# OnCo record idea-data-multisite-validation-precondition (idea). 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/ideas/idea-data-multisite-validation-precondition/>
  a schema:CreativeWork ;
  onco:kind "idea" ;
  schema:identifier "idea-data-multisite-validation-precondition" ;
  schema:name "External validation at five or more sites in two countries before clearance"@en ;
  schema:description "No cancer AI would be approved until it has been tested on patients from at least five different hospitals in at least two countries, none of which contributed training data."@en ;
  schema:url <https://onco.cc/ideas/idea-data-multisite-validation-precondition/> ;
  schema:dateModified "2026-09-08"^^xsd:date ;
  schema:citation <https://doi.org/10.1038/s41591-021-01312-x> ;
  onco:related <https://onco.cc/ideas/idea-data-sequestered-prospective-benchmarks/> ;
  onco:sections <https://onco.cc/fronts/ai-computation/> ;
  onco:bottlenecks <https://onco.cc/bottlenecks/b-ai-validation/>, <https://onco.cc/bottlenecks/b-regulatory-fragmentation/> ;
  onco:keyPapers <https://onco.cc/key-papers/paper-wu-nat-med/> .