W3C Workshop on Web Standardization for Graph Data: Rules and Reasoning

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2019-03-10: W3C Workshop on Web Standardization for Graph Data: Rules and Reasoning
By Harold Boley
The W3C Workshop on Web Standardization for Graph Data - Creating Bridges: RDF, Property Graph and SQL was held, 4-6 March 2019, in Berlin, Germany. Its Session on Rules and Reasoning, moderated by Harold Boley and Dörthe Arndt, is captured in these minutes and this report. Harold presented introductory slides and Dörthe provided a proposal on Notation3 logic as a starting point to reason over RDF/LPG graphs. The discussion went, e.g., into the one-way return heuristic as a rule example in PSOA RuleML, based on the property-parameterized CONNECTION fact example in Cypher. Rules were a popular topic not only in this session but also in other sessions and throughout the workshop. In particular, participants were interested in the following kinds of rules:

  • Rules for graph knowledge inference
  • Rules for graph data transformation/mapping
  • Rules for graph data validation
  • Rules for RDF shapes, especially SHACL rules to derive RDF triples from asserted triples
  • Rules for (controlled) natural language parsing and generation

For more information, see http://wiki.ruleml.org/index.php/Graph-Relational_Data,_Ontologies,_and_Rules.