# Hierarchical Itemspace Rank: Exploiting hierarchy to alleviate sparsity in ranking-based recommendation

> Research article (Neurocomputing, 2015) · cited 36× · AI/ML

**Wikidata**: [openalex:W2065334564](https://www.wikidata.org/wiki/openalex:W2065334564)  
**Source**: https://4ort.xyz/entity/hierarchical-itemspace-rank-exploiting-hierarchy-to-alleviate-sparsity-in-ranking-based-recommendation