Pattern
Vespa
Provide a search platform with deeper programmability than Elasticsearch or OpenSearch: tensor-native data model, phased ranking with custom expressions at each phase, first-class support for late-interaction (ColBERT-style) retrieval, and the operational maturity of having run Yahoo's personalized news ranking at production scale for over a decade.
Classification — Programmable hybrid search platform with phased ranking and native ColBERT support.
Full entry
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