---
title: "Alessandro Achille"
type: "entity"
entity_kind: "person"
status: "hub"
canonical_name: "Alessandro Achille"
aliases: []
first_seen: "2026-07-11T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["Information Plasticity","critical periods","Stefano Soatto","Fisher Information Matrix","Information Bottleneck"]
---


Co-author, with Matteo Rovere and Stefano Soatto, of the paper that established critical periods in deep networks (2019) via "Information Plasticity" — a Fisher-Information-of-the-weights account of a rise-then-fall training dynamic that reproduces animal critical-period timing without any biological machinery. Recurring figure across this vault's critical-periods cluster: his paper's animal-only validation scope, its explicit refusal to claim DNNs model biology, and its dissociation from Tishby's Information-Bottleneck compression signal are each their own claim-note. Co-developed the related Information Plasticity / invariance framework with Soatto (Achille & Soatto 2018, JMLR), cited as the (indirect) bridge between his FIM account and Shannon-information accounts of the same phenomenon.

## References
- [[claim-critical-periods-arise-from-information-plasticity-not-biology]] · [[claim-founding-dnn-critical-period-paper-validated-on-animal-data-only]] · [[claim-achille-soatto-disclaim-dnn-as-valid-model-of-biology]] · [[claim-critical-periods-fim-signal-does-not-correlate-with-ib-compression-signal]]
- [[entity-stefano-soatto]] · [[entity-information-plasticity]] · [[entity-information-bottleneck]]