Previous research work is mainly about unweighted network, and there are few research work on weighted network.

以往的研究工作主要是围绕无权网络展开，有关加权网络的研究工作较少。

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In chapter 3, based on local world (LW) model, the model evolves network from unweighted to weighted with local information is proposed.

第三章在局部世界(LW)模型的基础上，提出了基于局部信息的从无权到加权网络的演化模型。

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