympiad (APIO)
2007: Silver (7th place)
Jaehyun Park and Stephen Boyd, “A Semidefinite Programming Method for Integer Convex Quadratic Minimization”, Optimization Letters, 2017. (external link)
Jaehyun Park, “Sparsity-Preserving Difference of Positive Semidefinite Matrix Representation of Indefinite Matrices”, arXiv preprint, 2016. (pdf)
Jaehyun Park and Stephen Boyd, “Concave Quadratic Cuts for Mixed-Integer Quadratic Problems”, arXiv preprint, 2015. (external link)
Jaehyun Park and David Kamm, “Cortically Inspired Architectures for Action Recognition in Movie Clips”, Independent work, 2010. (pdf)
Michael Harris, David Kamm, Jaehyun Park, and Jeffrey Wang, “Unsupervised Learning of Invariances in Deep Networks”, Independent work (under the supervision of Professor Andrew Ng), 2010. (slides)
Michael Harris, Jaehyun Park, and Jeffrey Wang, “Deep Networks on the GPU”, Independent work (under the supervision of Professor Andrew Ng), 2010. (pdf)
Jaehyun Park, “Clone Detection in a Software Using Graph Modeling”, Independent work (under the supervision of Professor Byung-Ro Moon), 2006. (pdf in Korean)
Research intern at Instagram, 2016 summer
Research intern at Microsoft Research, 2013 summer
Software engineer at imo.im, 2011 summer
Software engineer at Facebook, 2009 summer
Gershwin-Grainger, 'Love Walked In,’ with Chopin's nouvelles etude #2 as a prelude (November 2015): video
Gershwin, Rhapsody in Blue (first piano: Patrick Kim, June 2015): video
Chopin, Barcarolle in F sharp (June 2014): video
Kapustin, Concert Etude 'Reverie’ (June 2014): video
Jaehyun's Senior Recital live recordings (May 2012)
I won the Humanities & Sciences Undergraduate Prize in Music for my performance of Chopin's 4th Ballade.
All other recordings are uploaded here.
This video was part of a PandoDaily article “Top 5 Stanford CS Students You Should Know,” posted on March 30th, 2012. The article is gone now, and only the video is remaining.
Random codes I wrote
I'm a big fan of 2D fighting games, especially the Street Fighter series.
I began indoor rock climbing in September 2014. My current level is 5.12 (top rope) and V6+ (bouldering).