# Parametric PCA for unsupervised metric learning

> Research article (Pattern Recognition Letters, 2020) · cited 37× · AI/ML

**Wikidata**: [openalex:W3024483685](https://www.wikidata.org/wiki/openalex:W3024483685)  
**Source**: https://4ort.xyz/entity/parametric-pca-for-unsupervised-metric-learning