# HKGCL: Hierarchical graph contrastive learning for multi-domain recommendation over knowledge graph

> Research article (Expert Systems with Applications, 2023) · cited 19× · AI/ML

**Wikidata**: [openalex:W4383877418](https://www.wikidata.org/wiki/openalex:W4383877418)  
**Source**: https://4ort.xyz/entity/hkgcl-hierarchical-graph-contrastive-learning-for-multi-domain-recommendation-over-knowledge-graph