考虑非齐次泊松过程(NHPP)类软件可靠性增长模型,引入以时间为变量的故障排除效率函数和故障发现率函数,建立了软件费用模型,使模型更具有一般性,更符合实际情况。以软件费用最小作为优化目标,讨论了最优释放时间与软件开发的最小费用,实例计算给出了测试时间随故障发现率中的参数的变化情况。
The NHPP software reliability growth model in which the fault removal efficiency and fault occurrence efficiency are functions of testing time is considered. Based on this model, a software cost model is proposed, and the optimal release time is obtained by minimizing the cost function. Finally, several conclusions in special circumstances and an example are given.