DOCS, Meaning of: Factors, Likelihoods, Potentials, Partials

[dehann]

Define what is meant with these Nouns:

• Factors: as captured in factor graph,
• MessageLikelihood, a joint belief message propagating on the tree,
• Potential, all likelihoods needed for a subgraph solve (Markov Potential)
• Partial, a factor or likelihood that only constrains some of the dimensions

Related

• Decide if msg channels in BTND or edges only #675 (where to store msg channels)
• Consolidate Subgraph functions (DFG #373)  #679 (consolidate subgraph functions)

Code

• IncrementalInference.jl/src/JunctionTreeTypes.jl

  Lines 237 to 242 in 7c03d00

  	frontalIDs::Vector{Symbol}
  	separatorIDs::Vector{Symbol}
  	inmsgIDs::Vector{Symbol} # Int
  	potIDs::Vector{Symbol} # Int # this is likely redundant TODO -- remove
  	potentials::Vector{Symbol}
  	partialpotential::Vector{Bool}

[dehann]

also needs to be added to the verbNoun definitions wiki.