TALOS RDF Graph Viewer

Available languages: English | Ελληνικά

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This repository provides a lightweight, browser-based application for visualizing and exploring RDF graphs.

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📂 Contents

This repository contains:

• Talos_RDF_Viewer.py — the complete source code (all-in-one application)
• TALOS_RDF_Viewer_Documentation.pdf — documentation and usage instructions

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Overview

The TALOS RDF Graph Viewer is a cross-platform, Python web app for interactive RDF exploration. It lets you:

• Upload RDF datasets (.rdf, .xml, .ttl, .jsonld)
• Inspect graph statistics, Dublin Core metadata (from owl:Ontology), and declared namespaces
• Select which properties to visualize (object / data / annotation)
• Generate an interactive graph (drag, freeze physics, search with wildcards, delete nodes)
• Query data via a built-in SPARQL endpoint

It is designed for researchers, educators, and developers and is particularly convenient for ontoterminologies built with the TEDI environment.

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Features

• Multi-format upload: RDF/XML, Turtle, JSON-LD
• Auto-extraction: triples count, property types, Dublin Core (from owl:Ontology), declared namespaces
• Property selector: object, data, annotation (with bulk select/deselect)
• Graph viewer (PyVis):
  • Node labeling priority: otv:shortConceptName → rdfs:label → URI fragment
  • Tooltips with otv:conceptName + full URI
  • Node coloring by role: root / terminal / intermediate / literal
  • Search with * wildcard, case-insensitive; auto-focus + highlighting
  • Physics toggle (Freeze ON/OFF), reset, delete selected node
• SPARQL endpoint: execute queries; ready-made examples
• Responsive UI: modern, accessible, clean design

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Run

# 1) Ensure Python 3.8+ is installed
python --version

# 2) Install dependencies
pip install flask rdflib pyvis

# 3) Run the app
python Talos_RDF_Viewer.py

# 4) Open in your browser (opens automatically)
# http://127.0.0.1:5000

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Author

Prof. Christophe Roche — TALOS ERA Chair Holder — University of Crete

📧 roche.university@gmail.com

🌐 https://talos-ai4ssh.uoc.gr/

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Citation

For general reference to the project:

Roche, C. (2025). TALOS RDF Graph Viewer (Version 1.0).
TALOS AI4SSH Project, University of Crete.
https://talos-ai4ssh.uoc.gr/

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License

All the code is distributed under the Creative Commons Attribution–NonCommercial (CC BY-NC 4.0) license.
You are free to share and redistribute the material under the following conditions:

• BY: Credit must be given to the creator(s).
• NC: Only non-commercial uses are permitted.

More info: https://creativecommons.org/licenses/by-nc/4.0/

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More Information

• TALOS RDF Graph Viewer Website: talos-ai4ssh.eu/RDF_Viewer
• TALOS Project Website: talos-ai4ssh.uoc.gr

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