Using Dbpedia and Wikidata Knowledge Graphs With Neo4j
summary
Built a web app that imports Dbpedia and Wikidata into Neo4j via API and Java, ending up with 20M nodes and 1M relationships, exposes graph visualizations and a semantic search UI. To avoid billions of traversals properties are grouped into source-specific nodes like DbpediaProperty nodes and WikidataProperty nodes, reducing traversal cost. Entities live only in their chosen category rather than being replicated across topic/category/subcategory, simplifying writes and keeping queries performant.
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chapters (7)
- 0:00Introduction and motivation
- 3:05Semantic web and Neo4j overview
- 9:58Application features and interface
- 13:56Importing DBpedia and Wikidata data
- 18:05Storing entities in categories
- 22:48Query examples and performance
- 25:01Conclusion and future outlook
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