PolicyEngine / PolicyEngine/microcosm

Belgium cross-engine validation note: identical population, independent engines, €643 agreement on €20.9B

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tier:standard
Dominant language
Python
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0
Forks
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1d 3h
Merged PRs (30d)
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Description

Proposal

A short cross-engine validation note (IJM research note or a section of the populace system paper): Belgium as the exhibit that one population + two independent rules engines agree — the Axiom-engine Belgium model and EUROMOD reproduce SSC aggregates to €643 on €20.9B on an identical population, with 21/21 calibration targets within 1.8%.

Public framing is strictly validation ("independent implementations agree"), collegial toward EUROMOD. Assemble from the populace-be work (EPIC #259); rerun recipes exist. Cheap, high-credibility launch evidence.

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Research direction

Start with the populace-be work in EPIC #259 and its existing rerun recipes. Assemble the Belgium cross-engine validation note around the stated €643 agreement, €20.9B aggregate, and 21/21 calibration targets within 1.8%; done means a concise, collegial validation section or IJM research note supported by those reproduced results.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data, documentation
Issue type
Documentation
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
58/100

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