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Open Access
Article
Publication date: 31 December 2018

Khuram Ali Khan, Tasadduq Niaz, Đilda Pečarić and Josip Pečarić

In this work, we estimated the different entropies like Shannon entropy, Rényi divergences, Csiszár divergence by using Jensen’s type functionals. The Zipf’s–Mandelbrot law and

Abstract

In this work, we estimated the different entropies like Shannon entropy, Rényi divergences, Csiszár divergence by using Jensen’s type functionals. The Zipf’s–Mandelbrot law and hybrid Zipf’s–Mandelbrot law are used to estimate the Shannon entropy. The Abel–Gontscharoff Green functions and Fink’s Identity are used to construct new inequalities and generalized them for m-convex function.

Details

Arab Journal of Mathematical Sciences, vol. 26 no. 1/2
Type: Research Article
ISSN: 1319-5166

Keywords

Article
Publication date: 1 June 1997

M.L. Menéndez, J.A. Pardo, L. Pardo and M.C. Pardo

Read (1984) presented an asymptotic expansion for the distribution function of the power divergence statistics whose speed of convergence is dependent on the parameter of the…

4074

Abstract

Read (1984) presented an asymptotic expansion for the distribution function of the power divergence statistics whose speed of convergence is dependent on the parameter of the family. Generalizes that result by considering the family of (h, φ)‐divergence measures. Considers two other closer approximations to the exact distribution. Compares these three approximations for the Renyi’s statistic in small samples.

Details

Kybernetes, vol. 26 no. 4
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 19 June 2007

Julio Angel Pardo and María del Carmen Pardo

To provide a new family of test statistics to solve the Behrens‐Fisher problem and to compare it with the classic test statistics through a different simulation studies.

989

Abstract

Purpose

To provide a new family of test statistics to solve the Behrens‐Fisher problem and to compare it with the classic test statistics through a different simulation studies.

Design/methodology/approach

A general procedure for testing composite hypothesis to k samples of different size problems on the basis of the Renyi's divergence is used to develop a new parametric family of test statistics that contains as a particular case the classical likelihood ratio test. The scope of the paper is to find out if some member of the new family of test statistics it is preferable to the classical ones.

Findings

Some members of the new parametric family of test statistics behave remarkably well in comparison to the classic ones, as the different computational studies reveal.

Originality/value

This paper offers a new way to solve the Behrens‐Fisher problem that it is preferable in some cases to the known procedures.

Details

Kybernetes, vol. 36 no. 5/6
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 April 1990

Guy Jumarie

By combining the subjective probabilistic viewpoint of fuzziness with the entropy of deterministic functions, it is possible to expand an information theory of fuzzy sets which is…

Abstract

By combining the subjective probabilistic viewpoint of fuzziness with the entropy of deterministic functions, it is possible to expand an information theory of fuzzy sets which is fully compatible and consistent with the classical Shannonian information theoretic framework. A model of transinformation between fuzzy sets, which could be of help in approximate reasoning can be obtained, an interesting feature of which is that it can be duplicated in the framework of fuzzy set theory.

Details

Kybernetes, vol. 19 no. 4
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 November 1999

A. Alonso, Esteban and D. Morales

Methods of testing simple hypotheses about lifetime parameters from doubly censored data are given on the basis of the maximum likelihood principle. It is shown that, under the…

1200

Abstract

Methods of testing simple hypotheses about lifetime parameters from doubly censored data are given on the basis of the maximum likelihood principle. It is shown that, under the assumptions of standard type, the asymptotic distribution of proposed statistics is chi‐square or linear combination of chi‐square distributions. The choice of statistics optimal from the point of view of power is discussed and illustrated by several examples.

Details

Kybernetes, vol. 28 no. 8
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 February 1995

Esteban, J.A. Pardo, M.C. Pardo and M.L. Vicente

Several coefficients, called divergences, have been suggested in the statistical literature to reflect the fact that some probability distributions are “closer together” than…

537

Abstract

Several coefficients, called divergences, have been suggested in the statistical literature to reflect the fact that some probability distributions are “closer together” than others and consequently that it may be easier to distinguish between the distributions of one pair than between those of another. When comparing three biological populations, it is often interesting to measure how two of them “move apart” from the third. Deals with the statistical analysis of this problem by means of bivariate divergence statistics. Provides a unified study, depicting the behaviour and relative merits of traditional divergences, by using the (h,ø), divergence family of statistics introduced by Menéndez et al.

Details

Kybernetes, vol. 24 no. 1
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 December 2003

T. Pérez and J.A. Pardo

Goodness‐of‐fit test based on Kϕdivergence between observed and theoretical frequencies are considered. The asymptotic chi‐square null distribution and three alternative…

Abstract

Goodness‐of‐fit test based on Kϕdivergence between observed and theoretical frequencies are considered. The asymptotic chi‐square null distribution and three alternative approximations to the exact distribution function of this family are compared in small samples. Numerical results are presented for the symmetric null hypothesis for different multinomial sample sizes with various cell numbers. Exact power under specific alternatives to the symmetric null hypothesis are calculated and a comparison with the family of power divergence statistics is made.

Details

Kybernetes, vol. 32 no. 9/10
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 October 1996

Guy Jumarie

Surveys some of the important contributions of information theory (IT) to the understanding of systems science and cybernetics. Presents a short background on the main definitions…

Abstract

Surveys some of the important contributions of information theory (IT) to the understanding of systems science and cybernetics. Presents a short background on the main definitions of IT, and examines in which way IT could be thought of as a unified approach to general systems. Analyses the topics: syntax and semantics in information, information and self‐organization, entropy of forms (entropy of non‐random functions), and information in dynamical systems. Enumerates some suggestions for further research and takes this opportunity to describe new points of view, mainly by using entropy of non‐random functions.

Details

Kybernetes, vol. 25 no. 7/8
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 October 2004

E. Landaburu and L. Pardo

Weighted (h,φ) – divergence statistics are obtained by either replacing both distributions involved in the argument by their nonparametric estimators or replacing one distribution…

Abstract

Weighted (h,φ) – divergence statistics are obtained by either replacing both distributions involved in the argument by their nonparametric estimators or replacing one distribution and considering the other as given. Asymptotic properties of weighted (h,φ) – divergence statistics are obtained and some tests constructed on the basis of these results are presented.

Details

Kybernetes, vol. 33 no. 9/10
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 1 June 2006

E. Landaburu and L. Pardo

Proposes a test of goodness‐of‐fit with composite null hypotheses and weights in the classes based on weighted (h,φ)‐divergences.

Abstract

Purpose

Proposes a test of goodness‐of‐fit with composite null hypotheses and weights in the classes based on weighted (h,φ)‐divergences.

Design/methodology/approach

The weighted (h,φ)‐divergence between an empirical distribution and the probability of the estimated model is here investigated for large simple random samples.

Findings

The unknown parameters of the model are estimated using minimum (h,φ)‐divergences estimators with weights as studied in previous works by the authors.

Originality/value

Research makes an important contribution to (h,φ)‐divergences and their applications in statistical and other areas.

Details

Kybernetes, vol. 35 no. 5
Type: Research Article
ISSN: 0368-492X

Keywords

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