# RETRACTED ARTICLE: An efficient e-learning recommendation system for user preferences using hybrid optimization algorithm

> Research article (Soft Computing, 2021) · cited 30× · AI/ML

**Wikidata**: [openalex:W3171110056](https://www.wikidata.org/wiki/openalex:W3171110056)  
**Source**: https://4ort.xyz/entity/retracted-article-an-efficient-e-learning-recommendation-system-for-user-preferences-using-hybrid-optimization-algorithm