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针对传统组合模型建模准则单一、权值固定不变的缺陷,引用最优加权组合建模理论,将向量夹角余弦与诱导有序几何加权平均(IOWGA)算子相结合,构建一种新的最优组合预测模型,并对优性组合模型的判定方法及预测效果评价准则进行了研究。利用该模型对路基沉降进行预测,并与双曲线模型、S型曲线模型的预测结果进行对比分析。结果表明,相对于单项模型,该组合模型的预测精度更高,是一种有效的路基沉降预测模型。
Aiming at the defect that the traditional composite model has a single modeling rule and a fixed weight, the optimal weighted combination modeling theory is used to combine the vector cosine of cosine with the induced ordered geometric weighted average (IOWGA) operator to construct a new The optimal combination forecasting model and the method of judging the optimal combination model and the evaluation criterion of forecasting effect were studied. The subgrade settlement is predicted by this model, and compared with the predicted results of hyperbolic model and S-curve model. The results show that compared with the single model, the combined model has higher prediction accuracy and is an effective subsidence prediction model.