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Using Public RDF Resources in Neo4j
This document discusses using public RDF resources in Neo4j graphs. It describes various RDF resources like databases, annotated datasets, and public vocabularies that are available. It then explains how to access these resources through bulk download, APIs, SPARQL queries, or by converting RDF to Neo4j's native property graph format using the n10s tool. The document demonstrates importing various life science and disease datasets to create a COVID-19 knowledge graph in Neo4j in under 20 minutes. It encourages users to download Neo4j and n10s and link additional public data sources to explore applications like semantic search, knowledge discovery, and reconciliation.
Using Public RDF Resources in Neo4j
- 1. Using public (lifesciences & healthcare) RDF resources in Neo4j Dr. Jesús Barrasa Director Sales Engineering EMEA - Neo4j
- 2. Based in LondonUK. With Neo4j for 5 years (but a life of graphs) Head of Sales Engineering in Europe. Lead the Neosemantics (n10s) Labs project. Me
- 3. Data practitioners withsome basic understanding of both RDF and Neo4j Who is this talk for?
- 4. What are RDFresources? Databases Annotated Datasets Public Vocabularies Ontologies Constraints RDF
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- 6. How to accessthem? ● Bulk download ● API ○ URI deref ○ SPARQL ■ CONSTRUCT ■ DESCRIBE ■ SELECT https://www.nlm.nih.gov/databases/download/mesh.html
- 7. What is RDF? •A Model : URIs and Triples • A query language: SPARQL (Uris and Triples… and variables) • A number of serialisation formats: JSON-LD, Turtle, RDF/XML,... “RDF is a standard model for data interchange on the Web” RDF Spec (https://www.w3.org/RDF/)
- 8. RDF triples forma graph <http://www.wikidata.org/entity/Q84263196> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.wikidata.org/category/Disease> . <http://www.wikidata.org/entity/Q84263196> <http://www.w3.org/2000/01/rdf-schema#label> "COVID-19" . <http://www.wikidata.org/entity/Q84263196> <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://www.wikidata.org/entity/Q2633267> . <http://www.wikidata.org/entity/Q2633267> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.wikidata.org/category/Disease> . <http://www.wikidata.org/entity/Q2633267> <http://www.w3.org/2000/01/rdf-schema#label> "Atypical pneumonia" .
- 9. What is RDF?The Serialisation Formats JSON-LD N-Triples RDF/XML Turtle
- 10. ● object isa Literal ↳ a node property● ● object is a resource ↳ a relationship● ● predicate is rdf:type ↳ a node label RDF fits nicely into a Property Graph https://jbarrasa.com/2016/06/07/importing-rdf-data-into-neo4j/
- 11. n10s does itfor you
- 12. Neo4j-RDF integration URL DEREF→ RDF → n10s SPARQL DESCRIBE → RDF → n10s SPARQL CONSTRUCT → RDF → n10s RDF DUMP → RDF → n10s SPARQL SELECT → TABLE → LOAD CSV, APOC
- 13. Let’s build aMVG for : • Semantic search • Knowledge discovery • Knowledge reconciliation Let’s do it… in 20 minutes! https://www.gartner.com/en/documents/3985680
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- 15. Next Steps ● Addmore datasources ● Use Graph Algorithms ● Advanced Ontology/Schema usage: ○ Inferencing / Validation
- 16. COVID-19 Knowledge GraphProject https://covidgraph.org/
- 17. Your turn! Download Neo4j+ n10s https://neo4j.com/labs/neosemantics-rdf/ Link to sources from today’s session https://github.com/jbarrasa/connections-lifesci
- 18. Using public (lifesciences & healthcare) RDF resources in Neo4j Dr. Jesús Barrasa Director Sales Engineering EMEA - Neo4j Questions?