The third part is about the characteristic of load and forecasting model . in this part , the characteristic of load in zhengzhou is studied as an example , and on the base one forecasting model for normal day based on ann by analysis the difference of weather situation and one forecasting model for special holiday based on fuzzy logic is bring forward 第三部分以郑州地区为代表，研究了该地区的负荷特性，并且在此基础上，提出了一种针对普通目的基于天气影响因素差异度的神经网络预测方法以及一种针对特殊节假日的基于模糊逻辑的负荷预测模型。
( 1 ) hsmbk , it uses the bisect partition principle and adopts a new method to count the comparability - - " binary feature sparse otherness " . we apply the thought of choosing excellent element to the method of calculating the center of clustering for reducing the effect of the isolated points . at last , we bring forward jw rule based on the enlighten idea ( 1 ) hsmbk算法，利用了对称划分原理；采用了一种新的计算相似性方法- -布尔特征稀疏差异度；将选优思想应用到聚簇中心的计算，形成一种新的中心计算方法，减少了孤立点的影响；采用启发式思想提出了jw准则，为k值的选择提供依据。
Finally , the article has put forward to seven standards of valuing the effectiveness of differential and taken quantitative analysis of it by using the analytic hierarchy process and introduced the idea of product characteristics and product differential in order to improve product difference and promote market competition of enterprise 文章还提出了评价差异化有效性的七个标准，并运用层次分析法、引入产品特征度和产品差异度的概念，对差异化的有效性进行定量分析，以作为企业改进产品差别、开展市场竞争的重要依据。
