# A systematic literature review of sparsity issues in recommender systems

> Research article (Social Network Analysis and Mining, 2020) · cited 127× · AI/ML

**Wikidata**: [openalex:W3013471144](https://www.wikidata.org/wiki/openalex:W3013471144)  
**Source**: https://4ort.xyz/entity/a-systematic-literature-review-of-sparsity-issues-in-recommender-systems