2 papers
cs.LG2026
Clarifying Shampoo: Adapting Spectral Descent to Stochasticity and the Parameter Trajectory
Runa Eschenhagen, Anna Cai, Tsung-Hsien Lee +1
Optimizers leveraging the matrix structure in neural networks, such as Shampoo and Muon, are more data-efficient than element-wise algorithms like Adam and Signum. While in specifi…
cs.LG2025
Purifying Shampoo: Investigating Shampoo's Heuristics by Decomposing its Preconditioner
Runa Eschenhagen, Aaron Defazio, Tsung-Hsien Lee +2
The recent success of Shampoo in the AlgoPerf contest has sparked renewed interest in Kronecker-factorization-based optimization algorithms for training neural networks. Despite it…