lame (version 1.3.4)

rUV_dynamic_snap_fc: Gibbs sampling of dynamic U and V with snap-shift dynamics

Description

Like rUV_dynamic_fc but lets each actor's latent position either drift under the AR(1) prior or jump under a diffuse N(0, kappa^2) snap prior, chosen per actor-period by a Gaussian log-marginal model selection.

Usage

rUV_dynamic_snap_fc(
  U,
  V,
  ET,
  rho_uv,
  sigma_uv,
  s2,
  kappa,
  pi_snap,
  delta_u_current = NULL,
  delta_v_current = NULL,
  shrink = TRUE,
  symmetric = FALSE
)

Value

list with updated U, V arrays and delta_u, delta_v snap indicators

Arguments

U

3D array of current U positions (n x R x T)

V

3D array of current V positions (n x R x T)

ET

3D array of residuals (n x n x T)

rho_uv

AR(1) autoregressive parameter for the drift prior

sigma_uv

Innovation standard deviation for the drift prior

s2

dyadic variance

kappa

diffuse snap-prior standard deviation

pi_snap

prior snap probability

delta_u_current

current sender-side snap indicators. If NULL, a zero matrix is used.

delta_v_current

current receiver-side snap indicators. If NULL, a zero matrix is used.

shrink

whether to apply shrinkage (default TRUE)

symmetric

whether the network is symmetric (default FALSE)

Author

Cassy Dorff, Shahryar Minhas, Tosin Salau