Ether Data · Spatio-temporal intelligence

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Stale boundaries

temporal

Admin/postal/DMA boundaries change; using an old vintage misassigns cells.

Detection

Boundary vintage older than the activity period.

Mitigation

Version boundaries
Record validFrom/validTo on every crosswalk

Read the full article: Requested Vs Executed Geography →

Affected conversions

Admin polygons → H3 (max-overlap partition) approximate
Admin polygons → H3 (weighted crosswalk) weighted
H3 → platform-native IDs approximate