Order Decision by Difference Method for Least Square in Trend Fitting

Yu Hua Dong; Xin Ming Zhou

doi:10.4028/www.scientific.net/AMM.160.373

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 160Order Decision by Difference Method for Least...

Order Decision by Difference Method for Least Square in Trend Fitting

Abstract:

A difference method to order decision for least square in trend fitting is proposed in this paper. When the least square is used for fitting trend, choosing the proper order is important for trend fitting accuracy. We can use difference n times to obtain difference result data, and the mean value can be taken as decision criteria. Comparing with the threshold value, when the mth difference result mean is smaller, the trend fitting order for least square can be set to m. Simulation processing results show that this method resolve the problem of order decision for least square in trend fitting, and the method has high accuracy for trend extraction.

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Periodical:

Applied Mechanics and Materials (Volume 160)

Pages:

373-376

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.160.373

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Online since:

March 2012

Authors:

Yu Hua Dong, Xin Ming Zhou

Keywords:

Difference, Least Square (LS), Order Decision, Trend Fitting

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