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COSYSMO: Constructive Systems Engineering Cost Model. USC CSC Workshop 25-26 October 2001. Elliot Axelband, USC Kim Bell, Aerospace Joe Betser, Aerospace Barry Boehm, USC Linda Brooks, TRW Gary Hafen, LMCO Cheryl Jones, US Army Tony Jordano, SAIC Dan Ligett, Softstar. Ray Kile, CSM
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COSYSMO: Constructive Systems Engineering Cost Model USC CSC Workshop 25-26 October 2001 DRAFT
Elliot Axelband, USC Kim Bell, Aerospace Joe Betser, Aerospace Barry Boehm, USC Linda Brooks, TRW Gary Hafen, LMCO Cheryl Jones, US Army Tony Jordano, SAIC Dan Ligett, Softstar Ray Kile, CSM Karen Lum, JPL Karen Owens, Aerospace Don Reifer, USC Gary Thomas, Raytheon Ariel Tonnu, US Air Force Ricardo Valerdi, USC Marilee Wheaton, TRW Participants DRAFT
Agenda • Introductions • Goals of effort • Review of previous work and contributions • Agreement on scope and approach • Proposed plan of action and milestones • Assignment of responsibilities • Summary and conclusions DRAFT
Goals of Effort • Build a COCOMO-like model for estimating system engineering resources • Member of the COCOMO family of models • COSYSMO (Constructive System Engineering Model) fills in the holes not covered by COCOMO II InceptionElaborationConstructionTransition DRAFT
Scope and Approach # Requirements # Interfaces # TPM’s # Scenarios # Modes # Platforms # Algorithms Size COSYSMO Effort Cost Drivers Duration WBS guided By EIA 632 • Application factors • 7 factors • Team factors • 8 factors Calibration DRAFT
Agreements • Use USC seven step model building process • Keep things simple • Start with Inception phase first • Use EIA 632 to bound effort • Focus on software intensive systems • Build on previous work • Shoot for having something meaningful done by mid-March 2002 • Much of the work done by volunteers, so must be conservative in estimates DRAFT
Plan of Action & Milestones • TaskDue DateResponsible* • Develop reference system 11//01/01 Reifer/Valerdi • Define cost drivers 11/16/01 Wheaton/Valerdi • Define size drivers 11/16/01 Hafen/Thomas • Define effort scope 11/16/01 Hafen/Thomas • Finalize survey instrument 11/30/01 Thomas/Valerdi • Send materials out for review 12/03/01 All focal points • Hold net meeting/discuss results 12/11/01 All focal points • Updates done/Delphi defined 01/14/02 Reifer/Valerdi • Send Delphi out 01/15/02 All focal points • Complete Delphi round 02/15/02 Reifer/Valerdi • Update done based on results 03/05/02 Reifer/Valerdi • Present results at annual review 03/12/02 Valerdi * Axelband/Boehm involved in all activities DRAFT
Summary and Conclusions • Had a productive meeting • Everyone contributed • Plan of action and milestones defined • Looking forward to results Thanks to our group for a job well done DRAFT