THE NAVY CIPHER BOX MARK II

Recent suggestions in [8] that optimization techniques such as the genetic algorithm can be used to successfully solve knapsack ciphers are somewhat optimistic. The inability to assign an appropriate fitness to an arbitrary solution of the knapsack cipher is the downfall with this method. In this paper a detailed analysis of the proposed fitness function is undertaken and numerical results are presented displaying the futility of using this fitness function in a genetic algorithm for solving knapsack ciphers of any reasonable size.     

软件黑盒测试中SPR的规范化管理方法

在软件开发过程中,对所开发的软件进行测试,是保证软件质量必不可少的手段。黑盒测试方法是在无需了解软件内部逻辑结构的情况下,测试软件是否达到了预期要求。软件质量工程师要根据软件发生缺陷的外在现象提出软件问题报告(SPR),供软件开发工程师参考。本文着重讨论了软件黑盒测试中如何在软件开发工程师和软件质量工程师之间实现规范化信息交流的一种方法。