کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
417245 681474 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Automatic bandwidth selection for circular density estimation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
Automatic bandwidth selection for circular density estimation
چکیده انگلیسی

Given angular data θ1,…,θn∈[0,2π)θ1,…,θn∈[0,2π) a common objective is to estimate the density. In case that a kernel estimator is used, bandwidth selection is crucial to the performance. A “plug-in rule” for the bandwidth, which is based on the concentration of a reference density, namely, the von Mises distribution is obtained. It is seen that this is equivalent to the usual Euclidean plug-in rule in the case where the concentration becomes large. In case that the concentration parameter is unknown, alternative methods are explored which are intended to be robust to departures from the reference density. Simulations indicate that “wrapped estimators” can perform well in this context. The methods are applied to a real bivariate dataset concerning protein structure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Statistics & Data Analysis - Volume 52, Issue 7, 15 March 2008, Pages 3493–3500
نویسندگان
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