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COCOMO II Calibration Status

USC-CSE Annual Research Review - March 2004. 2. A Little History. Calibration effort started in January 2002ConfusionRepository in an inconsistent stateUncharacterized" data from many sourcesProcess for duplicating the 2000 calibration resultsSchedule compression rating was inconsistentExpect

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COCOMO II Calibration Status

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    1. COCOMO II Calibration Status USC-CSE Annual Research Review March 2004

    2. USC-CSE Annual Research Review - March 2004 2 A Little History Calibration effort started in January 2002 Confusion Repository in an inconsistent state “Uncharacterized” data from many sources Process for duplicating the 2000 calibration results Schedule compression rating was inconsistent Expectation New data had a lot of variation but… Affiliates (and the user population in general) want an “Accurate” and up-to-date model – not just one that explained variation PRED(.25) versus R2

    3. USC-CSE Annual Research Review - March 2004 3 Change in Approach Removed pre-1990 data from dataset used in calibration This removed a lot of “converted” data Removed “bad” data Incomplete: No duration data, estimated effort, no valid SLOC size Still use the Bayesian calibration approach developed by Chulani Changed to a holistic analysis approach: considered effort and duration together Identified data that needed review Schedule compression was automatically set

    4. USC-CSE Annual Research Review - March 2004 4

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