Yazar "Şenoğlu, Birdal" için Makale Koleksiyonu listeleme
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Alpha-skew generalized t distribution [Distribución t generalizada alfa sesgada]
Acıtaş, Şükrü; Şenoğlu, Birdal; Arslan, Olcay (Universidad Nacional de Colombia, 2015)The alpha-skew normal (ASN) distribution has been proposed recently in the literature by using standard normal distribution and a skewing approach. Although ASN distribution is able to model both skew and bimodal data, it ... -
A comparative study for the location and scale parameters of the Weibull distribution with given shape parameter
Mert Kantar, Yeliz; Şenoğlu, Birdal (Pergamon-Elsevier Science LTD, 2008)Nine parametric estimators of the location and scale parameters of a two-parameter Weibull distribution are compared in terms of their bias and efficiency in a simulation study. The estimators considered are the maximum ... -
Comparison of certain value-at-risk estimation methods for the two-parameter Weibull loss distribution
Gebizlioğlu, Ömer L.; Şenoğlu, Birdal; Mert Kantar, Yeliz (Elsevier Science BV, 2011)The Weibull distribution is one of the most important distributions that is utilized as a probability model for loss amounts in connection with actuarial and financial risk management problems. This paper considers the ... -
Generalized Lindley and Power Lindley distributions for modeling the wind speed data
Arslan, Talha; Acıtaş, Şükrü; Şenoğlu, Birdal (Pergamon-Elsevier Science LTD, 2017)In this study, we propose to use Generalized Lindley (GL) and Power Lindley (PL) distributions as an alternative to the Weibull distribution for modeling the wind speed data. In the application part of the study, we consider ... -
Inferences on stress-strength reliability based on ranked set sampling data in case of Lindley distribution
Akgül, Fatma Gül; Acıtaş, Şükrü; Şenoğlu, Birdal (Taylor & Francis LTD, 2018)In this study, we consider point and interval estimation of stress-strength reliability R = P(X < Y) based on ranked set sampling when the distribution of the stress and the strength are both Lindley. Firstly, maximum ... -
Interval estimation of the system reliability for Weibull distribution based on ranked set sampling data
Akgül, Fatma Gül; Şenoğlu, Birdal; Acıtaş, Şükrü (Hacettepe University, Fac Sci, 2018)Inference for the system reliability R is one of the most popular problems in the areas of engineering, statistics, biostatistics and etc. Therefore, there exist considerable numbers of studies concerning this problem. ... -
A new approach for estimating the parameters of Weibull distribution via particle swarm optimization: An application to the strengths of glass fibre Cheek tor data
Acıtaş, Şükrü; Aladağ, Çağdaş Hakan; Şenoğlu, Birdal (Elsevier Sci LTD, 2019)Three-parameter Weibull is one of the most popular and most widely-used distribution in many fields of science. Therefore, many studies have been conducted concerning the statistical inferences of the parameters of Weibull ... -
One-step M-estimators: Jones and Faddy's skewed t-distribution
Acıtaş, Şükrü; Kasap, Pelin; Şenoğlu, Birdal; Arslan, Olcay (Taylor & Francis LTD, 2013)One-step M (OSM)-estimator needs some initial/preliminary estimates at the beginning of the calculation process. In this study, we propose to use new initial estimates for the calculation of the OSM-estimator. We consider ... -
Ridge-Type MML Estimator in the Linear Regression Model
Acıtaş, Şükrü; Şenoğlu, Birdal (Springer International Publishing Ag, 2019)Ridge regression is widely used to deal with the multicollinearity problem. However, traditional ridge estimator (Hoerl and Kennard 1970) loses its efficiency in the presence of outliers, since it is obtained based on least ... -
ROBUST 2(k) FACTORIAL DESIGNS: NON-NORMAL SYMMETRIC DISTRIBUTIONS
Şenoğlu, Birdal; Acıtaş, Şükrü; Kasap, Pelin (Isoss Publ, 2012)Senoglu (2005, 2007a) considered the estimation and hypothesis testing procedures for the 2(k) factorial designs when the error distributions are skew. They obtained the modified maximum likelihood (MML) estimators of the ... -
Robust 2k factorial designs: Non-normal symmetric distributions
Şenoğlu, Birdal; Acitaş, S.; Kasap, P. (2012)Şenoglu (2005, 2007a) considered the estimation and hypothesis testing procedures for the 2k factorial designs when the error distributions are skew. They obtained the modified maximum likelihood (MML) estimators of the ... -
Robust Estimation With the Skew T(2) Distribution
Acıtaş, Şükrü; Kasap, Pelin; Şenoğlu, Birdal; Arslan, Olcay (Isoss Publ, 2013)In this paper, a skew extension of the Student's t distribution with two degrees of freedom is used to model data sets that have skewness and heavy-tails. Its parameters are estimated using two different approaches based ... -
Robust estimation with the skew t2 distribution
In this paper, a skew extension of the Student's t distribution with two degrees of freedom is used to model data sets that have skewness and heavy-tails. Its parameters are estimated using two different approaches based ... -
Robust factorial ANCOVA with LTS error distributions
Acıtaş, Şükrü; Şenoğlu, Birdal (Hacettepe University, Fac Sci, 2018)In this study, parameter estimation and hypotheses testing in the balanced factorial analysis of covariance (ANCOVA) model, when the distribution of error terms is long-tailed symmetric (LTS) are considered. The unknown ...