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| Analisi delle Reti Sociali× | Centralità di intermediazione× | |
|---|---|---|
| Campo | Analisi delle reti | Analisi delle reti |
| Famiglia | Machine learning | Machine learning |
| Anno di origine≠ | 1934 (sociometry); 1994 (modern formalization) | 1977 |
| Ideatore≠ | Moreno, J.L.; formalized by Wasserman & Faust | Freeman, L. C. |
| Tipo≠ | Structural/relational analysis framework | Centrality measure |
| Fonte seminale≠ | Wasserman, S. & Faust, K. (1994). Social Network Analysis: Methods and Applications. Cambridge University Press. ISBN: 978-0-521-38707-1 | Freeman, L. C. (1977). A set of measures of centrality based on betweenness. Sociometry, 40(1), 35–41. DOI ↗ |
| Alias | SNA, network analysis, sociometric analysis, relational analysis | Freeman betweenness, BC, geodesic betweenness, shortest-path betweenness |
| Correlati≠ | 5 | 6 |
| Sintesi≠ | Social Network Analysis (SNA) is a structural method that maps and measures relationships and flows between people, groups, organizations, or other entities modeled as nodes connected by ties (edges). Rather than focusing on individual attributes, SNA reveals how the pattern of connections shapes behavior, influence, information flow, and outcomes within a system. | Betweenness centrality, formalized by Linton C. Freeman in 1977, measures how often a node lies on the shortest path connecting every other pair of nodes in a network. High-betweenness nodes act as bridges or brokers: removing them fragments the network into disconnected components more severely than removing any other nodes. |
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