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http://dx.doi.org/10.5351/CKSS.2007.14.3.517

Modelling on Multi-modal Circular Data using von Mises Mixture Distribution  

Jang, Young-Mi (Korea Center for Disease Control & Prevention)
Yang, Dong-Yoon (Korea Institute of Geoscience & Mineral Resources)
Lee, Jin-Young (Korea Institute of Geoscience & Mineral Resources)
Na, Jong-Hwa (Department of Information & Statistics, Chungbuk National University)
Publication Information
Communications for Statistical Applications and Methods / v.14, no.3, 2007 , pp. 517-530 More about this Journal
Abstract
We studied a modelling process for unimodal and multimodal circular data by using von Mises and its mixture distribution. In particular we suggested EM algorithm to find ML estimates of the mixture model. Simulation results showed the suggested methods are very accurate. Applications to two kinds of real data sets are also included.
Keywords
Circular data; EM algorithm; von Mises distribution; mixture model;
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