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AlphaEarth distinguishes cities but compresses urban variation
Author1, Author2, Author3, Author4, Author5
urban analysissatellite imagerygeospatial modeling
2609.30356
Builder Relevance
1h ago70%
Abstract
This paper audits the representation of urban areas using AlphaEarth, revealing significant insights into urban variation and its geographical implications.
Reality Card
Core Claim
AlphaEarth's representations allow for comparison across urban regions, but the differences in annual layers are not yet validated for temporal comparison.
Method / Result
Cities occupy a shifted but overlapping region on the hypersphere, with continent and climate predicting 24.3% of variation among urban centers.
Limitations
The differences between annual layers of representation have not been validated for comparison over time.
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