Issue 178 addition of CASE investigation:Investigator subclasses
This Pull Request resolves all requirements of Issue # 178 .
Summary
Added investigator role subclasses and SHACL shapes in ontology/investigation/investigation.ttl: Academic, Civil Society, Corporate, Human Rights, Insurance, Intelligence, Law Enforcement, Military, Private, Regulatory Updated ChangeLog to note CASE Issue 178.
Rationale
These subclasses make investigator roles explicit to support clearer modeling, validation, and downstream reasoning across CASE implementations.
Scope of change
Additions only; no breaking removals or cardinality changes anticipated. Files touched: ontology/investigation/investigation.ttl ChangeLog
Risk and compatibility
Low risk, additive changes; backward compatible with existing data and tooling.
Validation
Shapes defined alongside classes to support validation. Ontology compiles and normalizes as expected with standard CASE workflows.
This PR passed Solutions Review by the CDO OC on 10/21/2025. It can be merged once @ajnelson-nist is ready.