# Extracting acoustic emission features that precede hard rock instability with unsupervised learning

> Research article (Engineering Geology, 2022) · cited 47× · AI/ML

**Wikidata**: [openalex:W4283015872](https://www.wikidata.org/wiki/openalex:W4283015872)  
**Source**: https://4ort.xyz/entity/extracting-acoustic-emission-features-that-precede-hard-rock-instability-with-unsupervised-learning