THE OPTIMAL TRANSFORMATION OF PREDICTOR AND WEIGHTED MODEL OF MULTI-REGRESSION

By discussing the relationship between predictor and predictand (i.e.yield) in yield prediction,the basic form of linear and nonlinear transformation of predictor was summed up.The calculation method of parameter in the form was given out,based on the principles of optimization method,and at the same time the optimal predictors were selected.In addtion,the weighted model of multiregression for yield prediction was established,based on the stage of plant.