关键词: 蚁群算法, 软件可靠性模型, 参数估计

Abstract: It is difficult to estimate the parameters of software reliability models, since most of them are non-linear models. The most widely used methods for parameters estimating of software reliability models have been summarized, and a new approach based on ant colony algorithm was proposed. The experiments with three typical models, G-O model, Weibull model and M-O model, show that this algorithm demonstrates good applicability. And the results demonstrate that the proposed method has solved the nonconvergent problem that resulted from traditional methods. Compared with Particle Swarm Optimization (PSO), the method given in this paper shows up to two times faster convergence rate, and for some subjects, the new method shows ten times higher precision.

Key words: ant colony algorithm, software reliability models, parameters estimating