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| Gradzentralität× | Modularitätsanalyse× | |
|---|---|---|
| Fachgebiet | Netzwerkanalyse | Netzwerkanalyse |
| Familie | Machine learning | Machine learning |
| Entstehungsjahr≠ | 1978 | 2004 |
| Urheber≠ | Freeman, L. C. | Newman, M. E. J. & Girvan, M. |
| Typ≠ | Node-level centrality measure | Community detection / graph partitioning |
| Wegweisende Quelle≠ | Freeman, L. C. (1978). Centrality in social networks: Conceptual clarification. Social Networks, 1(3), 215–239. DOI ↗ | Newman, M. E. J., & Girvan, M. (2004). Finding and evaluating community structure in networks. Physical Review E, 69(2), 026113. DOI ↗ |
| Aliasnamen | node degree, degree score, DC, connectivity centrality | Q-modularity, community structure detection, network modularity optimization, graph partitioning by modularity |
| Verwandt≠ | 6 | 5 |
| Zusammenfassung≠ | Degree centrality is the simplest and most intuitive measure of a node's importance in a network, defined as the number of direct ties a node has to other nodes. Normalized by dividing by the maximum possible ties, it allows comparison across networks of different sizes and is the starting point of almost every network analysis. | Modularity analysis is a network science method, formalized by Newman and Girvan in 2004, that detects community structure in graphs by measuring whether edges are more concentrated within groups than expected by chance. Its scalar quality index Q guides algorithms that partition nodes into cohesive clusters, making it the most widely adopted framework for community detection in social, biological, and technological networks. |
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