Marc Lanctot
@sharky6000.bsky.social
Research Scientist at Google DeepMind, interested in multiagent reinforcement learning, game theory, games, and search/planning.
Lover of Linux 🐧, coffee ☕, and retro gaming. Big fan of open-source. #gohabsgo 🇨🇦
For more info: https://linktr.ee/sharky6000
Lover of Linux 🐧, coffee ☕, and retro gaming. Big fan of open-source. #gohabsgo 🇨🇦
For more info: https://linktr.ee/sharky6000
T'is the season 🥰🎄
November 22, 2025 at 12:09 AM
T'is the season 🥰🎄
I love this photo (screenshot from LinkedIn). Imagine trying to explain one of your academic posters to the prime minister! 😅
November 12, 2025 at 1:08 AM
I love this photo (screenshot from LinkedIn). Imagine trying to explain one of your academic posters to the prime minister! 😅
But it *is* scary..... 😱
November 8, 2025 at 12:40 AM
But it *is* scary..... 😱
Halt and Catch Fire!
November 5, 2025 at 1:55 AM
Halt and Catch Fire!
Got to see Back to the Future in a movie theatre tonight! 🤩
40th Anniversary Release. Quality was amazing. 👍👍👍
40th Anniversary Release. Quality was amazing. 👍👍👍
November 3, 2025 at 12:50 AM
Got to see Back to the Future in a movie theatre tonight! 🤩
40th Anniversary Release. Quality was amazing. 👍👍👍
40th Anniversary Release. Quality was amazing. 👍👍👍
One down, let's go @torontobluejays.bsky.social ! ⚾️🐦🙌
November 2, 2025 at 12:18 AM
One down, let's go @torontobluejays.bsky.social ! ⚾️🐦🙌
Welcome AI newcomers! 🙏🦋
Check out the cool new hat my wife and son found for me on Father's day earlier this year...
😁💙
Check out the cool new hat my wife and son found for me on Father's day earlier this year...
😁💙
October 27, 2025 at 12:34 AM
Welcome AI newcomers! 🙏🦋
Check out the cool new hat my wife and son found for me on Father's day earlier this year...
😁💙
Check out the cool new hat my wife and son found for me on Father's day earlier this year...
😁💙
Here's what Gemini thinks you look like. How close was Gemini to the truth?
October 19, 2025 at 1:47 AM
Here's what Gemini thinks you look like. How close was Gemini to the truth?
Meet Chuck from Canada. Don't mess with Chuck, he'll knock your teeth out before you can say "double double", eh
October 19, 2025 at 1:32 AM
Meet Chuck from Canada. Don't mess with Chuck, he'll knock your teeth out before you can say "double double", eh
My feed is hilarious tonight. Half of the posts are photos from various "No Kings" protests.
The other half are posts about this AGI definition paper with fake references.
So I asked Gemini to summarize my timeline and here you go:
@void.comind.network wdyt?
The other half are posts about this AGI definition paper with fake references.
So I asked Gemini to summarize my timeline and here you go:
@void.comind.network wdyt?
October 19, 2025 at 12:50 AM
My feed is hilarious tonight. Half of the posts are photos from various "No Kings" protests.
The other half are posts about this AGI definition paper with fake references.
So I asked Gemini to summarize my timeline and here you go:
@void.comind.network wdyt?
The other half are posts about this AGI definition paper with fake references.
So I asked Gemini to summarize my timeline and here you go:
@void.comind.network wdyt?
Joint work with:
Wolfgang Lehrach*, Daniel Hennes, Miguel Lázaro-Gredilla*, Xinghua Lou, Carter Wendelken, @lizun.bsky.social, Antoine Dedieu, Jordi Grau-Moya, Atil Iscen, John Schultz, Marcus Chiam, @drimgemp.bsky.social, Piotr Zielinski, @satindersingh.bsky.social, @sirbayes.bsky.social 22/N
Wolfgang Lehrach*, Daniel Hennes, Miguel Lázaro-Gredilla*, Xinghua Lou, Carter Wendelken, @lizun.bsky.social, Antoine Dedieu, Jordi Grau-Moya, Atil Iscen, John Schultz, Marcus Chiam, @drimgemp.bsky.social, Piotr Zielinski, @satindersingh.bsky.social, @sirbayes.bsky.social 22/N
October 9, 2025 at 7:27 PM
Joint work with:
Wolfgang Lehrach*, Daniel Hennes, Miguel Lázaro-Gredilla*, Xinghua Lou, Carter Wendelken, @lizun.bsky.social, Antoine Dedieu, Jordi Grau-Moya, Atil Iscen, John Schultz, Marcus Chiam, @drimgemp.bsky.social, Piotr Zielinski, @satindersingh.bsky.social, @sirbayes.bsky.social 22/N
Wolfgang Lehrach*, Daniel Hennes, Miguel Lázaro-Gredilla*, Xinghua Lou, Carter Wendelken, @lizun.bsky.social, Antoine Dedieu, Jordi Grau-Moya, Atil Iscen, John Schultz, Marcus Chiam, @drimgemp.bsky.social, Piotr Zielinski, @satindersingh.bsky.social, @sirbayes.bsky.social 22/N
We see that we beat Gemini 2.5 on 4 of the 5 games, and tie it in the case of tic-tac-toe. (Interestingly, Gemini 2.5 often does not even play legal moves, and hence loses by forfeit, even for existing (non-novel) games such as Backgammon which are part of its training set.) 19/N
October 9, 2025 at 7:27 PM
We see that we beat Gemini 2.5 on 4 of the 5 games, and tie it in the case of tic-tac-toe. (Interestingly, Gemini 2.5 often does not even play legal moves, and hence loses by forfeit, even for existing (non-novel) games such as Backgammon which are part of its training set.) 19/N
Below we show an example of a test for T for tic-tac-toe, where the action corresponds to x-player choosing location (1,0). 10/N
October 9, 2025 at 7:27 PM
Below we show an example of a test for T for tic-tac-toe, where the action corresponds to x-player choosing location (1,0). 10/N
The world model can be interpreted as a Partially Observed Stochastic Game, which is represented below as a causal graphical model. All transitions are deterministic, but stochasticity can be introduced via hidden random actions chosen by the chance player. 4/N
October 9, 2025 at 7:27 PM
The world model can be interpreted as a Partially Observed Stochastic Game, which is represented below as a causal graphical model. All transitions are deterministic, but stochasticity can be introduced via hidden random actions chosen by the chance player. 4/N
Hello all! 👋 🚨 New Preprint Alert! 🚨
Code World Models for General Game-Playing. ♟️🎲 ♣️♥️♠️♦️
I am pleased to announce our new paper, which provides an extremely sample-efficient way to create an agent that can perform well in multi-agent, partially-observed, symbolic environments!
🧵 1/N
Code World Models for General Game-Playing. ♟️🎲 ♣️♥️♠️♦️
I am pleased to announce our new paper, which provides an extremely sample-efficient way to create an agent that can perform well in multi-agent, partially-observed, symbolic environments!
🧵 1/N
October 9, 2025 at 7:27 PM
Hello all! 👋 🚨 New Preprint Alert! 🚨
Code World Models for General Game-Playing. ♟️🎲 ♣️♥️♠️♦️
I am pleased to announce our new paper, which provides an extremely sample-efficient way to create an agent that can perform well in multi-agent, partially-observed, symbolic environments!
🧵 1/N
Code World Models for General Game-Playing. ♟️🎲 ♣️♥️♠️♦️
I am pleased to announce our new paper, which provides an extremely sample-efficient way to create an agent that can perform well in multi-agent, partially-observed, symbolic environments!
🧵 1/N
I bought this book because it had smaller adventures that were mostly self-contained but (IIRC) set in the same world/setting. Also mystery-based so it's more of a whodunit than a hack-n-slash. I think they were also possible to do solo. I never got to try any yet, though, but it had great reviews!
August 26, 2025 at 9:52 PM
I bought this book because it had smaller adventures that were mostly self-contained but (IIRC) set in the same world/setting. Also mystery-based so it's more of a whodunit than a hack-n-slash. I think they were also possible to do solo. I never got to try any yet, though, but it had great reviews!
This starter set was quite nice. Characters already made and the story was simple enough, and not too crazy on the gore / combat. It didn't go super well with a group of 4-5 eight year-olds, though: I was out of practice as a DM and they were maybe a year too young.
August 26, 2025 at 9:48 PM
This starter set was quite nice. Characters already made and the story was simple enough, and not too crazy on the gore / combat. It didn't go super well with a group of 4-5 eight year-olds, though: I was out of practice as a DM and they were maybe a year too young.
Oops, forgot the pics for Doublecross, here they are:
August 17, 2025 at 2:07 AM
Oops, forgot the pics for Doublecross, here they are:
Just finished Romania castle! Wow, that one was another tough one.. and super long. Took several tries, and over two hours to finish all told. This one gets you to go around the whole castle many, many times. A few of the top rooms require some ingenuity. Very well designed. Three more to go!
August 16, 2025 at 2:57 PM
Just finished Romania castle! Wow, that one was another tough one.. and super long. Took several tries, and over two hours to finish all told. This one gets you to go around the whole castle many, many times. A few of the top rooms require some ingenuity. Very well designed. Three more to go!