SimInf (version 11.1.0)

outdegree: Determine out-degree for each node in a model

Description

Calculate the out-degree of each node based on external transfer events ("extTrans") in the model's scheduled events.

Usage

outdegree(model)

Value

An integer vector where each element corresponds to a node, containing the count of unique destination nodes receiving individuals from it.

Arguments

model

A SimInf_model object containing the scheduled events.

Details

The out-degree is defined as the number of unique destination nodes that receive individuals from the source node at least once. This metric measures the connectivity of the network, indicating how many different neighbors a specific node directly sends individuals to.

See Also

indegree for calculating the number of unique source nodes that send individuals to a node. events_SIR for example event data used in network analysis. SimInf_events for details on the structure of scheduled events.

Examples

## Create an 'SIR' model with example data.
model <- SIR(
  u0 = u0_SIR(),
  tspan = 1:1460,
  events = events_SIR(),
  beta = 0.16,
  gamma = 0.077
)

## Calculate the out-degree for each node.
deg <- outdegree(model)

## View the out-degree for the first 6 nodes.
head(deg)

## Plot the distribution of out-degrees across all nodes.
## This shows how many destination nodes typically receive
## individuals from a given node.
hist(
  deg,
  main = "Distribution of Out-Degree (Unique Destinations)",
  xlab = "Number of Unique Destination Nodes"
)