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Web Influence

Metrics (Measures) in social network analysis (Part 2)

Individual-level Density
The degree a respondent’s ties know one another/ proportion of ties among an individual’s nominees. Network or global-level density is the proportion of ties in a network relative to the total number possible (sparse versus dense networks).

Flow betweenness centrality
The degree that a node contributes to sum of maximum flow between all pairs of nodes (not that node).

Eigenvector centrality
A measure of the importance of a node in a network. It assigns relative scores to all nodes in the network based on the principle that connections to nodes having a high score contribute more to the score of the node in question.

Local Bridge
An edge is a local bridge if its endpoints share no common neighbors. Unlike a bridge, a local bridge is contained in a cycle.

Path Length
The distances between pairs of nodes in the network. Average path-length is the average of these distances between all pairs of nodes.

Prestige
In a directed graph prestige is the term used to describe a node’s centrality. “Degree Prestige”, “Proximity Prestige”, and “Status Prestige” are all measures of Prestige.

Radiality
Degree an individual’s network reaches out into the network and provides novel information and influence.

Reach
The degree any member of a network can reach other members of the network.
Structural cohesion. The minimum number of members who, if removed from a group, would disconnect the group.

Structural equivalence
Refers to the extent to which nodes have a common set of linkages to other nodes in the system. The nodes don’t need to have any ties to each other to be structurally equivalent.
Structural hole Static holes that can be strategically filled by connecting one or more links to link together other points. Linked to ideas of social capital: if you link to two people who are not linked you can control their communication.

Category: internet, social media measurement, social network security, social networking

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