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| Criterion |  Knowledge Modeling Competency Questions |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  Operations Family Tree Analysis |
|---|---|---|---|---|
Purposedifferent | Competency Questions translate a domain model into concrete questions that it must be able to answer. The method keeps the model's scope clean and prevents pretty but useless structures. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 2-4 h | 2-4 h | 2-6 h | 2-4 h |
Participantsdifferent | 2-8 | 2-6 | 3-10 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Competency Question Set, Required Concepts, Test Queries, Coverage Matrix | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | OntologyKnowledge graphScopeRequirementsSemantic | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | Root causePatternsIncidentSystemic |