# Using ℓ1-Relaxation and Integer Programming to Obtain Dual Bounds for Sparse PCA

> Research article (Operations Research, 2021) · cited 11× · AI/ML

**Wikidata**: [openalex:W3212062408](https://www.wikidata.org/wiki/openalex:W3212062408)  
**Source**: https://4ort.xyz/entity/using-l1-relaxation-and-integer-programming-to-obtain-dual-bounds-for-sparse-pca