基于向量夹角余弦及IOWGA算子的组合预测方法及应用  

Combination Forecast Method and Its Application Based on Vector Angle Consine and IOWGA Operator

作　　者：王英林[1] 葛文[1] 何文峰[1] 陈锦林 

机构地区：[1]宁波市测绘设计研究院,浙江宁波315402

出　　处：《勘察科学技术》2017年第5期55-59,共5页Site Investigation Science and Technology

摘　　要：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。In view of the defects of traditional combination model such as single modeling criterion and fixed weight, the optimal weighted combination modeling theory is quoted. The vector angle cosine is combined with the induced ordered geometric weighted averaging （IOWGA） operator, a new optimal combination forecasting model is built. The decision method and the evaluation criterion of the prediction effect of the superior combination model are the results are compared with that by compared with the single model, the studied. The model is used to predict the subgrade settlement, and the hyperbolic model and the S curve model. The results show that, combined model is more accurate, and it is an effective prediction model for subgrade settlement.

关 键 词：向量夹角余弦 IOWGA算子 组合模型 沉降预测 

分 类 号：O177[理学—数学] U416.1[理学—基础数学]