Yayın tarihi için İstatistik Bölümü listeleme
Toplam kayıt 170, listelenen: 21-40
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Investigation of house price in Eskisehir (Turkey) by using semiparametric additive regression model
(World Scientific and Engineering Academy and Society, 2006)In this paper, different regression models are obtained to examine relation between house price and house features in Centrum of Eskisehir Province (Turkey). The statistical analyses of this paper indicate that some of ... -
The individuals control chart in case of non-normality
(2006)This article examines the effects of non-normality as measured by skewness and provides an alternative method of designing individuals control chart with non-normal distributions. A skewness correction method for constructing ... -
The distribution of minimizing maximum entropy: Alternative to Weibull distribution for wind speed
(2006)In the present study, we have constructed MinMaxEnt distribution alternative to the Weibull distribution for the wind speed. MinMaxEnt distribution minimizes the special maximum entropy functional in the concrete set of ... -
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 ... -
Estimating the location and scale parameters of the Weibull distribution: An application from engineering
(Acta Press Anaheim, 2007)There exist various methods for estimating the location and scale parameters of the Weibull distribution. The maximum likelihood estimators (MLE), moment estimators (ME), generalized spacing estimators (GSE), modified ... -
The smoothing parameter selection problem in smoothing spline regression for different data sets
(2007)This paper studies smoothing parameter selection problem in nonparametric regression based on smoothing spline method for different data sets. For this aim, a Monte Carlo simulation study was performed. This simulation ... -
Türkiye'de illere göre iç göç hareketlerinin modern kümeleme teknikleri ile incelenmesi
(2007)Türkiye’de özellikle büyük sehirlere dogru bir göç yasanmaktadır. Fakat son yıllarda büyüksehir belediyeleri, köylerine ya da kasabalarına geri dönmek isteyenlere çesitli kolaylıklar saglamaktadır. Bu çalısmada iç göç ... -
A semiparametric additive regression model: Investigation of house price in Eskisehir (Turkey)
(2007)In this paper, different regression models are obtained to examine relation between house price and house features in Centrum of Eskisehir Province (Turkey). The statistical analyses of this paper indicate that some of ... -
A framework for fuzzy variable control charts with ?-cuts
(2007)In traditional variable control charts, center line, upper control limit and lower control limit are crisp values. In this situation, process are defined "in control" or "out of control" with depending on observation values ... -
Comparison of goodness-of-fit measures in probit regression model
(Taylor & Francis Inc, 2007)This article examines several goodness-of-fit measures in the binary probit regression model. Existing pseudo-R-2 measures are reviewed, two modified and one new pseudo-R-2 measure are proposed. For the probit regression ... -
A comparison of various tests of normality
(Taylor & Francis LTD, 2007)This article studies twelve different normality tests that are used for assessing the assumption that a sample was drawn from a normally distributed population and compares their powers. The tests in question are chi-square, ... -
A Fano-Huffman based statistical coding method
(Wayne State University, 2007)Statistical coding techniques have been used for lossless statistical data compression, applying methods such as Ordinary, Shannon, Fano, Enhanced Fano, Huffman and Shannon-Fano-Elias coding methods. A new and improved ... -
Generalized entropy optimization problems and the existence of their solutions
(Elsevier Science BV, 2007)In the present study we have formulated a generalization of entropy optimization problems (GEOP), proposed sufficient conditions for the existence of solution. We have suggested also a new method based on a priori evaluations ... -
Comparison of ARIMA, neural networks and hybrid models in time series: tourist arrival forecasting
(Taylor & Francis LTD, 2007)For time series forecasting, different artificial neural network (ANN) and hybrid models are recommended as alternatives to commonly used autoregressive integrated moving average (ARIMA) models. Recently, combined models ... -
Bulanık mantıkta korelasyon katsayısı; meterolojik olaylarda bir uygulama
(2007)Korelasyon iki yada daha çok sayıda değişken arasındaki ilişkiyi göstermekte ilişki miktarı ise korelasyon katsayısı ile belirlenmektedir. İki değişken arasındaki doğrusal ilişkinin derecesini belirleyen korelasyon katsayısını ... -
Examining cronbach alpha, theta, omega reliability coefficients according to the sample size
(Wayne State University, 2007)Differentiations according to the sample size of different reliability coefficients are examined. It is concluded that the estimates obtained by Cronbach alpha and teta coefficients are not related with the sample size, ... -
Misusage of statistics in medical research
(2007)The inappropriate use of statistical method and technique cause time and cost losts and it can be misleading to other scientific researhes. So in this study the main statistical error sources in medical research are discussed ... -
A sequential test for the mean direction applied to circular data and an application
(2007)Bu çalısmada, dairesel verilerde ardısık test incelenmektedir. von Mises dagılımı için Olasılık Oranlarının Ardısık Testi’nin kuramsal tanımı, karakteristik islem fonksiyonu ve ortalama örneklem sayısı fonksiyonu verilmistir. ... -
Gördes yöresi klinoptilolitin (Doğal ve modifiye)su buharı adsorpsiyonu
(2007)Bu çalışmada Gördes klinoptiloliti (klinoptilolitçe zengin doğal tüf örneği) (CLN) ve bundan itibaren hazırlanan katyonik formlar (Li-, Na-, K-, Mg-, Ca-, ZH1- ve ZH2-CLN örnekleri), üzerinde zamana bağlı olarak, 30?C, ... -
Derivation of ME estimator of a mixture of two normal distributions
(World Scientific And Engineering Acad And Soc, 2008)In this study, we obtain the parameters of a mixture density by using the principle of maximum equality which is based on Shannon's entropy measure. Since this procedure doesn't require constructing the likelihood function ...