Graphs_and_Graphical_Models

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title: Graphs and Graphical Models permalink: wiki/Graphs_and_Graphical_Models/ layout: wiki

Graphs.m2 needs

• displayGraph needs fixing for type Graph --- o.k. for type Digraph
  • displayGraph works!
  • add options to change node shape, colors, etc.

• documentation -- don't forget examples!

• tests

• ancestors and descendents need to work on more general digraph.
• other formats for entering graphs, like incidence matrices.
• Do we implement graphs with loops and multiple edges?

GraphicalModels.m2 needs

• Bring into compliance with the new Graphs.m2 package.
  • Graphical models works fine with Digraphs given with numerical nodes, entered in a rigid way. However, digraph now allows for general node names and the functions do not yet work with that. TO DO --- get Graphical Models functions to work with general node names --- Two ways to do this: (1) Write a label conversion function, (2) fix the general code. Doing (1) first, then 2.

• Documentation, examples and tests for the existing code for digraphs.

• Code for graphical models that are not digraphs for discrete.

• Garcia is working on Gaussian models.

Bugs

• displayGraphs does not like nodes/vertices which are monomials (i.e. subscripts/superscripts)