# BIDI: A classification algorithm with instance difficulty invariance

> Research article (Expert Systems with Applications, 2020) · cited 13× · AI/ML

**Wikidata**: [openalex:W3082150842](https://www.wikidata.org/wiki/openalex:W3082150842)  
**Source**: https://4ort.xyz/entity/bidi-a-classification-algorithm-with-instance-difficulty-invariance