# A KPCA spatio-temporal differential geometric trajectory cloud classifier for recognizing human actions in a CBVR system

> Research article (Expert Systems with Applications, 2015) · cited 18× · AI/ML

**Wikidata**: [openalex:W2016861480](https://www.wikidata.org/wiki/openalex:W2016861480)  
**Source**: https://4ort.xyz/entity/a-kpca-spatio-temporal-differential-geometric-trajectory-cloud-classifier-for-recognizing-human-actions-in-a-cbvr-system