Accession Number : ADA275989


Title :   Software Cost Estimating Models: A Comparative Study of What the Models Estimate


Descriptive Note : Master's thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF LOGISTICS AND ACQUISITION MANAGEMENT


Personal Author(s) : Coggins, George A. ; Russell, Roy C.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA275989


Report Date : SEP 1993


Pagination or Media Count : 173


Abstract : This effort developed a consolidated document which highlights and examines differences in definitions, assumptions, and methodologies used by the REVIC, SASET, PRICES, and SEER-SEM cost models. The following research questions were investigated: (1) What differences exist between the cost models? (2) How do these differences impact the resulting estimates? (3) To what degree can we explain and adjust for known differences between the cost models? Seven specific areas were addressed: (1) software development phases, (2) development activities and cost elements, (3) source lines of code and language differences, (4) key model attributes and key cost drivers, (5) implications of Project size on model output, (6) impact of schedule compression and extensions, and (7) distinctive characteristics of the model data bases. A hypothetical baseline test case was developed to determine if users could explain and adjust for known differences. It is the researchers' opinion that the underlying equations and model assumptions are so dissimilar that objective normalization efforts are virtually impossible for the average model user. Cost Estimates, Cost Models, Software (Computers), Comparison, Models


Descriptors :   *COMPUTER PROGRAMS , *COST ESTIMATES , *COST MODELS , TEST AND EVALUATION , COMPRESSION , DATA BASES , OUTPUT , COMPUTERS , COMPARISON , THESES , PHASE , ESTIMATES , COSTS , DOCUMENTS , EQUATIONS.


Subject Categories : ECONOMICS AND COST ANALYSIS
      COMPUTER PROGRAMMING AND SOFTWARE


Distribution Statement : APPROVED FOR PUBLIC RELEASE