arXiv stat.ML
· Papers
Limitations of SGD for Multi-Index Models Beyond Statistical Queries
arXiv:2602.05704v2 Announce Type: replace-cross Abstract: Understanding the limitations of gradient methods, and stochastic gradient descent (SGD) in particular, is a central challenge in learning theory. To that end, a commonly used tool is the Statistical Queries (SQ) framework, which studies performance limits of al