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中文摘要：
随着市场经济的逐步成熟,企业间的相互关系发生了很大变化。在理论界已有的强/弱关系研究基础上,提出了企业强/弱势关系网的概念,并探讨了企业由强势关系网到弱势关系网的变迁问题。基于复杂网络方法,分别建立强/弱关系网的演化模型,并进行了仿真分析,结果表明,企业强势关系网既有小世界网络中平均距离较小,又有其节点的度分布接近幂律分布的特征,与实际网络特征相吻合;企业弱势关系网模型在现有加权网络演化模型的基础上加入了节点退出机制,具有较小的聚类系数,度分布表现出明显的无标度特征,且节点的度和点强度呈正相关性,反应了实际网络的特征。
英文摘要：
The relationship among firms had greatly changed with the maturing of market-oriented economy.Based on the existing strong/weak tie theories,this thesis proposes the concept of business strong/weak tie network and explores the transformation process from the strong tie network to the weak one.The strong/weak tie network evolution models based on complex network method are built and the analytical simulations are done.The experimental results indicate that the business strong tie network has small average path length which is one character of small world network and approximately power-law degree distribution,which agrees with the empirical investigation data.On the other hand,on the basis of the weighted network evolution model,the business weak tie network combined with exit mechanism,yields small clustering coefficient and an obvious scale-free behavior for the degree distribution.The node degrees are positively correlated to its strength,reflecting the network character of weak tie network.
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