CATMA

CATMA

CATMA is a free, open-source web application for computer-assisted text annotation and analysis. It allows users to upload texts, define annotation schemas, and annotate the texts collaboratively either manually or automatically. CATMA facilitates quantitative text analysis and f
CATMA image
text-annotation text-analysis collaboration visualization

CATMA: Computer-Assisted Text Annotation and Analysis

Free, open-source web application for collaborative text annotation, automatic annotation, and quantitative text analysis with visualization tools

What is CATMA?

CATMA (Computer-Assisted Text Markup and Analysis) is a free, open-source web application designed for collaborative text annotation, analysis, and visualization. Developed at the Hamburg University's Centre for the Study of Manuscript Cultures, CATMA allows researchers to upload texts, define annotation tagsets and schemas, manually annotate texts or automatically pre-annotate them, analyze annotations quantitatively, and visualize the results.

Some key features of CATMA include:

  • Uploading texts in a variety of formats like PDF, Word, XML, etc.
  • Defining annotation schemas and tags flexibly based on projects' needs
  • Manual text annotation with an intuitive, customizable web interface
  • Pre-annotation using NLP tools like part-of-speech taggers, named entity recognizers, etc.
  • Quantitative analysis of annotations with statistical overviews and comparisons
  • Data visualization including graphs of annotation frequencies, dendrograms, heat maps etc.
  • Collaboration features for sharing texts and annotations
  • Customizable access permissions for teams
  • Exporting annotations to standard formats like JSON, CSV, XML

With its emphasis on collaboration, custom annotation schemas, both manual and automated annotation, quantitative analysis, and data visualization, CATMA provides a powerful platform for researchers working with textual analysis across disciplines like linguistics, literature, history, political science, and more.

CATMA Features

Features

  1. Upload texts
  2. Define annotation schemas
  3. Annotate texts collaboratively
  4. Manual or automatic annotation
  5. Quantitative text analysis
  6. Visualization tools

Pricing

  • Open Source

Pros

Free and open source

Web-based for easy access

Collaborative annotation

Supports manual and automatic annotation

Quantitative analysis capabilities

Visualizations for analysis

Cons

Limited to text annotation and analysis

Requires technical expertise to set up and use effectively

Collaborative features may be limited

Visualizations could be more advanced


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