Searchplex ID Retrieval terminology registry

Task

Named Entity Recognition

Canonical ID https://id.searchplex.net/named-entity-recognition/

Identifying spans in text that denote named entities or entity-like mentions and assigning them entity types.

Also called

  • NER

Scope

In search systems, named entity recognition may be applied to queries or documents as part of query understanding, entity extraction, routing, or catalog matching. It identifies and types mentions; it does not by itself link them to canonical entities.

Part of

  • Query Understanding Often used as a query-understanding component when entities, brands, places, products, or attributes are expressed in a query.

Not equivalent to

  • Named Entity Recognition is not Entity Linking. Named entity recognition identifies mention spans and types; entity linking maps those mentions to canonical entities.
  • Named Entity Recognition is not Query Segmentation. Query segmentation divides a query into meaningful spans; named entity recognition identifies spans that denote entities or entity-like mentions.

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ID