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autocorrelation function |
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autocorrelation function [¦ȯd·ō‚kär·ə′lā·shən ‚fuŋk·shən] (mathematics) For a specified functionf(t), the average value of the productf(t)f(t- τ), where τ is a time-delay parameter; more precisely, the limit asTapproaches infinity of 1/(2T) times the integral from -TtoTofF(t)f(t- τ)dt. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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We used the partial autocorrelation function (25) to investigate the presence of residual autocorrelation, i. trends in the mean and variance) and the order of both the seasonal and non-seasonal autoregressive and moving-average indicators by using an autocorrelation function and a partial autocorrelation function (Hipel et al. Fast Fourier transform (FFT) and autocorrelation functions were used to find the dominating wavelength of the sheet, but more than one wavelength may be significant. |
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