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Contains functions that can determine whether a time series is secondorder stationary or not (and hence evidence for locally stationarity). Given two nonstationary series (i.e. locally stationary series) this package can then discover timevarying linear combinations that are secondorder stationary.
Package details 


Author  Guy Nason [aut, cre], Alessandro Cardinali [aut, ctb] 
Maintainer  Guy Nason <[email protected]> 
License  GPL (>= 2) 
Version  2.4 
Package repository  View on CRAN 
Installation 
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