摘要
预测建筑物沉降的方法有多种,高精度预测才是关键。本文在利用灰色模型和泊松曲线模型进行预测结果的基础上,利用最小二乘法原理,建立加权组合预测模型与变权组合预测模型,求得相应规划模型的权系数,通过对预测结果进行分析比较,认为组合预测模型能提高预测的精度。
There are large numbers of methods for forecasting the settlement of construction,but the major propose is to improve the precision of observation.This paper,on the basis of forecast results from gray model and Poisson curve model,established the add-weight combination forecasting model and vary-weight combination forecasting model using the least squares,and calculated the weight coefficient of correspondent layout model.The combination model can advance the precision of forecast by comparing the forecasting results.
出处
《测绘与空间地理信息》
2011年第4期202-204,共3页
Geomatics & Spatial Information Technology
关键词
组合预测模型
最小二乘法
权重
预测
combination forecasting model
least squares
weight
forecast
