# OnCo record cross-validation (term). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/terms/cross-validation/>
  a schema:DefinedTerm ;
  onco:kind "term" ;
  schema:identifier "cross-validation" ;
  schema:name "Cross-validation and stratified k-fold"@en ;
  schema:alternateName "cross-validation"@en, "cross validation"@en, "k-fold cross-validation"@en, "5-fold cross-validation"@en, "stratified k-fold"@en, "stratified cross-validation"@en, "nested cross-validation"@en, "random seed"@en ;
  schema:description "Cross-validation splits the data into k folds, trains on k minus one and tests on the last, rotating so every sample is tested once; stratified folds keep the class balance the same in each fold."@en ;
  schema:url <https://onco.cc/terms/cross-validation/> ;
  schema:dateModified "2026-09-24"^^xsd:date ;
  schema:sameAs <https://en.wikipedia.org/wiki/Cross-validation_(statistics)> ;
  schema:citation <https://en.wikipedia.org/wiki/Stratified_sampling>, <https://en.wikipedia.org/wiki/Cross-validation_(statistics)> ;
  onco:tag "cansim-terms" ;
  onco:related <https://onco.cc/terms/cancer-ai-vocabulary/> ;
  onco:terms <https://onco.cc/terms/train-test-discipline/>, <https://onco.cc/terms/data-leakage/>, <https://onco.cc/terms/external-validation/>, <https://onco.cc/terms/bootstrap/> .