Network Level Measures
Measure Value Row count 21.000 Column count 21.000 Link count 144.000 Density 0.343 Components of 1 node (isolates) 0 Components of 2 nodes (dyadic isolates) 0 Components of 3 or more nodes 1 Reciprocity 0.500 Characteristic path length 1.715 Clustering coefficient 0.643 Network levels (diameter) 3.000 Network fragmentation 0.000 Krackhardt connectedness 1.000 Krackhardt efficiency 0.600 Krackhardt hierarchy 0.095 Krackhardt upperboundedness 1.000 Degree centralization 0.561 Betweenness centralization 0.220 Closeness centralization 0.199 Eigenvector centralization 0.240 Reciprocal (symmetric)? No (50% of the links are reciprocal)
Node Level Measures
Measure Min Max Avg Stddev Total degree centrality 0.050 0.850 0.343 0.195 Total degree centrality [Unscaled] 2.000 34.000 13.714 7.784 In-degree centrality 0.000 0.850 0.343 0.223 In-degree centrality [Unscaled] 0.000 17.000 6.857 4.465 Out-degree centrality 0.100 0.850 0.343 0.208 Out-degree centrality [Unscaled] 2.000 17.000 6.857 4.155 Eigenvector centrality 0.055 0.502 0.286 0.117 Eigenvector centrality [Unscaled] 0.039 0.355 0.202 0.083 Eigenvector centrality per component 0.039 0.355 0.202 0.083 Closeness centrality 0.286 0.476 0.384 0.041 Closeness centrality [Unscaled] 0.014 0.024 0.019 0.002 In-Closeness centrality 0.048 0.870 0.572 0.155 In-Closeness centrality [Unscaled] 0.002 0.043 0.029 0.008 Betweenness centrality 0.000 0.246 0.036 0.070 Betweenness centrality [Unscaled] 0.000 93.319 13.619 26.519 Hub centrality 0.048 0.546 0.277 0.135 Authority centrality 0.000 0.557 0.271 0.148 Information centrality 0.025 0.069 0.048 0.013 Information centrality [Unscaled] 1.405 3.890 2.669 0.702 Clique membership count 1.000 19.000 5.429 4.836 Simmelian ties 0.000 0.850 0.224 0.200 Simmelian ties [Unscaled] 0.000 17.000 4.476 4.007 Clustering coefficient 0.322 1.000 0.643 0.193
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#18 (size: 21, density: 0.342857)
Rank Agent Value Unscaled Context* 1 18 0.850 34.000 4.896 2 2 0.800 32.000 4.413 3 14 0.575 23.000 2.241 4 11 0.450 18.000 1.034 5 7 0.400 16.000 0.552 6 21 0.400 16.000 0.552 7 10 0.375 15.000 0.310 8 19 0.375 15.000 0.310 9 20 0.375 15.000 0.310 10 3 0.300 12.000 -0.414 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.343 Mean in random network: 0.343 Std.dev: 0.195 Std.dev in random network: 0.104 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#18
Rank Agent Value Unscaled 1 18 0.850 17.000 2 2 0.750 15.000 3 11 0.650 13.000 4 14 0.600 12.000 5 10 0.550 11.000 6 21 0.500 10.000 7 7 0.450 9.000 8 1 0.300 6.000 9 5 0.300 6.000 10 9 0.300 6.000 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#18
Rank Agent Value Unscaled 1 2 0.850 17.000 2 18 0.850 17.000 3 14 0.550 11.000 4 20 0.500 10.000 5 13 0.450 9.000 6 19 0.450 9.000 7 3 0.400 8.000 8 4 0.350 7.000 9 7 0.350 7.000 10 8 0.350 7.000 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#18 (size: 21, density: 0.342857)
Rank Agent Value Unscaled Context* 1 2 0.502 0.355 -0.401 2 18 0.483 0.342 -0.470 3 14 0.410 0.290 -0.736 4 11 0.409 0.289 -0.740 5 20 0.384 0.272 -0.828 6 19 0.359 0.254 -0.920 7 10 0.357 0.253 -0.925 8 13 0.345 0.244 -0.969 9 7 0.334 0.236 -1.008 10 3 0.300 0.212 -1.133 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.286 Mean in random network: 0.613 Std.dev: 0.117 Std.dev in random network: 0.277 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#18
Rank Agent Value 1 2 0.355 2 18 0.342 3 14 0.290 4 11 0.289 5 20 0.272 6 19 0.254 7 10 0.253 8 13 0.244 9 7 0.236 10 3 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#18 (size: 21, density: 0.342857)
Rank Agent Value Unscaled Context* 1 2 0.476 0.024 -2.292 2 18 0.476 0.024 -2.292 3 14 0.417 0.021 -3.351 4 17 0.408 0.020 -3.502 5 20 0.408 0.020 -3.502 6 19 0.400 0.020 -3.648 7 3 0.392 0.020 -3.787 8 13 0.392 0.020 -3.787 9 4 0.385 0.019 -3.921 10 7 0.385 0.019 -3.921 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.384 Mean in random network: 0.605 Std.dev: 0.041 Std.dev in random network: 0.056 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#18
Rank Agent Value Unscaled 1 18 0.870 0.043 2 2 0.800 0.040 3 11 0.714 0.036 4 14 0.714 0.036 5 21 0.667 0.033 6 7 0.645 0.032 7 10 0.645 0.032 8 1 0.556 0.028 9 5 0.556 0.028 10 9 0.556 0.028 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#18 (size: 21, density: 0.342857)
Rank Agent Value Unscaled Context* 1 18 0.246 93.319 7.513 2 2 0.236 89.543 7.138 3 21 0.076 28.892 1.116 4 14 0.064 24.440 0.674 5 7 0.052 19.632 0.197 6 11 0.017 6.420 -1.115 7 6 0.012 4.583 -1.297 8 10 0.011 4.333 -1.322 9 20 0.011 4.123 -1.343 10 19 0.008 3.193 -1.435 * Number of standard deviations from the mean of a random network of the same size and density
Mean: 0.036 Mean in random network: 0.046 Std.dev: 0.070 Std.dev in random network: 0.027 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#18
Rank Agent Value 1 18 0.546 2 2 0.536 3 14 0.435 4 20 0.424 5 19 0.375 6 13 0.373 7 3 0.361 8 8 0.318 9 4 0.314 10 7 0.295 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#18
Rank Agent Value 1 18 0.557 2 11 0.502 3 2 0.495 4 10 0.457 5 14 0.435 6 21 0.346 7 7 0.332 8 5 0.298 9 9 0.298 10 19 0.281 Information centrality
Calculate the Stephenson and Zelen information centrality measure for each node.
Input network(s): ACTOR#18
Rank Agent Value Unscaled 1 2 0.069 3.890 2 18 0.068 3.832 3 14 0.061 3.412 4 20 0.060 3.369 5 13 0.058 3.251 6 19 0.058 3.249 7 3 0.055 3.091 8 7 0.053 2.988 9 8 0.053 2.962 10 4 0.052 2.928 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#18
Rank Agent Value 1 2 19.000 2 18 18.000 3 11 9.000 4 14 8.000 5 7 7.000 6 20 6.000 7 3 5.000 8 4 5.000 9 10 5.000 10 19 5.000 Simmelian ties
The normalized number of Simmelian ties of each node.
Input network(s): ACTOR#18
Rank Agent Value Unscaled 1 18 0.850 17.000 2 2 0.650 13.000 3 14 0.500 10.000 4 1 0.250 5.000 5 11 0.250 5.000 6 21 0.250 5.000 7 7 0.200 4.000 8 10 0.200 4.000 9 16 0.200 4.000 10 19 0.200 4.000 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#18
Rank Agent Value 1 17 1.000 2 12 0.917 3 15 0.900 4 6 0.833 5 9 0.833 6 5 0.810 7 16 0.767 8 1 0.733 9 8 0.690 10 3 0.653
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 18 2 2 2 18 18 2 18 2 2 18 18 18 2 2 18 2 3 21 14 14 14 11 11 14 14 4 14 17 11 11 14 14 20 11 5 7 20 20 20 10 21 13 7 6 11 19 19 19 21 7 19 21 7 6 3 10 10 7 10 3 10 8 10 13 13 13 1 1 4 19 9 20 4 7 7 5 5 7 20 10 19 7 3 3 9 9 8 3