Valentyn Melnychuk 🇺🇦
@valik-melnychuk.bsky.social
PhD Candidate at Institute of AI in Management, LMU Munich causal machine learning, causal inference
[1/4] 🇰🇷 Excited to present our new paper “Frequentist Consistency of Prior-Data Fitted Networks for Causal Inference” at ICML 2026 in Seoul. The paper asks a simple question: when PFNs are used for causal inference, do their uncertainty estimates actually agree with classical frequentist inference?
🚨 BREAKING: Russian strike hits the historic Kyiv Pechersk Lavra, a world-famous Orthodox monastery and UNESCO site, igniting fire on the roof of the Dormition Cathedral.
📢Checkout our new overview on #CausalML in Wiley #StatsRef 👉We give a concise overview of ML for causal inference — incl. IPTW, AIPTW, TMLE, meta-learners, Neyman orthogonality, ... 📄 doi.org/10.1002/9781... (or PM me) with @larsvanderlaan3.bsky.social @valik-melnychuk.bsky.social
“That day, we realized the Russians had come to kill us” is how one theater survivor put it to me. “They didn’t come to fight with Ukrainian soldiers. They just wanted to kill us.” from James Verini, an excerpt from his book "The Theater" www.theatlantic.com/internationa...
Surviving Mariupol
How the Drama Theater became an emblem of Ukrainian resistance under siege
theatlantic.com
[1/5] 🇲🇦 Today I’m presenting our paper “Orthogonal Representation Learning for Estimating Causal Quantities” at AISTATS 2026 in Tangier, Morocco; and I’m very happy that it was accepted as an oral.
[1/5] 🇧🇷 Looking forward to presenting our new paper, “Overlap-Adaptive Regularization for Conditional Average Treatment Effect Estimation,” at ICLR 2026 in Rio de Janeiro. The paper tackles a core challenge in causal ML: estimating treatment effects when overlap is low.
[1/4] 🇧🇷 Excited to share our new paper, “GDR-learners: Orthogonal Learning of Generative Models for Potential Outcomes,” which I’ll be presenting at ICLR 2026. The goal: better estimate potential outcome distributions from observational data — not just averages, but the full uncertainty.
”The consequence of a newly unreliable and even hostile United States, therefore, will likely be significant military buildups by former allies. This will not mean sharing the burden of collective security, because these rearmed nations will no longer be American allies.”
America vs. the World
President Trump wants to return to the 19th century’s international order. He will leave America less prosperous—and the whole world less secure.
theatlantic.com
If Europe ends up buying Russian oil refined in India, through the new India-E.U trade deal, I will have an aneurism.
So there’s a website called Deer Of St Nicholas which posts Christmas wish letters from Ukrainian children who had their childhood stolen by the war, anyone can pick a child and get them their present and it’s that time of the year again to achingly scroll it for hours again
Timeline is just death, death, bodies, explosions, rubble, death, when will this day be over
“The United States remains committed to supporting the Russian people as they continue to build on their aspirations for a brighter future”
Mira of Kyiv 🇺🇦@reshetz.bsky.social · last yr.Okay so I’m physically sick
🧵 1/3 Dear friends, I ask everyone again for help! You know the situation in Ukraine is tough at the moment: After the deadly attack on Sumy in Ukraine last Sunday I felt speechless. Yet there is a way to help and even a small contribution might eventually save someone’s life.
A grim reminder of the real nature of the “Christian Europe” that Putin and his far-right stooges have in store for us all.
Mira of Kyiv 🇺🇦@reshetz.bsky.social · last yr.Sumy, Ukraine. People gathered for Sunday church services. At least 21 dead
me trying to cut my ICML rebuttal down to <5000 characters
Drawings by one of the children abducted by Russia and returned from captivity. Ilya, 11, from Mariupol
Fact this only has 233 likes on X tells you how Musk runs his propaganda algorithm
Alina Poliakova 🇺🇦@poliakova.bsky.social · last yr.
Countless emails asking how Americans can directly aid Ukrainian soldiers. Here’s an easy answer: savelife.in.ua/en/
Come Back Alive Foundation - Charity Organization
One of the top charity organizations who help the Ukraine Army since 2014. Donate via the website - 100% of proceeds go directly to Ukraine Army.
savelife.in.ua
Catherine from Zaporizhzhia. She spent 5 hours under the rubble of her house, destroyed by a Russian missile. All this time she has been hugging her cat. P.S. Sorry she didn't wear a suit.
Over the last month we’ve seen the death of the post-WW2 era of American allegiance with Europe and most Americans don’t even know it happened
Ulrike Franke@rikefranke.bsky.social · last yr.The Guardian with an even harsher take
Guys, I get that the instinct is to save face, but don’t downplay this as mere rhetoric. This is the U.S. abandoning all its international integrity and dismantling the post-war, rules-based order. You need to do something about it now!
George Pearkes@peark.es · last yr.This seems like pretty classic rhetorical posturing tbh, classic Trump cheap talk.
Once again I am leaving the Munich Security Conference in a low mood. Amongst all the noise, the US signalled their plans for Europe, so things are becoming clearer. But things are clearly not good. This is what we now know, and what we have to do about it:🧵1/17
1/n Excited to present our new work, done at the van der Schaar Lab at the Cambridge University together with Mihaela van der Schaar and Stefan Feuerriegel. 📍7008 western ballroom, 11:00-14:00 #NeurIPS2024
✈️ Attending #NeurlPS2024. If you fancy grabbing a coffee and chatting about causal machine learning, drop me a message
