Prominent among the various techniques that can help to extrapolate past date into future trends are the following:time series, leastsquares method, exponential smoothing, regression and correlation.
And the weighted leastsquares method is presented for gaining more accurate results of correlation dimensions.
在数据后处理方面,本文提出了加权最小二乘法,使维数计算更精确,更适合实际。
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The results show that increasing the number of leastsquares fitting terms and reasonable selection of digital image correlation subset size improve the accuracy of calculated stress intensity factor.