在复杂网络分析中，通常采用随机网络模型。
The random network model is widely used in analysis of the complex network.
建立一个工期和费用估计的随机网络模型，说明应用蒙特卡洛模拟进行工期和费用风险分析的原理及方法。
A stochastic network model is built by use of the theory and method of Monte Carlo Simulation, with a view to analyzing the risk of the time limit for project and its cost.
第二部分，为进一步探讨无标度网络的形成机制，我们研究加点、加边、重连和去边四种演化过程的随机网络模型。
In the second part, in order to explore further the mechanism responsible for scale-freenetworks, we introduce two extended models of the Barabási ?Albert model.
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