Calculates common social network measures on each selected input network.
Network agent_agent
Network Level Measures
Measure Value Row count 271.000 Column count 271.000 Link count 676.000 Density 0.018 Components of 1 node (isolates) 12 Components of 2 nodes (dyadic isolates) 9 Components of 3 or more nodes 16 Reciprocity 1.000 Characteristic path length 3.330 Clustering coefficient 0.650 Network levels (diameter) 9.500 Network fragmentation 0.777 Krackhardt connectedness 0.223 Krackhardt efficiency 0.944 Krackhardt hierarchy 0.000 Krackhardt upperboundedness 1.000 Degree centralization 0.017 Betweenness centralization 0.119 Closeness centralization 0.000 Eigenvector centralization 0.875 Reciprocal (symmetric)? Yes
Node Level Measures
Measure Min Max Avg Stddev Total degree centrality 0.000 0.018 0.001 0.002 Total degree centrality [Unscaled] 0.000 24.000 1.720 2.436 In-degree centrality 0.000 0.018 0.001 0.002 In-degree centrality [Unscaled] 0.000 24.000 1.720 2.436 Out-degree centrality 0.000 0.018 0.001 0.002 Out-degree centrality [Unscaled] 0.000 24.000 1.720 2.436 Eigenvector centrality 0.000 0.890 0.021 0.083 Eigenvector centrality [Unscaled] 0.000 0.629 0.015 0.059 Eigenvector centrality per component 0.000 0.274 0.012 0.026 Closeness centrality 0.000 0.000 0.000 0.000 Closeness centrality [Unscaled] 0.000 0.000 0.000 0.000 In-Closeness centrality 0.000 0.000 0.000 0.000 In-Closeness centrality [Unscaled] 0.000 0.000 0.000 0.000 Betweenness centrality 0.000 0.122 0.004 0.016 Betweenness centrality [Unscaled] 0.000 4432.500 136.477 576.741 Hub centrality 0.000 0.890 0.021 0.083 Authority centrality 0.000 0.890 0.021 0.083 Clique membership count 0.000 9.000 1.018 1.115 Simmelian ties 0.000 0.148 0.017 0.023 Simmelian ties [Unscaled] 0.000 40.000 4.613 6.103 Clustering coefficient 0.000 1.000 0.650 0.442
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: agent_agent (size: 271, density: 0.0184775)
Rank Agent Value Unscaled Context* 1 1 0.018 24.000 -0.086 2 15 0.014 19.000 -0.538 3 0 0.014 19.000 -0.538 4 50 0.010 14.000 -0.991 5 11 0.006 8.000 -1.534 6 25 0.005 7.000 -1.625 7 13 0.004 6.000 -1.715 8 5 0.004 5.000 -1.806 9 3 0.004 5.000 -1.806 10 81 0.004 5.000 -1.806 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.001 Mean in random network: 0.018 Std.dev: 0.002 Std.dev in random network: 0.008 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): agent_agent
Rank Agent Value Unscaled 1 1 0.018 24.000 2 15 0.014 19.000 3 0 0.014 19.000 4 50 0.010 14.000 5 11 0.006 8.000 6 25 0.005 7.000 7 13 0.004 6.000 8 5 0.004 5.000 9 3 0.004 5.000 10 81 0.004 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): agent_agent
Rank Agent Value Unscaled 1 1 0.018 24.000 2 15 0.014 19.000 3 0 0.014 19.000 4 50 0.010 14.000 5 11 0.006 8.000 6 25 0.005 7.000 7 13 0.004 6.000 8 5 0.004 5.000 9 3 0.004 5.000 10 81 0.004 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: agent_agent (size: 271, density: 0.0184775)
Rank Agent Value Unscaled Context* 1 0 0.890 0.629 -2.782 2 15 0.776 0.549 -3.468 3 58 0.428 0.303 -5.574 4 39 0.338 0.239 -6.120 5 1 0.220 0.155 -6.837 6 120 0.194 0.137 -6.995 7 246 0.156 0.111 -7.220 8 121 0.149 0.105 -7.266 9 159 0.139 0.099 -7.322 10 70 0.112 0.079 -7.489 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.021 Mean in random network: 1.349 Std.dev: 0.083 Std.dev in random network: 0.165 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): agent_agent
Rank Agent Value 1 0 0.274 2 15 0.239 3 58 0.132 4 39 0.104 5 1 0.068 6 81 0.063 7 46 0.061 8 73 0.061 9 120 0.060 10 219 0.051 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: agent_agent (size: 271, density: 0.0184775)
Rank Agent Value Unscaled Context* 1 15 0.000 0.000 9.959 2 246 0.000 0.000 9.959 3 0 0.000 0.000 9.959 4 13 0.000 0.000 9.959 5 58 0.000 0.000 9.959 6 263 0.000 0.000 9.959 7 108 0.000 0.000 9.959 8 116 0.000 0.000 9.959 9 142 0.000 0.000 9.959 10 143 0.000 0.000 9.959 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.000 Mean in random network: 0.193 Std.dev: 0.000 Std.dev in random network: -0.019 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): agent_agent
Rank Agent Value Unscaled 1 15 0.000 0.000 2 246 0.000 0.000 3 0 0.000 0.000 4 13 0.000 0.000 5 58 0.000 0.000 6 263 0.000 0.000 7 108 0.000 0.000 8 116 0.000 0.000 9 142 0.000 0.000 10 143 0.000 0.000 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: agent_agent (size: 271, density: 0.0184775)
Rank Agent Value Unscaled Context* 1 15 0.122 4432.500 5.717 2 0 0.103 3757.000 4.767 3 1 0.102 3709.000 4.700 4 246 0.089 3224.000 4.018 5 13 0.080 2916.500 3.585 6 11 0.080 2888.500 3.546 7 5 0.070 2544.500 3.062 8 2 0.055 1980.667 2.269 9 50 0.050 1810.833 2.030 10 12 0.038 1394.000 1.444 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.004 Mean in random network: 0.010 Std.dev: 0.016 Std.dev in random network: 0.020 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): agent_agent
Rank Agent Value 1 0 0.890 2 15 0.776 3 58 0.428 4 39 0.338 5 1 0.220 6 120 0.194 7 246 0.156 8 121 0.149 9 159 0.139 10 70 0.112 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): agent_agent
Rank Agent Value 1 0 0.890 2 15 0.776 3 58 0.428 4 39 0.338 5 1 0.220 6 120 0.194 7 246 0.156 8 121 0.149 9 159 0.139 10 70 0.112 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): agent_agent
Rank Agent Value 1 1 9.000 2 50 9.000 3 15 7.000 4 4 5.000 5 0 4.000 6 3 4.000 7 73 4.000 8 81 4.000 9 2 3.000 10 5 3.000 Simmelian ties
The normalized number of Simmelian ties of each node.
Input network(s): agent_agent
Rank Agent Value Unscaled 1 73 0.148 40.000 2 81 0.130 35.000 3 219 0.089 24.000 4 220 0.089 24.000 5 1 0.074 20.000 6 213 0.070 19.000 7 214 0.070 19.000 8 215 0.070 19.000 9 216 0.070 19.000 10 217 0.070 19.000 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): agent_agent
Rank Agent Value 1 12 1.000 2 18 1.000 3 19 1.000 4 23 1.000 5 24 1.000 6 28 1.000 7 30 1.000 8 32 1.000 9 34 1.000 10 35 1.000
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 15 15 0 0 1 15 1 1 2 0 246 15 15 15 246 15 15 3 1 0 58 58 0 0 0 0 4 246 13 39 39 50 13 50 50 5 13 58 1 1 11 58 11 11 6 11 263 120 81 25 263 25 25 7 5 108 246 46 13 108 13 13 8 2 116 121 73 5 116 5 5 9 50 142 159 120 3 142 3 3 10 12 143 70 219 81 143 81 81