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- Title
A two-level directional model for dependence in circular data.
- Authors
Holmquist, Björn; Gustafsson, Peter
- Abstract
We present a likelihood-based test for clustering among sub-population mean directions for circular data. The test is based on a two-level hierarchical model with von Mises distributed variation on each level. The properties of the tests are investigated and compared to the commonly applied techniques of second-order analysis and pseudo-pooling of directions for the situation at hand. Finally we apply the technique to some previously published data sets, to determine the presence of directional clustering among the sub-populations. The Canadian Journal of Statistics 45: 461-478; 2017 © 2017 Statistical Society of Canada
- Subjects
CIRCULAR data; DISTRIBUTION (Probability theory); STATISTICAL models; HIERARCHICAL clustering (Cluster analysis); POPULATION statistics
- Publication
Canadian Journal of Statistics, 2017, Vol 45, Issue 4, p461
- ISSN
0319-5724
- Publication type
Article
- DOI
10.1002/cjs.11345