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The One Big Beautiful Blog on Group Relative Policy Optimization (GRPO)

https://pramodith.github.io/posts/grpo-trainer/
2•Pramodith•3h ago

Comments

Pramodith•3h ago
I created a super-comprehensive GRPO Tutorial, where you can learn to code up your own GRPO Trainer. In addition to the code I also go through the math and highlight some of the interesting properties of the GRPO loss like why the loss will always be 0 at step 0 and why the policy loss will always be 0 when the num iterations (mu) hyper-parameter is set to 1. Appreciate any feedback!

Screen time and emotional problems in kids: A vicious circle?

https://www.apa.org/news/press/releases/2025/06/screen-time-problems-children
1•cmsefton•17s ago•0 comments

Texas Cyber Command and 2025's Biggest Cyber Threats

https://www.texascybersolutions.com/texas-cyber-command-2025-threats-news/
1•bhartzer•30s ago•0 comments

Electronic Screen Use and Children's Socioemotional Problems [pdf]

https://www.apa.org/pubs/journals/releases/bul-bul0000468.pdf
1•domofutu•46s ago•0 comments

Your Job Now: Be the Outlier

https://quic.video/blog/be-the-outlier
1•kixelated•52s ago•0 comments

GifCities 2.0: semantic search of GeoCities GIFs

https://blog.archive.org/2025/06/09/keep-on-gifin-a-new-version-of-gifcities-internet-archives-geocities-animated-gif-search-engine/
1•caycep0llard•1m ago•1 comments

The psychedelic origins, and future, of Western thought

https://iai.tv/articles/the-psychedelic-origins-and-future-of-western-thought-auid-3186
1•miles•1m ago•0 comments

To the Guy I Didn't Invite to My Wedding

https://quarter--mile.com/To-the-Guy-I-Didn-t-Invite-to-My-Wedding
1•ambigious7777•1m ago•0 comments

Show HN: ReqVis – A Web Request Visualizer

https://github.com/ibudiallo/reqvis
1•foxfired•3m ago•0 comments

The Build Quality of e-readers is suffering

https://goodereader.com/blog/electronic-readers/the-build-quality-of-e-readers-is-suffering
1•giuliomagnifico•5m ago•0 comments

OpenFEC

https://github.com/fecgov/openFEC
2•m-hodges•5m ago•0 comments

Ask HN: How do I take an LLM with me when I go camping?

1•Drblessing•7m ago•1 comments

Life in Chengdu as an Expat

https://mighil.com/life-in-chengdu-as-an-expat
1•speckx•7m ago•0 comments

Apple Just Sherlocked Docker

https://xeiaso.net/notes/2025/dubdub/
2•hasheddan•7m ago•1 comments

Acceptable use requirements for the Foundation Models framework

https://developer.apple.com/apple-intelligence/acceptable-use-requirements-for-the-foundation-models-framework/
1•elpakal•9m ago•1 comments

New: Free AI Education Course

https://www.joinwedo.org/impact/wedo-ai-for-small-business/
1•monisha_Posting•10m ago•1 comments

Kurt – Copilot for Music Production

https://trykurt.com/
3•toofi•12m ago•0 comments

Universal Basic Income isn't about free money – it's about a freer life

https://medium.com/blog/universal-basic-income-isnt-about-free-money-it-s-about-a-freer-life-48dc2ea69f20
8•rbanffy•13m ago•6 comments

Show HN: A free tool to validate your email template

https://selfmailkit.com/tools/email-template-validation/
2•javidabd•14m ago•0 comments

A Plan for SIMD

https://linebender.org/blog/a-plan-for-simd/
1•thunderbong•17m ago•0 comments

I Just Launched My "Start a Local Website Business" Helping Kit

https://0x7bshop.gumroad.com/l/tnuzmr
1•0x2e-tech•20m ago•0 comments

WebKit in Safari 26 beta

https://webkit.org/blog/16993/news-from-wwdc25-web-technology-coming-this-fall-in-safari-26-beta/
2•alwillis•21m ago•0 comments

"I Hallucinated a Team" – How Far Can Vibe Coding Go?

https://accelerateordie.com/p/i-hallucinated-a-team-my-interview
3•MediaSquirrel•22m ago•5 comments

Rapid Team Transition to a Bevy-Based Engine (JP) [video]

https://www.youtube.com/watch?v=cKSTCA-rc0Y
1•todsacerdoti•22m ago•0 comments

A Blockbuster 'Muon Anomaly' May Have Just Disappeared

https://www.scientificamerican.com/article/a-blockbuster-muon-anomaly-may-have-just-disappeared/
1•thunderbong•25m ago•1 comments

Ask HN: Are there any websites, yet that show new Apple liquid glass effects?

1•commanderj•26m ago•0 comments

The Banks Are Re-Tranching

https://www.bloomberg.com/opinion/newsletters/2025-06-09/the-banks-are-re-tranching
3•ioblomov•28m ago•1 comments

Is the AI Bubble About to Burst?

https://www.versobooks.com/blogs/news/is-the-ai-bubble-about-to-burst
4•Traces•29m ago•1 comments

The Bethesda Declaration

https://www.standupforscience.net/bethesda-declaration
1•colingauvin•32m ago•0 comments

Free and open-source to-do list tracker has changed my life

https://www.xda-developers.com/free-open-source-to-do-list-tracker-has-changed-my-life/
1•cvicpp123•32m ago•0 comments

Show HN: Teach Yourself Systems – Zero-Install Python Sims for Systems Thinking

https://teachyourselfsystems.com/
1•andreisavu•33m ago•0 comments