摘要
本文以加权最小二乘法为基础,提出了逐步加权最小二乘法(Step-by-step Weighted Least Squares Method)。用逐步加权最小二乘法对铂铑_(10)。-铂热电(?)进行多项式拟合时,误差比用普通最小二乘法得到的多项式要小一倍以上,文中给出了用SWLS方法拟合的铂铑_(10)。铂热电(?)多项式公式。
Based on the weighted least square method, this paper proposes a step-by-step weighted least spuare method (SWLS method). Fitting polynomial to a platinum 10% rhodium versus platinum thermocouple, the crror is much less in SWLS method than in LS method. The fitted polynomial formulas to Platinum 1.0% rhodium versus platinum thermocouple in SWLS method is also given.
关键词
最小二乘法
曲线拟合
热电偶
least squares methods
curve fitting
errors
