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Summary and further research• The paired comparisons method provides an structuredapproach for doing subjective estimations which is:– more precise– more accuratethan ad-hoc approaches.• Future research:– Corroboration of results– Validating software verbal scale– Application into domains others than software sizing (effort, leadtime)Ericsson Research Canada October 2000 E. Miranda, COCOMO/SCM 15
References• G. Bozoki, An expert judgement based software sizingmodel, Lockheed Missiles & Space Company and TargetSoftware• J. Karlsson & K. Ryan, A Cost-Value Approach forPrioritizing Requirements, IEEE Software,September/October 1997• T. Saaty, Multicriteria Decision Making: The AnalyticHierarchy Process, RWS Publications, 1996• G. Crawford and C. Williams, The Analysis of subjectivejudgement matrices, Rand Corporation, 1985Ericsson Research Canada October 2000 E. Miranda, COCOMO/SCM 15
Page 1 and 2: Improving subjective estimationsusi
Page 3 and 4: Subjective estimations are a way of
Page 5 and 6: Can we do better? - The paired comp
Page 7 and 8: The math - judgement matrixArtifact
Page 9 and 10: Verbal scalesDefinitionSoftware Rel
Page 11: ExampleBGFCDEIJEricsson Research Ca
Page 14 and 15: Evaluation - geometric figures12010
Page 16 and 17: Evaluation - accuracyAre all the me
Page 20: The EndEricsson Research Canada Oct

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