# A novel hybrid PSO-based metaheuristic for costly portfolio selection problems

> Research article (Annals of Operations Research, 2021) · cited 44× · AI/ML

**Wikidata**: [openalex:W3154623308](https://www.wikidata.org/wiki/openalex:W3154623308)  
**Source**: https://4ort.xyz/entity/a-novel-hybrid-pso-based-metaheuristic-for-costly-portfolio-selection-problems