activity
20242026
collaborators

5 papers

cs.LG2026

Emergent Capabilities Arise Randomly from Learning Sparse Attention Patterns

Vatsal Baherwani, Zixi Chen, Shikai Qiu +2

Neural scaling laws for transformer language models predict smooth improvements in pretraining loss with increasing parameters, but downstream capabilities such as in-context learn…

cs.LG2026

Hyperparameter Transfer Enables Consistent Gains of Matrix-Preconditioned Optimizers Across Scales

Shikai Qiu, Zixi Chen, Hoang Phan +2

Several recently introduced deep learning optimizers utilizing matrix-level preconditioning have shown promising speedups relative to the current dominant optimizer AdamW, particul…

cs.LG2025

Scaling Collapse Reveals Universal Dynamics in Compute-Optimally Trained Neural Networks

Shikai Qiu, Lechao Xiao, Andrew Gordon Wilson +2

What scaling limits govern neural network training dynamics when model size and training time grow in tandem? We show that despite the complex interactions between architecture, tr…

cs.LG2025

Out-of-Distribution Detection Methods Answer the Wrong Questions

Yucen Lily Li, Daohan Lu, Polina Kirichenko +4

To detect distribution shifts and improve model safety, many out-of-distribution (OOD) detection methods rely on the predictive uncertainty or features of supervised models trained…

cs.LG2024

Controllable Prompt Tuning For Balancing Group Distributional Robustness

Hoang Phan, Andrew Gordon Wilson, Qi Lei

Models trained on data composed of different groups or domains can suffer from severe performance degradation under distribution shifts. While recent methods have largely focused o…