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URL: http://brat.nlplab.org/index.html
Proper Citation: brat rapid annotation tool (RRID:SCR_008769)
Description: brat is a free, open-source, web-based tool for text annotation, visualisation and editing. brat is designed in particular for structured annotation, where the notes are not freeform text but have a fixed form that can be automatically processed and interpreted by a computer. brat is built entirely on standard web technologies, and it is not necessary to install any local software or browser plugins to use it. An annotator can set up and start using brat simply by entering the address of the brat installation into the address bar of a browser. (Setting up an entirely new brat server does require some action, but can be done in just five minutes on any system running a web server.) brat is fully configurable and can support a wide variety of annotation tasks, including, for example: * entity mention (named entity) annotation * binary relation annotation * dependency syntactic annotation * structured, n-ary event annotation * attribute/meta-knowledge annotation (e.g. negation, speculation, etc.) The tool also provides annotation support features such as text and annotation search with detailed constraints, keyword-in-context concordancing, and integrated configurable checking of task-specific semantic constraints. Annotations created in brat can be exported with a few clicks from the interface in a simple standoff format that can be easily analyzed, processed, and converted into other formats. Visualizations can be similarly be exported in their native SVG format, rendered as a bitmap (PNG format), or converted into other vector formats for embedding into documents (PDF or EPS). brat is developed as a collaborative effort between several research groups as an open source project (MIT license), and we warmly welcome contributions and participation from the community, including feature requests. We hope this tool will prove valuable to the natural language processing community, and will gladly answer questions and welcome any feedback.
Abbreviations: brat
Synonyms: brat rapid annotation tool - online environment for collaborative text annotation
Resource Type: service resource, software resource
Keywords: language processing, annotation, chunking, coreference resolution, dependency syntax, event extraction, entity mention detection, semantic mark up
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