- Author
- Korzeniewski Jerzy (Uniwersytet Łódzki)
- Title
- Propozycja nowego algorytmu wyznaczającego liczbę skupień
Proposal of New Algorithm for Determining the Number of Clusters - Source
- Prace Naukowe Akademii Ekonomicznej we Wrocławiu. Taksonomia (12), 2005, nr 1076, s. 257-264, rys., bibliogr. 2 poz.
- Issue title
- Klasyfikacja i analiza danych - teoria i zastosowania
- Keyword
- Algorytmy
Algorithms - Note
- summ.
- Abstract
- W algorytmie prezentowanym w artykule jest wykorzystywana metoda średniego przesunięcia oszacowań maksimów lokalnych funkcji gęstości wektora losowego, zaproponowana przez Comaniciu i Meera. (fragment tekstu)
The new algorithm is based on the comparison of pseudo cumulative distribution functions of a certain random variable. This variable is defined as follows. For a fixed window size we draw k different points and for every point we find the corresponding limiting point in the mean shift procedure. Then we check if the distance (e.g. Euclidean) between every pair of the limiting points is smaller than the window size. The probability of meeting this condition is the value of the pseudo cumulative distribution function at the point equal to the window size. Analogously we determine the pseudo cumulative distribution functions for different numbers k of clusters. The proper number of clusters is the one that corresponds to the last (with respect to k) curve to possess a horizontal phase at the altitude smaller than 1. (original abstract) - Accessibility
- The Main Library of the Cracow University of Economics
The Library of Warsaw School of Economics
The Main Library of Poznań University of Economics and Business - Full text
- Show
- Bibliography
-
- Gordon A.D., Classification, Chapman & Hall 1999.
- Comaniciu D., Meer P., Mean Shift Analysis and Applications, IEEE Int. Conf. Computer Vision (ICCV'99), Kerkyra, Greece, 1999, s. 1197-1203.
- Cited by
- ISSN
- 0324-8445
1505-9332 - Language
- pol
