QuACN (version 1.8.0)

infoTheoreticLabeledE: Information functional for edge-labeled graphs

Description

This method assigns a probability value to each vertex of the network using an information functional for edge-labeled graphs. It is based on the same principles as infoTheoreticGCM.

Usage

infoTheoreticLabeledE(g, dist=NULL, coeff="lin", custCoeff=NULL, lambda=1000)

Arguments

g

a graph as a graphNEL object. Each edge must have a "bond" data attribute specifying its conventional bond order (1, 2, 3 or 1.5 for single, double, triple and aromatic bonds, respectively).

dist

the distance matrix of the graph. Will be automatically calculated if not supplied.

coeff

specifies the weighting coefficients. Possible values are "lin" (default), "quad", "exp", "const" or "cust". If it is set to "cust" you have to specify your customized weighting schema with the parameter custCoeff.

custCoeff

specifies the customized weighting scheme. To use it you need to set coeff="cust".

lambda

specifies the scaling constant for the distance measures. The default value is 1000.

Value

The returned list consists of the following items:

entropy

contains the calculated entropy measure.

distance

contains the calculated distance measure.

pis

contains the calculated probability distribution.

fvi

contains the calculated values of the functional for each vertex.

Details

For details see the vignette.

References

M. Dehmer, N. Barbarini, K. Varmuza, and A. Graber. Novel topological descriptors for analyzing biological networks. BMC Structural Biology, 10:18, 2010.

Examples

set.seed(987)
g <- randomEGraph(as.character(1:10), 0.3)

edgeDataDefaults(g, "bond") <- 1
edgeData(g, "1", "6", "bond") <- 3
edgeData(g, "2", "8", "bond") <- 2

infoTheoreticLabeledE(g, coeff="exp")