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Ontology Update 0.0.2

This update applies the ontology changes reviewed in GitHub issues #20, #22, #23, #30, #52, and #55.

Applied Changes

  • Added seovoc:isThinContent as a boolean datatype property on schema:Thing.
  • Added GA4 WebPage metrics: users, sessions, engagedSessions, engagementRate, averageEngagementTime, conversions, trafficSource, and landingPage.
  • Added query clustering support with QueryCluster, ClusteringStrategy, hasClusterQuery, isClusterQueryOf, clusteredBy, dominantSearchIntent, clusterVolume, and keywordsCount.
  • Corrected seovoc:isLinkOf so it points from Link back to LinkGroup, matching hasLink.
  • Corrected seovoc:evaluationID to use xsd:string.
  • Corrected seovoc:contentDepthScore to use xsd:float.
  • Preserved page-level seoScore and readabilityGradeLevel for compatibility.

Compatibility Notes

The canonical model for structured navigational links is:

WebPage -> hasLinkGroup -> LinkGroup -> hasLink -> Link

The direct seovoc:link property remains available for ungrouped or raw extracted links. Legacy data that used seovoc:isLinkOf from Link directly to WebPage should either use seovoc:link or introduce a LinkGroup connected from the page with seovoc:hasLinkGroup.

Query clustering intentionally uses hasClusterQuery and isClusterQueryOf instead of overloading hasQuery and isQueryOf, which remain scoped to WebPage and Query.

Verification

The update was verified by:

  • converting seovoc.owx to seovoc.owl with ROBOT;
  • converting seovoc.owx to seovoc.ttl with ROBOT;
  • parsing generated RDF artifacts;
  • checking issue-mapped domains, ranges, classes, and inverse properties across source and generated artifacts;
  • confirming seovoc.owx.md5 matches the current seovoc.owx.