activity
20232026
most citedMEDITRON-70B: Scaling Medical Pretraining for Large Language Models

123 citations · 163 across the 9 of their papers we have counts for

collaborators

12 papers

cs.LG2026

OptiSelect: How does the Optimizer Shape Data Curriculum?

Simin Fan, Alireza Abdollahpoorrostam, Martin Jaggi

Online data selection has demonstrated substantial efficiency gains for LLM pretraining by training on the most valuable candidates within each batch. Since a candidate's value is…

cs.CL2025

Apertus: Democratizing Open and Compliant LLMs for Global Language Environments

Project Apertus, Alejandro Hernández-Cano, Alexander Hägele +100

We present Apertus, a fully open suite of large language models (LLMs) designed to address two systemic shortcomings in today's open model ecosystem: data compliance and multilingu…

cs.CL2025

Semantic uncertainty in advanced decoding methods for LLM generation

Darius Foodeei, Simin Fan, Martin Jaggi

This study investigates semantic uncertainty in large language model (LLM) outputs across different decoding methods, focusing on emerging techniques like speculative sampling and…

cs.CL2025

Balancing Knowledge Delivery and Emotional Comfort in Healthcare Conversational Systems

Shang-Chi Tsai, Yun-Nung Chen

With the advancement of large language models, many dialogue systems are now capable of providing reasonable and informative responses to patients' medical conditions. However, whe…

cs.LG2025

GRAPE: Optimize Data Mixture for Group Robust Multi-target Adaptive Pretraining

Simin Fan, Maria Ios Glarou, Martin Jaggi

The performance of large language models (LLMs) across diverse downstream applications is fundamentally governed by the quality and composition of their pretraining corpora. Existi…

cs.LG2025

NeuralGrok: Accelerate Grokking by Neural Gradient Transformation

Xinyu Zhou, Simin Fan, Martin Jaggi +1

Grokking is proposed and widely studied as an intricate phenomenon in which generalization is achieved after a long-lasting period of overfitting. In this work, we propose NeuralGr…

cs.LG2024

HyperINF: Unleashing the HyperPower of the Schulz's Method for Data Influence Estimation

Xinyu Zhou, Simin Fan, Martin Jaggi

Influence functions provide a principled method to assess the contribution of individual training samples to a specific target. Yet, their high computational costs limit their appl…

cs.CY2024★ 36 cited

Could ChatGPT get an Engineering Degree? Evaluating Higher Education Vulnerability to AI Assistants

Beatriz Borges, Negar Foroutan, Deniz Bayazit +87

AI assistants are being increasingly used by students enrolled in higher education institutions. While these tools provide opportunities for improved teaching and education, they a…

cs.LG2024★ 2 cited

Deep Grokking: Would Deep Neural Networks Generalize Better?

Simin Fan, Razvan Pascanu, Martin Jaggi

Recent research on the grokking phenomenon has illuminated the intricacies of neural networks' training dynamics and their generalization behaviors. Grokking refers to a sharp rise…

cs.CL2023★ 123 cited

MEDITRON-70B: Scaling Medical Pretraining for Large Language Models

Zeming Chen, Alejandro Hernández Cano, Angelika Romanou +17

Large language models (LLMs) can potentially democratize access to medical knowledge. While many efforts have been made to harness and improve LLMs' medical knowledge and reasoning…

cs.CL2023

Irreducible Curriculum for Language Model Pretraining

Simin Fan, Martin Jaggi

Automatic data selection and curriculum design for training large language models is challenging, with only a few existing methods showing improvements over standard training. Furt…

cs.LG2023★ 2 cited

DoGE: Domain Reweighting with Generalization Estimation

Simin Fan, Matteo Pagliardini, Martin Jaggi

The coverage and composition of the pretraining data significantly impacts the generalization ability of Large Language Models (LLMs). Despite its importance, recent LLMs still rel…