Scoring methodology & data

Public by design. Updated 2026-10-07

The matching score (0–99) is computed in three tiers: T1 hard constraints (budget/visa/safety, veto-only, never weighted); T2 core matching (preferences 42% + personality 30% + interests 18%, missing dimensions dropped without penalty); T3 boosters (RIASEC 5% + risk-link 3% + air quality 2%, ≤10% total). Raw score calibrated as 52 + raw × 0.46.

Tier 2: 11 preference dimensions

Budget0.18 (within 0.42 preferences)
Climate0.12
Pace / Social0.10 / 0.10
Size / Language / Visa / Remote0.09 × 4
Climate comfortobjective 0.05 · derived from Open-Meteo
Safetyobjective 0.05 · public statistical estimate
English depthobjective 0.04 · public English-proficiency band

Within preferences: user-reported 8 dims sum to 0.86, objective 3 dims sum to 0.14. Missing dims are dropped from numerator and denominator (down-weight, never penalised).

Tier 3: boosters (≤10%)

RIASEC interest boost0.05 · public career-interest framework
Risk-profile link0.03 · risk-tolerance profile × city adventure-friendliness
Air quality0.02 · WHO 2021 bands (good 90 / fair 72 / moderate 48 / poor 25)

Data sources & licences

GeoNames cities15000city base · CC BY 4.0 · geonames.org
Open-Meteo Historical / Air Quality10-yr climate means + PM2.5 · CC BY 4.0 · open-meteo.com · CAMS reanalysis
Public English-proficiency ranking / World Bank / UNDP / Transparency International / IEPcountry-level reference · official open data & public statistics · CC BY 4.0 / hand snapshot
OEJTS 1.2lite 16-type personality test (Jungian bipolar structure) · CC BY-NC-SA 4.0 · Open Psychometrics
WHO Global Air Quality Guidelines 2021annual PM2.5 bands (good ≤10 / fair ≤15 / moderate ≤25 / poor >25)
Typefaces Fraunces / Newsreader / Manrope / system CJKSIL Open Font License 1.1 · self-hosted via @fontsource, no external CDN

Update cadence & disclaimer

City/country pages are generated from snapshot data at build time (built 2026-10-07); public statistical estimates are reviewed quarterly; climate & air are 2022–2024 multi-year means; visa/tax snapshots carry per-page dates. This site is decision support and is not immigration, visa, legal, tax, medical, or financial advice; quiz results are algorithmic outputs, not clinical assessments.

Career interest framework: O*NET Interest Profiler Short Form — CC BY 4.0, O*NET OnLine (sponsored by the U.S. Department of Labor).

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