协方差函数的待定参数对最小二乘拟合推估精度的影响

摘要

The key problem of least squares collocation(LSC) is to ascertain experience covariance function. The authors analyzed the influence of the parameter on the result and accuracy, and gave a example. On the basis of analysis and practice, a new proposal for determining the parameter is put forward.%最小二乘拟合推估法的关键是要确定经验协方差函数，本文分析了协方差函数的待定参数对推估结果及其精度的影响，在此基础上经过实际计算，对协方差函数的待定参数的确定提出了自己的看法。