Several software reliability growth models have been presented in the literature in the last three decades. They have been developed for uniform and non-uniform operational profile. Some of them are flexible whereas others are not. Model selection becomes an uphill task. Of late, some authors have tried to develop a unifying approach so as to capture different growth curves, thus easing the mod...

1 Department of Operational Research, University of Delhi, Delhi 110007, India 2 S.S. College of Business Studies, University of Delhi, Delhi 110095, India 3 Department of Social Management Engineering, Graduate School of Engineering, Tottori University, 4-101, Minnami, Koyama, Tottori 680-8552, Japan 4 Department of Industrial and System Engineering, University of Pretoria, Pretoria 0002, Sout...

Here we investigate the underlying basis connecting the the software reliability growth models to the software testing and debugging process. This is important for several reasons. First, if the parameters have an interpretation, then they constitute a metric for the software test process and the software under test. Secondly, it may be possible to estimate the parameters even before testing be...

Software reliability and/or safety [1] have become an important issue for instrumentation and control systems in nuclear power plants (NPPs). Software is one of the important safety issues in digital system safety assessment [2]. When using safety-critical software, various methods like formal verification and validation [3,4] play critical roles in demonstrating compliance with several regulat...

Unreliability of any product comes due to the failures or presence of faults in the system. As software does not “wear-out” or “age”, as a mechanical or an electronic system does, the unreliability of software is primarily due to bugs or design faults in the software. Reliability is a probabilistic measure that assumes that the occurrence of failure of software is a random phenomenon. Randomnes...

Existing time-domain models for software reliability often result in an overestimation of such reliability because they do not take the nature of testing techniques into account. Since every testing technique has a limit to its ability to reveal faults in a given system , as a technique approaches its saturation region fewer faults are discovered and reliability growth phenomena are predicted f...

Component-based software development approach has become a trend in integrating modern software systems. To ensure the overall reliability of an integrated software system, its software components have to meet certain reliability requirements, subject to some testing schedule and resource constraints. Efficiency improvement of the system-testing can be formulated as a combinatorial optimization...

In this paper, we study the optimal software release problem considering cost, reliability and testing eficiency. We first propose a generalized logistic testing-effort function that can be used to describe the actual consumption of resources during the sojiware development process. We then address the problem of how to decide when to stop testing and when to release software for use. In addres...

The traditional approach of reliability prediction using software reliability growth models requires a large number offailures which might not be available at the beginning of the testing. The commonly used maximum likelihood estimates may not even exist or converge to a reasonable value. In this paper, an approach of making use of information ji-om similar projects in order to obtain an early ...