A lightweight, web-based raw text annotation tool for collaborative annotation projects with support for complex schemas.
Anafora is a web-based raw text annotation tool designed for collaborative annotation projects. It allows multiple annotators to work remotely on text data using complex annotation schemas, with all data stored on a central server to simplify management and compliance with data-use agreements. The tool supports both spanned and spanless annotations, relations, and properties, making it suitable for a wide range of annotation tasks.
Researchers, linguists, and data scientists working on annotation projects requiring remote collaboration and support for complex annotation schemas, such as in natural language processing or computational linguistics.
Developers choose Anafora for its lightweight, web-based design that eliminates local installation and storage hassles, its simplicity in data management using human-readable XML, and its robust support for complex annotation workflows without the overhead of traditional tools.
Anafora is a web-based raw text annotation tool
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Enables remote annotation from any modern browser without local installation, facilitating cross-platform collaboration as highlighted in the README's focus on eliminating local software needs.
Uses human-readable XML for schemas and annotations stored in a static filesystem, avoiding databases and simplifying data management for automated workflows.
Annotations are cached and auto-saved to the server every 2 minutes with local storage backup, reducing data loss during connectivity interruptions as described in the annotation workflow.
Handles spanned and spanless annotations, relations, and properties, making it suitable for multi-step annotation workflows and complex NLP tasks.
Requires a Linux/Unix server with Apache and Django, which can be a significant barrier for teams without sysadmin expertise, as noted in the pending installation details.
Not compatible with Internet Explorer and requires Webkit-based browsers, restricting access in environments with legacy browser policies.
The 2-minute auto-save cycle may not suffice for projects needing immediate save confirmation or real-time collaboration, posing a risk for data integrity in fast-paced workflows.
Installation instructions are marked as 'more details pending' in the README, making initial setup and troubleshooting challenging for new users.
Anafora is an open-source alternative to the following products: