说明：  计算多重分形非趋势波动分析，采用加权网络中节点强度和权重都是幂率分布的模型，是学习PCA特征提取的很好的学习资料。
( Calculate the multifractal trend fluctuation analysis, Using weighted model nodes in the network strength and weight are power law distribution, Is a good learning materials to learn PCA feature extraction.)