barak-pearlmutter

3 notes carry this tag — 1 claim, 1 observation, 1 capture. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

Pearlmutter's 1994 R-operator computes an exact Hessian-vector product in O(n) time without ever forming the Hessian

claim seedling Tier 1 2026-09-26 · automatic-differentiation, hessian-vector-product, barak-pearlmutter, reverse-mode-ad, second-order-methods
The JMLR survey anchoring the vault's ML/AD mutual-unawareness claim is co-authored by Barak Pearlmutter, a researcher whose own career spans the divide the survey describes

observation seedling Tier 1 2026-09-26 · automatic-differentiation, backpropagation, barak-pearlmutter, community-structure, history-of-ml
Barak Pearlmutter — unexamined co-author of the vault's ML/AD mutual-unawareness survey — is himself a disciplinary bridge, and his 1994 Hessian trick is still live infrastructure

capture promoted Tier 1 2026-09-21 · automatic-differentiation, barak-pearlmutter, hessian-vector-product, jingle-fallacy, embedding-false-friend