arXiv Machine Learning

Optimizer-dependent training dynamics converge to the same one-third optimal data scaling

arXiv Machine Learning
Sep 24

Linear RNN Scaling Laws: When Longer Sequences Beat More Sequences

The paper presents empirical scaling laws for autoregressive language models, linking prediction loss to model size, data size, and compute, and investigates their theoretical basis using a teacher–student linear RNN framework. In this tractable setting, a stable latent linear RNN generates trajectories while a sketched linear recurrent student is trained via full‑batch WSD gradient descent on next‑token prediction. The study derives explicit approximation, optimization, and statistical scaling laws that depend on the sketch dimension, number of trajectories, and trajectory length, revealing how different power‑law exponents for innovation and initialization covariances affect the rates and crossovers between regimes.

By Ziyan Chen, Zhongzhu Zhou, Peilin Liu, Ding-Xuan Zhou
arXiv Machine Learning
Sep 4

Coupled Scaling: A Representational Accessibility Framework for Neural Scaling Laws

The paper introduces Coupled Scaling, a framework that links neural scaling laws to the relationship between task structure and the geometry that an architecture‑optimization system can access. It shows that finite‑budget scaling depends on how well the system’s representational support aligns with the task’s energy distribution, deriving residual exponents that vary with architectural coverage and tail decay. The authors propose tests to verify whether static task‑relevant geometry tracks loss and whether multiscale geometry follows coupling‑specific exponent ordering, suggesting a factorial audit of emergence trajectories to isolate geometry from scaling fits.

By Jie Wang