# Relation classification via BERT with piecewise convolution and focal loss

> Research article (PLoS ONE, 2021) · cited 16× · AI/ML

**Wikidata**: [openalex:W3198459947](https://www.wikidata.org/wiki/openalex:W3198459947)  
**Source**: https://4ort.xyz/entity/relation-classification-via-bert-with-piecewise-convolution-and-focal-loss