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| Ανίχνευση Κοινοτήτων με Βαρύτητα× | Ανίχνευση Κοινοτήτων× | |
|---|---|---|
| Πεδίο | Ανάλυση Δικτύων | Ανάλυση Δικτύων |
| Οικογένεια≠ | Machine learning | Process / pipeline |
| Έτος προέλευσης≠ | 2004–2008 | 2002–2019 (algorithm family) |
| Δημιουργός≠ | Newman, M. E. J.; Blondel et al. | Louvain: Blondel et al. (2008); Leiden: Traag et al. (2019); Girvan-Newman: Girvan & Newman (2002); Infomap: Rosvall & Bergstrom (2008) |
| Τύπος≠ | Graph clustering / community detection | Graph-partitioning / clustering algorithm family |
| Θεμελιώδης πηγή≠ | Blondel, V. D., Guillaume, J.-L., Lambiotte, R., & Lefebvre, E. (2008). Fast unfolding of communities in large networks. Journal of Statistical Mechanics: Theory and Experiment, 2008(10), P10008. DOI ↗ | Blondel, V.D., Guillaume, J.-L., Lambiotte, R. & Lefebvre, E. (2008). Fast Unfolding of Communities in Large Networks. Journal of Statistical Mechanics, 2008(10), P10008. DOI ↗ |
| Εναλλακτικές ονομασίες≠ | weighted graph clustering, community detection on weighted networks, weighted modularity optimization, WCD | graph clustering, network partitioning, Topluluk Tespiti (Louvain, Girvan-Newman, Leiden) |
| Συναφείς≠ | 6 | 5 |
| Σύνοψη≠ | Weighted community detection identifies densely connected groups — communities — in networks where edges carry numeric strengths (weights). By incorporating edge weights into the modularity function, it reveals structure that binary adjacency alone would miss: two nodes connected by a strong tie are treated as more similar than two nodes linked by a weak one. The Louvain algorithm is the dominant practical implementation. | Community detection is a family of graph-partitioning algorithms that discover densely connected sub-groups — communities — within a network. First formalised through the modularity measure by Girvan and Newman (2002), the field advanced rapidly with the Louvain method (Blondel et al., 2008), the Leiden refinement (Traag et al., 2019), and the information-theoretic Infomap approach. All variants answer the same question: which nodes cluster together more tightly among themselves than with the rest of the network? |
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