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Selected:Fishbone DiagramCompetency QuestionsFault Tree AnalysisATAM (Architecture Tradeoff Analysis Method)
| Criterion |  Operations Fishbone Diagram |  Knowledge Modeling Competency Questions |  Operations Fault Tree Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
Purposedifferent | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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 critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. |
Complexitydifferent | Low | Medium | High | High |
Timedifferent | 30-60 min | 2-4 h | 2-6 h | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 2-8 | 2-8 | 3-8 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Competency Question Set, Required Concepts, Test Queries, Coverage Matrix | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | Root causeQualityOperations | OntologyKnowledge graphScopeRequirementsSemantic | RiskRoot causeSafety | ArchitectureQualityRiskTradeoffsStakeholders |