Showing 91 - 99 of 99
Claeskens and Hjort (2003) have developed a focused information criterion (FIC) for model selection that selects different models based on different focused functions with those functions tailored to the parameters singled out for interest. Hjort and Claeskens (2003) also have presented model...
Persistent link: https://www.econbiz.de/10010690852
The past decade witnessed a literature on model averaging by frequentist methods. For the most part, the asymptotic optimality of various existing frequentist model averaging estimators has been established under i.i.d. errors. Recently, Hansen and Racine [Hansen, B.E., Racine, J., 2012....
Persistent link: https://www.econbiz.de/10010664706
This paper derives the corrected conditional Akaike information criteria for generalized linear mixed models by analytic approximation and parametric bootstrap. The sampling variation of both fixed effects and variance component parameter estimators are accommodated in the bias correction term....
Persistent link: https://www.econbiz.de/10010665718
The recently proposed 'weighted average least squares' (WALS) estimator is a Bayesian combination of frequentist estimators. It has been shown that the WALS estimator possesses major advantages over standard Bayesian model averaging (BMA) estimators: the WALS estimator has bounded risk, allows a...
Persistent link: https://www.econbiz.de/10008864204
Negative differential thermal resistance (NDTR) in Frenkel-Kontorova lattices with colored noise is investigated by means of numerical calculations. The results indicate that: (i) as the system has less atoms and is symmetric, the thermal current and heat conductivity becomes bigger with the...
Persistent link: https://www.econbiz.de/10011150984
This paper studies grouped model averaging methods for finite sample size situation. Sufficient conditions under which the grouped model averaging estimator dominates the ordinary least squares estimator are provided. A class of grouped model averaging estimators, g-class, is introduced, and its...
Persistent link: https://www.econbiz.de/10011160789
Abstract: Prediction under model uncertainty is an important and difficult issue. Traditional prediction methods (such as pretesting) are based on model selection followed by prediction in the selected model, but the reported prediction and the reported prediction variance ignore the uncertainty...
Persistent link: https://www.econbiz.de/10011091622
Purpose This study aims to quantify the underlying feelings of online reviews and discover the role of seasonality in customer dining experiences. Design/methodology/approach This study applied sentiment analysis to determine the polarity of a given comment. Furthermore, content analysis was...
Persistent link: https://www.econbiz.de/10014874059
Phosphorus (P), an essential element for life and ecosystem function, is a limiting element for plants and microorganisms in forest soil profiles. P availability is affected by three main mechanisms, namely the dissolution of H + , mineralization of enzymes, and assimilation by...
Persistent link: https://www.econbiz.de/10013301107