1. COSYSMO: Constructive Systems Engineering Cost Model
USC CSC Workshop
25-26 October 2001
26 October 2001
DRAFT

2. Participants 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
26 October 2001
DRAFT

3. 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
26 October 2001
DRAFT

4. 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
Inception Elaboration Construction Transition
26 October 2001
DRAFT

5. Scope and Approach Size COSYSMO Effort Cost Drivers Duration
# 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
26 October 2001
DRAFT

6. 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
26 October 2001
DRAFT

7. Plan of Action & Milestones
Task Due Date Responsible*
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
26 October 2001
DRAFT

8. 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
26 October 2001
DRAFT