returns the number of different Bayesian networks having n
labelled or not nodes. Non labelled nodes means that nodes are
exchangeable: A -> B is identical to A <- B.
Usage
nb8bn(n, label=FALSE)
Value
Number of Bayesian networks
Arguments
n
number of nodes. Must be less or equal to 18.
label
Indicates if the nodes must be considered as labelled or
not.
Details
When not labelled nodes, the results were proposed by Sloane in 'the
on line encyclopedy of integer sequences' (http://oeis.org/A003087).
For labelled nodes, just the application of the recursive formula of
Robinson.