# Building a DDC Annotated Corpus from OAI Metadata

> Research article (PUB – Publications at Bielefeld University (Bielefeld University), 2019) · cited 10× · AI/ML

**Wikidata**: [openalex:W1537310530](https://www.wikidata.org/wiki/openalex:W1537310530)  
**Source**: https://4ort.xyz/entity/building-a-ddc-annotated-corpus-from-oai-metadata