ar_mean | R Documentation |
Computes the long term mean of an AR process
ar_mean(object, ...)
## S3 method for class 'linear'
ar_mean(object, ...)
## S3 method for class 'setar'
ar_mean(object, ...)
## S3 method for class 'lstar'
ar_mean(object, ...)
object |
an object of class |
... |
unused argument |
The function computes the long-term mean of an AR(p) process, or of the corresponding sub-regimes in SETAR or LSTAR model. There are three possible cases:
The LT mean is 0
The LT mean is given by const/(1-sum(AR coefs))
The LT mean is not defined
## estimate a (linear) AR, a SETAR and a LSTAR
lin_cst_l1 <- linear(lh, m = 1, include = "const")
set_cst_l1 <- setar(lh, m = 1, include = "const")
lst_cst_l1 <- lstar(lh, m = 1, include = "const", trace = FALSE)
ar_mean(lin_cst_l1)
ar_mean(set_cst_l1)
ar_mean(lst_cst_l1)
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