Title :
Estimation of the dynamics of two-dimensional clusters
Author :
Casagrande, Daniele ; Sassano, M. ; Astolfi, Alessandro
Author_Institution :
Dipt. di Ing. Elettr., Gestionale e Meccanica, Univ. degli Studi di Udine, Udine, Italy
Abstract :
A method to estimate the dynamics of clusters is presented. An existing static clustering method, which makes use of a Hamiltonian function, is exploited in the dynamic case, when the points to cluster do not remain in fixed positions but move with unknown dynamics. The time is discretised and the static algorithm is applied to each time-instant. While identifying each cluster, the algorithm also performs the computation of the moments of the cluster. By estimating the dynamics of the moments an approximate estimation of the dynamics of the cluster is obtained. An illustrative example shows the performance of the method.
Keywords :
pattern clustering; Hamiltonian function; approximate estimation; two-dimensional cluster dynamic estimation; Astronomy; Clustering algorithms; Clustering methods; Consumer electronics; Data engineering; Educational institutions; Extraterrestrial measurements; Level set; Pattern recognition; Sea measurements;
Conference_Titel :
American Control Conference, 2009. ACC '09.
Conference_Location :
St. Louis, MO
Print_ISBN :
978-1-4244-4523-3
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2009.5160532
