# An Internal Validity Index Based on Density-Involved Distance

> Research article (IEEE Access, 2019) · cited 41× · AI/ML

**Wikidata**: [openalex:W2929370848](https://www.wikidata.org/wiki/openalex:W2929370848)  
**Source**: https://4ort.xyz/entity/an-internal-validity-index-based-on-density-involved-distance