Başlık için İstatistik Bölümü listeleme
Toplam kayıt 170, listelenen: 118-137
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On developed estimation methods via unique and multiple parametrization
(2012)In the present study, two methods, based on entropy optimization principle, to estimate missing (or forecasting) values in the given time series are suggested. In the first method successively replaces the missing values ... -
On the Identifiability of Finite Mixtures Based on the Union of Logarithmic Series and Discrete Rectangular Families
(Springer, 2009)In this paper, finite mixtures of the union of Logarithmic Series and Discrete Rectangular families are proved to be identifiable. The sufficient condition for the identifiability of finite mixtures given by Atienza et al. ... -
On the performance of the flexible maximum entropy distributions within partially adaptive estimation
(Elsevier Science BV, 2011)The partially adaptive estimation based on the assumed error distribution has emerged as a popular approach for estimating a regression model with non-normal errors. In this approach, if the assumed distribution is flexible ... -
One-step M-estimators: Jones and Faddy's skewed t-distribution
(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 ... -
Optimum smoothing parameter selection for penalized least squares in form of linear mixed effect models
(Taylor & Francis LTD, 2012)In this article, we discuss the penalized least squares problem which has many advantageous computational properties. This method based on penalized spline (P-spline) smoothing can be formulated to fit into a linear mixed ... -
Otokorelasyonlu hatalara sahip görünüşte ilişkisiz regresyon denklemlerinin kestirimi
(1998)Görünüşte ilişkisiz regresyon denklemlerine ilişkin hataların hem aynı zamanda ilişkili hemde otokorelasyonlu olduğu durumda parametre tahminlerinde etkinlik kaybını önlemek gerekir. Çalışmada herbir denklemin birinci ... -
Öğrenci başarı notları için robust faktör analizi uygulaması
(2006)Faktör analizi, yaygın kullanılan çok değişkenli bir analiz tekniğidir. Faktör analizinin temelinde varyans-kovaryans matrisi ve korelasyon matrisi hesaplanması aşaması bulunmaktadır. Asal bileşenler analizi, faktör analizi ... -
Parameter estimation using different information-theoretical divergence measures
(2006)In this paper, a approach for parameter estimation is presented by using different divergence information measures. A comparison of the proposed approach and usual methods, such as the moment method, the least square method, ... -
Performance of Shannon’s Maximum Entropy Distribution Under Some Restrictions: an Application on Turkey’s Annual Temperatures
(2015)İstatistik biliminde entropi oldukça önemli bir yere sahiptir. Son yıllardaki çalışmalarda entropinin neredeyse bilimin her dalında yer aldığı görülebilir. İnformasyon teorisinde, Entropi, rassal bir değişkenin belirsizliğinin ... -
Portfolio optimization with entropy measure
(Acta Press Anaheim, 2007)In portfolio management, the selection of portfolio weights has received considerable interest. Considering the expected return, risk and uncertainty, the portfolio distribution is to be determined. The maximum entropy ... -
Regresyon analizinde çoklu bağıntı sorununun (multicollinearity) incelenmesi ve uygulanması
(1996)Bir regresyon analizinde araştırmacılar çoklu bağıntı (multicollinearity) sorunu ile çok sık karşılaşmaktadırlar. Açıklayıcı değişkenlerden bir veya birkaçının diğer açıklayıcı değişkenler tarafından iyi açıklandığı zaman, ... -
The relationship between environment and income: Regression spline approach
(2013)This paper examines the relationship between economic growth and carbon dioxide (CO2) emissions, the dominant contributor to the greenhouse effect, in Turkey. For time series data for the period 1980-2009 taking into account ... -
The Relationship Between Parental Defense Intensity and Nest Site Characteristics in Eurasian Magpie (Pica Pica L.) - an Assessment With the Classification Methods
(Corvinus University Budapest, 2017)Nest defense behavior varies among species and depends on different factors. However little is known of the influence of urbanization and nest characteristics on the nest defense intensity as parental investment of the ... -
Reliability and validity of Turkish version of the impact on family scale: Assessment of depressive symptoms and quality of life in mothers with cerebral palsied children
(2009)The pragmatic aims of this study were to investigate the reliability and validity of the Turkish version of the Impact on Family Scale (IFS) and to evaluate the impact of having disabled children on mothers. Two hundred ... -
Ridge-Type MML Estimator in the Linear Regression Model
(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
(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
(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 for Parameters of the Extended Burr Type III Distribution
(Taylor & Francis Inc, 2015)We consider various robust estimators for the extended Burr Type III (EBIII) distribution for complete data with outliers. The considered robust estimators are M-estimators, least absolute deviations, Theil, Siegel's ... -
Robust Estimation With the Skew T(2) Distribution
(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
(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 ...
