# A Comparative Study of Multiscale Sample Entropy and Hierarchical Entropy and Its Application in Feature Extraction for Ship-Radiated Noise

> Research article (Entropy, 2019) · cited 32× · AI/ML

**Wikidata**: [openalex:W2967554011](https://www.wikidata.org/wiki/openalex:W2967554011)  
**Source**: https://4ort.xyz/entity/a-comparative-study-of-multiscale-sample-entropy-and-hierarchical-entropy-and-its-application-in-feature-extraction-for-