STOCHASTIC DIFFERENTIAL EQUATION MODELING BASED ON COMPONENT IMPORTANCE LEVELS AND OPTIMAL VERSION-UPGRADE PROBLEM FOR OSS

摘要

The current software development environment has been changing into new development, paradigms such as concurrent distributed development environment and so-called open source project by using network computing technologies. OSS (Open Source Software) which developed using by network environment is widely adopted as a embedded system and server usage because anyone can join the development. The source code is opened, and everyone can freely modify. On the other hand, the problem on the support less and the low quality is known as the large factor to disturb the spread of OSS. In this paper, we propose the estimation method of the component importance level based on stochastic differential equation. Also, we find the optimal version-upgrade time. Moreover, we show several numerical illustrations.