{
  "definition": "An evaluation metric measuring the fraction of the top K retrieved or ranked results that are relevant.",
  "derivedRelations": [
    {
      "note": "Precision@K measures precision at a fixed cutoff; Average Precision aggregates precision at relevant ranks across the ranked list.",
      "target": "average-precision",
      "type": "notEquivalentTo"
    },
    {
      "note": "MAP averages rank-sensitive AP values across topics; Precision@K only measures precision at a fixed cutoff.",
      "target": "mean-average-precision",
      "type": "notEquivalentTo"
    },
    {
      "note": "Success@K is binary per query; Precision@K measures the fraction of top-K results that are relevant.",
      "target": "success-at-k",
      "type": "notEquivalentTo"
    }
  ],
  "distinctions": [
    {
      "reason": "Precision@K measures how many top-K results are relevant; Recall@K measures how much of the relevant set was retrieved within K.",
      "statement": "Precision@K is not Recall@K.",
      "target": "recall-at-k",
      "targetLabel": "Recall@K",
      "targetUri": "https://id.searchplex.net/recall-at-k/"
    }
  ],
  "id": "precision-at-k",
  "kind": "Metric",
  "license": "https://creativecommons.org/publicdomain/zero/1.0/",
  "links": [
    {
      "label": "Evaluation of ranked retrieval results",
      "type": "canonicalSurvey",
      "url": "https://nlp.stanford.edu/IR-book/html/htmledition/evaluation-of-ranked-retrieval-results-1.html"
    }
  ],
  "modifiedAt": "2026-09-14T06:43:46Z",
  "prefLabel": "Precision@K",
  "publisher": {
    "name": "Searchplex",
    "url": "https://searchplex.net/"
  },
  "relations": [
    {
      "target": "cutoff-metric",
      "type": "broader"
    },
    {
      "target": "precision-metric",
      "type": "broader"
    },
    {
      "target": "ranking",
      "type": "evaluates"
    },
    {
      "target": "retrieval",
      "type": "evaluates"
    },
    {
      "note": "Precision@K measures how many top-K results are relevant; Recall@K measures how much of the relevant set was retrieved within K.",
      "target": "recall-at-k",
      "type": "notEquivalentTo"
    },
    {
      "target": "average-precision",
      "type": "related"
    },
    {
      "target": "mean-average-precision",
      "type": "related"
    },
    {
      "target": "mrr",
      "type": "related"
    },
    {
      "target": "ndcg",
      "type": "related"
    },
    {
      "target": "qrels",
      "type": "related"
    },
    {
      "target": "recall-at-k",
      "type": "related"
    },
    {
      "target": "relevance-judgment",
      "type": "related"
    },
    {
      "target": "success-at-k",
      "type": "related"
    }
  ],
  "representations": {
    "html": "https://id.searchplex.net/precision-at-k/",
    "json": "https://id.searchplex.net/precision-at-k.json",
    "jsonld": "https://id.searchplex.net/precision-at-k.jsonld"
  },
  "scheme": "https://id.searchplex.net/scheme/",
  "scopeNote": "Precision@K emphasizes the quality of the first K results. It is distinct from Recall@K, which measures how much of the relevant set appears within the top K.",
  "status": "published",
  "uri": "https://id.searchplex.net/precision-at-k/"
}