So it is more feasible to simplify SPN model on the basis of performance equivalence before analyzing it.

因此，在对模型进行分析之前，先对其进行适当的性能等价化简，是一种更为可行的分析方法。

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Practice shows that the SPN can be made model and quantitative analysis for a stochastic process system, and it is a very useful tool in the enhaced BPN.

实践表明，SPN能为具有随机过程的系统进行建模和定量分析，是扩展的BPN中一种十分有用的分析工具．。

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The paper gives a verification of the soundness and performance analysis of this Web services composition model based on SPN-NET.

文中给出了基于SPN - NET模型的服务组合合理性验证和性能分析方法。

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