# HARFE: hard-ridge random feature expansion

> Research article (Sampling Theory Signal Processing and Data Analysis, 2023) · cited 12× · AI/ML

**Wikidata**: [openalex:W4385705583](https://www.wikidata.org/wiki/openalex:W4385705583)  
**Source**: https://4ort.xyz/entity/harfe-hard-ridge-random-feature-expansion