基于基因表达式编程的公路工程造价预测模型

基因表达式编程作为新型的人工智能数学建模方法,具有较强的函数发现能力和较高的搜索效率．针对公路工程造价预测特点和已有预测模型的不足，求解基于GEP的公路工程造价预测模型．根据工程造价的组成原理筛选确定11个公路工程特征因素，用15组公路工程数据作训练样本和验证样本，在设定好GEP算法的构成要素的前提下，使用Visual Basic语言表达GEP算法，求解公路工程造价预测模型．通过敏感性分析模型的可行性，用比较图和4个统计指标值对模型进行评价．结果表明，预测模型所得结果与工程实践相吻合，且预测值与实际值的相对误差≤5.9%，满足预测精度≤10%的要求，预测精度高，该模型具有较好的应用价值．

A Gene Expression Programming Algorithm for Highway Construction Cost Prediction Problems

The gene expression programming as the new artificially intelligent and mathematic modelling method has strong function discovery ability and high search efficiency.In view of characteristic of the highway construction cost forecasting and insufficiency of the existing forecasting model,highway construction cost forecasting model is constructed based on the GEP.Then,11 highway engineering characteristic factors is determined according to the composition of building cost of projects.15 groups of highway engi...