Data Confidence
Every metric in Cittopia carries a data confidence percentage. A 95%-confident number is presented in full saturation. A 60%-confident one is muted. We will never round confidence to 100% to make a chart prettier.
Three components #
| Component | Weight | What it measures |
|---|---|---|
| Freshness | 50% | How recent the most recent observation is. Linear decay from 100% at 0–24 months to 0% at 60+ months. |
| Completeness | 30% | What fraction of expected indicators for a city are actually present. |
| Provenance | 20% | Tier of the source. Official municipal portal = 100%. Eurostat / UN agency = 95%. Reputable academic = 80%. News media = 50%. Estimate = 30%. |
Visual treatment #
- ≥ 90% — full saturation, no caveat icon.
- 70–89% — full saturation, small ℹ️ icon on hover shows the breakdown.
- 50–69% — desaturated 25%, "data is > 2 years old" footnote.
- < 50% — value hidden by default, replaced by an "insufficient data" tile with a link to request open release.
What we refuse to doWe will not interpolate missing district data from neighbours. We will not borrow GDP from country averages. We will not present an estimate as a measurement.
Last updated 30 April 2026 by Tunç Meriç
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