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This paper considers the statistical approach to model software degradation process from time series data of system attributes. We first develop the continuous-time Markov chain (CTMC) model to represent the degradation level of system. By combining the CTMC with system attributes distributions, a continuous-time hidden Markov model (CT-HMM) is proposed as the basic model to represent the degradation...
The topic of this paper is about prediction of performance anomalies caused by software aging. We have developed a framework for detection of performance anomalies that is targeted to web and component-based applications. In this study, we selected some amount of historical data previously collected and we conducted a correlation analysis with this data. The resulting dataset was then submitted to...
In order to study the performance decline of application servers, this paper designs the customer requesting procedures and server monitoring programs for multi-scenes, which records five types of parameters, and the dimensionality reduction is implemented by using the Principal Component Analysis (PCA) firstly, then the multidimensional time series analysis model for the key performance indexes of...
Requirements Engineering is a key activity in the development of software systems and is concerned with the identification of the goals of stakeholders and their elaboration into precise statements of desired services and behavior. Study shows that majority of the software development projects fail because of lack of understanding the requirements clearly and non-involvement of key stakeholders. For...
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