Σύγκριση μεθόδων

	Εκτίμηση Πυκνότητας Πυρήνα Χώρου-Χρόνου (ST-KDE)	Χωροχρονικός Χωρικός Αυτοσυσχετισμός
Πεδίο	Χωρική Ανάλυση	Χωρική Ανάλυση
Οικογένεια	Regression model	Regression model
Έτος προέλευσης	2010 (space-time extension); 1956 (KDE origin)	1981–1992
Δημιουργός	Nakaya & Yano (space-time formulation); KDE foundation by Rosenblatt and Parzen	Cliff & Ord; extended by Anselin and others
Τύπος	Non-parametric density estimation	Spatial autocorrelation statistic
Θεμελιώδης πηγή	Nakaya, T., & Yano, K. (2010). Visualising crime clusters in a space-time cube: An exploratory data-analysis approach using space-time kernel density estimation and scan statistics. Transactions in GIS, 14(3), 223-239.	Clifford, P., Richardson, S., & Hemon, D. (1989). Assessing the significance of the correlation between two spatial processes. Biometrics, 45(1), 123–134.
Εναλλακτικές ονομασίες	ST-KDE, spatiotemporal kernel density estimation, space-time KDE, 3D kernel density estimation	STSA, spatiotemporal autocorrelation, space-time Moran's I, temporal spatial dependence
Συναφείς	5	5
Σύνοψη	Space-Time Kernel Density Estimation extends classical KDE into three dimensions — two spatial and one temporal — to reveal how the intensity of point events (crimes, accidents, disease cases) varies continuously across both geographic space and time. It produces a smooth probabilistic surface that highlights where and when events concentrate most densely.	Space-Time Spatial Autocorrelation extends classic spatial autocorrelation measures — most notably Moran's I — to data that vary across both geographic units and time periods. It detects whether nearby locations that are also temporally close tend to share similar attribute values, revealing clusters, trends, or anomalies that purely spatial or purely temporal analyses would miss.