genRandomPar {blockmodeling} | R Documentation |
The function generates random partitions. The function is meant to be caled by the function opt.random.par
genRandomPar(k, n, seed = NULL, mingr = 1, maxgr = Inf, addParam = list(genPajekPar = TRUE, probGenMech = NULL))
k |
Number of clusters (by modes) |
n |
Number of units (by modes) |
seed |
Seed for generating random numbers (partitions) |
mingr |
Minimal alowed group size |
maxgr |
Maximal alowed group size |
addParam |
This has to be a list with the following parameters (any or all can be missing, then the default values (see usage) are used): "genPajekPar" - Should the partitions be generated as in Pajek (Batagelj and Mrvar, 2006). If FALSE , all partitions are selected completly at random while making sure that the partitions have the required number of clusters. "probGenMech" - Here the probabilities for 4 diferent generating mechanichems can be specified. If this is not specified, the value is set to c(1/3,1/3,1/3,0) if genPajekPar is TRUE and to c(0,0,0,1) if genPajekPar is FALSE . The first 3 mechanisems are the same as implemetned in Pajek (the second one has almost all units in only one cluster) and the fourth is completly random (from uniform distribution).
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A random partition in the format required by opt.random.par
. If a netowork has several modes, than a list of partitions, one for each mode.
Aleš Žiberna
BATAGELJ, Vladimir, MRVAR, Andrej (2006): Pajek 1.11, http://vlado.fmf.uni lj.si/pub/networks/pajek/ (accessed January 6, 2006).