A New Efficient Approximation for Concentration Parameter of Circular Data

New and efficient approximations of the concentration parameter of circular data using two approaches are proposed in this paper. First, we consider the power series expansion of mean resultant length and the estimate of concentration parameter may be obtained by the roots of the polynomial function...

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Main Authors: Siti Zabariah Satari", Abdul Ghapor Hussin, Yang Zulina Zubairi
Language:English
Published: Science Faculty of Chiang Mai University 2019
Subjects:
Online Access:http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=5774
http://cmuir.cmu.ac.th/jspui/handle/6653943832/66824
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-668242019-09-17T08:55:04Z A New Efficient Approximation for Concentration Parameter of Circular Data Siti Zabariah Satari" Abdul Ghapor Hussin Yang Zulina Zubairi Mean resultant length concentration parameter modified Bessel function von Mises distribution maximum likelihood estimator New and efficient approximations of the concentration parameter of circular data using two approaches are proposed in this paper. First, we consider the power series expansion of mean resultant length and the estimate of concentration parameter may be obtained by the roots of the polynomial function. Secondly, we consider the power series expansion of the reciprocal of a Bessel function in the log-likelihood function of the concentration parameter and the estimate of concentration parameter may be obtained by minimizing the negative value of the log-likelihood function. It is found that the new approximation solutions are more efficient compared to the other existing approximation solutions especially for large . 2019-09-17T08:55:04Z 2019-09-17T08:55:04Z 2015 Chiang Mai Journal of Science 42, 2 (April 2015), 528 - 537 0125-2526 http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=5774 http://cmuir.cmu.ac.th/jspui/handle/6653943832/66824 Eng Science Faculty of Chiang Mai University
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
topic Mean resultant length
concentration parameter
modified Bessel function
von Mises distribution
maximum likelihood estimator
spellingShingle Mean resultant length
concentration parameter
modified Bessel function
von Mises distribution
maximum likelihood estimator
Siti Zabariah Satari"
Abdul Ghapor Hussin
Yang Zulina Zubairi
A New Efficient Approximation for Concentration Parameter of Circular Data
description New and efficient approximations of the concentration parameter of circular data using two approaches are proposed in this paper. First, we consider the power series expansion of mean resultant length and the estimate of concentration parameter may be obtained by the roots of the polynomial function. Secondly, we consider the power series expansion of the reciprocal of a Bessel function in the log-likelihood function of the concentration parameter and the estimate of concentration parameter may be obtained by minimizing the negative value of the log-likelihood function. It is found that the new approximation solutions are more efficient compared to the other existing approximation solutions especially for large .
author Siti Zabariah Satari"
Abdul Ghapor Hussin
Yang Zulina Zubairi
author_facet Siti Zabariah Satari"
Abdul Ghapor Hussin
Yang Zulina Zubairi
author_sort Siti Zabariah Satari"
title A New Efficient Approximation for Concentration Parameter of Circular Data
title_short A New Efficient Approximation for Concentration Parameter of Circular Data
title_full A New Efficient Approximation for Concentration Parameter of Circular Data
title_fullStr A New Efficient Approximation for Concentration Parameter of Circular Data
title_full_unstemmed A New Efficient Approximation for Concentration Parameter of Circular Data
title_sort new efficient approximation for concentration parameter of circular data
publisher Science Faculty of Chiang Mai University
publishDate 2019
url http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=5774
http://cmuir.cmu.ac.th/jspui/handle/6653943832/66824
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