# A survey on techniques to handle face recognition challenges: occlusion, single sample per subject and expression

> Research article (Artificial Intelligence Review, 2017) · cited 80× · AI/ML

**Wikidata**: [openalex:W2756114629](https://www.wikidata.org/wiki/openalex:W2756114629)  
**Source**: https://4ort.xyz/entity/a-survey-on-techniques-to-handle-face-recognition-challenges-occlusion-single-sample-per-subject-and-expression