Reposted by Ian MagnussonDavid Heineman @davidheineman.com · 19/08/2025Evaluating language models is tricky, how do we know if our results are real, or due to random chance? We find an answer with two simple metrics: signal, a benchmark’s ability to separate models, and noise, a benchmark’s random variability between training steps 🧵 2154
Reposted by Ian MagnussonValentin Hofmann @valentinhofmann.bsky.social · 16/09/2025📢 New #COLM2025 paper 📢 Standard benchmarks give every LLM the same questions. This is like testing 5th graders and college seniors with *one* exam! 🥴 Meet Fluid Benchmarking, a capability-adaptive eval method delivering lower variance, higher validity, and reduced cost. 🧵 34110
Reposted by Ian MagnussonAi2 @ai2.bsky.social · 16/09/2025🚀 Introducing Fluid Benchmarking—an adaptive way to evaluate LLMs. Inspired by psychometrics, it tailors which questions to ask based on each model’s capability, making evals more efficient & reliable. 🧵 1207
Ian Magnusson @ianmagnusson.bsky.social · 15/04/2025🔭 Science relies on shared artifacts collected for the common good. 🛰 So we asked: what's missing in open language modeling? 🪐 DataDecide 🌌 charts the cosmos of pretraining—across scales and corpora—at a resolution beyond any public suite of models that has come before. 2254
Reposted by Ian MagnussonJiacheng Liu @liujch1998.bsky.social · 09/04/2025Today we're unveiling OLMoTrace, a tool that enables everyone to understand the outputs of LLMs by connecting to their training data. We do this on unprecedented scale and in real time: finding matching text between model outputs and 4 trillion training tokens within seconds. ✨ 1415
Reposted by Ian MagnussonMichael Saxon @saxon.me · 06/12/2024🚨I too am on the job market‼️🤯 I'm searching for faculty positions/postdocs in multilingual/multicultural NLP, vision+language models, and eval for genAI! I'll be at #NeurIPS2024 presenting our work on meta-evaluation for text-to-image faithfulness! Let's chat there! Papers in🧵, see more: saxon.me 1488
Reposted by Ian MagnussonKyle Lo @kylelo.bsky.social · 10/12/2024the science of LMs should be fully open✨ today @akshitab.bsky.social @natolambert.bsky.social and I are giving our #neurips2024 tutorial on language model development. everything from data, training, adaptation. published or not, no secrets 🫡 tues, 12/10, 9:30am PT ☕️ neurips.cc/virtual/2024...neurips.ccNeurIPS Tutorial Opening the Language Model Pipeline: A Tutorial on Data Preparation, Model Training, and AdaptationNeurIPS 2024 514517
Reposted by Ian MagnussonStella Li @stellali.bsky.social · 10/12/2024Excited to present MediQ at #NeurIPS ! 📍Stop by my poster: East Exhibit Hall A-C #4805📷 🕚Thu, Dec 12 | 11am–2pm 🗓️tinyurl.com/mediq2024 Love to chat about anything--reasoning, synthetic data, multi-agent interaction, multilingual nlp! Message me if you want to chat☕️🍵🧋 0152
Reposted by Ian MagnussonJiacheng Liu @liujch1998.bsky.social · 09/12/2024Want to predict the task performance of LMs before pretraining them? We develop task scaling laws and model ladders, which predict the accuracy on individual tasks by OLMo 2 7B & 13B models within 2 points of absolute error. The cost is 1% of the compute used to pretrain them. 23314
Reposted by Ian MagnussonHamish Ivison @hamishivi.bsky.social · 02/12/2024Excited to be at #NeurIPS next week in 🇨🇦! Please reach out if you want to chat about LM post-training (Tülu!), data curation, or anything else :) I'll be around all week, with two papers you should go check out (see image or next tweet): 2132
Reposted by Ian MagnussonShayne Longpre @shaynelongpre.bsky.social · 07/12/2024Touching down in Vancouver 🛬 for #NeurIPS2024! I'll be presenting our "Consent in Crisis" work on the 11th: arxiv.org/abs/2407.14933 Reach out to catch up or chat about: - Training data / methods - AI uses & impacts - Multilingual scalingarxiv.orgConsent in Crisis: The Rapid Decline of the AI Data CommonsGeneral-purpose artificial intelligence (AI) systems are built on massive swathes of public web data, assembled into corpora such as C4, RefinedWeb, and Dolma. To our knowledge, we conduct the first, ... 1161
Ian Magnusson @ianmagnusson.bsky.social · 10/12/2024Come chat with me at #NeurIPS2024 and learn about how to use Paloma to evaluate perplexity over hundreds of domains! ✨We have stickers too✨ 1214
Reposted by Ian MagnussonClara Na @clarana.bsky.social · 05/11/2024Building/customizing your own LLM? You'll want to curate training data for it, but how do you know what makes the data good? You can try out recipes👩🍳 iterate on ✨vibes✨ but we can't actually test all possible combos of tweaks,,, right?? 🙅♂️WRONG! arxiv.org/abs/2410.15661 (1/n) 🧵 1498
Ian Magnusson @ianmagnusson.bsky.social · 20/12/2023LMs are used to process text from many topics, styles, dialects, etc., but how well do they do? 📈 Evaluating perplexity on just one corpus like C4 doesn't tell the whole story 📉 ✨📃✨ We introduce Paloma, a benchmark of 585 domains from NY Times to r/depression on Reddit. 1177