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针对输变电工程造价预测中影响因素相关性较大的特点,采用因子分析提取揭示数据特征的主因子,即设备材料、场地建设、施工方法、地质条件四个因子并检验了其正确性。建立REGR-WNN模型对输变电工程造价水平进行预测,并进行实证研究,通过与REGR及WNN两种模型单独预测分析对比,结果表明该方法能提供更准确的造价预测,为输变电工程造价管控提供决策参考,对类似多样本、多影响因素、信息冗余的数据预测同样具有借鉴意义。
According to the large correlation between influential factors in the forecast of transmission and distribution project cost, factor analysis is used to extract the main factors that reveal the characteristics of data, namely equipment materials, site construction, construction methods and geological conditions, and verify its correctness. The REGR-WNN model is established to predict the level of transmission and distribution project cost, and an empirical study is conducted. By comparing with REGR and WNN models alone, the results show that this method can provide more accurate cost forecast, Cost control provides a reference for decision making. It is also of reference significance for data prediction of similar multiple samples, multiple influential factors and information redundancy.