form_boldA
creates the "bold A" (companien form) coefficient matrices related to
VAR processes.
form_boldA(p, M, d, all_A)
Returns 3D array containing the \((dp \times dp)\) "bold A" matrices related to each component VAR-process.
The matrix \(A_{m}\) can be obtained by choosing [, , m]
.
the autoregressive order of the model
the number of regimes
the number of time series in the system, i.e., the dimension
4D array containing all coefficient matrices \(A_{m,i}\), obtained from pick_allA
.
No argument checks!
The "bold A" (companion form) matrix is given, for instance, in Lütkepohl (2005, p. 15).
Lütkepohl H. 2005. New Introduction to Multiple Time Series Analysis, Springer.