# Face expression recognition system based on ripplet transform type II and least square SVM

> Research article (Multimedia Tools and Applications, 2017) · cited 51× · AI/ML

**Wikidata**: [openalex:W2779238497](https://www.wikidata.org/wiki/openalex:W2779238497)  
**Source**: https://4ort.xyz/entity/face-expression-recognition-system-based-on-ripplet-transform-type-ii-and-least-square-svm