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cs.CL2025

2 OLMo 2 Furious

Team OLMo, Pete Walsh, Luca Soldaini +40

We present OLMo 2, the next generation of our fully open language models. OLMo 2 includes a family of dense autoregressive language models at 7B, 13B and 32B scales with fully rele…

cs.CL2025

SciRIFF: A Resource to Enhance Language Model Instruction-Following over Scientific Literature

David Wadden, Kejian Shi, Jacob Morrison +11

We present SciRIFF (Scientific Resource for Instruction-Following and Finetuning), a dataset of 137K instruction-following instances for training and evaluation, covering 54 tasks.…

cs.CL2025

OLMoE: Open Mixture-of-Experts Language Models

Niklas Muennighoff, Luca Soldaini, Dirk Groeneveld +21

We introduce OLMoE, a fully open, state-of-the-art language model leveraging sparse Mixture-of-Experts (MoE). OLMoE-1B-7B has 7 billion (B) parameters but uses only 1B per input to…

cs.CL2025

HALoGEN: Fantastic LLM Hallucinations and Where to Find Them

Abhilasha Ravichander, Shrusti Ghela, David Wadden +1

Despite their impressive ability to generate high-quality and fluent text, generative large language models (LLMs) also produce hallucinations: statements that are misaligned with…

cs.CL2024

OpenScholar: Synthesizing Scientific Literature with Retrieval-augmented LMs

Akari Asai, Jacqueline He, Rulin Shao +22

Scientific progress depends on researchers' ability to synthesize the growing body of literature. Can large language models (LMs) assist scientists in this task? We introduce OpenS…

cs.CL2024

Source-Aware Training Enables Knowledge Attribution in Language Models

Muhammad Khalifa, David Wadden, Emma Strubell +4

Large language models (LLMs) learn a vast amount of knowledge during pretraining, but they are often oblivious to the source(s) of such knowledge. We investigate the problem of int…