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license: mit
---
# Microcosm cross-dataset evaluation bundles

Immutable frontend bundles (`cross_dataset.frontend_bundle.v1`) consumed by the calibration
diagnostics dashboard's Cross-dataset page: every source (a model × dataset pair, or a standalone
dataset) scored against the same Chronicle facts for a jurisdiction. Produced by
PolicyEngine/calibration-diagnostics `scripts/run_full_chronicle_evaluation.py` +
`publish_cross_dataset_frontend_bundle.py`; every partition carries the run and snapshot ids and
a SHA-256 recorded in `manifest.json`.

Layout: `<jurisdiction>/<run_id>/frontend/` and `<jurisdiction>/latest.json` → run id.

Belgium (evaluation-f28ca06a0b0d2baf13c87f2f): sources Microcosm-BE v0.4 × Axiom rules engine, Microcosm-BE v0.4 × EUROMOD
BE_2025, EUROMOD BE_2025 on EU-SILC (JRC country report). Microcosm-BE provenance: synthetic
Belgian population calibrated to Belgian administrative and national-accounts targets (sums of
Chronicle facts; surveys validation-only); support records are a US survey donor pool, reweighted;
a Belgian donor pool is the planned upgrade.