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| Criterion |  Operations Change Analysis |  Engineering Goal Question Metric |  Engineering Fault Isolation |
|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | Helps clarify technical problems, hypotheses, and next steps in concrete terms. It breaks a technical problem into testable parts. The result is captured as a GQM table and metric briefs. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 45-120 min | 90-180 min | 30-180 min |
Participantsdifferent | 2-6 | 3-6 | 1-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | GQM Table, Metric Profiles | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | MetricsMeasurementEngineeringAlignment | TroubleshootingDiagnosisEngineering |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
