Léo Belzile
@leobelzile.bsky.social
Associate professor at HEC Montréal. Gaspé peninsula native. Statistics of extremes. Mountain enthousiast, theatre aficionado.
De 3b à 4a en Gaspésie! Ressources Naturelles Canada a mis à jour les indices de rusticité des plantes. www.ledevoir.com/environnemen... Voir www.planthardiness.gc.ca?m=1&lang=fr Curieux de découvrir comment l'indice est déterminé (une régression linéaire avec des intrants quelque peu arbitraires).
Révision des zones de rusticité des plantes au Canada
Les changements climatiques ouvrent la porte à des espèces plus méridionales.
www.ledevoir.com
July 24, 2025 at 1:49 AM
De 3b à 4a en Gaspésie! Ressources Naturelles Canada a mis à jour les indices de rusticité des plantes. www.ledevoir.com/environnemen... Voir www.planthardiness.gc.ca?m=1&lang=fr Curieux de découvrir comment l'indice est déterminé (une régression linéaire avec des intrants quelque peu arbitraires).
Playing the genAI game with student assignments www.smbc-comics.com/comic/prompt
Saturday Morning Breakfast Cereal - Prompt
Saturday Morning Breakfast Cereal - Prompt
www.smbc-comics.com
July 16, 2025 at 2:33 AM
Playing the genAI game with student assignments www.smbc-comics.com/comic/prompt
Reposted by Léo Belzile
After two weeks, I'm finally done!
In this post, I explain different approaches for solving linear regression in R: directly, using QR, singular value and Cholesky decompositions, and do some benchmarking for comparison with in-built approaches.
thomvolker.github.io/blog/2506_re...
In this post, I explain different approaches for solving linear regression in R: directly, using QR, singular value and Cholesky decompositions, and do some benchmarking for comparison with in-built approaches.
thomvolker.github.io/blog/2506_re...
June 18, 2025 at 2:22 PM
After two weeks, I'm finally done!
In this post, I explain different approaches for solving linear regression in R: directly, using QR, singular value and Cholesky decompositions, and do some benchmarking for comparison with in-built approaches.
thomvolker.github.io/blog/2506_re...
In this post, I explain different approaches for solving linear regression in R: directly, using QR, singular value and Cholesky decompositions, and do some benchmarking for comparison with in-built approaches.
thomvolker.github.io/blog/2506_re...
Endpin, or no endpin, that is the question www.nytimes.com/2025/06/17/a...
Does It Matter How a Cello Is Held? It’s a Centuries-Old Debate.
www.nytimes.com
June 17, 2025 at 1:31 PM
Endpin, or no endpin, that is the question www.nytimes.com/2025/06/17/a...
Reposted by Léo Belzile
![5-panel comic. (1) [teacher with long hair next to whiteboard] TEACHER: I’m supposed to give you the tools to do good science. (2) [teacher addressing students] But what *are* those tools? Methodology is hard and there are so many ways to get incorrect results. What is the magic ingredient that makes for good science? (3) TEACHER: To figure it out, I ran a regression with all the factors people say are important: [embedded list in sub-panel, cut off at end] Outcome variable: correct scientific results. Predictors: collaboration; skepticism of others’ claims; questioning your own beliefs; trying to falsify hypotheses; checking citations; statistical rigor; blinded analysis; financial disclosure; open data (4) TEACHER: The regression says two ingredients are the most crucial: 1) genuine curiosity about the answer to a question, and 2) ammonium hydroxide. (5) STUDENT: Wait, why did *ammonia* score so high? How did it even get on the list? LONG HAIR: ...And now you’re doing good science!](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreigzaphhj4mfgfrxddlvdmw47335gnwzqbfqvrnff5x4oovgpf36nq@jpeg)
June 12, 2025 at 8:28 PM
Blatten in Loeschental wiped out from the map by the collapse of the Birch glacier, due to 9 millions tons of rocks falling from the Kleiner Nesthorn onto it. www.bbc.co.uk/news/resourc... www.rts.ch/info/regions... J'ai toujours aimer randonner dans cette vallée, c'est une tragédie.
Swiss glacier collapse: How the village of Blatten was wiped off the map - BBC News
Nine million cubic metres of rock and ice came crashing down on Blatten after a landslide.
www.bbc.co.uk
May 31, 2025 at 1:49 AM
Blatten in Loeschental wiped out from the map by the collapse of the Birch glacier, due to 9 millions tons of rocks falling from the Kleiner Nesthorn onto it. www.bbc.co.uk/news/resourc... www.rts.ch/info/regions... J'ai toujours aimer randonner dans cette vallée, c'est une tragédie.
Reposted by Léo Belzile
ICOTS -12th International Conference on Teaching Statistics, Brisbane, Australia.
Main Topic submissions closing soon (31 May 2025)!
🔗https://statsoc.org.au/event-6087045
📅 Conference from 12 to 17 July 2026
#statsed #edusky #statisticseducation
Main Topic submissions closing soon (31 May 2025)!
🔗https://statsoc.org.au/event-6087045
📅 Conference from 12 to 17 July 2026
#statsed #edusky #statisticseducation
May 14, 2025 at 1:06 AM
ICOTS -12th International Conference on Teaching Statistics, Brisbane, Australia.
Main Topic submissions closing soon (31 May 2025)!
🔗https://statsoc.org.au/event-6087045
📅 Conference from 12 to 17 July 2026
#statsed #edusky #statisticseducation
Main Topic submissions closing soon (31 May 2025)!
🔗https://statsoc.org.au/event-6087045
📅 Conference from 12 to 17 July 2026
#statsed #edusky #statisticseducation
Canadian Conference on Teaching Statistics (CanCOTS) taking place in downtown Montreal on June 11th-12th. Join us to work on collaborative projects related to statistical education. Details on the website, registration closes June 1st. cancots.netlify.app
CanCOTS 2025
cancots.netlify.app
May 7, 2025 at 2:11 AM
Canadian Conference on Teaching Statistics (CanCOTS) taking place in downtown Montreal on June 11th-12th. Join us to work on collaborative projects related to statistical education. Details on the website, registration closes June 1st. cancots.netlify.app
Reposted by Léo Belzile
Reposted by Léo Belzile
What if the Earth rotated 90 degrees?
Watch the latest What If? video collaboration with MinuteEarth!
youtu.be/WH4g1ptJ-70
Watch the latest What If? video collaboration with MinuteEarth!
youtu.be/WH4g1ptJ-70
What if the Earth rotated 90 degrees?
YouTube video by xkcd's What If?
youtu.be
April 2, 2025 at 6:54 PM
What if the Earth rotated 90 degrees?
Watch the latest What If? video collaboration with MinuteEarth!
youtu.be/WH4g1ptJ-70
Watch the latest What If? video collaboration with MinuteEarth!
youtu.be/WH4g1ptJ-70
Reposted by Léo Belzile
I taught a workshop on reproducible analysis workflows along with @egorkotov.bsky.social. Egor went all out in creating impeccable teaching materials. Check out his stuff on his personal webpage: www.ekotov.pro/2025-mpidr-o...
March 19, 2025 at 10:35 AM
I taught a workshop on reproducible analysis workflows along with @egorkotov.bsky.social. Egor went all out in creating impeccable teaching materials. Check out his stuff on his personal webpage: www.ekotov.pro/2025-mpidr-o...
Reposted by Léo Belzile
Reposted by Léo Belzile
Psych. Science just published a paper showing that the "warm glow" of donations can reduce depressive symptoms (d = [0.19, 0.46]).
Most impressively, "micro" donations (one Chinese cent, or $0.0014) appear sufficient to trigger these large effects.
Big if true? Let's dive in.
Most impressively, "micro" donations (one Chinese cent, or $0.0014) appear sufficient to trigger these large effects.
Big if true? Let's dive in.
March 11, 2025 at 6:05 PM
Psych. Science just published a paper showing that the "warm glow" of donations can reduce depressive symptoms (d = [0.19, 0.46]).
Most impressively, "micro" donations (one Chinese cent, or $0.0014) appear sufficient to trigger these large effects.
Big if true? Let's dive in.
Most impressively, "micro" donations (one Chinese cent, or $0.0014) appear sufficient to trigger these large effects.
Big if true? Let's dive in.
Less invasive radiotherapy treatment ahead, but access will remain a challenge www.bbc.com/future/artic...
The ultra-fast cancer treatments which could replace conventional radiotherapy
A pioneering new treatment promises to tackle a wider range of cancers, with fewer side-effects than conventional radiotherapy. It also takes less than a second.
www.bbc.com
January 23, 2025 at 2:16 PM
Less invasive radiotherapy treatment ahead, but access will remain a challenge www.bbc.com/future/artic...
High marks for 2024: we have reached +1.5C, with map showing roughly +3C for the North of Eastern Canada. www.bbc.com/news/article...
World's hottest year: 2024 first to pass 1.5C warming limit
Last year was the world's warmest on record, bringing temperatures above a politically symbolic milestone.
www.bbc.com
January 18, 2025 at 6:33 PM
High marks for 2024: we have reached +1.5C, with map showing roughly +3C for the North of Eastern Canada. www.bbc.com/news/article...
Reposted by Léo Belzile
"2024 Brought the World to a Dangerous Warming Threshold. Now What?" www.nytimes.com/interactive/... “The 1.5-degree target has created a lot of tension between rich and poor countries,”
January 11, 2025 at 5:53 AM
"2024 Brought the World to a Dangerous Warming Threshold. Now What?" www.nytimes.com/interactive/... “The 1.5-degree target has created a lot of tension between rich and poor countries,”
Transition énergétique et véhicules électriques: de l'importance de la planification à long terme et des incitatifs fiscaux (incluant la taxation) pour une transition réussie. www.bbc.com/news/article...
Norway on track to be first to go all-electric
Nine in 10 new cars in the country are now battery-powered, and it aims to hit 100% later this year.
www.bbc.com
January 13, 2025 at 2:34 PM
Transition énergétique et véhicules électriques: de l'importance de la planification à long terme et des incitatifs fiscaux (incluant la taxation) pour une transition réussie. www.bbc.com/news/article...