sim.random.field: Simulate an random MRF with random unary (node) and pair...

In npetraco/CRFutil: Handy Utility Functions for Use with CRF and gRbase packages

Simulate an random MRF with random unary (node) and pair (edge) potentials.

Description

Simulate an random MRF with random unary (node) and pair (edge) potentials.

Usage

sim.random.field(
  adj.mat = NULL,
  num.nodes,
  num.edges = NULL,
  prob.edge = 1,
  node.pot.nu = 30,
  node.pot.mean,
  node.pot.sd,
  edge.pot.nu = 30,
  edge.pot.mean,
  edge.pot.sd,
  num.sims,
  seed.node.pots = NULL,
  seed.edge.pots = NULL,
  seed.sample = NULL,
  plotQ = F
)

Arguments

XX

The XX

Details

Uses standard parameterization w11=w22, w12=w21. Graph is generated with erdos.renyi.game in igraph. If an edge appears in the graph, a relatively high to high potential (i.e. non-zero) should be generated to ensure the edge is potentially strong enough to be found from a random sample from the graph. However, the user can choose the the general strength and variability of the edge and node potentials though the edge.pot.mean/sd and node.pot.mean/sd arguments. They are generated with a t-distribution. The default nu is 30 making the random selections approximately normal. The number of edges in a randomly generated graph can be chosen by specification or by probability.

Value

The function will XX

npetraco/CRFutil documentation built on Nov. 23, 2023, 11:30 a.m.