Prossimo
But what is cross-entropy? | Compression is Intelligence Part 2 34 min 
我喜欢的人很优秀，所以我也要努力变得更好 #有兽焉 #国漫 #shorts #donghua #madebybilibili 【加入会员专享最新集】 1 min 
They Crash-Landed on an Unknown Planet… Unaware That Horrifying Creatures Ruled It 11 min 
The End of Oak Street Exclusive Movie Clip - Dino Attacks Parents (2026) 3 min 
The tragedy of Cassandra, the princess who predicted the fall of Troy - Iseult Gillespie 5 min 
天圣教教主秦牧亲自前来，陛下还不跪迎？#牧神记 #国漫 #shorts #donghua #madebybilibili 【加入会员专享最新集】 1 min 
《万古至尊：李云霄传》第17话：千与幻阵【热血 | 玄幻 | 战斗 | Made By Bilibili】 12 min 
The NFL's Concussion Crisis 22 min 
The Polar Cruisers: Winter Climb to the Hanging Cities | AI 4K — Retrofutura 8 min 
Why your best ideas usually start as bad ones | Think Like A Musician 5 min 
How I Made My 2025 Secret Santa's year THE BEST 16 min 
Hurricane vs. Tiny Houses 23 min 
KOLD MIRAGE 4 min 
The Dark Side of the World’s Lightest Structural Metal 16 min 
Digging a SECRET GARAGE Part 5 Major Progress 39 min 
ASH 5 min 
How We Built the ISS - Part 2 29 min 
Животный сервер! 🐀🐷🐤 (GTARP) 9 min 
Меня обижают (Мозоль) 15 min 
How a broken heart affects your body 6 min 
The #1 Worst Drink for Your Gut 2 min 
COMPILATION: Fascinating Horror Shorts 31 - 60 | Fascinating Horror 27 min 
Sean McVay on handling the pressure of NFL success #shorts 1 min 
How ICE's Surveillance System Works 21 min 
This Poodle Killed Three People | Fascinating Horror Shorts 1 min 
HEATWAVE SOLVED 2 min 
Embarrassing Behavior 15 min 
Plasma Globe Can Be a Fire Hazard #experiment #technology #science #funny 1 min 
Will gas prices decide the midterms? | America, Actually 28 min 
We can't invent a robot better than these ferrets 22 min 
Hackers Don’t Take Coffee Breaks ☕ 1 min 
How Liquid Dampers in Skyscrapers Work 20 min 
AI Model vs Agentic Harness: What Actually Drives AI 9 min 
Why Are There No Short Arch Dams? 17 min 
Why Roads Get Washboards 18 min 
What’s at the center of the earth?: Crash Course Geology #4 10 min 
The call is coming from inside the house 2 min 
What your language says about you 8 min 
Earth's Crust and Mantle Explained: Crash Course Geology #3 11 min 
Evaluating Sources & Fact Checking: Crash Course Scientific Thinking #6 11 min 
How porn completely changes your brain 9 min 
Why Texas Wins 20 min 
Is the Yellowstone volcano going to erupt again? 🌋 2 min 
RESONANCE A PLAGUE TALE LEGACY Walkthrough Gameplay Part 1 - INTRO (FULL GAME) 111 min 
🇵🇹 | United as one 1 min 
The Boys Make a Desperate Train Escape | Stand by Me 6 min 
Why Marvel Cancelled So Many Projects 11 min 
Stuntman: Hollywood - Jurassic World Reveal Trailer | PS5 Games 2 min 
S.W.A.T. - Kill Your Mother or Die (S3E10) | Movieclips 3 min 
Canadian Rockies 4K HDR - Moraine Lake, Lake Louise & Real Nature Sounds | Ep. 17/3 65 min 
Inside Memphis’ Most Dangerous Hoods 83 min Where the loss function for training LLMs comes from. Job opportunities aligned to this audience: https://3b1b.co/talent Early views and other perks for supporters: https://3b1b.co/support Home page: https://www.3blue1brown.com Part 1: https://youtu.be/l6DKRf-fAAM If you want to learn more about Lagrange Multipliers, I made multiple videos and articles for the topic back in my Khan Academy days: https://www.khanacademy.org/math/multivariable-calculus/applications-of-multivariable-derivatives/lagrange-multipliers-and-constrained-optimization/v/constrained-optimization-introduction Manim animations by Aaron Gostein and Grant Sanderson NanoGPT animation by Clayton Rabideau 3d black-box model by Paul Dancstep Chess game and Lagrange Multiplier scenes by Nishad Deulkar Music by Vince Rubinetti Timestamps 0:00 - Language trees and zipping 3:02 - Recap optimal codes 5:20 - Defining cross-entropy 8:26 - Intuition and examples 12:59 - Application to language trees 14:55 - Pre-training LLMs 20:38 - What makes this loss function best? 26:13 - Distillation 30:12 - 3b1b Talent 31:35 - KL Divergence ------------------ These animations are largely made using a custom Python library, manim. See the FAQ comments here: https://3b1b.co/faq#manim Music by Vincent Rubinetti. https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown https://open.spotify.com/album/1dVyjwS8FBqXhRunaG5W5u ------------------ 3blue1brown is a channel about animating math, in all senses of the word animate. If you're reading the bottom of a video description, I'm guessing you're more interested than the average viewer in lessons here. It would mean a lot to me if you chose to stay up to date on new ones, either by subscribing here on YouTube or otherwise following on whichever platform below you check most regularly. Mailing list: https://3blue1brown.substack.com Twitter: https://twitter.com/3blue1brown Bluesky: https://bsky.app/profile/3blue1brown.com Instagram: https://www.instagram.com/3blue1brown Reddit: https://www.reddit.com/r/3blue1brown Facebook: https://www.facebook.com/3blue1brown Patreon: https://patreon.com/3blue1brown Website: https://www.3blue1brown.com
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