group.mreach.closeness: Compute the Group-level mreach.closeness Centrality Score in...

Description Usage Arguments Value Author(s)

View source: R/keyplayer.R

Description

mreach.closeness refines the mreach.degree centrality by using the (inverse) geodistance as weights. The edge values should be properly interpreted as distances.

Usage

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group.mreach.closeness(adj.matrix, nodes, M = Inf, method = "min",
  binary = FALSE, cmode = "total", large = TRUE, geodist.precomp = NULL)

Arguments

adj.matrix

Matrix indicating the adjacency matrix of the network.

nodes

Integer indicating the column index of the chosen player in the adjacenncy matrix. If there are multiple players, use c(index1,index2,...)

M

Number indicating the maximum distance between two nodes, above witch the two nodes are considered disconnected. The default is Inf.

method

Indication of which grouping criterion should be used. method="min" indicates the "minimum" criterion (edge values as distances). method="max" indicates the "maximum" criterion (edge values as non-cummulative strengths). method="add" indicates the "addition" criterion (edge values as cummulative strengths). method="union" indicates the "union" criterion (edge values as probability). The default is the "minimum" criterion for mrach.closeness centrality.

binary

If TRUE, the adjacency matrix is binarized. If FALSE, the edge values are considered.

cmode

String indicating the type of centrality being evaluated. The default is to report the total degree. "outdegree" and "indegree" refer to indegree and outdegree respectively. If "all", all the three types are reported.

large

Logical scalar, whether the computation method for large network is implemented. If TRUE (the default), the method implmented in igraph is used; otherwise the method implemented in sna is used.

geodist.precomp

Geodistance precomputed for the graph to be analyzed (optional).

Value

A vector indicating the outdegree, indegree, or total-degree cohesion score of the chosen players; or a data frame containing all the above information. Note that the outdegree and indegree scores are normalized to [0,1]. This means that the total-degree score is between [0,2].

Author(s)

Weihua An [email protected]; Yu-Hsin Liu [email protected]


keyplayer documentation built on May 30, 2017, 3 a.m.