# Quaternion block sparse representation for signal recovery and classification

> Research article (Signal Processing, 2020) · cited 25× · AI/ML

**Wikidata**: [openalex:W3093252450](https://www.wikidata.org/wiki/openalex:W3093252450)  
**Source**: https://4ort.xyz/entity/quaternion-block-sparse-representation-for-signal-recovery-and-classification