Portfolio · Project 03

Alexander CHERNOV

Associate Principal Data Engineer · Agentic AI & scientific data systems

← the whole portfolio
03

A policy profile for Croissant, the MLCommons dataset descriptor

2025 – present · AstraZeneca

Croissant can write down data-use conditions. No version of it specifies how any of them is evaluated.

No decision procedure, no bound on what a condition costs to check, no defined outcome for a condition an implementation cannot evaluate, and no record of what was checked.

This profile closes that: a dataset declares the operations it admits and the conditions under which it admits them, from a closed set of five operators, so a gate can decide from the descriptor alone and leave a decision record. Two carriers that decide identically are compared as whole decision records.

The measured result is the interesting one. Caller-side authority and data-side conditions disagree in both directions — each refuses requests the other admits, and neither permit set contains the other. Overhead disclosed rather than assumed: +0.0 µs warm, +11.7 µs cold per decision. All emitted documents load under mlcroissant 1.1.0 with zero errors.

Full-length article under review at the Journal of Web Semantics.