# A graded proportion method of training sample selection for updating conventional soil maps

> Research article (Geoderma, 2019) · cited 19× · AI/ML

**Wikidata**: [openalex:W2980417643](https://www.wikidata.org/wiki/openalex:W2980417643)  
**Source**: https://4ort.xyz/entity/a-graded-proportion-method-of-training-sample-selection-for-updating-conventional-soil-maps