Seokwoo Kim

On INFORMS Connect, Austin Saragih (MIT) advertised their new Python package (SCGraph) for accurate distances and shortest paths in *real* road networks (and rail, maritime, multimodal). #orms

Getting Started: github.com/connor-makowski/scgraph
Paper and Tutorial: ssrn.com/abstract=5388845

The Robust Optimization Webinar (ROW) is back from the summer break! We will have our first seminar this Friday, September 5 at 15:00 (CET).

Speaker: Alexander Shapiro (Georgia Institute of Technology)

Title: Rectangularity and Duality of Distributionally Robust Markov Decision Processes

two rendezvous

(i) I met prof. Siddiqui again---we first met at last year informs. He warmly greeted me and introduced his colleage prof. Perez who recommended me 'Vete Katten'

(ii) I met elderly Korean lady in subway who immigrated in 1968(!). She recommended me herring and it was...a bit salty😂

I visited Stockholm to participate in STOGO25.. and the city has some cool vibe (a little bit melancholic mood... because of the weather?)

A Comprehensive Evaluation of Contemporary ML-Based Solvers for Combinatorial Optimization Machine learning (ML) has demonstrated considerable potential in supporting model design and optimization for combinatorial optimization (CO) problems. However, much of the progress to date has been e...

#Machine-learning based algorithms are still not able to beat deterministic general purpose solvers for #combinatorial #optimization.

arxiv.org/abs/2505.16952

Prof. bill cook has solved a tsp problem to walk 81998 bars in my country, South Korea - it takes 178 days (without taking rest...?!🤪)
www.math.uwaterloo.ca/tsp/korea/in...

STOGO25 STOGO 25 , XVI Workshop on Global Optimization

Just in case you do not know what to do at the beginning of September this year: Come to #Stockholm for the Global Optimization Workshop 2025!

Here are all the detailed information: sites.google.com/view/stogo25/

Mission-Critical: Why Optimization Experts Are Today’s Business MVPs - Gurobi Optimization Discover why optimization expertise is in high demand and learn how you can enhance your own skills.

#OptimizationExperts are the unsung heroes of today’s smartest business decisions. From operations researchers to data scientists, they use #MathematicalOptimization to cut costs, boost efficiency, and drive better decisions. Learn how: www.gurobi.com/resources/mi...

Definitely, they deserve more credit for their works in these fields😌

These days im working on branch-and-price... so much appreciated for scip and its python wrapper pyscipopt...

Can #bilevel #optimization help to solve challenging #robust optimization problems?

Maybe … here’s our first numerical study on this topic:

"Solving Decision-Dependent Robust Problems as Bilevel Optimization Problems"

Jointly with H. Lefebvre, S. Stevens, and J. Thürauf.

tinyurl.com/3nxmjt74

I am excited to announce the Gurobi Engineering MIP School: jobs.lever.co/GurobiOptimi...

We are looking for passionate programmers who like efficient algorithms, data structures, math and optimization and want to learn the ins and outs of mixed integer programming in theory and practice.

In memoriam: Marguerite Straus Frank (1927–2024)

A recent project was the In Memoriam for Dr. Marguerite Frank, a friend. Working with I.M. Bomze, the EIC of the EURO Journal on Computational Optimization, on it was a great experience. After 3 weeks of delays (technical problems) it's now published www.sciencedirect.com/science/arti.... #orms

Celebrating Two Amazing Female Operations Researchers, Both 93 Years Old, for Their Contributions to Algorithms Since this blogpost was published, sadly, Professor Ailsa Land passed away on May 16, 2021. Please refer to this obituary posted on the Lond...

Today, the daughters of Dr. Marguerite Frank wrote me that she passed away on Dec. 11 at the age of 97. I had written a post about her & Ailsa Land when they turned 93: annanagurney.blogspot.com/2021/03/cele... No obituary yet. Marguerite was a friend. I helped with a paper award in her honor. #orms

Im this year I read the survey paper for copositive program on EJOR by Immanuel Bomze and that was another mind blowing moment to me. It was super interesting and beautiful

But the rest of the secions were too technical to me... Reading the rest of the book was always my new-years plan but I always failed it😂

In my first year of graduate school I read the conic opt book of ben-tal and nemirovski. Section 1 - the 'linear to conic' part, explained from duality, farkas, and theorem on alternative - was absolutely mind blowin...

#MathOpt #ORMS people, what's something you wished was explained in your first course that introduced conic optimization?
Asking for a friend!

Experiencing numeircal challenges of introducing lots of bigMs... so annoying

So now human optimizers are being optimized? 😅

네 일단은 좀 분리해서 여기선 대학원생 얘기 위주로 써볼까해서요 ㅎㅎ 도쿄 사진 많이 올려주시길

새로운 곳에서의 시작. 응원합니다~!!

헐 많이 파셨네요ㅜㅋㅋㅋㅋㅋ 전 나중에 포항 떠날 때가 고민입니다ㅠㅋㅋㅋㅋ

본가 오니까 사놓고 안읽은 책들이 넘 마늠

제어이론 커뮤니티에서 많이 연구해서 자꾸 pde ode 쓰는데 평소에 저런거 안써가지고 낯섬 ㅋㅋㅋ 그치만 다행히 모든게 익숙한 Kakutani's Fixed Point Theorem 문제라는 걸 깨달음

응용 연구를 하다보니 이론쪽 관련해서 이것저것 편하게 물어볼 수 있는 친구가 있었으면 좋겟음

하나 골 아픈건 대부분 전자과 제어이론 커뮤니티에서 연구가 많이 되어서 그런지 읽을 때마다 머리속에서 이쪽 도메인으로 번역이 필요함

오늘 대충 어떤 흐름으로 진행되었고 키
아이디어가 뭔지는 캐치했다. 목표는 추석 연휴 안에 모델링 하나 만들어보는거..