# Trust-region algorithms for training responses: machine learning methods using indefinite Hessian approximations

> Research article (Optimization methods & software, 2019) · cited 19× · AI/ML

**Wikidata**: [openalex:W2811026747](https://www.wikidata.org/wiki/openalex:W2811026747)  
**Source**: https://4ort.xyz/entity/trust-region-algorithms-for-training-responses-machine-learning-methods-using-indefinite-hessian-approximations