# A survey of research hotspots and frontier trends of recommendation systems from the perspective of knowledge graph

> Research article (Expert Systems with Applications, 2020) · cited 151× · AI/ML

**Wikidata**: [openalex:W3043178100](https://www.wikidata.org/wiki/openalex:W3043178100)  
**Source**: https://4ort.xyz/entity/a-survey-of-research-hotspots-and-frontier-trends-of-recommendation-systems-from-the-perspective-of-knowledge-graph