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| Criterion |  Operations 8D Problem Solving |  Operations Barrier Analysis |  Knowledge Modeling NeOn Methodology |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | The NeOn Methodology structures ontology work as a controlled process with reuse, scenarios, and reviews. It is useful when ontologies should not emerge ad hoc but modularly and reusably. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | High | Medium | High | Low |
Timedifferent | 1-6 Wochen | 2-4 h | Mehrere Wochen bis Monate | 15-30 min |
Participantsdifferent | 4-10 | 2-6 | 2-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Ontology Requirements Specification, Reuse Plan, Ontology Modules, Evaluation Report | Root cause notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | Root causeSafetyIncident | OntologyMethodologyReuseSemanticEngineering | Root causeIncidentLeanProblem solving |