Software Systems Cost Estimation Vishesh Joshi 4/27/2011 Individual Research Presentation

Cost of a Software Product COST OF DEVELOPMENT OF NEW MODULES + COST OF COTS PRODUCT INTEGRATION 4/27/2011 Individual Research Presentation

Cost of a Software Product Model Description: The COCOTS Extension of COCOMO II Chris Abts, Ph.D. USC Center for Software Engineering and Texas A&M University 4/27/2011 Individual Research Presentation

Cost of a Software Product COST OF DEVELOPMENT(COCOMO) + COST OF COTS PRODUCT INTEGRATION 4/27/2011 Individual Research Presentation

COST OF DEVELOPMENT(COCOMO) Scale Drivers: Precedentedness (PREC) Development Flexibility(FLEX) Architecture/Risk Resolution(RESL) Team Cohesion(TEAM) Process Maturity(PMAT) 4/27/2011 Individual Research Presentation

COST OF DEVELOPMENT(COCOMO) contd.. COST Factors Product Factors Reliability (RELY) Data (DATA) Complexity (CPLX) Reusability (RUSE) Documentation (DOCU) Platform Factors Time constraint (TIME) Storage constraint (STOR) Platform volatility (PVOL) Personnel factors Analyst capability (ACAP) Program capability (PCAP) Applications experience (APEX) Platform experience (PLEX) Language and tool experience (LTEX) Personnel continuity (PCON) Project Factors Software tools (TOOL) Multisite development (SITE) Required schedule (SCED) 4/27/2011 Individual Research Presentation

Cost of a Software Product COST OF DEVELOPMENT(COCOMO) + COST OF COTS PRODUCT INTEGRATION 4/27/2011 Individual Research Presentation

COST OF COTS PRODUCT INTEGRATION Tool and Model used for estimation of COTS integration into a software system: COCOTS 4/27/2011 Individual Research Presentation

Individual Research Presentation COCOTS It has 3 submodels: Assessment Tailoring Glue Code 4/27/2011 Individual Research Presentation

Cost of a Software Product Model Description: The COCOTS Extension of COCOMO II Chris Abts, Ph.D. USC Center for Software Engineering and Texas A&M University 4/27/2011 Individual Research Presentation

Individual Research Presentation COCOTS Assessment: Assessment Submodel of COCOTS basically estimates the effors required in assessing the various COTS products for the system. Effort Equation: EffortA = IFE + DAE IFE : Initial Filtering Effort DAE: Detailed Assessment Effort 4/27/2011 Individual Research Presentation

Individual Research Presentation COCOTS Assessment (contd.) 4/27/2011 Individual Research Presentation

Individual Research Presentation COCOTS Tailoring: Some COTS can be used as is. Some others require tweeking. The Tailoring Submodel of COCOTS gives us the effort for the changes to the original product required for fitting into the requirement of the software. 4/27/2011 Individual Research Presentation

Individual Research Presentation COCOTS Tailoring: 4/27/2011 Individual Research Presentation

Individual Research Presentation COCOTS Glue Code: The COTS products to be integrated into the system need some glue code wrappers because at times the output would not be in a form that might be required by the system, or for any other such reason The Glue Code submodel provides the effort required for creating this glue code. 4/27/2011 Individual Research Presentation

Individual Research Presentation COCOTS Glue Code: 4/27/2011 Individual Research Presentation

Individual Research Presentation COCOTS Glue Code: 4/27/2011 Individual Research Presentation

Cost of a Software Product COST OF DEVELOPMENT(COCOMO) + COST OF COTS PRODUCT INTEGRATION(COCOTS) 4/27/2011 Individual Research Presentation

Cost of Software Product (USC Current Developments) Currently CSSE is working on GUI tools in place of the current MS Excel Spreadsheet tools for both COSYSMO and COCOTS. Both of these tools will be integrated into one tool COINCOMO for effort estimation of a System of Systems. 4/27/2011 Individual Research Presentation

Individual Research Presentation 4/27/2011 Individual Research Presentation

Individual Research Presentation 4/27/2011 Individual Research Presentation

Individual Research Presentation 4/27/2011 Individual Research Presentation

Cost Estimation tool for System Of Systems (COSYSMO) based on COCOMO Subsystem1 Subsystem2 … Comp1 Comp2 Comp3 Comp4 Subcomponent1 Subcomponent2 … .. . 4/27/2011 Individual Research Presentation

Individual Research Presentation NDI Survey Points 3 of the 8 teams said that their projects depends extensively on the COTS products. The following is the number of COTS that each team used: Team Number Number of COTS 1 9 2 10 3 4 6 5 7 8 18 4/27/2011 Individual Research Presentation

Individual Research Presentation Significance for 577 CSCI 577 projects are small and do not come into the category for System of Systems. Argument: COINCOMO tool not applicable to CSCI 577. 4/27/2011 Individual Research Presentation

Individual Research Presentation Significance for 577 4/27/2011 Individual Research Presentation

Individual Research Presentation References Model Description:The COCOTS Extension of COCOMO II as of October 2002 Chris Abts, Ph.D. USC Center for Software Engineering and Texas A&M University COTS/NDI Software Integration Cost Estimation & USC-CSE COTS Integration Cost Calculator V2.0 User Guide Revision 1.0 30 September 1997 Christopher M. Abts Barry W. Boehm 8QLYHUVLW\RI6RXWKHUQ&DOLIRUQLD Center for Software Engineering http://csse.usc.edu/csse/research/projects.html http://sunset.usc.edu/csse/research/COCOTS/index.html http://csse.usc.edu/csse/research/COPLIMO/ http://csse.usc.edu/csse/research/COPROMO/ http://csse.usc.edu/csse/research/COQUALMO/ http://csse.usc.edu/csse/research/COSYSMO/ 4/27/2011 Individual Research Presentation

Individual Research Presentation Questions???? 4/27/2011 Individual Research Presentation