# A weak fault feature extraction of rolling element bearing based on attenuated cosine dictionaries and sparse feature sign search

> Research article (ISA Transactions, 2019) · cited 44× · AI/ML

**Wikidata**: [openalex:W2966763612](https://www.wikidata.org/wiki/openalex:W2966763612)  
**Source**: https://4ort.xyz/entity/a-weak-fault-feature-extraction-of-rolling-element-bearing-based-on-attenuated-cosine-dictionaries-and-sparse-feature-si