# Bearing Fault Diagnosis with Variable Speed Based on Fractional Hierarchical Range Entropy and Hunter–Prey Optimization Algorithm–Optimized Random Forest

> Research article (Machines, 2022) · cited 18× · AI/ML

**Wikidata**: [openalex:W4294845486](https://www.wikidata.org/wiki/openalex:W4294845486)  
**Source**: https://4ort.xyz/entity/bearing-fault-diagnosis-with-variable-speed-based-on-fractional-hierarchical-range-entropy-and-hunterprey-optimization-a