用折扣最小二乘法建立线性自回归模型预测粮食产量

Establishment of Linear Regression Model by Cut-price Least Square Method for Grain Yield Forecast

依据折扣最小二乘准则,对时间序列资料建立线性自回归预测模型,给出了参数的估计公式,数值结果表明该方法更行之有效。

Based on the cut-price least quadratic rule,the autoregressive forcast models for time sequence,and propose the formulations of its paramter were established. The numerical results showed that the new method was more efficient than the least quadratic method.