Partition_Index {SyNet} | R Documentation |
Indicates the tendency of a sympatry network to contain species aggregated into locally dense groups, despite the existence of intermediary species connecting them to a more global low density network.
Partition_Index(msym, n = NROW(msym))
msym |
Matrix object. It must be binary (1/0) and symmetric. |
n |
Number of nodes. |
The index is based on clustering coefficient measure (C). It considers, for each node, the maximum between its own C value and the lowest C value at its neighbourhood. The selected value is known as clustering performance after Dos Santos et al. (2008). Finally, the mean of clustering performances is obtained.
This function is for internal use.
A real number between 0 and 1, where high values suggest the existence of dense groups of sympatric species.
Daniel A. Dos Santos
Dos Santos, D.A., Fernandez, H.R., Cuezzo, M.G., Dominguez, E. Sympatry Inference and Network Analysis in Biogeography. Systematic Biology (in press).
This statistic is used by partition
.