Introducing the Open Source Semantic Graph Editor of Deutsche Bahn
summary
Deutsche Bahn open-sources a semantic graph editor that runs on Neo4j label property graphs, with a Python/Flask backend and React + SigmaJS frontend, released on GitHub in August. It stores a metamodel in the database to provide semantic editing (schema as recommendations, not enforced), supports HTML in nodes and dynamic Python-based styling, and persists node arrangements as perspectives. Users get parameterized power queries (forms that generate Cypher), can visualize ~5k–10k nodes via WebGL, and edit content and metamodel together.
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chapters (14)
- 0:00Introduction to the project
- 1:09Deutsche Bahn and our team
- 3:15Why we built our own tool
- 5:40Demo of the graph editor
- 8:34Perspectives and layouts
- 11:51Semantic support in the editor
- 17:06Everyday use and features
- 18:31Power queries for users
- 21:05Navigating data with queries
- 23:46Future plans and roadmap
- 24:50How to contribute and feedback
- 25:34Performance on large graphs
- 27:23Bonus feature demonstration
- 29:13Closing and Q&A
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