Compute node density for neighbor_graph object — node_density.neighbor

Compute the node density for a neighbor_graph object based on local neighborhoods.

Usage

# S3 method for class 'neighbor_graph'
node_density(x, X, ...)

Arguments

x: A neighbor_graph object.
X: A data matrix containing the data points, with rows as observations.
...: Additional arguments (currently ignored).

Value

A numeric vector containing the node densities.

Details

Node density is computed as the average squared distance from each node to its neighbors, normalized by the square of the neighborhood size.

Examples

# \donttest{
X <- matrix(rnorm(30), nrow = 10, ncol = 3)
adj_matrix <- Matrix::Matrix(diag(10), sparse = TRUE)
ng <- neighbor_graph(adj_matrix)
densities <- node_density(ng, X)
# }