Namespaces Info

This file provides namespace prefix mappings for normalizing IRIs to human-readable prefix:LocalName format across all extraction outputs.

On this page:

• Structure - Complete field reference
• Example - Sample JSON output

Structure

Field	Description
ontology	The ontology's logical prefix and namespace, inferred from VANN annotations or owl:Ontology declarations
prefixes	All namespace prefixes declared in the ontology graph, normalized for JSON serialization
no_prefixes	Namespaces used in the ontology but lacking declared prefixes (remain as full IRIs)

Key Details

• _empty_prefix represents the default namespace declared as @prefix : in the ontology
• _missing is a synthetic fallback prefix for IRIs with no matching namespace
• _missing never appears in this file but may appear in class_info.json and relation_info.json as _missing:LocalName
• All identifiers are normalized to prefix:LocalName format for human readability

Example

{
  "ontology": {
    "prefix": "sc",
    "namespace": "http://pygraf.t/"
  },
  "prefixes": {
    "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
    "owl": "http://www.w3.org/2002/07/owl#",
    "sc": "http://pygraf.t/",
    "_empty_prefix": "http://pygraf.t/"
  },
  "no_prefixes": [
    "http://external.example.org/vocab/",
    "http://another.external/schema#"
  ]
}