Temporal-noise specification

Usage

noise_spec(
  struct = c("iid", "ar1", "ar2", "arp"),
  p = NULL,
  q = 0L,
  iter_gls = 1L,
  pooling = c("run", "global", "parcel"),
  parcels = NULL,
  voxelwise = FALSE,
  exact_first = FALSE,
  censor = NULL,
  shrink_c0 = 100L
)

Arguments

struct: One of iid, ar1, ar2, or arp.
p: AR order for struct = "arp".
q: Reserved MA order. Nonzero MA order is rejected until the fitter exposes an MA-capable inference path.
iter_gls: Number of GLS refinement iterations.
pooling: Temporal covariance pooling scope.
parcels: Optional parcel labels for parcel pooling.
voxelwise: Estimate temporal covariance separately by voxel.
exact_first: Use exact first-observation AR scaling.
censor: Optional censor indices, logical mask, or "auto".
shrink_c0: Parcel shrinkage constant used by supporting engines.