# A Pólya Urn Document Language Model for Improved Information Retrieval

> Research article (ACM Transactions on Information Systems, 2015) · cited 33× · AI/ML

**Wikidata**: [openalex:W1539587635](https://www.wikidata.org/wiki/openalex:W1539587635)  
**Source**: https://4ort.xyz/entity/a-polya-urn-document-language-model-for-improved-information-retrieval