# Non-negative matrix factorization temporal topic models and clinical text data identify COVID-19 pandemic effects on primary healthcare and community health in Toronto, Canada

> Research article (Journal of Biomedical Informatics, 2022) · cited 25× · AI/ML

**Wikidata**: [openalex:W4213310220](https://www.wikidata.org/wiki/openalex:W4213310220)  
**Source**: https://4ort.xyz/entity/non-negative-matrix-factorization-temporal-topic-models-and-clinical-text-data-identify-covid-19-pandemic-effects-on-pri