# Constrained Quaternion-Variable Convex Optimization: A Quaternion-Valued Recurrent Neural Network Approach

> Research article (IEEE Transactions on Neural Networks and Learning Systems, 2019) · cited 122× · AI/ML

**Wikidata**: [openalex:W2952791331](https://www.wikidata.org/wiki/openalex:W2952791331)  
**Source**: https://4ort.xyz/entity/constrained-quaternion-variable-convex-optimization-a-quaternion-valued-recurrent-neural-network-approach