基于果蝇算法优化小波神经网络的输电工程造价预测

2017-12-01 22:30周景宏张文文
价值工程 2017年36期
关键词:工程造价

周景宏++张文文

摘要: 为了准确控制输电工程造价水平,提出一种基于果蝇算法优化小波神经网络的混合预测模型。首先,对输电工程造价影响因素进行归一化处理,并将归一化结果作为输入变量;其次,利用果蝇算法对小波神经网络参数进行优化,在此基础上,利用优化后的小波神经网络模型预测输电工程造价;最后,将本文的预测结果和其他方法进行对比。算例结果表明,该混合模型的预测效果更理性,精度更高。

Abstract: In order to accurately control the transmission project cost, a hybrid prediction model based on the wavelet neural network optimized by the fruit fly algorithm is proposed. Firstly, the influencing factors of transmission project cost are normalized, and the normalized result is taken as input variable. Secondly, the parameters of wavelet neural network are optimized by using the fruit fly algorithm. On this basis, the optimized wavelet neural network model is used to predict the construction cost of transmission project. Finally, the forecast result of this article is compared with other methods. The results of the example show that the hybrid model is more rational and more accurate.

關键词: 输电工程;果蝇算法;小波神经网络;工程造价

Key words: transmission project;fruit fly algorithm;wavelet neural network;project cost

中图分类号:TM7;TU723.3 文献标识码:A 文章编号:1006-4311(2017)36-0214-02

3 结论

在输电工程造价的预测研究中,由于影响因素较为复杂,从而使得准确的工程造价预测比较困难。本文利用果蝇优化的小波神经网络模型进行预测,结果显示:静态投资工程造价的相对误差绝对值的最大值是6.55%,最小值是5.12%,预测精度较高,符合相关误差要求(±10%)。

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