# On the Cross-Validation Bias due to Unsupervised Preprocessing

> Research article (Journal of the Royal Statistical Society Series B (Statistical Methodology), 2022) · cited 30× · AI/ML

**Wikidata**: [openalex:W3015646389](https://www.wikidata.org/wiki/openalex:W3015646389)  
**Source**: https://4ort.xyz/entity/on-the-cross-validation-bias-due-to-unsupervised-preprocessing