English

Stability of Sequential and Parallel Coordinate Ascent Variational Inference

Machine Learning 2026-03-24 v1 Machine Learning Statistics Theory Computation Statistics Theory

Abstract

We highlight a striking difference in behavior between two widely used variants of coordinate ascent variational inference: the sequential and parallel algorithms. While such differences were known in the numerical analysis literature in simpler settings, they remain largely unexplored in the optimization-focused literature on variational inference in more complex models. Focusing on the moderately high-dimensional linear regression problem, we show that the sequential algorithm, although typically slower, enjoys convergence guarantees under more relaxed conditions than the parallel variant, which is often employed to facilitate block-wise updates and improve computational efficiency.

Keywords

Cite

@article{arxiv.2603.20929,
  title  = {Stability of Sequential and Parallel Coordinate Ascent Variational Inference},
  author = {Debdeep Pati},
  journal= {arXiv preprint arXiv:2603.20929},
  year   = {2026}
}

Comments

20 pages, 3 figures

R2 v1 2026-07-01T11:31:40.354Z