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13 results on '"Ng, S. H."'

4. Releasable Micro-waveplates

Author

Grineviciute, L., primary, Tolenis, T., additional, Ryu, M., additional, Moein, T., additional, Ng, S.-H., additional, Katkus, T., additional, Maksimovic, Jovan, additional, Drazdys, R., additional, Morikawa, J., additional, and Juodkazis, S., additional

Published
2019
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13. Modeling and Analysis of Software Fault Detection and Correction Process by Considering Time Dependency.

Author

Wu, Y. P., Hu, Q. P., Xie, M., and Ng, S. H.

Subjects
RELIABILITY in engineering, FAULT tolerance (Engineering), COMPUTER software development, POISSON processes, PARAMETER estimation, HIGH technology
Abstract

Software reliability modeling & estimation plays a critical role in software development, particularly during the software testing stage. Although there are many research papers on this subject, few of them address the realistic time delays between fault detection and fault correction processes. This paper investigates an approach to incorporate the time dependencies between the fault detection, and fault correction processes, focusing on the parameter estimations of the combined model. Maximum likelihood estimates of combined models are derived from an explicit likelihood formula under various time delay assumptions. Various characteristics of the combined model, like the predictive capability, are also analyzed, and compared with the traditional least squares estimation method. Furthermore, we study a direct, useful application of the proposed model & estimation method to the classical optimal release time problem faced by software decision makers. The results illustrate the effect of time delay on the optimal release policy, and the overall software development cost. [ABSTRACT FROM AUTHOR]

Published
2007
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