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Modeling Investment Trends: A Logarithmic-Modified Markov Chain Approach
Springer Science and Business Media LLC - Tập 19 - Trang 439-445 - 2020
Imoh Udo Moffat, James Augustine Ukpabio, Emmanuel Alphonsus Akpan
The study aimed at stabilizing the changing variance using the logarithmic transformation to achieve a significant proportion of stability and a faster rate of convergence of the steady state transition probability in Markov chains. The traditional Markov chain and logarithmic-modified Markov chain were considered. On exploring the yearly data on the stock prices from 2015 to 2018 as obtained from... hiện toàn bộ
A Multivariate Skew-Normal Mean-Variance Mixture Distribution and Its Application to Environmental Data with Outlying Observations
Springer Science and Business Media LLC - Tập 18 - Trang 244-258 - 2019
M. Tamandi, N. Balakrishnan, A. Jamalizadeh, M. Amiri
The presence of outliers, skewness, kurtosis, and dependency are well-known challenges while fitting distributions to many data sets. Developing multivariate distributions that can properly accomodate all these aspects has been the aim of several researchers. In this regard, we introduce here a new multivariate skew-normal mean-variance mixture based on Birnbaum-Saunders distribution. The resultin... hiện toàn bộ
The Kumaraswamy Pareto distribution
Springer Science and Business Media LLC - Tập 12 - Trang 129-144 - 2013
Marcelo Bourguignon, Rodrigo B. Silva, Luz M. Zea, Gauss M. Cordeiro
The modeling and analysis of lifetimes is an important aspect of statistical work in a wide variety of scientific and technological fields. For the first time, the called Kumaraswamy Pareto distribution, is introduced and studied. The new distribution can have a decreasing and upside-down bathtub failure rate function depending on the values of its parameters. It includes as special sub-models the... hiện toàn bộ
Dynamic Cumulative Residual and Past Inaccuracy Measures
Springer Science and Business Media LLC - Tập 14 - Trang 399-412 - 2015
Vikas Kumar, H. C. Taneja
In this paper, we have developed measures of dynamic cumulative residual and past inaccuracy. We have studied characterization results under proportional hazard model in case of dynamic cumulative residual inaccuracy and under proportional reversed hazard model in case of dynamic cumulative past inaccuracy measure. We have characterized certain specific lifetime distributions using the measures pr... hiện toàn bộ
Three Characterizations of Exponential Distribution Involving Median of Sample of Size Three
Springer Science and Business Media LLC - Tập 14 - Trang 257-264 - 2015
Marko Obradović
In this paper three new characterizing theorems of exponential distribution are presented. They are based on equidistribution of some functions of order statistics. All of them include the median of sample of size three.
Record Ranges for Samples From Asymmetrical Laplace Distributions
Springer Science and Business Media LLC - Tập 17 - Trang 206-212 - 2018
I. V. Belkov, M. Ahsanullah, V. B. Nevzorov
The representations of record ranges via sums of independent identically distributed exponential random variables are obtained for asymmetrical Laplace distributions. This result generalizes the corresponding relations for record values in the cases of exponential and negative exponential distributions
Measure of Departure from Marginal Homogeneity for the Analysis of Collapsed Square Contingency Tables with Ordered Categories
Springer Science and Business Media LLC - Tập 19 - Trang 212-222 - 2020
Kouji Yamamoto, Itsumi Iwama, Sadao Tomizawa
For square contingency tables with ordered categories, there would be some situations that one would like to analyze them by using collapsed 3 ×3 tables combining some adjacent categories in the original table. This paper considers the marginal homogeneity for collapsed tables and proposes a measure which represents the degree of departure from the marginal homogeneity. The proposed measure lies b... hiện toàn bộ
Modified Clopper-Pearson Confidence Interval for Binomial Proportion
Springer Science and Business Media LLC - Tập 13 - Trang 296-310 - 2014
Desale Habtzghi, Chand K. Midha, Ashish Das
We introduce expected coverage probability as a measure for constructing confidence intervals for the binomial proportion, π. We propose a model based confidence interval for π using the expected coverage probabilities of the Clopper-Pearson interval. The method provides intervals comparable or better than the alternative intervals, such as the Wilson, Agresti-Coull and Jeffreys intervals.
Behavior of OC Curve of Generalized Exponentiated Data
Springer Science and Business Media LLC - Tập 19 - Trang 332-341 - 2020
Anwar Hassan, Mehraj Ahmad, Najmus Saquib Hassan
In this paper a generalized exponential distribution is considered for analyzing left-censored lifetime data as such mechanisms are applicable when the observations become available in an ordered manner with some cases where the origin and the event both occur prior to the start of follow-up. In the present study a test procedure is developed which will approximate a prescribed operating character... hiện toàn bộ
Interval-Valued Uncertainty Based on Entropy and Dempster-Shafer Theory
Springer Science and Business Media LLC - Tập 17 - Trang 627-635 - 2018
F. Khalaj, E. Pasha, R. Tavakkoli-Moghaddam, M. Khalaj
This paper presents a new structure as a simple method at two uncertainties (i.e., aleatory and epistemic) that result from variabilities inherent in nature and a lack of knowledge. Aleatory and epistemic uncertainties use the concept of the entropy and Dempster-Shafer (D-S) theory, respectively. Accordingly, we propose the generalized Shannon entropy in the D-S theory as a measure of uncertainty.... hiện toàn bộ
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