A Comparative Study on the Cost and Release Time of Software Development Model Based on Lindley-Type Distribution
Tae-Jin Yang · International Journal of Engineering Research and Technology · 2020
In this study, the software development cost model with Lindley-Type (Basic-Lindley and Modified-Lindley) distribution property 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 of comparing Lindley-Type models, we confirmed that the Modified-Lindley model is more efficient because it has lower software development costs and faster software release time than the Basic-Lindley model.Also, it was confirmed that the Goel-Okumoto basic model is relatively efficient than the Lindley-Type model.Through this study, we newly analyzed the attributes of the Lindley-Type software development cost model 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 attributes of economical software development cost and optimal release time.