# Markup: A Web-Based Annotation Tool Powered by Active Learning

> Research article (Frontiers in Digital Health, 2021) · cited 12× · AI/ML

**Wikidata**: [openalex:W3183397339](https://www.wikidata.org/wiki/openalex:W3183397339)  
**Source**: https://4ort.xyz/entity/markup-a-web-based-annotation-tool-powered-by-active-learning