# Image classification in frequency domain with 2SReLU: A second harmonics superposition activation function

> Research article (Applied Soft Computing, 2021) · cited 19× · AI/ML

**Wikidata**: [openalex:W3196957369](https://www.wikidata.org/wiki/openalex:W3196957369)  
**Source**: https://4ort.xyz/entity/image-classification-in-frequency-domain-with-2srelu-a-second-harmonics-superposition-activation-function