metric.distance.apl: Average Path Length
In networkgroupR/fastnet: Large-Scale Social Network Analysis

Description Usage Arguments Details Value Author(s) References Examples

Calculate the average path length of a graph.

1 2	metric.distance.apl(Network, probability = 0.95, error = 0.03, Cores = detectCores(), full.apl = FALSE)

`Network`	The input network.
`probability`	The confidence level probability.
`error`	The sampling error.
`Cores`	Number of cores to use in the computations. By default uses parallel function `detecCores()`.
`full.apl`	It will calculate the sampling version by default. If it is set to true, the population APL will be calculated and the rest of the parameters will be ignored.

The average path length (APL) is the average shortest path lengths of all pairs of nodes in graph Network. metric.distance.apl calculates the population APL and estimated APL of graph g with a sampling error set by the user.

The calculation uses a parallel load balancing approach, distributing jobs equally among the cores defined by the user.

A real value.

Luis Castro, Nazrul Shaikh.

E. W. Dijkstra. 1959. A note on two problems in connexion with graphs. Numer. Math. 1, 1 (December 1959), 269-271.

Castro L, Shaikh N. Estimation of Average Path Lengths of Social Networks via Random Node Pair Sampling. Department of Industrial Engineering, University of Miami. 2016.

## Not run: 
##Default function
x <-  net.erdos.renyi.gnp(1000,0.01)
metric.distance.apl(x)
##Population APL
metric.distance.apl(x, full.apl=TRUE)
##Sampling at 99% level with an error of 10% using 5 cores
metric.distance.apl(Network = x, probability=0.99, error=0.1, Cores=5)

## End(Not run)