Inference

This service allows you to automatically generate inferences when resources are created, updated or deleted through LDP.

Features

• Extract the inverse relations from provided OWL files
• Automatically generate inverse links on create/update/delete operations
• Add or remove the triples directly to the triple store, in a single query
• More inference types are planned in the future

Dependencies

• TripleStoreService
• LdpService

Install

$ yarn add @semapps/inference

Usage

const { InferenceService } = require('@semapps/inference');

module.exports = {
  mixins: [InferenceService],
  settings: {
    baseUrl: "http://localhost:3000/",
    ontologies : [
      {
        "prefix": "pair",
        "owl": "http://virtual-assembly.org/ontologies/pair/ontology.ttl",
        "url": "http://virtual-assembly.org/ontologies/pair#"
      },
      ...
    ],
  }
};

Service settings

Property	Type	Default	Description
baseUrl	String	required	Base URL of the LDP server
ontologies	[Object]	required	List of ontology used (see example above)

Notes

• Before adding a reverse link, the service checks that the linked resource exists.
• Naturally, the reverse links are not added when the linked resources is on another server.