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An interpolatory view of polynomial least squares approximation
Journal of Approximation Theory ( IF 0.9 ) Pub Date : 2019-12-23 , DOI: 10.1016/j.jat.2019.105360 Qingjun Chang , Chongyang Deng , Michael S. Floater
中文翻译:
多项式最小二乘逼近的插值视图
更新日期:2019-12-23
Journal of Approximation Theory ( IF 0.9 ) Pub Date : 2019-12-23 , DOI: 10.1016/j.jat.2019.105360 Qingjun Chang , Chongyang Deng , Michael S. Floater
We derive a formula for weighted polynomial least squares approximation which expresses the approximant as a convex combination of interpolants. There is a similar formula for approximation and the same principle applies to multivariate approximation.
中文翻译:
多项式最小二乘逼近的插值视图
我们导出了加权多项式最小二乘逼近的公式,该公式将逼近表示为插值的凸组合。有一个类似的公式 近似和相同原理适用于多元近似。