# Fisher’s discriminant ratio based health indicator for locating informative frequency bands for machine performance degradation assessment

> Research article (Mechanical Systems and Signal Processing, 2021) · cited 52× · AI/ML

**Wikidata**: [openalex:W3175100823](https://www.wikidata.org/wiki/openalex:W3175100823)  
**Source**: https://4ort.xyz/entity/fishers-discriminant-ratio-based-health-indicator-for-locating-informative-frequency-bands-for-machine-performance-degra