Σύγκριση μεθόδων

	Κανονικοποιημένη Αμοιβαία Πληροφορία	Συντελεστής Σιλουέτας
Πεδίο	Αξιολόγηση Μοντέλων	Αξιολόγηση Μοντέλων
Οικογένεια	MCDM	MCDM
Έτος προέλευσης	2005	1987
Δημιουργός	Danon, Diaz-Guilera, Duch, Arenas	Peter Rousseeuw
Τύπος	Information-theoretic metric	Cluster quality metric
Θεμελιώδης πηγή	Danon, L., Diaz-Guilera, A., Duch, J., & Arenas, A. (2005). Comparing community structure identification. Journal of Statistical Mechanics: Theory and Experiment, 2005(09), P09008.	Rousseeuw, P. J. (1987). Silhouettes: a graphical aid to the interpretation and validation of cluster analysis. Journal of Computational and Applied Mathematics, 20, 53-65.
Εναλλακτικές ονομασίες	NMI, mutual information, information criterion	silhouette coefficient, silhouette index
Συναφείς	5	5
Σύνοψη	Normalized Mutual Information (NMI), popularized by Danon et al. in 2005, is an external clustering evaluation metric based on information theory. It measures the amount of information shared between a predicted clustering and ground truth labels, normalized to a scale between 0 and 1. A value of 1 indicates perfect agreement, while 0 indicates independence.	The Silhouette Coefficient, introduced by Peter Rousseeuw in 1987, is a metric that measures how similar an object is to its own cluster compared to other clusters. It ranges from -1 to 1, where values close to 1 indicate well-separated and cohesive clusters, values near 0 suggest overlapping clusters, and negative values indicate misclustered points.