# A constrained cluster-based approach for tracking the S&P 500 index

> Research article (International Journal of Production Economics, 2017) · cited 26× · AI/ML

**Wikidata**: [openalex:W2738692001](https://www.wikidata.org/wiki/openalex:W2738692001)  
**Source**: https://4ort.xyz/entity/a-constrained-cluster-based-approach-for-tracking-the-s-amp-p-500-index