{"slug": "ontological-knowledge-blocks-executable-compliance-and-profile-based-validation", "title": "Ontological Knowledge Blocks: Executable Compliance and Profile-Based Validation for Trustworthy AI Systems", "summary": "Researchers introduced Ontological Knowledge Blocks (OKBs), a programmable governance infrastructure that compiles regulatory obligations into machine-checkable constraints over structured evidence graphs, addressing the scalability limitations of documentation-centric compliance for AI systems. The framework formalizes obligations as a 5-tuple binding normative rules to RDF/OWL schemas, SHACL validation rules, and provenance links, enabling automated compliance verification without modifying service code. In evaluations across 24 validation runs and four governance profiles for AI-assisted HPC resource allocation, OKBs demonstrated profile-sensitive validation with SHACL latency between 12.6 ms and 100.3 ms, confirming the Combined profile as the most comprehensive.", "body_md": "arXiv:2605.23297v1 Announce Type: new\nAbstract: AI-enabled services deployed in critical digital infrastructure are subject to governance obligations spanning transparency, accountability, fairness, and traceability. Compliance today remains documentation-centric: obligations are described in prose, audits rely on static checklists, and verification depends on manual review. Such approaches do not scale to automated AI systems. This paper introduces Ontological Knowledge Blocks (OKBs), a programmable governance infrastructure that compiles regulatory obligations into machine-checkable constraints over structured evidence graphs. We formalize an OKB as a 5-tuple that binds normative obligations to an RDF/OWL concept schema, executable SHACL validation rules, explicit evidence requirements, and PROV-O provenance links. A deterministic regulatory compiler translates structured Intermediate Representation (IR) records into composable KB modules, enabling profile-based governance reconfiguration without modifying service code. We implement two prototypes and evaluate them in an AI-assisted HPC resource allocation scenario across 24 validation runs and four governance profiles. Results demonstrate profile-sensitive validation, strictly additive violation accumulation, SHACL validation latency between 12.6 ms and 100.3 ms, and profile equivalence testing confirming Combined as the strictly most comprehensive profile. All artefacts are released as open source.", "url": "https://wpnews.pro/news/ontological-knowledge-blocks-executable-compliance-and-profile-based-validation", "canonical_source": "https://arxiv.org/abs/2605.23297", "published_at": "2026-05-25 04:00:00+00:00", "updated_at": "2026-05-25 15:17:19.513987+00:00", "lang": "en", "topics": ["ai-policy", "ai-ethics", "ai-infrastructure", "ai-safety", "ai-research"], "entities": ["Ontological Knowledge Blocks", "SHACL", "RDF/OWL", "PROV-O", "HPC"], "alternates": {"html": "https://wpnews.pro/news/ontological-knowledge-blocks-executable-compliance-and-profile-based-validation", "markdown": "https://wpnews.pro/news/ontological-knowledge-blocks-executable-compliance-and-profile-based-validation.md", "text": "https://wpnews.pro/news/ontological-knowledge-blocks-executable-compliance-and-profile-based-validation.txt", "jsonld": "https://wpnews.pro/news/ontological-knowledge-blocks-executable-compliance-and-profile-based-validation.jsonld"}}