Paper: brat: a Web-based Tool for NLP-Assisted Text Annotation

ACL ID E12-2021
Title brat: a Web-based Tool for NLP-Assisted Text Annotation
Venue Annual Meeting of The European Chapter of The Association of Computational Linguistics
Session System Demonstration
Year 2012

We introduce the brat rapid annotation tool (BRAT), an intuitive web-based tool for text annotation supported by Natural Language Processing (NLP) technology. BRAT has been developed for rich structured annota- tion for a variety of NLP tasks and aims to support manual curation efforts and in- crease annotator productivity using NLP techniques. We discuss several case stud- ies of real-world annotation projects using pre-release versions of BRAT and present an evaluation of annotation assisted by se- mantic class disambiguation on a multi- category entity mention annotation task, showing a 15% decrease in total annota- tion time. BRAT is available under an open- source license from: