A COMPARATIVE STUDY ON THE COST ANALYSIS OF SOFTWARE DEVELOPMENT MODEL BASED ON RAYLEIGH-TYPE LIFETIME DISTRIBUTION

In this study, the software development cost model of the Rayleigh-type (inverse Rayleigh and Rayleigh) lifetime distribution was compared with the Goel-Okumoto basic model, and the attributes of software development cost and optimal release time were newly analyzed. For this purpose, software failure time data were used, parameter estimation was applied to the maximum likelihood estimation method, and nonlinear equations were calculated using the bisection method. As a result, we confirmed that the Rayleigh model is efficient because it has lower software development costs and faster software release time than the inverse Rayleigh model. Also, it was confirmed that the Rayleigh model is the most efficient among the proposed model. Through this study, we newly analyzed the software development cost and release time of the inverse Rayleigh and Rayleigh distribution which has no previous study case. Also, it is expected that software developers will be able to use this study data as a basic guideline for exploring the property of economical software development cost and optimal release time