基于PSO-RF的建筑安全文明施工费费率预测Prediction of fee rate for safe and civilized constructioncost based on PSO-RF
张舒;代涵;史秀志;邱引桂;
摘要(Abstract):
合理的安全文明施工费计取费率是保障建筑安全生产水平的重要因素。为确定更加科学的计取费率,首先在充分调研费率影响因素的基础上,选取工程造价、建筑面积、建筑层数等7个因素建立了费率预测指标体系;其次对原始数据进行归一化处理,并随机划分训练集与测试集;然后利用粒子群算法PSO对随机森林RF的参数进行寻优,建立PSO-RF预测模型,并利用训练集对模型进行训练;同时利用测试集对模型进行算例仿真,并与其他4种预测模型进行对比;再利用10组实例数据对模型预测可靠性进行检验;最后利用Shapley值法对模型中7个指标的影响度进行排序。结果表明:相较于其他4种模型,PSO-RF模型具有更高的预测精度;各指标的影响度从大到小依次为工程地点、工程造价、建筑面积、施工工期、单方造价、建筑檐高、建筑层数。
关键词(KeyWords): 安全社会工程;建筑安全文明施工费;费率预测;PSO-RF模型;Shapley值
基金项目(Foundation):
作者(Authors): 张舒;代涵;史秀志;邱引桂;
DOI: 10.13637/j.issn.1009-6094.2020.1587
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