Hung Le
hunglv.bsky.social
Hung Le
@hunglv.bsky.social
Umass Amherst
Reposted by Hung Le
STOC 2026 is offering experimental pre-submission feedback using an AI tool optimized for checking mathematical rigor. Results won't go to PC or be used for training purposes. Opt-in via the submission server by November 1.

Details: acm-stoc.org/stoc202...
CFP: acm-stoc.org/stoc202...
October 25, 2025 at 5:16 PM
Some questions on spanners in my talk at the Simons Institute. Since the talk, progress has been made on a few questions, but most are open. minorfree.github.io/SpannerQues/
Some Questions on Spanners | Rambling on Graphs
minorfree.github.io
August 25, 2025 at 12:56 PM
I agreed to review 6 SODA papers this year (not counting other reviews); an idiot is here. It's hard to say no; my past self struggled to find reviewers. People (non-PC members) accepting more than 6 reviews for a theory conference are definitely inspiring; 6 is my new record. What's your number?
August 10, 2025 at 2:40 PM
On a Dagstuhl workshop that I recently co-organized: minorfree.github.io/Dagstuhl/
Dagstuhl Workshop: Experience and Organization | Rambling on Graphs
minorfree.github.io
June 1, 2025 at 8:32 PM
Reposted by Hung Le
Tracy Kimbrel, former National Science Foundation program director extraordinaire, will receive the 2025 ACM SIGACT Distinguished Service Award. He spearheaded programs such as TRIPODS (foundations of data science) and AitF (Algorithms in the Field).
1/2
May 31, 2025 at 4:16 PM
Reposted by Hung Le
The Call for Papers (CfP) for #SODA26 is out: www.siam.org/conferences-...

The submission server is open: soda26.hotcrp.com

Deadline: ⏰ Monday, July 14, AoE (July 15, 11:59am UTC)
SODA 2026
soda26.hotcrp.com
April 30, 2025 at 8:13 AM
Jonathan Conroy and Arnold Filtser have recently solved the padded decomposition problem for minor-free graphs, one of my favorite open problems. Congratulations to both!

Their paper here: arxiv.org/abs/2504.00278

My take: minorfree.github.io/PaddedSolved/
How to Protect Yourself from Threatening Skeletons: Optimal Padded Decompositions for Minor-Free Graphs
Roughly, a metric space has padding parameter $β$ if for every $Δ>0$, there is a stochastic decomposition of the metric points into clusters of diameter at most $Δ$ such that every ball of radius $γΔ$...
arxiv.org
April 13, 2025 at 9:48 PM
Reposted by Hung Le
I first got into smoothed analysis and linear programming during my master's. Now, 9 years later, we finally have matching upper and lower bounds.

I spent a huge part of my life on this, and it feels weird that it's now finished.
Optimal Smoothed Analysis of the Simplex Method
Smoothed analysis is a method for analyzing the performance of algorithms, used especially for those algorithms whose running time in practice is significantly better than what can be proven through w...
arxiv.org
April 8, 2025 at 12:22 PM
Reposted by Hung Le
Huge congratulations to my amazing student Yeyuan Chen (+co-author Zihan Zhang of OSU advised by Zeyu Guo) for being awarded the STOC 2025 Best Student Paper Award! Their monumental result proves that explicit Reed-Solomon codes can correct more errors than previously known:
arxiv.org/abs/2408.15925
Explicit Folded Reed-Solomon and Multiplicity Codes Achieve Relaxed Generalized Singleton Bounds
In this paper, we prove that explicit FRS codes and multiplicity codes achieve relaxed generalized Singleton bounds for list size $L\ge1.$ Specifically, we show the following: (1) FRS code of length $...
arxiv.org
April 4, 2025 at 4:08 PM
Reposted by Hung Le
I got a lot out of participating in WALDO back in 2021, so I definitely recommend checking it out! 😄
An announcement: the Workshop on Algorithms for Large Data (Online) 2025 will take place 🗓️ April 14—16.
waldo-workshop.github.io/2025.html

Goal: "to generate new collaborations through an emphasis on big data algorithms, broadly defined"

Register (free) by ⏰ April 7 to access the virtual platform
Workshop on Algorithms for Large Data (Online) 2025
waldo-workshop.github.io
March 19, 2025 at 6:42 PM
Reposted by Hung Le
The next few talks on TCS+ (@tcsplus.bsky.social):
🍰 Tom Gur on Zero-Knowledge PCPs (March 19) (@tomgur.bsky.social)
🍰 Or Zamir on streaming and optimal F₂ moment estimation (April 9)
🍰 Ryan Williams on time v. memory (April 23) (@rrwilliams.bsky.social)

Sweet!
March 6, 2025 at 10:13 AM
Reposted by Hung Le
The STOC 2025 Theory Fest is looking for workshop proposals!
Apply here:
stoc2025theoryfest.netlify.app
Deadline is March 9th, so act fast!
Vite + React + TS
stoc2025theoryfest.netlify.app
March 1, 2025 at 3:06 PM
Reposted by Hung Le
Hey, it's March now. You know what would be great? Nominating trailblazing TCS researchers to the Knuth Prize!

www.sigact.org/prizes/knuth...
March 2, 2025 at 1:39 AM
Reposted by Hung Le
CALL FOR PAPERS: With Robert Calderbank, Krishna Narayanan, Henry Pfister and Mary Wootters, I'm editing a special issue of the IEEE BITS magazine on Error-Correcting Codes & invite expository/tutorial articles.
Deadline: April 17 (white paper). Please circulate widely.
www.itsoc.org/sites/defaul...
www.itsoc.org
February 20, 2025 at 10:59 PM
Reposted by Hung Le
CRA statement on the cuts at NSF: "These cuts are the very definition of being pennywise and pound foolish — a shortsighted move that will undermine American innovation and technological leadership .."

cra.org/cuts-to-nsf-...
Cuts to NSF and CISE Directorate Jeopardize American Leadership in Computing
A statement from the Computing Research Association (CRA) The reported termination today of 10 percent of the National Science Foundation’s (NSF) workforce — including significant cuts to the Compu…
cra.org
February 19, 2025 at 2:19 AM
the Four Russians Method is a technique for speeding up Boolean matrix multiplication and dynamic programming. The original paper is in Russian, and I am not aware of any English translation. Now we have a translation, by Ben Rozonoyer, a PhD student at UMass.

minorfree.github.io/FourRussian/
The Four Russian Method: Now in English | Rambling on Graphs
minorfree.github.io
February 10, 2025 at 6:21 PM
Reposted by Hung Le
The #FOCS2025 website is up! Featuring a Call for Papers and important dates: focs.computer.org/2025/

⏰ Deadline: April 3, 2025 (8pm ET)
⏰ Notification: July 8, 2025
🗓️ Conference: December 14–17, 2025

Content and info will be added as it becomes available (workshops, activities, travel support).
FOCS 2025
focs.computer.org
February 8, 2025 at 9:04 PM
STOC 25 accepted papers: acm-stoc.org/stoc2025/acc...
STOC 2025 - 57th ACM Symposium on Theory of Computing
acm-stoc.org
February 7, 2025 at 10:42 PM
Just learnt about this: you can query DBLP to find out the most number of authors on a paper at a conf or a group of conf: SODA 11, FOCS 11, STOC 10. The new record this year at STOC 25 is 13.
February 7, 2025 at 2:52 PM
Reposted by Hung Le
A proof is a logical argument written to convince a skeptical audience. A corollary is that the best way to read a proof is to roleplay as a skeptical audience.
February 6, 2025 at 2:33 PM
STOC25 notification was out. A record number of submissions, 735, and acceptances, 218. To compare with SODA 25, 655 submissions and 192 acceptances. This is probably the 1st time STOC has more submissions and acceptances than SODA.
January 31, 2025 at 10:47 PM
New post summerizes what I've learnt over the last few years about Locality Sensitive Ordering, a technique for reducing geometric problems in R^d to problems in the line (1D): minorfree.github.io/LSO/
Locality-Sensitive Orderings | Rambling on Graphs
minorfree.github.io
January 22, 2025 at 6:46 PM
Reposted by Hung Le
My latest in @quantamagazine.bsky.social: why theoretical computer scientists like to pose questions to imaginary black boxes:
Why Computer Scientists Consult Oracles | Quanta Magazine
Hypothetical devices that can quickly and accurately answer questions have become a powerful tool in computational complexity theory.
www.quantamagazine.org
January 3, 2025 at 2:44 PM