One Index for Subsumption and Roll-up across Time, Geography, and Ontology

Time-series, geospatial, and ontology systems each maintain a hierarchy – day <= month <= year, zip <= city, is-a / part-of – and each indexes it in a separate silo. We observe these are all subsumption posets, with one recurring workload: order testing (is x under y?) and hierarchical roll-up (ag…

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