Research On Factor Evolution Of Software Estimation Model

The innovation of information technology requires high-tech modern equipment and a lot of command and control systems.The scale of software used in modern society is more complex and larger.With the continuous process of information technology,we encounter a similar problem how to estimate the effort and schedule of large-scale software effectively.But a single software cost estimation model couldn't offer a satisfied result.Finding the regular pattern in evolution of software cos-estimation model by studying COCOMO model,PRICE-S model,REVIC model,Sage model,SEER-SEM model and US Air Force model will be very helpful for cost control and schedule control.The important factor in the software effort estimation model is to estimate the selection of estimation factor and its value in different situations.Therefore,this paper presents a mathematical model to characterize relationship of the factors of estimation model.The factor evolution and analysis in software estimation models software is designed based on the Revision Control technology.Mainly studies is following as:1.Research on the evolution model factor and analyze on the estimation of model factors.Research on factor estimation model and summarize of the evolution of evolutionary characteristics estimation model factor are helpful to analyze the evolution features of estimation models.2.Based on the analysis on the evolution of estimation model factor,it raises the general mathematical model to characterize the factor estimation model.By analysis on the evolution of the COCOMO model factors,we summarize the law of evolution of estimation model factor and characterize the general mathematical model.3.By the Revision Control technology research,we propose a data structure to characterize and analyze evolution of estimation model factors,that evolution graph.4.The fifth chapter with the US Air Force model for test cases to characterize the evolution of the estimation model factor for validation.