{
  "contract": "purged-cross-validation-reference-v1",
  "publishedAt": "2026-09-16",
  "canonical": "/purged-cross-validation",
  "method": "Contiguous validation fold with forward label intervals, overlap purging, and a post-validation-information embargo",
  "parameters": {
    "observations": 100,
    "labelHorizon": 5,
    "validationStart": 40,
    "validationEnd": 59,
    "embargoRows": 5
  },
  "result": {
    "validationRows": 20,
    "validationInformationStart": 40,
    "validationInformationEnd": 64,
    "purgedRows": 10,
    "embargoedRows": 5,
    "retainedTrainingRows": 65,
    "retainedTrainingPercent": 81.25
  },
  "interpretation": "The five training labels ending at or after validation begins and the five post-fold training labels beginning before validation information ends are purged. Five additional rows after the validation information interval are embargoed. This is a geometry fixture, not a universal embargo recommendation."
}