# Two-level attention mechanism with contrastive learning for heterogeneous graph representation learning

> Research article (Expert Systems with Applications, 2025) · cited 12× · AI/ML

**Wikidata**: [openalex:W4407320432](https://www.wikidata.org/wiki/openalex:W4407320432)  
**Source**: https://4ort.xyz/entity/two-level-attention-mechanism-with-contrastive-learning-for-heterogeneous-graph-representation-learning