Ontology reference

The pgc: vocabulary (prefix: https://pg-ripple.org/compile#) is defined in ontology/pgc.ttl. This page documents every class, property, and named individual.

Classes

pgc:Source

A registered source document (file, API response, issue, etc.).

SELECT ?source WHERE { ?source a pgc:Source . }

pgc:Fragment

A stable section of a source (heading block, page, time segment, etc.).

SELECT ?fragment ?key WHERE {
  ?fragment a pgc:Fragment ;
            pgc:fragmentKey ?key .
}

pgc:Profile

A versioned compiler profile: JSON Schema + system prompt + editorial policy.

SELECT ?profile ?name ?version WHERE {
  ?profile a pgc:Profile ;
           pgc:profileName ?name ;
           pgc:profileVersion ?version .
}

pgc:Run

One compile attempt for a fragment under a profile.

SELECT ?run ?outcome ?cost WHERE {
  ?run a pgc:Run ;
       pgc:outcome ?outcome ;
       pgc:costUsd ?cost .
}

pgc:Synthesis

An atomic compiled artifact (a triple or named claim) written to the graph. Subclass of pgc:Artifact.

SELECT ?artifact ?confidence WHERE {
  ?artifact a pgc:Synthesis ;
            pgc:confidence ?confidence .
}

pgc:LintFinding

A quality finding raised by the lint pass.

SELECT ?finding ?type ?message WHERE {
  ?finding a pgc:LintFinding ;
           pgc:findingType ?type ;
           pgc:findingMessage ?message .
}

pgc:ArgumentRecord

A structured argument for or against a claim.

SELECT ?arg ?claim ?strength WHERE {
  ?arg a pgc:ArgumentRecord ;
       pgc:claim ?claim ;
       pgc:strength ?strength .
}

pgc:AssumptionRecord

An explicit assumption made during compilation.

SELECT ?assumption ?text ?status WHERE {
  ?assumption a pgc:AssumptionRecord ;
              pgc:assumptionText ?text ;
              pgc:status ?status .
}

pgc:NegativeKnowledge

A recorded absence of evidence for a claim.

SELECT ?nk ?subject ?predicate ?reason WHERE {
  ?nk a pgc:NegativeKnowledge ;
      pgc:aboutSubject ?subject ;
      pgc:negatedPredicate ?predicate ;
      pgc:reason ?reason .
}

pgc:CoverageMap

Coverage tracking for compiled concepts.

SELECT ?concept ?level WHERE {
  ?cm a pgc:CoverageMap ;
      pgc:concept ?concept ;
      pgc:coverageLevel ?level .
}

pgc:RenderedPage

A page rendered from compiled knowledge.

SELECT ?page ?format ?renderedAt WHERE {
  ?page a pgc:RenderedPage ;
        pgc:format ?format ;
        pgc:renderedAt ?renderedAt .
}

Properties

pgc:fromFragment

Links a compiled artifact to its source fragment. Subproperty of prov:wasDerivedFrom.

• Domain: pgc:Synthesis
• Range: pgc:Fragment

pgc:byProfile

The compiler profile used to produce an artifact.

• Domain: pgc:Synthesis
• Range: pgc:Profile

pgc:confidence

Confidence score assigned by the extractor.

• Range: xsd:float (0.0–1.0)

pgc:epistemicStatus

Epistemic status tag. One of: observed, extracted, inferred, verified, deprecated, normative, predicted, disputed, speculative.

• Range: xsd:string

pgc:evidenceSpan

JSON object: {char_start, char_end, excerpt}.

• Range: xsd:string (JSON)

pgc:compiledAt

Timestamp of the compiler run. Subproperty of prov:generatedAtTime.

• Range: xsd:dateTime

pgc:tenantId

Tenant identifier for RLS scoping.

• Range: xsd:string

pgc:aboutSubject

Subject of a negative knowledge or argument record.

pgc:negatedPredicate

The predicate whose absence is recorded.

pgc:reason

Human-readable explanation (for negative knowledge or assumptions).

pgc:claim

The fact being argued about (in ArgumentRecord).

pgc:evidence

Fragment supporting a claim (in ArgumentRecord).

pgc:objection

Counter-argument text (in ArgumentRecord).

pgc:rebuttal

Response to an objection (in ArgumentRecord).

pgc:strength

Argument strength (0.0–1.0).

pgc:assumptionText

Text of an explicit assumption.

pgc:concept

Concept reference (in CoverageMap).

pgc:coverageLevel

Coverage level: covered, partial, uncovered.

pgc:format

Render format: markdown, jsonld, html.

pgc:dependsOn

Dependency edge from a rendered page to a source fact.

Source

The canonical source is ontology/pgc.ttl.