Upload
marjory-johnston
View
220
Download
0
Embed Size (px)
Citation preview
Copyright © 2001, Software Productivity Consortium NFP, Inc.
SOFTWARE
PRODUCTIVITY
CONSORTIUM
SOFTWARE
PRODUCTIVITY
CONSORTIUM
COSYSMOOverview
INCOSE IW’2002
Measurement Working Group
February 3-7, 2002
2Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Briefing Outline
• Introduction to COSYSMO Project
• COSYSMO reference system
• Effort
• Size Drivers
• Cost Drivers
• Plans and Milestones
• Delphi (Round I)
• Conclusion
3Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
COSYSMO Overview
• COSYSMO (Constructive SYStem engineering cost MOdel)
• Member of USC COCOMO II suite of cost estimation models
• COSYSMO is being developed to estimate the system engineering effort and duration for software-intensive systems
• Uses SE tasks from EIA 632
• Current stage of COSYSMO involves only inception phase of the MBASE systems development life cycle—Future versions will address latter life cycle
phases
4Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Participants• Chris Abts, USC• Elliot Axelband, USC• Roger Bate, CMU• Kim Bell, Aerospace• Joe Betser, Aerospace• Barry Boehm, USC• Linda Brooks, TRW• Winsor Brown, USC• Sunita Chulani, USC • Nancy Eickelmann, Motorola• Lisa Finneran, SPC• Dan Galorath, Galorath• Don Greenlee, SAIC• Gary Hafen, LMCO• Gloria Isler, LMCO• Cheryl Jones, US Army
• Tony Jordano, SAIC• W. Kelberlau, Raytheon• Ray Kile, CSM• Dan Ligget, Softstar• Karen Lum, JPL• Chris Miller, SPC• Karen Owens, Aerospace• Don Reifer, USC• Garry Roedler, LMCO• Walker Royce, Rationale• Evin Stump, Galorath• Gary Thomas, Raytheon• Ariel Tonnu, US Air Force• Ricardo Valerdi, USC• Marilee Wheaton, TRW• Ye Yang, USC
5Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Reference System• The COSYSMO project framed the model using a
reference system (Satellite Ground System)—Identified systems engineering activties—Defined the components of the labor estimate
• Reference System facilitated the identification of systems engineering tasks/jobs in terms of:—General Systems Engineering Tasks—Software—Hardware—Communications Architecture: Interfaces view
• Initial scope of COSYSMO model is based on the scope of the example system
• http://sunset.usc.edu/SSCS/toc.html
6Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Effort
• The COSYSMO model is being developed to be compatible with COCOMO II
• Its underlying effort estimating equation will be of the following form:
Where:
a = constant
Size = estimate of the size of the systems engineering effort
SD = size drivers
EM = Effort Multipliers
)(1SizeEMaEfforti
n
i j
m
jSDSize1
7Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Scope Drivers
• Scope Driver activities are from EIA 632
—Supplier Performance
—Technical Management
—Requirements Definition
—Solution Definition
—Systems Analysis
—Requirements Validation
—Design Solution Verification
—End Products Validation/Purchased Products
8Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Size Drivers
• Number of System Requirements
• Number of Major Interfaces
• Number of Technical Performance Measures
• Number of Operational Scenarios
• Number of Modes of Operations
• Number of Different Platforms
• Number of Unique Algorithms
9Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Cost Drivers
• Requirements Understanding
• Architecture Understanding
• Level of Service requirements, Criticality, difficulty
• Legacy transition complexity
• COTS assessment complexity
• Platform difficulty
• Required process reengineering
• Number and diversity of stakeholder communities
• Stakeholder team cohesion
• Personnel capability
• Personnel experience / continuity
• Process Maturity
• Multi-site Coordination
• Formality of deliverables
• Tool Support
10Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Plan of Action and MilestonesTask Due Date Status
Develop reference system 11/01/01 Complete
Define cost drivers 11/16/01 Complete
Define size drivers 11/16/01 Complete
Define effort scope 11/16/01 Complete
Finalize survey instrument 11/30/01 Complete
Updates done/Delphi defined 01/14/02 Complete
Send Delphi out 01/15/02 In Progress
Complete Delphi round 02/15/02
Update done based on results 03/05/02
Present results at annual review 03/12/02
11Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
Delphi Round I • Delphi Objectives:
—Determine range for the size of each driver and relative effort per difficulty class
—Determine range of effort multiplier values
• This Delphi effort will initially calibrate the model based on expert opinions
• Data from completed systems will then be used to determine statistical accuracy
• Delphi Round I ends February 15th, 2002
• Results of Delphi to be presented at the Annual Research Review for the Center for Software Engineering on Monday March 11th, 2002— http://sunset.usc.edu/events/2002/arr/index.htm
12Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
COSYSMO Conclusion
• COSYSMO effort is moving forward and has significant momentum
• COSYSMO team needs systems engineering experts to make the Delphi data collection survey successful
• INCOSE MWG can help by:—Completing Delphi survey and returning
them by February 15th, 2002—Circulating this questionnaire to other known
‘experts’
(Focus on quality input, not volume of responses)
13Copyright © 2001, Software Productivity Consortium NFP, Inc.
COSYSMO Briefing
For More Information
• COSYSMO INCOSE MWG Points of Contact:— Chris Miller
– [email protected]– 703 742-7284
— Garry Roedler– [email protected]– 610 531-7845
• COSYSMO USC-CSE Points of Contact:— Barry Boehm [email protected]
— Ricardo Valerdi [email protected] — Don Reifer [email protected]
• COSYSMO website— http://valerdi.com/cosysmo/