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| Irányított Tudásgráf Elemzés× | A node szerepének mérése a hálózatban: Köztes szerep (Betweenness Centrality)× | |
|---|---|---|
| Tudományterület | Hálózatelemzés | Hálózatelemzés |
| Módszercsalád | Machine learning | Machine learning |
| Keletkezés éve≠ | 2000s–2010s | 1977 |
| Megalkotó≠ | Hogan, A. et al. (formalized); roots in Berners-Lee, T. et al. (Semantic Web) | Freeman, L. C. |
| Típus≠ | Graph-based knowledge representation and inference | Centrality measure |
| Alapmű≠ | Hogan, A., Blomqvist, E., Cochez, M., d'Amato, C., Melo, G. D., Gutierrez, C., ... & Polleres, A. (2021). Knowledge graphs. ACM Computing Surveys, 54(4), 1–37. DOI ↗ | Freeman, L. C. (1977). A set of measures of centrality based on betweenness. Sociometry, 40(1), 35–41. DOI ↗ |
| Alternatív nevek | directed KG analysis, knowledge graph mining, directed semantic graph analysis, KG reasoning | Freeman betweenness, BC, geodesic betweenness, shortest-path betweenness |
| Kapcsolódó | 6 | 6 |
| Összefoglaló≠ | Directed Knowledge Graph Analysis represents factual knowledge as a directed labeled multigraph of entities (nodes) and typed relations (directed edges), enabling structured reasoning, inference, and discovery over large heterogeneous datasets. The direction of edges encodes asymmetric relationships such as 'authored-by', 'causes', or 'is-a', making the graph semantically richer than undirected alternatives. | 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. |
| ScholarGateAdatkészlet ↗ |
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