Lightnews — Scholar-powered news

Reposted by Pablo Samuel Castro

Marc Lanctot @sharky6000.bsky.social · 9d

Hello everyone 👋 Good news!

🚨 Our Game Theory & Multiagent Systems team at Google DeepMind is hiring! 🚨

.. and we have not one, but two open positions! One Research Scientist role and one Research Engineer role. 😁

Please repost and tell anyone who might be interested!

Details in thread below 👇

1 8 15

Pablo Samuel Castro @pcastr.bsky.social · 9d

this was a really great workshop at @rl-conference.bsky.social , and i enjoyed giving a talk and moderating a panel there.
everything was recorded, so if you weren't able to join, you can watch it now, link below.

RL and Video Games Workshop @ RLC 2025 @rlvgworkshop.bsky.social · 13d

Missed our workshop at @rl-conference.bsky.social?
Watch all keynote presentations and the panel discussion on YouTube:

youtube.com/playlist?lis...

Big thanks to our awesome speakers: @togelius.bsky.social, @jmac-ai.bsky.social, Roberta Raileanu, Michael Bowling and @pcastr.bsky.social!

RLVG Sessions @ RLC 2025 - YouTube

Recorded sessions of the Reinforcement Learning and Video Games (RLVG) workshop at the Reinforcement Learning Conference (RLC), 2025. Recorded on August 5, 2025

youtube.com

8

Pablo Samuel Castro @pcastr.bsky.social · 13d

Today's wordle covered me

Wordle 1,559 2/6

🟩🟩🟨🟨⬛
🟩🟩🟩🟩🟩

2

Reposted by Pablo Samuel Castro

lasalaai.bsky.social @lasalaai.bsky.social · Sep 3

📢MARK YOUR CALENDARS!🗓️
The Summit of AI in Latin America (SALA, formerly RIIAA) is happening in Quito, Ecuador, March 9-12, 2026, at USFQ!

Want to attend and apply for travel grants? Do so here before October 1st:
forms.gle/PgYUQ2urGNTs...

More details in thread 👇🏾🧵

1 3 3

Pablo Samuel Castro @pcastr.bsky.social · 18d

Very happy this work got into #NeurIPS2025, it was a big effort that Reggie led, and I'm glad it was worth the work!
We've already been using Meta world+ in a lot of our research, and so should you!
Let's chat at #NeurIPS2025 !

Reggie McLean @reggiemclean.bsky.social · 19d

Proud to announce that Meta-World+ was accepted to NeurIPs, Datasets and Benchmarks! Meta-World is a common benchmark for multi-task and meta-RL research! However, it was very difficult to do effective science with Meta-World as different versions produce different results.

1 5

Pablo Samuel Castro @pcastr.bsky.social · 26d

Unfortunately I won't be at COLM, but hope you can still get some running in!

1

Pablo Samuel Castro @pcastr.bsky.social · 28d

Caught my 11yo reading this, I'm so proud.

7

Pablo Samuel Castro @pcastr.bsky.social · Sep 3

want to help shape the future of AI in latin america? then don't miss out on @lasalaai.bsky.social next march!
the past instances of this event have been truly fantastic, and i'm super pumped for the next one next year. don't miss out and apply today!
hope to see you in quito!! ♥️🇪🇨

lasalaai.bsky.social @lasalaai.bsky.social · Sep 3

📢MARK YOUR CALENDARS!🗓️
The Summit of AI in Latin America (SALA, formerly RIIAA) is happening in Quito, Ecuador, March 9-12, 2026, at USFQ!

Want to attend and apply for travel grants? Do so here before October 1st:
forms.gle/PgYUQ2urGNTs...

More details in thread 👇🏾🧵

6 10

Pablo Samuel Castro @pcastr.bsky.social · Sep 1

Today's wordle was pretty minimal

Wordle 1,535 2/6

⬛🟩🟩⬛🟩
🟩🟩🟩🟩🟩

1

Pablo Samuel Castro @pcastr.bsky.social · Aug 25

Software engineering isn't dead, it just smells funny.

1

Pablo Samuel Castro @pcastr.bsky.social · Aug 11

It was too hard to pick only four pictures, so here are a few more:

5

Pablo Samuel Castro @pcastr.bsky.social · Aug 11

Yesterday I did a 28.4k trail run and 1300m climb with some good friends (& colleagues). It was absolutely incredible! This was my first trail run, but now I think I'm hooked!
#trailrunpostconference

1 18

Pablo Samuel Castro @pcastr.bsky.social · Aug 9

Videos for all keynotes will be released at some point in the near future.

1 3

Pablo Samuel Castro @pcastr.bsky.social · Aug 9

Once again, I leave @rl-conference.bsky.social convinced that it's the best conference out there for RL researchers, such a great week!
It was also so great getting the opportunity to see so many of my students shine while presenting and discussing their research!

2 14

Pablo Samuel Castro @pcastr.bsky.social · Aug 9

Did the last #runconference @rl-conference.bsky.social this morning, fun as always.

Until the next time (NeurIPS?)!

3

Pablo Samuel Castro @pcastr.bsky.social · Aug 9

Was great listening to Turing award winner Rich Sutton tell us about his vision for the future of RL (and AI) @rl-conference.bsky.social !

2 1 15

Pablo Samuel Castro @pcastr.bsky.social · Aug 8

Great talk by Peter Dayan @rl-conference.bsky.social exploring the "open marriage" between natural and engineered reinforcement learning.

1 6

Pablo Samuel Castro @pcastr.bsky.social · Aug 8

Great #runconference @rl-conference.bsky.social today (even with a little rain), join for the last one tomorrow morning, 6:30am, meet at Garneau Lamp!

1

Pablo Samuel Castro @pcastr.bsky.social · Aug 7

😁

2 1 9

Pablo Samuel Castro @pcastr.bsky.social · Aug 7

today (thu) @rl-conference.bsky.social come see our paper "Optimistic critics can empower small actors"
olya and dhruv will present the oral at 11:45am in the deep RL track (CCIS 1-430)
and we'll present the poster (poster#8) 3-5:45pm

come chat with us about asymmetric actor-critics!

Pablo Samuel Castro @pcastr.bsky.social · Jun 3

📢optimistic critics can empower small actors📢

new @rl-conference.bsky.social paper led by my students @olyamhina.bsky.social & dhruv!
we study actor-critic agents w/ asymmetric setups and find that, while smaller actors have advantages, they can degrade performance and result in overfit critics
1/

1 4

Pablo Samuel Castro @pcastr.bsky.social · Aug 7

Very honoured that our paper was granted an outstanding paper award for scientific understanding in RL during the @rl-conference.bsky.social banquet!
@reggiemclean.bsky.social and Evangelos deserve the bulk of the credit, so congrats to them and all the other awards winners!

2 2 14

Pablo Samuel Castro @pcastr.bsky.social · Aug 6

3

Pablo Samuel Castro @pcastr.bsky.social · Aug 6

Super thought-provoking talk by Dale Schuurmans @rl-conference.bsky.social on LLMs and computation, and why value-based RL doesn't (or can't?) work for post-training.

2 12

Pablo Samuel Castro @pcastr.bsky.social · Aug 6

Second #runconference today went well, join us tomorrow same place (Garneau Lamp), same time (6:30am)!

3

Pablo Samuel Castro @pcastr.bsky.social · Aug 6

today (wed) @rl-conference.bsky.social come see our paper "Multi-Task Reinforcement Learning Enables Parameter Scaling"

@reggiemclean.bsky.social will give oral at 10:20am in CCIS 1-160
and we'll present the poster 3-5:45pm

come chat!

rlj.cs.umass.edu/2025/papers/...

bsky.app/profile/regg...

2