The cross-lag correlation method has gained increased use in recent years as a technique which can be used to evaluate causality in longitudinal behavioral research. However, the effect of selecting an incorrect time-lag has remained largely unexplored. This research reports the results of a ...
对于两个(x和y)随机过程而言,交叉相关性(cross-correlation)这个概念表示的这两个随机过程的相似程度;delta_xy(t') = E[x(t)y(t-t')]。 在某个时间差t‘=T 的时候,发现delta_xy 出现极大值的时候,说明x(t) 和 y(t-T) 的相似性很高。 赞(1) 回复 moody 楼主 2020-09-16 06:24:06 楼上...
看了一篇论文,讲的是地下水和地表水时滞互相关(time lag cross correlation),看网上的解释还是很困惑...
To account for the distortion of the signal during its propagation between the two points an optimum time lag can be estimated by the analysis of the cross-correlation of the two time series. This study clarifies the relation between the transit time estimated by the time lag method and the ...
We find a 40 % lower RMSE for the lag-1 autocorrelation function (ACF) for the Gaussian kernel method vs. the linear interpolation scheme,in the analysis of highly irregular time series. For the cross correlation function (CCF) the RMSE is then lower by 60 %. The application of the Lomb...
Function 'ccf' computes the cross-correlation or cross-covariance of two univariate series (stats) diff.ts(): returns suitably lagged and iterated differences (stats) lag(): computes a lagged version of a time series, shifting the time base back by a given number of observations (stats) Few...
Time delay estimadon of the system in discrete time processing system include cross-correlator that the first signal and the second signal are carried out, providing a kind of cross-correlation indicates its output signal. Lag smoother receives cross-correlation output signal, and provides the output...
Colony candidate selection by differential analysis When a new frame was acquired at timet, it was cross-registered to the previous frame at timet − 1 and then digitally back-propagated to the sample plane44,45to obtain the complex light field ...
Using the instantaneous traveltime, which is able to unwrap the phase of the signal, instead of the cross-correlation lag, we derive new finite-frequency traveltime sensitivity kernels. The kernel reflects more the model-data dependency, we typically encounter in full waveform inversion. This ...
23-10-12 Lag-Llama Arxiv 2023 Lag-Llama: Towards Foundation Models for Time Series Forecasting Lag-Llama 23-10-15 UniTime WWW 2024 UniTime: A Language-Empowered Unified Model for Cross-Domain Time Series Forecasting UniTime 23-11-03 ForecastPFN NIPS 2023 ForecastPFN: Synthetically-Trained Zero...