{
  "altLabels": [
    "NER"
  ],
  "definition": "Identifying spans in text that denote named entities or entity-like mentions and assigning them entity types.",
  "distinctions": [
    {
      "reason": "Named entity recognition identifies mention spans and types; entity linking maps those mentions to canonical entities.",
      "statement": "Named Entity Recognition is not Entity Linking.",
      "target": "entity-linking",
      "targetLabel": "Entity Linking",
      "targetUri": "https://id.searchplex.net/entity-linking/"
    },
    {
      "reason": "Query segmentation divides a query into meaningful spans; named entity recognition identifies spans that denote entities or entity-like mentions.",
      "statement": "Named Entity Recognition is not Query Segmentation.",
      "target": "query-segmentation",
      "targetLabel": "Query Segmentation",
      "targetUri": "https://id.searchplex.net/query-segmentation/"
    }
  ],
  "id": "named-entity-recognition",
  "kind": "Task",
  "license": "https://creativecommons.org/publicdomain/zero/1.0/",
  "links": [
    {
      "label": "A survey of named entity recognition and classification",
      "type": "canonicalSurvey",
      "url": "https://doi.org/10.1016/j.artint.2009.07.006"
    }
  ],
  "modifiedAt": "2026-09-14T06:43:46Z",
  "prefLabel": "Named Entity Recognition",
  "publisher": {
    "name": "Searchplex",
    "url": "https://searchplex.net/"
  },
  "relations": [
    {
      "note": "Named entity recognition identifies mention spans and types; entity linking maps those mentions to canonical entities.",
      "target": "entity-linking",
      "type": "notEquivalentTo"
    },
    {
      "note": "Query segmentation divides a query into meaningful spans; named entity recognition identifies spans that denote entities or entity-like mentions.",
      "target": "query-segmentation",
      "type": "notEquivalentTo"
    },
    {
      "note": "Often used as a query-understanding component when entities, brands, places, products, or attributes are expressed in a query.",
      "target": "query-understanding",
      "type": "partOf"
    },
    {
      "target": "entity-linking",
      "type": "related"
    },
    {
      "target": "query-segmentation",
      "type": "related"
    }
  ],
  "representations": {
    "html": "https://id.searchplex.net/named-entity-recognition/",
    "json": "https://id.searchplex.net/named-entity-recognition.json",
    "jsonld": "https://id.searchplex.net/named-entity-recognition.jsonld"
  },
  "scheme": "https://id.searchplex.net/scheme/",
  "scopeNote": "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.",
  "slugAliases": [
    "ner"
  ],
  "status": "published",
  "uri": "https://id.searchplex.net/named-entity-recognition/"
}