# Machine learning in M4: What makes a good unstructured model?

> Research article (International Journal of Forecasting, 2019) · cited 43× · AI/ML

**Wikidata**: [openalex:W2965971168](https://www.wikidata.org/wiki/openalex:W2965971168)  
**Source**: https://4ort.xyz/entity/machine-learning-in-m4-what-makes-a-good-unstructured-model