Σύγκριση μεθόδων

	Ανίχνευση Κοινοτήτων	Μοντέλο Εκθετικών Τυχαίων Γραφημάτων (ERGM / p*)	Πρόβλεψη Συνδέσεων
Πεδίο	Ανάλυση Δικτύων	Ανάλυση Δικτύων	Ανάλυση Δικτύων
Οικογένεια	Process / pipeline	Process / pipeline	Process / pipeline
Έτος προέλευσης	2002–2019 (algorithm family)	1986 (foundational); modern ERGM framework 1996–2007	2003
Δημιουργός	Louvain: Blondel et al. (2008); Leiden: Traag et al. (2019); Girvan-Newman: Girvan & Newman (2002); Infomap: Rosvall & Bergstrom (2008)	Frank & Strauss (1986); extended by Wasserman & Pattison (1996) and Robins et al. (2007)	—
Τύπος	Graph-partitioning / clustering algorithm family	Probabilistic generative network model	Network inference task
Θεμελιώδης πηγή	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.	Robins, G., Pattison, P., Kalish, Y., & Lusher, D. (2007). An introduction to exponential random graph (p*) models for social networks. Social Networks, 29(2), 173-191.	Liben-Nowell, D. & Kleinberg, J. (2007). The Link-Prediction Problem for Social Networks. Journal of the American Society for Information Science and Technology, 58(7), 1019-1031.
Εναλλακτικές ονομασίες	graph clustering, network partitioning, Topluluk Tespiti (Louvain, Girvan-Newman, Leiden)	ERGM, p-star model, p* model, Üstel Rastgele Graf Modeli (ERGM / p*)	Bağlantı Tahmini (Link Prediction), missing link prediction, future link prediction, edge prediction
Συναφείς	5	6	5
Σύνοψη	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?	The Exponential Random Graph Model (ERGM), also known as the p* model, is a statistical framework for network analysis that models the probability of an observed network as a function of its local structural features — such as reciprocity, triangles, and degree distribution. Developed from the foundational work of Frank and Strauss (1986) and extended into the modern framework by Wasserman and Pattison (1996) and Robins et al. (2007), ERGM is the inferential standard for social network analysis, capable of testing whether observed network structures arise by chance or reflect genuine social processes.	Link prediction is a network-analysis task that estimates which edges are missing from an observed graph or which edges are likely to form in the future. Formalised by Liben-Nowell and Kleinberg (2003, 2007), it covers a spectrum of approaches — from simple structural similarity indices such as Common Neighbors, Jaccard coefficient, and Adamic-Adar, to matrix factorisation, and graph neural network (GNN) methods — and is evaluated with AUC and Average Precision to account for the heavily imbalanced ratio of real to non-existing edges.