Arthur Charpentier
@freakonometrics.bsky.social
Dad of 3 & born-again mathematician. Statistician, economist, fellow actuary & data addict. Professor & researcher in Kyoto 京都 🇯🇵. Previously in Montréal 🇨🇦, Paris 🇫🇷, Hong Kong 🇭🇰, Leuven 🇧🇪 & Rennes 🇫🇷. Full of 'satiable curtiosity
"Prediction Markets Let You Bet on Whether a Wildfire Will Burn Down Your Town" www.wired.com/story/predic...
Prediction Markets Let You Bet on Whether a Wildfire Will Burn Down Your Town
Wildfire survivors call fire-prediction markets “morally reprehensible” and worry they could increase the risk of arson.
wired.com
"Risk-Priced Society: Insurance, Algorithms, and Climate in the Age of Prediction" is available online, for open review until the end of the year freakonometrics.github.io/risk-priced-... all comments are welcome !
"La société au prix du risque: Assurance, algorithmes et climat à l’âge de la prédiction" freakonometrics.github.io/risk-priced-... en open review et entièrement disponible jusqu'à la fin de l'année (aussi disponsible en pdf)
"La technologie nous sauvera-t-elle ?" dans le numéro d'été de la revue Risques freakonometrics.hypotheses.org/files/2026/08/Arthur_in_Risques_146.pdf
"He has said he expects AI to soon do everything mathematicians do, only better and faster, and that the discipline he has spent his career in is likely to look unrecognizable within a matter of years." officechai.com/ai/fields-me...
Fields Medal Winner Jacob Tsimerman Joins OpenAI, Says AI Will Soon Do Everything Mathematicians Do "Better And Faster"
Even as more and more people are publishing proofs of decade-old conjectures using AI, this year’s Fields medalist — the highest prize in...
officechai.com
"What It Means to Be a Mathematician When AI Does the Math" spectrum.ieee.org/ai-in-mathem...
What it Means to Be a Mathematician When AI Does the Math
Researchers debate motivation, purpose, and the field’s future
spectrum.ieee.org
"Europe's flash drought comes as heat causes 'atmospheric thirst" www.ft.com/content/540f... see also "Increasingly hot Europe faces more Severe Droughts and Growing Challenges for Water and Land Management" www.worldweatherattribution.org/increasingly...
"Train au Japon" youtube.com/watch?v=vbflY7eLaCs (le sous-titre est un peu trompeur parce que ça propose surtout un vision très intéressante historique, géographique et culturelle du train au Japon - personnage central dans le roman de mon année au Japon)
Train au Japon : La face cachée du réseau le plus fiable du monde
YouTube video by HOURRAIL !
youtube.com
"Personne ne sait comment assurer l’IA" www. gargantia.eu/email/b844635a-733b-4609-ae23-ddc2edc92734/ par @nicolaskb.bsky.social
Personne ne sait comment assurer l’IA
Les assureurs ne savent pas comment mesurer les risques inhérents aux systèmes d’IA. Les régulateurs non plus. Pour les assuré·es, la couverture pourrait se réduire considérablement. Bienvenue dans...
gargantia.eu
"Comment les maths modernes ont traumatisé toute une génération" www.youtube.com/watch?v=5Y5c...
Comment les maths modernes ont traumatisé toute une génération
YouTube video by Monsieur Haag
youtube.com
"People are making wildfire bets on prediction markets. Experts say it could lead to disaster" edition.cnn.com/2026/07/17/c...
People are making wildfire bets on prediction markets. Experts say it could lead to disaster | CNN
As the catastrophic Los Angeles wildfires raged last year, people placed bets on how how many acres the fires would consume, which locations they would reach and when they would be contained.
edition.cnn.com
In two weeks, my sabbatical year at Kyoto University will come to an end...
"June heatwave may have killed around 20,000 people in Europe" www.newscientist.com/article/2532... see zenodo.org/records/2108...
I have just uploaded my lecture notes Optimal Transport for Actuarial Science (hal.science/hal-05684645...). This is a working draft. In the Fall, I plan to add more figures across chapters. But the general structure is now in place, and comments, corrections and suggestions are very welcome.
"Record-shattering March temperatures in Western North America virtually impossible without climate change" www.worldweatherattribution.org/record-shatt...
Record-shattering March temperatures in Western North America virtually impossible without climate change – World Weather Attribution
worldweatherattribution.org
In Japan (bsky.app/profile/frea...) see www.wbgt.env.go.jp/en/wbgt.php and jsite.mhlw.go.jp/toyama-roudo... At a WBGT of 31 or above (air temperature ≥ 35 ℃), exercise should be prohibited, except in special cases.
"La canicule épuise, fait souffrir, tue, et c’est un festival, chaque jour, de déclarations hors-sol de politiques et de privilégiés tentant de masquer leur responsabilité. Leur seule chance étant qu’il fait trop chaud pour tout cramer" www.liberation.fr/societe/sant...
En colère, moi, mes patients, et les pauvres qui en crèvent ? Qu’est-ce qui vous fait croire ça ?
Christian Lehmann, médecin et écrivain, revient aujourd'hui dans sa chronique sur les ravages de la canicule sur les organismes et l’incurie des politiques.
liberation.fr
En France, "Comment boire de l'eau : la parodie virale qui expose la crise de confiance envers l'État" planet.fr/societe-comment-boire-de-leau-la-parodie-virale-qui-expose-la-crise-de-confiance-envers-letat.2997699.29336.html
"The price of proof: insurance policies for an AI-enabled world" theactuary.com/2026/06/25/price-proof-insurance-policies-ai-enabled-world
The price of proof: insurance policies for an AI-enabled world
Rising AI use among businesses brings risks both new and old, leading to demand for updated forms of insurance. Such policies need to be constructed carefully
theactuary.com
"The life secrets of those who flailed early but succeeded by old age" www.theatlantic.com/ideas/archiv...
You Might Be a Late Bloomer
The life secrets of those who flailed early but succeeded by old age
theatlantic.com
October 6-7, 2026, at Université Laval, in Québec City, we organize the 3rd edition of our "Workshop on Fairness and Discrimination in Insurance" ! event.fourwaves.com/aeda2027/pages Registration is now open #SaveTheDate
