Network Level Measures
Measure Value Row count 21.000 Column count 21.000 Link count 78.000 Density 0.186 Components of 1 node (isolates) 2 Components of 2 nodes (dyadic isolates) 0 Components of 3 or more nodes 1 Reciprocity 0.279 Characteristic path length 2.148 Clustering coefficient 0.407 Network levels (diameter) 6.000 Network fragmentation 0.186 Krackhardt connectedness 0.814 Krackhardt efficiency 0.719 Krackhardt hierarchy 0.448 Krackhardt upperboundedness 0.961 Degree centralization 0.375 Betweenness centralization 0.235 Closeness centralization 0.063 Eigenvector centralization 0.315 Reciprocal (symmetric)? No (27% of the links are reciprocal)
Node Level Measures
Measure Min Max Avg Stddev Total degree centrality 0.000 0.525 0.186 0.140 Total degree centrality [Unscaled] 0.000 21.000 7.429 5.585 In-degree centrality 0.000 0.650 0.186 0.207 In-degree centrality [Unscaled] 0.000 13.000 3.714 4.131 Out-degree centrality 0.000 0.400 0.186 0.123 Out-degree centrality [Unscaled] 0.000 8.000 3.714 2.452 Eigenvector centrality 0.000 0.547 0.263 0.162 Eigenvector centrality [Unscaled] 0.000 0.387 0.186 0.115 Eigenvector centrality per component 0.000 0.350 0.168 0.104 Closeness centrality 0.048 0.149 0.120 0.030 Closeness centrality [Unscaled] 0.002 0.007 0.006 0.002 In-Closeness centrality 0.048 0.286 0.163 0.078 In-Closeness centrality [Unscaled] 0.002 0.014 0.008 0.004 Betweenness centrality 0.000 0.261 0.037 0.065 Betweenness centrality [Unscaled] 0.000 99.167 14.000 24.849 Hub centrality 0.000 0.542 0.259 0.169 Authority centrality 0.000 0.691 0.207 0.229 Information centrality 0.000 0.078 0.048 0.023 Information centrality [Unscaled] 0.000 2.807 1.719 0.848 Clique membership count 0.000 12.000 3.333 3.314 Simmelian ties 0.000 0.200 0.038 0.071 Simmelian ties [Unscaled] 0.000 4.000 0.762 1.411 Clustering coefficient 0.000 0.800 0.407 0.206
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#7 (size: 21, density: 0.185714)
Rank Agent Value Unscaled Context* 1 11 0.525 21.000 3.998 2 2 0.500 20.000 3.704 3 6 0.325 13.000 1.641 4 17 0.325 13.000 1.641 5 4 0.275 11.000 1.052 6 21 0.275 11.000 1.052 7 7 0.200 8.000 0.168 8 14 0.200 8.000 0.168 9 19 0.175 7.000 -0.126 10 9 0.150 6.000 -0.421 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.186 Mean in random network: 0.186 Std.dev: 0.140 Std.dev in random network: 0.085 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#7
Rank Agent Value Unscaled 1 2 0.650 13.000 2 11 0.650 13.000 3 6 0.450 9.000 4 4 0.400 8.000 5 7 0.400 8.000 6 17 0.350 7.000 7 1 0.150 3.000 8 3 0.150 3.000 9 18 0.150 3.000 10 19 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#7
Rank Agent Value Unscaled 1 11 0.400 8.000 2 21 0.400 8.000 3 2 0.350 7.000 4 14 0.300 6.000 5 17 0.300 6.000 6 20 0.300 6.000 7 9 0.250 5.000 8 12 0.250 5.000 9 6 0.200 4.000 10 19 0.200 4.000 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#7 (size: 21, density: 0.185714)
Rank Agent Value Unscaled Context* 1 2 0.547 0.387 0.279 2 11 0.536 0.379 0.242 3 6 0.469 0.332 0.020 4 17 0.426 0.302 -0.122 5 4 0.416 0.294 -0.155 6 21 0.407 0.288 -0.185 7 7 0.393 0.278 -0.234 8 12 0.290 0.205 -0.576 9 9 0.289 0.204 -0.578 10 14 0.274 0.194 -0.628 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.263 Mean in random network: 0.463 Std.dev: 0.162 Std.dev in random network: 0.302 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#7
Rank Agent Value 1 2 0.350 2 11 0.343 3 6 0.300 4 17 0.273 5 4 0.266 6 21 0.261 7 7 0.251 8 12 0.185 9 9 0.185 10 14 0.175 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#7 (size: 21, density: 0.185714)
Rank Agent Value Unscaled Context* 1 20 0.149 0.007 -4.648 2 15 0.146 0.007 -4.705 3 8 0.139 0.007 -4.829 4 16 0.139 0.007 -4.829 5 14 0.134 0.007 -4.910 6 11 0.133 0.007 -4.926 7 21 0.132 0.007 -4.957 8 2 0.131 0.007 -4.972 9 17 0.130 0.006 -4.987 10 19 0.130 0.006 -4.987 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.120 Mean in random network: 0.415 Std.dev: 0.030 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#7
Rank Agent Value Unscaled 1 7 0.286 0.014 2 2 0.238 0.012 3 11 0.238 0.012 4 6 0.227 0.011 5 4 0.222 0.011 6 17 0.222 0.011 7 1 0.213 0.011 8 3 0.206 0.010 9 18 0.204 0.010 10 21 0.204 0.010 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#7 (size: 21, density: 0.185714)
Rank Agent Value Unscaled Context* 1 11 0.261 99.167 3.814 2 2 0.159 60.400 1.736 3 3 0.104 39.400 0.610 4 14 0.087 33.167 0.276 5 19 0.051 19.500 -0.457 6 21 0.047 18.000 -0.537 7 17 0.035 13.400 -0.784 8 4 0.020 7.667 -1.091 9 6 0.005 1.900 -1.400 10 18 0.004 1.400 -1.427 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.037 Mean in random network: 0.074 Std.dev: 0.065 Std.dev in random network: 0.049 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#7
Rank Agent Value 1 21 0.542 2 11 0.470 3 17 0.461 4 9 0.435 5 2 0.415 6 14 0.413 7 20 0.403 8 12 0.380 9 6 0.346 10 4 0.287 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#7
Rank Agent Value 1 2 0.691 2 11 0.613 3 6 0.580 4 7 0.531 5 17 0.434 6 4 0.413 7 18 0.207 8 3 0.196 9 21 0.191 10 1 0.164 Information centrality
Calculate the Stephenson and Zelen information centrality measure for each node.
Input network(s): ACTOR#7
Rank Agent Value Unscaled 1 11 0.078 2.807 2 21 0.074 2.688 3 2 0.071 2.571 4 20 0.068 2.465 5 17 0.067 2.414 6 14 0.066 2.380 7 9 0.063 2.273 8 12 0.063 2.271 9 6 0.057 2.068 10 19 0.055 1.972 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#7
Rank Agent Value 1 2 12.000 2 11 12.000 3 4 6.000 4 6 6.000 5 17 5.000 6 7 4.000 7 19 4.000 8 21 4.000 9 14 3.000 10 1 2.000 Simmelian ties
The normalized number of Simmelian ties of each node.
Input network(s): ACTOR#7
Rank Agent Value Unscaled 1 2 0.200 4.000 2 17 0.200 4.000 3 6 0.150 3.000 4 11 0.150 3.000 5 21 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#7
Rank Agent Value 1 9 0.800 2 12 0.750 3 8 0.667 4 7 0.518 5 21 0.518 6 1 0.500 7 5 0.500 8 15 0.500 9 16 0.500 10 18 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 20 2 2 2 7 11 11 2 2 15 11 11 11 2 21 2 3 3 8 6 6 6 11 2 6 4 14 16 17 17 4 6 14 17 5 19 14 4 4 7 4 17 4 6 21 11 21 21 17 17 20 21 7 17 21 7 7 1 1 9 7 8 4 2 12 12 3 3 12 14 9 6 17 9 9 18 18 6 19 10 18 19 14 14 19 21 19 9