Application of Stepwise Regression-PLS Model to Dam Displacement Monitoring

It is difficult for the traditional statistical model to select variable in analysis of dam displacement monitoring data.Taking the Chencun gravity arch dam for an example,based on the partial least-squares method,this article applies the stepwise regression method to filter variables and establishes a stepwise regression PLS model for dam displacement monitoring.A project example shows that this method reduces the number of independent variables effectively,and it makes the model simple and improves the linear significance and precision of the regression method.