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在离散系统的模拟语言中,GPSS是广为流传的一种。虽然GPSS易于掌握,但要使模拟结果具有一定的准确性,还必须注意以下几个方面:(1)模拟量的灵敏度;(2)随机数的选择;(3)获得样本的方法。本文通过最简单的话务模拟,将模拟结果与公认是正确的爱兰公式相比较,对上述几个方面进行了一些讨论。这些试验是用GPSS语言进行的,但讨论的结果对用其它语言进行的模拟也是适用的。
Among discrete languages, GPSS is one of the most popular. Although GPSS is easy to grasp, it is necessary to pay attention to the following aspects in order to make the simulation result have certain accuracy: (1) the sensitivity of analog; (2) the choice of random number; (3) the method of obtaining samples. In this paper, the simplest traffic simulation is used to compare the simulation results with the well-known Allen formula, and some discussions are made on the above aspects. These tests were conducted in the GPSS language, but the results of the discussion also apply to simulations in other languages.