# Multiscale three-dimensional Holo–Hilbert spectral entropy: a novel complexity-based early fault feature representation method for rotating machinery

> Research article (Nonlinear Dynamics, 2023) · cited 15× · AI/ML

**Wikidata**: [openalex:W4327861050](https://www.wikidata.org/wiki/openalex:W4327861050)  
**Source**: https://4ort.xyz/entity/multiscale-three-dimensional-holohilbert-spectral-entropy-a-novel-complexity-based-early-fault-feature-representation-me