Network Level Measures
Measure Value Row count 21.000 Column count 21.000 Link count 71.000 Density 0.169 Components of 1 node (isolates) 1 Components of 2 nodes (dyadic isolates) 0 Components of 3 or more nodes 1 Reciprocity 0.449 Characteristic path length 2.219 Clustering coefficient 0.487 Network levels (diameter) 5.000 Network fragmentation 0.095 Krackhardt connectedness 0.905 Krackhardt efficiency 0.825 Krackhardt hierarchy 0.190 Krackhardt upperboundedness 0.994 Degree centralization 0.504 Betweenness centralization 0.500 Closeness centralization 0.090 Eigenvector centralization 0.443 Reciprocal (symmetric)? No (44% of the links are reciprocal)
Node Level Measures
Measure Min Max Avg Stddev Total degree centrality 0.000 0.625 0.169 0.128 Total degree centrality [Unscaled] 0.000 25.000 6.762 5.117 In-degree centrality 0.000 0.600 0.169 0.139 In-degree centrality [Unscaled] 0.000 12.000 3.381 2.786 Out-degree centrality 0.000 0.650 0.169 0.137 Out-degree centrality [Unscaled] 0.000 13.000 3.381 2.734 Eigenvector centrality 0.000 0.667 0.266 0.156 Eigenvector centrality [Unscaled] 0.000 0.472 0.188 0.110 Eigenvector centrality per component 0.000 0.449 0.179 0.105 Closeness centrality 0.048 0.238 0.196 0.037 Closeness centrality [Unscaled] 0.002 0.012 0.010 0.002 In-Closeness centrality 0.048 0.408 0.281 0.101 In-Closeness centrality [Unscaled] 0.002 0.020 0.014 0.005 Betweenness centrality 0.000 0.528 0.052 0.114 Betweenness centrality [Unscaled] 0.000 200.633 19.857 43.253 Hub centrality 0.000 0.755 0.249 0.182 Authority centrality 0.000 0.719 0.246 0.186 Information centrality 0.000 0.078 0.048 0.017 Information centrality [Unscaled] 0.000 1.903 1.157 0.412 Clique membership count 0.000 11.000 2.667 2.494 Simmelian ties 0.000 0.300 0.052 0.082 Simmelian ties [Unscaled] 0.000 6.000 1.048 1.647 Clustering coefficient 0.000 1.000 0.487 0.275
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#11 (size: 21, density: 0.169048)
Rank Agent Value Unscaled Context* 1 11 0.625 25.000 5.575 2 19 0.300 12.000 1.601 3 2 0.275 11.000 1.295 4 12 0.250 10.000 0.990 5 1 0.200 8.000 0.378 6 5 0.200 8.000 0.378 7 18 0.200 8.000 0.378 8 8 0.175 7.000 0.073 9 9 0.175 7.000 0.073 10 13 0.175 7.000 0.073 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.169 Mean in random network: 0.169 Std.dev: 0.128 Std.dev in random network: 0.082 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#11
Rank Agent Value Unscaled 1 11 0.600 12.000 2 2 0.400 8.000 3 19 0.300 6.000 4 1 0.250 5.000 5 5 0.250 5.000 6 18 0.250 5.000 7 7 0.200 4.000 8 21 0.200 4.000 9 3 0.150 3.000 10 12 0.150 3.000 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#11
Rank Agent Value Unscaled 1 11 0.650 13.000 2 12 0.350 7.000 3 19 0.300 6.000 4 8 0.250 5.000 5 9 0.250 5.000 6 13 0.200 4.000 7 1 0.150 3.000 8 2 0.150 3.000 9 3 0.150 3.000 10 5 0.150 3.000 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#11 (size: 21, density: 0.169048)
Rank Agent Value Unscaled Context* 1 11 0.667 0.472 0.731 2 2 0.458 0.324 0.045 3 9 0.419 0.296 -0.084 4 19 0.417 0.295 -0.090 5 8 0.400 0.283 -0.148 6 1 0.387 0.274 -0.188 7 5 0.347 0.245 -0.321 8 18 0.342 0.242 -0.335 9 12 0.319 0.226 -0.412 10 13 0.266 0.188 -0.586 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.266 Mean in random network: 0.445 Std.dev: 0.156 Std.dev in random network: 0.305 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#11
Rank Agent Value 1 11 0.449 2 2 0.309 3 9 0.282 4 19 0.281 5 8 0.269 6 1 0.261 7 5 0.234 8 18 0.231 9 12 0.215 10 13 0.179 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#11 (size: 21, density: 0.169048)
Rank Agent Value Unscaled Context* 1 11 0.238 0.012 -2.662 2 12 0.220 0.011 -2.982 3 10 0.215 0.011 -3.065 4 16 0.215 0.011 -3.065 5 19 0.213 0.011 -3.105 6 8 0.211 0.011 -3.144 7 9 0.211 0.011 -3.144 8 13 0.208 0.010 -3.183 9 18 0.208 0.010 -3.183 10 1 0.206 0.010 -3.220 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.196 Mean in random network: 0.390 Std.dev: 0.037 Std.dev in random network: 0.057 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#11
Rank Agent Value Unscaled 1 11 0.408 0.020 2 2 0.385 0.019 3 18 0.345 0.017 4 1 0.339 0.017 5 12 0.339 0.017 6 19 0.328 0.016 7 4 0.323 0.016 8 5 0.323 0.016 9 17 0.323 0.016 10 3 0.313 0.016 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#11 (size: 21, density: 0.169048)
Rank Agent Value Unscaled Context* 1 11 0.528 200.633 8.617 2 12 0.158 60.150 1.552 3 21 0.086 32.667 0.169 4 2 0.081 30.917 0.081 5 18 0.072 27.350 -0.098 6 19 0.066 25.267 -0.203 7 3 0.032 12.067 -0.867 8 1 0.023 8.583 -1.042 9 17 0.015 5.833 -1.180 10 7 0.009 3.333 -1.306 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.052 Mean in random network: 0.077 Std.dev: 0.114 Std.dev in random network: 0.052 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#11
Rank Agent Value 1 11 0.755 2 8 0.495 3 9 0.484 4 12 0.396 5 19 0.379 6 13 0.349 7 1 0.316 8 2 0.284 9 18 0.280 10 5 0.267 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#11
Rank Agent Value 1 11 0.719 2 2 0.587 3 5 0.467 4 19 0.422 5 1 0.419 6 18 0.362 7 13 0.265 8 3 0.233 9 4 0.218 10 17 0.218 Information centrality
Calculate the Stephenson and Zelen information centrality measure for each node.
Input network(s): ACTOR#11
Rank Agent Value Unscaled 1 11 0.078 1.903 2 12 0.069 1.679 3 8 0.066 1.596 4 9 0.066 1.593 5 19 0.063 1.522 6 18 0.055 1.348 7 13 0.055 1.345 8 1 0.053 1.288 9 2 0.052 1.266 10 5 0.049 1.181 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#11
Rank Agent Value 1 11 11.000 2 12 6.000 3 19 6.000 4 2 5.000 5 1 3.000 6 5 3.000 7 8 3.000 8 21 3.000 9 3 2.000 10 4 2.000 Simmelian ties
The normalized number of Simmelian ties of each node.
Input network(s): ACTOR#11
Rank Agent Value Unscaled 1 11 0.300 6.000 2 2 0.150 3.000 3 5 0.150 3.000 4 13 0.150 3.000 5 19 0.150 3.000 6 1 0.100 2.000 7 18 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#11
Rank Agent Value 1 15 1.000 2 16 1.000 3 6 0.833 4 13 0.750 5 3 0.667 6 4 0.667 7 17 0.667 8 5 0.600 9 9 0.567 10 14 0.500
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 11 11 11 11 11 11 11 11 2 12 12 2 2 2 2 12 19 3 21 10 9 9 19 18 19 2 4 2 16 19 19 1 1 8 12 5 18 19 8 8 5 12 9 1 6 19 8 1 1 18 19 13 5 7 3 9 5 5 7 4 1 18 8 1 13 18 18 21 5 2 8 9 17 18 12 12 3 17 3 9 10 7 1 13 13 12 3 5 13