test.change.point {changepointTests} | R Documentation |
Function to perform changepoint tests with multiplier bootstrap using the usual sequential process
Description
This function compute the Cramer-von Mises and Kolmogorov-Smirnov test statistics based on the new sequential process of Bucher et al (2014), using multipliers and parallel computing.
Usage
test.change.point(
x,
N = 1000,
n_cores = 2,
boot.method = "multipliers",
est = FALSE
)
Arguments
x |
(n x d) matrix of data (observations or pseudo-observations, including residuals), d>=1 |
N |
number of multipliers samples to compute the P-value |
n_cores |
number of cores for parallel computing (default = 2) |
boot.method |
bootstrapping method: 'multipliers' (default, fastest) or 'bootstrap' |
est |
if TRUE, tau is estimated (default = FALSE) |
Value
CVM |
Cramer-von Mises statistic |
KS |
Kolmogorov-Smirnov statistic |
pvalueCVM |
Pvalue for the Cramer-von Mises statistic |
pvalueKS |
Pvalue for theKolmogorov-Smirnov statistic |
tauCVM |
Estimated changepoint using the Cramer-von Mises statistic |
tauKS |
Estimated changepoint using the Kolmogorov-Smirnov statistic |
Author(s)
Bouchra R Nasri and Bruno N Remillard, August 6, 2020
References
Nasri, B. R. Remillard, B., & Bahraoui, T. (2022). Change-point problems for multivariate time series using pseudo-observations, J. Multivariate Anal., 187, 104857.
Examples
x=matrix(rnorm(600),ncol=3)
out = test.change.point(x)