Network Level Measures
Measure Value Row count 21.000 Column count 21.000 Link count 110.000 Density 0.262 Components of 1 node (isolates) 0 Components of 2 nodes (dyadic isolates) 0 Components of 3 or more nodes 1 Reciprocity 0.158 Characteristic path length 1.933 Clustering coefficient 0.435 Network levels (diameter) 6.000 Network fragmentation 0.000 Krackhardt connectedness 1.000 Krackhardt efficiency 0.605 Krackhardt hierarchy 0.592 Krackhardt upperboundedness 0.905 Degree centralization 0.346 Betweenness centralization 0.106 Closeness centralization 0.142 Eigenvector centralization 0.266 Reciprocal (symmetric)? No (15% of the links are reciprocal)
Node Level Measures
Measure Min Max Avg Stddev Total degree centrality 0.075 0.575 0.262 0.126 Total degree centrality [Unscaled] 3.000 23.000 10.476 5.020 In-degree centrality 0.000 1.000 0.262 0.264 In-degree centrality [Unscaled] 0.000 20.000 5.238 5.273 Out-degree centrality 0.100 0.450 0.262 0.102 Out-degree centrality [Unscaled] 2.000 9.000 5.238 2.045 Eigenvector centrality 0.115 0.531 0.291 0.104 Eigenvector centrality [Unscaled] 0.082 0.376 0.205 0.074 Eigenvector centrality per component 0.082 0.376 0.205 0.074 Closeness centrality 0.096 0.183 0.117 0.024 Closeness centrality [Unscaled] 0.005 0.009 0.006 0.001 In-Closeness centrality 0.048 1.000 0.362 0.279 In-Closeness centrality [Unscaled] 0.002 0.050 0.018 0.014 Betweenness centrality 0.000 0.132 0.031 0.043 Betweenness centrality [Unscaled] 0.000 50.137 11.952 16.525 Hub centrality 0.154 0.495 0.293 0.097 Authority centrality 0.000 0.769 0.221 0.216 Information centrality 0.030 0.062 0.048 0.009 Information centrality [Unscaled] 1.608 3.306 2.540 0.454 Clique membership count 1.000 29.000 7.190 6.609 Simmelian ties 0.000 0.200 0.057 0.069 Simmelian ties [Unscaled] 0.000 4.000 1.143 1.390 Clustering coefficient 0.229 1.000 0.435 0.170
Key Nodes
This chart shows the Agent that is repeatedly top-ranked in the measures listed below. The value shown is the percentage of measures for which the Agent was ranked in the top three.
Total degree centrality
The Total Degree Centrality of a node is the normalized sum of its row and column degrees. Individuals or organizations who are "in the know" are those who are linked to many others and so, by virtue of their position have access to the ideas, thoughts, beliefs of many others. Individuals who are "in the know" are identified by degree centrality in the relevant social network. Those who are ranked high on this metrics have more connections to others in the same network. The scientific name of this measure is total degree centrality and it is calculated on the agent by agent matrices.
Input network: ACTOR#2 (size: 21, density: 0.261905)
Rank Agent Value Unscaled Context* 1 2 0.575 23.000 3.263 2 1 0.450 18.000 1.960 3 18 0.450 18.000 1.960 4 21 0.400 16.000 1.439 5 20 0.350 14.000 0.918 6 4 0.325 13.000 0.658 7 6 0.300 12.000 0.397 8 7 0.275 11.000 0.136 9 16 0.275 11.000 0.136 10 5 0.250 10.000 -0.124 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.262 Mean in random network: 0.262 Std.dev: 0.126 Std.dev in random network: 0.096 In-degree centrality
The In Degree Centrality of a node is its normalized in-degree. For any node, e.g. an individual or a resource, the in-links are the connections that the node of interest receives from other nodes. For example, imagine an agent by knowledge matrix then the number of in-links a piece of knowledge has is the number of agents that are connected to. The scientific name of this measure is in-degree and it is calculated on the agent by agent matrices.
Input network(s): ACTOR#2
Rank Agent Value Unscaled 1 2 1.000 20.000 2 21 0.650 13.000 3 1 0.600 12.000 4 18 0.550 11.000 5 7 0.450 9.000 6 6 0.400 8.000 7 14 0.350 7.000 8 4 0.300 6.000 9 16 0.300 6.000 10 20 0.250 5.000 Out-degree centrality
For any node, e.g. an individual or a resource, the out-links are the connections that the node of interest sends to other nodes. For example, imagine an agent by knowledge matrix then the number of out-links an agent would have is the number of pieces of knowledge it is connected to. The scientific name of this measure is out-degree and it is calculated on the agent by agent matrices. Individuals or organizations who are high in most knowledge have more expertise or are associated with more types of knowledge than are others. If no sub-network connecting agents to knowledge exists, then this measure will not be calculated. The scientific name of this measure is out degree centrality and it is calculated on agent by knowledge matrices. Individuals or organizations who are high in "most resources" have more resources or are associated with more types of resources than are others. If no sub-network connecting agents to resources exists, then this measure will not be calculated. The scientific name of this measure is out degree centrality and it is calculated on agent by resource matrices.
Input network(s): ACTOR#2
Rank Agent Value Unscaled 1 15 0.450 9.000 2 20 0.450 9.000 3 5 0.400 8.000 4 13 0.400 8.000 5 4 0.350 7.000 6 18 0.350 7.000 7 1 0.300 6.000 8 3 0.300 6.000 9 8 0.250 5.000 10 9 0.250 5.000 Eigenvector centrality
Calculates the principal eigenvector of the network. A node is central to the extent that its neighbors are central. Leaders of strong cliques are individuals who or organizations who are collected to others that are themselves highly connected to each other. In other words, if you have a clique then the individual most connected to others in the clique and other cliques, is the leader of the clique. Individuals or organizations who are connected to many otherwise isolated individuals or organizations will have a much lower score in this measure then those that are connected to groups that have many connections themselves. The scientific name of this measure is eigenvector centrality and it is calculated on agent by agent matrices.
Input network: ACTOR#2 (size: 21, density: 0.261905)
Rank Agent Value Unscaled Context* 1 2 0.531 0.376 -0.059 2 18 0.445 0.314 -0.360 3 20 0.437 0.309 -0.385 4 1 0.384 0.272 -0.571 5 21 0.382 0.270 -0.577 6 5 0.349 0.247 -0.692 7 15 0.319 0.226 -0.796 8 14 0.308 0.218 -0.835 9 7 0.301 0.213 -0.860 10 4 0.300 0.212 -0.864 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.291 Mean in random network: 0.548 Std.dev: 0.104 Std.dev in random network: 0.287 Eigenvector centrality per component
Calculates the principal eigenvector of the network. A node is central to the extent that its neighbors are central. Each component is extracted as a separate network, Eigenvector Centrality is computed on it and scaled according to the component size. The scores are then combined into a single result vector.
Input network(s): ACTOR#2
Rank Agent Value 1 2 0.376 2 18 0.314 3 20 0.309 4 1 0.272 5 21 0.270 6 5 0.247 7 15 0.226 8 14 0.218 9 7 0.213 10 4 0.212 Closeness centrality
The average closeness of a node to the other nodes in a network (also called out-closeness). Loosely, Closeness is the inverse of the average distance in the network from the node to all other nodes.
Input network: ACTOR#2 (size: 21, density: 0.261905)
Rank Agent Value Unscaled Context* 1 15 0.183 0.009 -6.008 2 13 0.182 0.009 -6.037 3 5 0.136 0.007 -6.829 4 9 0.132 0.007 -6.891 5 19 0.132 0.007 -6.907 6 20 0.122 0.006 -7.073 7 10 0.116 0.006 -7.183 8 17 0.111 0.006 -7.261 9 1 0.108 0.005 -7.323 10 4 0.108 0.005 -7.323 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.117 Mean in random network: 0.531 Std.dev: 0.024 Std.dev in random network: 0.058 In-Closeness centrality
The average closeness of a node from the other nodes in a network. Loosely, Closeness is the inverse of the average distance in the network to the node and from all other nodes.
Input network(s): ACTOR#2
Rank Agent Value Unscaled 1 2 1.000 0.050 2 21 0.741 0.037 3 7 0.645 0.032 4 6 0.625 0.031 5 1 0.571 0.029 6 4 0.556 0.028 7 18 0.556 0.028 8 11 0.513 0.026 9 16 0.488 0.024 10 8 0.417 0.021 Betweenness centrality
The Betweenness Centrality of node v in a network is defined as: across all node pairs that have a shortest path containing v, the percentage that pass through v. Individuals or organizations that are potentially influential are positioned to broker connections between groups and to bring to bear the influence of one group on another or serve as a gatekeeper between groups. This agent occurs on many of the shortest paths between other agents. The scientific name of this measure is betweenness centrality and it is calculated on agent by agent matrices.
Input network: ACTOR#2 (size: 21, density: 0.261905)
Rank Agent Value Unscaled Context* 1 1 0.132 50.137 2.142 2 6 0.129 49.100 2.063 3 4 0.128 48.802 2.040 4 2 0.050 19.167 -0.231 5 11 0.046 17.352 -0.370 6 18 0.040 15.236 -0.533 7 3 0.036 13.833 -0.640 8 21 0.033 12.500 -0.742 9 20 0.027 10.219 -0.917 10 16 0.020 7.595 -1.118 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.031 Mean in random network: 0.058 Std.dev: 0.043 Std.dev in random network: 0.034 Hub centrality
A node is hub-central to the extent that its out-links are to nodes that have many in-links. Individuals or organizations that act as hubs are sending information to a wide range of others each of whom has many others reporting to them. Technically, an agent is hub-central if its out-links are to agents that have many other agents sending links to them. The scientific name of this measure is hub centrality and it is calculated on agent by agent matrices.
Input network(s): ACTOR#2
Rank Agent Value 1 20 0.495 2 5 0.456 3 15 0.440 4 13 0.382 5 18 0.373 6 3 0.368 7 4 0.358 8 8 0.327 9 9 0.307 10 11 0.299 Authority centrality
A node is authority-central to the extent that its in-links are from nodes that have many out-links. Individuals or organizations that act as authorities are receiving information from a wide range of others each of whom sends information to a large number of others. Technically, an agent is authority-central if its in-links are from agents that have are sending links to many others. The scientific name of this measure is authority centrality and it is calculated on agent by agent matrices.
Input network(s): ACTOR#2
Rank Agent Value 1 2 0.769 2 1 0.555 3 21 0.512 4 18 0.488 5 7 0.375 6 14 0.345 7 6 0.315 8 16 0.274 9 20 0.234 10 4 0.229 Information centrality
Calculate the Stephenson and Zelen information centrality measure for each node.
Input network(s): ACTOR#2
Rank Agent Value Unscaled 1 20 0.062 3.306 2 15 0.061 3.255 3 5 0.059 3.134 4 13 0.059 3.121 5 18 0.056 2.998 6 4 0.054 2.896 7 3 0.052 2.787 8 1 0.051 2.715 9 8 0.048 2.559 10 9 0.048 2.552 Clique membership count
The number of distinct cliques to which each node belongs. Individuals or organizations who are high in number of cliques are those that belong to a large number of distinct cliques. A clique is defined as a group of three or more actors that have many connections to each other and relatively fewer connections to those in other groups. The scientific name of this measure is clique count and it is calculated on the agent by agent matrices.
Input network(s): ACTOR#2
Rank Agent Value 1 2 29.000 2 20 18.000 3 18 16.000 4 21 11.000 5 1 10.000 6 5 9.000 7 14 7.000 8 6 6.000 9 7 6.000 10 15 6.000 Simmelian ties
The normalized number of Simmelian ties of each node.
Input network(s): ACTOR#2
Rank Agent Value Unscaled 1 1 0.200 4.000 2 2 0.150 3.000 3 16 0.150 3.000 4 18 0.150 3.000 5 21 0.150 3.000 6 4 0.100 2.000 7 6 0.100 2.000 8 7 0.100 2.000 9 11 0.100 2.000 Clustering coefficient
Measures the degree of clustering in a network by averaging the clustering coefficient of each node, which is defined as the density of the node's ego network.
Input network(s): ACTOR#2
Rank Agent Value 1 17 1.000 2 12 0.750 3 10 0.583 4 8 0.482 5 3 0.467 6 9 0.450 7 5 0.433 8 11 0.433 9 19 0.433 10 4 0.431
Key Nodes Table
This shows the top scoring nodes side-by-side for selected measures.
Rank Betweenness centrality Closeness centrality Eigenvector centrality Eigenvector centrality per component In-degree centrality In-Closeness centrality Out-degree centrality Total degree centrality 1 1 15 2 2 2 2 15 2 2 6 13 18 18 21 21 20 1 3 4 5 20 20 1 7 5 18 4 2 9 1 1 18 6 13 21 5 11 19 21 21 7 1 4 20 6 18 20 5 5 6 4 18 4 7 3 10 15 15 14 18 1 6 8 21 17 14 14 4 11 3 7 9 20 1 7 7 16 16 8 16 10 16 4 4 4 20 8 9 5