Description Usage Arguments Details Value Author(s) See Also Examples
View source: R/pseudo_likelihood.R
Computes the pseudo-likelihood function of a Markov Random Field on a 2-dimensional lattice.
1 |
Z |
A |
mrfi |
A |
theta |
A 3-dimensional array describing potentials. Slices represent
interacting positions, rows represent pixel values and columns represent
neighbor values. As an example: |
log_scale |
A |
The pseudo-likelihood function is defined as the product of conditional probabilities of each pixel given its neighbors:
∏_i P(Z_i | Z_{{N}_i}, θ).
A numeric
with the pseudo-likelihood value.
Victor Freguglia
A paper with detailed description of the package can be found at doi: 10.18637/jss.v101.i08.
1 | pl_mrf2d(Z_potts, mrfi(1), theta_potts)
|
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