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	Modello Stocastico a Blocchi Pesato	Analisi ponderata delle reti sociali
Campo	Analisi delle reti	Analisi delle reti
Famiglia	Machine learning	Machine learning
Anno di origine	2014	2004–2010
Ideatore	Aicher, C.; Jacobs, A. Z.; Clauset, A.	Barrat, A.; Opsahl, T. et al.
Tipo	Generative probabilistic model	Network analysis framework
Fonte seminale	Aicher, C., Jacobs, A. Z., & Clauset, A. (2014). Learning latent block structure in weighted networks. Journal of Complex Networks, 3(2), 221–248.	Barrat, A., Barthélemy, M., Pastor-Satorras, R., & Vespignani, A. (2004). The architecture of complex weighted networks. Proceedings of the National Academy of Sciences, 101(11), 3747–3752.
Alias	W-SBM, weighted SBM, weighted block model, weighted community detection via SBM	Weighted SNA, valued network analysis, tie-strength network analysis, weighted graph analysis
Correlati	6	6
Sintesi	The Weighted Stochastic Block Model (W-SBM) extends the classical stochastic block model to networks whose edges carry numerical weights. By positing that edge weights between node pairs arise from distributions that depend on the block memberships of those nodes, it simultaneously infers a partition of nodes into communities and a set of block-to-block weight parameters — recovering structure invisible to unweighted methods.	Weighted Social Network Analysis extends classical SNA by assigning numeric values — weights — to ties between actors, capturing tie strength, interaction frequency, or resource flow. Rather than treating all connections as equal, it reveals who holds privileged positions by virtue of the intensity, not merely the existence, of their relationships.