人们的记忆并不可靠，而新的成员或访客也不总是知道过去发生了什么，网络软件中内置进的信誉系统，可以跟踪人们的行为，以及社区是如何判别这种行为的。

Since human memory is fallible, and of course, new members or visitors don't always know the history, reputation systems are built into web software to track behavior and how the community judges it.

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文中研究了不连续系统的强实用稳定性，获得了一些简明的判别准则；

Strong practical stability of discontinuous dynamic systems is studied in this paper.

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