In recent years, it is seen in many time series applications that innovations are non-normal. In this situation, it is known that the least squares (LS) estimators are neither efficient nor robust and maximum likelihood ...
: AutoCAD is one of the widely used software tools in engineering education. In this study, a
general assessment of AutoCAD for the usage in the mechanical engineering technical drawing education
is made. AutoCAD is ...
Non-normality is becoming a common feature in real life applications. Using non-normal disturbances in autoregressive models induces non-linearity in the likelihood equations so that maximum likelihood estimators cannot ...
In recent years, it is seen in many time series applications that innovations are non-normal. In this situation, it is known that the least squares (LS) estimators are neither efficient nor robust and maximum likelihood ...
In recent years, many control charts have been proposed to monitor
profiles where the quality of a process/product is expressed as function of
response and explanatory variable(s). The methods mostly assume that the ...
In this study, control charts for monitoring linear profiles are adopted to early warning system (EWS) to see if global crises
can be detected before they occur so that preventive actions can be taken by the policy makers. ...
In this paper, we consider the autoregressive models where the error term is non-normal; specifically belongs to a long-tailed symmetric distribution family since it is more relevant in practice than the normal distribution. ...
Şenoğlu, Birdal; Bayrak, Özlem Türker(Hacettepe Univ, Fac Sci, 2016-12)
In this study, the explicit estimators of the model parameters in oneway classification AR(1) model with gamma innovations are derived by using modified maximum likelihood (MML) methodology. We also propose a new test ...
Fuzzy linear regression (FLR) approaches are widely used for modeling relations between variables that involve human judgments, qualitative and imprecise data. Tanaka's FLR analysis is the first one developed and widely ...
Ayhan, H. Öztaş; Islam, M. Qamarul(Springer, 2005-10)
Sample design and sample allocation methods are developed for random digit dialling in household telephone surveys. The proposed method is based on a two-way stratification of telephone numbers. A weighted probability ...
This paper presents customized models to predict next-day's electricity price in short-term periods for Turkey's electricity market. Turkey's electricity market is evolving from a centralized approach to a competitive ...
Fuel sector is one of the powerful sectors in Turkish industry. The implementation of a new law for regulating the fuel sector had enforced the quality control of fuels sold to public. This resulted in several accredited ...
Bayrak, Özlem Türker; Dener Akkaya, Ayşen(Springer International Publishing AG, 2018-12)
In classical autoregressive models, it is assumed that the disturbances are normally distributed and the exogenous variable is non-stochastic. However, in practice, short-tailed symmetric disturbances occur frequently and ...
The number of studies about control charts proposed to monitor profiles, where the quality of a process/product is expressed as function of response and explanatory variable(s), has been increasing in recent years. However, ...