most citedIdentifying and Evaluating Inactive Heads in Pretrained LLMs

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cs.LG2026

Speculating Experts Accelerates Inference for Mixture-of-Experts

Vivan Madan, Prajwal Singhania, Abhinav Bhatele +2

Mixture-of-Experts (MoE) models have gained popularity as a means of scaling the capacity of large language models (LLMs) while maintaining sparse activations and reduced per-token…

cs.LG20261 cited

Identifying and Evaluating Inactive Heads in Pretrained LLMs

Pedro Sandoval-Segura, Xijun Wang, Ashwinee Panda +4

Attention is foundational to large language models (LLMs), enabling different heads to have diverse focus on relevant input tokens. However, learned behaviors like attention sinks,…

cs.LG2025

Continual Pre-training of MoEs: How robust is your router?

Benjamin Thérien, Charles-Étienne Joseph, Zain Sarwar +7

Sparsely-activated Mixture of Experts (MoE) transformers are promising architectures for foundation models. Compared to dense transformers that require the same amount of floating-…

cs.LG2025

Dense Backpropagation Improves Training for Sparse Mixture-of-Experts

Ashwinee Panda, Vatsal Baherwani, Zain Sarwar +4

Mixture of Experts (MoE) pretraining is more scalable than dense Transformer pretraining, because MoEs learn to route inputs to a sparse set of their feedforward parameters. Howeve…

cs.LG2025

Gemstones: A Model Suite for Multi-Faceted Scaling Laws

Sean McLeish, John Kirchenbauer, David Yu Miller +5

Scaling laws are typically fit using a family of models with a narrow range of frozen hyperparameter choices. In this work we study scaling laws using multiple architectural shapes…

cs.LG2025

DynaGuard: A Dynamic Guardian Model With User-Defined Policies

Monte Hoover, Vatsal Baherwani, Neel Jain +7

Guardian models play a crucial role in ensuring the safety and ethical behavior of user-facing AI applications by enforcing guardrails and detecting harmful content. While standard…