# Human Activity Recognition: A Comparative Study to Assess the Contribution Level of Accelerometer, ECG, and PPG Signals

> Research article (Sensors, 2021) · cited 35× · AI/ML

**Wikidata**: [openalex:W3205137388](https://www.wikidata.org/wiki/openalex:W3205137388)  
**Source**: https://4ort.xyz/entity/human-activity-recognition-a-comparative-study-to-assess-the-contribution-level-of-accelerometer-ecg-and-ppg-signals