ug2dag

An undirected graph G can be converted to a dag if G
is chordal. A dag D can be converted to an undirected graph if
D can be moralized without adding edges.

The 'gRbase' package provides graphical modelling features
used by e.g. the packages 'gRain', 'gRim' and 'gRc'. 'gRbase' implements
graph algorithms including (i) maximum cardinality search (for marked
and unmarked graphs).
(ii) moralization, (iii) triangulation, (iv) creation of junction tree.
'gRbase' facilitates array operations,
'gRbase' implements functions for testing for conditional independence.
'gRbase' illustrates how hierarchical log-linear models may be
implemented and describes concept of graphical meta
data.
The facilities of the package are documented in the book by Højsgaard,
Edwards and Lauritzen (2012,
<doi:10.1007/978-1-4614-2299-0>) and in the paper by
Dethlefsen and Højsgaard, (2005, <doi:10.18637/jss.v014.i17>).
Please see 'citation("gRbase")' for citation details.
NOTICE 'gRbase' requires that the packages graph,
'Rgraphviz' and 'RBGL' are installed from 'bioconductor'. For
installation instructions please refer to the web page given below.

Søren Højsgaard

gRbase

A Package for Graphical Modelling in R

ug2dag function

<dl><dt>gn</dt>
<dd>A graphNEL object or an object that can be converted to a
graphNEL object.</dd></dl>

Arguments

Coerce between undirected and directed graphs when possible — ug2dag

<dl>

<dt>gn</dt>
<dd>A graphNEL object or an object that can be converted to a
graphNEL object.</dd>

</dl>

ug2dag: Coerce between undirected and directed graphs when possible

Description

Usage

Arguments