Claudio Contardo

YouTube video by Benn Jordan I Saved a PNG Image To A Bird

Holy shit. This guy saved a PNG to a bird.

(he drew a bird into a spectrogram, played that sound to a starling, and the starling reproduced it back to him with enough accuracy he got his bird drawing back in their call's spectrogram) www.youtube.com/watch?v=hCQC...

But cassé / broken goal

Gazon dans très mauvais état / Grass in a very poor condition

@villedemontreal.montreal.ca le terrain de soccer au parc LeBer à PSC est dans un état déprimant. Un but cassé (dangereux!) et le gazon qui n'en reste presque plus

@isacor.bsky.social mira

Industrial and Systems Engineering Day logo

I am thrilled to announce the establishment of Industrial and Systems Engineering Day (#ISEday), a new initiative dedicated to increasing awareness of #ISE and inspiring future generations. The first #ISEday will be celebrated on September 15, 2025. For email updates sign up here: lnkd.in/ghWXWQYm

This is now out, we're super proud to have won the Land-Doig MIP competition prize for our algorithm for mixed-integer quadratic optimization!

Collar de melones

"we shall be happy to award a chocolate windmill to the first person..."

I love older papers.

Lenstra and Kan, 1979 "Computational Complexity of Discrete Optimization Problems" Annals of Discrete Mathematics

#orms

technically that's what he did 😁

Academics find links between energy drinks and aggressive leukaemias... well... that's one way to make me quit

www.nature.com/articles/s41...

Popularity of the first name Eleanor correlates with Wind power generated in Poland (r=0.993)

Jacques Desrosiers and myself, sitting in front of our computers

working in Paris (and teaching at the 2025 school on column generation, starting tomorrow) #orms #cg2025

A Potential Path to Safer AI Development Yoshua Bengio warns that the current approach to developing AI models carries potentially catastrophic risks.

Two years ago, I've completely reoriented my research to try to make AI safe by design. In this TIME op-ed, I present my team's new direction called "Scientist AI"; a practical, effective and more secure alternative to the current uncontrolled agency-driven trajectory.
time.com/7283507/safe...

Integrating Column Generation and Large Neighborhood Search for Bus Driver Scheduling with Complex Break Constraints The Bus Driver Scheduling Problem (BDSP) is a combinatorial optimization problem with the goal to design shifts to cover prearranged bus tours. The objective takes into account the operational cost as...

For those of you interested in bus scheduling (I know that there are only a few of us ...): branch and price and large neighborhood search for dealing with the complex realities in the field.

arxiv.org/abs/2505.02485

Hello BlueSky (finally!)

Figured there is no better first post than to one sharing the exciting news that my first PhD student, Meghan Meredith, successfully defended her thesis!

#PhDone #orms

I suspect that the occasional people who try hard to convince me to “follow the teachings of Christ” would be more persuasive if they, in any real way, followed the actual teachings of Christ.

Postdoctoral Scholar - Research Associate at USC Learn more about applying for Postdoctoral Scholar - Research Associate at USC

I’m looking for a Postdoc to join my research group at the of Southern California @usc.edu (we’re moving to USC this August!) to work on exciting projects in stochastic and distributionally robust optimization, with real-world applications in healthcare, FL, and transportation. shorturl.at/5L4Ne

We take tariffs on our beautiful Heard Island very seriously. We will be consulting all mammals and flightless birds and will make an announcement in the near future detailing our response. #heardisland #tariff #mcdonaldisland #trumptariff

Your tariff rate is your star sign divided by the number of boys you've kissed, multiplied by one

Please someone bring boring politics back 🥴

Job opening at TU Graz: Full Professor Position for Computational Discrete Mathematics #orms

jobs.tugraz.at/en/jobs/dec7...

Tweet from Yuval Abraham: "A group of settlers just lynched Hamdan Ballal, co director of our film no other land. They beat him and he has injuries in his head and stomach, bleeding. Soldiers invaded the ambulance he called, and took him. No sign of him since."

BREAKING: Yuval Abraham, co-director of Oscar-winning documentary "No Other Land," says Israeli settlers beat his co-director Hamdan Ballal, injuring his head and stomach — and then Israeli soldiers invaded the ambulance he was in and seized him.

Ballal's whereabouts are now unknown.

OMG did y’all see this over at other place? Bunch of climate deniers wrote a “scientific paper” rebutting climate science basics (published in a BS fossil fuel industry front “journal”) and claimed *Grok* as the First Author.. BUT then, they were completely ripped to shreds by…Grok! Like a symphony👌🏻

"dei medal" you might as well just put "n*gger medal" because that's what they mean to say

Mark Carney, crisis-fighting central banker, hopes to lead Canada through trade war Mark Carney, the front-runner to become Canada's new prime minister, is a two-time central banker and crisis fighter who may soon face his biggest challenge of all: steering Canada through Donald Trump's tariffs.

The new Prime Minister of #Canada, Mark Carney, went to @harvard.edu, where he was a #hockey goalkeeper www.reuters.com/world/americ... Next month, I will be giving an invited talk, thanks to CORS (the Canadian OR Society) #orms.

Financial Stewardship Effective immediately, Harvard will implement a temporary pause on staff and faculty hiring across the University.

"Effective immediately, Harvard will implement a temporary pause on staff and faculty hiring across the University." Letter from the President of @harvard.edu on "Financial Stewardship." www.harvard.edu/president/ne...

Conformal Prediction with Upper and Lower Bound Models This paper studies a Conformal Prediction (CP) methodology for building prediction intervals in a regression setting, given only deterministic lower and upper bounds on the target variable. It propose...

For those of you interested in how to use conformal prediction to quantify the uncertainty of optimization proxies or, more generally, any function for which lower and upper bounds are available. By the talented Miao Li, Michael Klamkin, Mathieu Tanneau, and Reza Zandehshahvar.

An investigation has found 5 ActBlue-funded groups responsible for Tesla “protests”: Troublemakers, Disruption Project, Rise & Resist, Indivisible Project and Democratic Socialists of America. ActBlue funders include George Soros, Reid Hoffman, Herbert Sandler, Patricia Bauman, and Leah Hunt-Hendrix. ActBlue is currently under investigation for allowing foreign and illegal donations in criminal violation of campaign finance regulations. This week, 7 ActBlue senior officials resigned, including the associate general counsel. If you know anything about this, please post in replies. Thanks, Elon.

Musk is blaming "Herbert Sandler," among others, for secretly financing the protests and Tesla dealerships over the last few weeks.

Sandler died in 2019.

Other French universities are working on similar programs

The French government itself is also working on a plan

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...