Karen Ullrich (s/h)

@karen-ullrich.bsky.social

Research scientist at FAIR NY ❤️ LLMs + Information Theory. Previously, PhD at UoAmsterdam, intern at DeepMind + MSRC.

LLMs are largely memory bound! Tokenizers can eat >30% of on‑device memory for small (<1B) models, because we reuse the huge vocabularies from big models. Our method lets you distill large models into small ones with much smaller vocabulary, reducing overall memory footprint.

Bild

Release Day 🎉 Meet OpenApps — a pure-Python, open-source ecosystem for stress-testing UI agents at scale. Runs on a single CPU. Generates thousands of unique UI variations. And it reveals just how fragile today’s SOTA agents are. (Yes, even GPT-4 and Claude struggle.)

Excited to be attending NeurIPS 2025 — my 10-year anniversary since I first walked into NeurIPS back in 2015, just before starting my PhD in Amsterdam. Grateful for a decade of learning, growing, and being part of this incredible community. If you’re around this year, would love to meet.

Bild

How would you make an LLM "forget" the concept of dog — or any other arbitrary concept? 🐶❓ We introduce SAMD & SAMI — a novel, concept-agnostic approach to identify and manipulate attention modules in transformers.

BildBild

I will be at #Neurips2024 next week to talk about these two papers and host a workshop on #NeuralCompression.

Karen Ullrich (s/h)@karen-ullrich.bsky.social · 2y ago

🎉 Exciting News! 🎉 Two papers have been accepted at #NeurIPS2024 ! 🙌🏼 These papers are the first outcomes of my growing focus on LLMs. 🍾 Cheers to Nikita Dhawan and Jingtong Su + all involved collaborators: @cmaddis.bsky.social Leo Cotta, Rahul Krishnan, Julia Kempe

🚨 Internship Opportunity at FAIR NY 🚨 I got one PhD internship position available for 2025! Interested in exploring the intersection of information theory, probabilistic reasoning, and LLMs? 📩 Send me a DM with your CV, website, and GScholar profile by October 14th.