Výsledky vyhledávání - "Efthymios G. Tsionas"

Akademický článek

Bayesian Approach to Disentangling Technical and Environmental Productivity

Autor: Emir Malikov, Subal C. Kumbhakar, Efthymios G. Tsionas

Publikováno v: Econometrics, Vol 3, Iss 2, Pp 443-465 (2015)

This paper models the firm’s production process as a system of simultaneous technologies for desirable and undesirable outputs. Desirable outputs are produced by transforming inputs via the conventional transformation function, whereas (consistent

Externí odkaz: https://doaj.org/article/73696a98c44949f78d0fb4fe3668914d

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Akademický článek

Global Approximations to Cost and Production Functions using Artificial Neural Networks

Autor: Efthymios G. Tsionas, Panayotis G. Michaelides, Angelos T. Vouldis

Publikováno v: International Journal of Computational Intelligence Systems, Vol 2, Iss 2, Pp 132-139 (2009)

Abstract The estimation of cost and production functions in economics usually relies on standard specifications which are less that satisfactory in numerous situations. However, instead of fitting the data with a pre-specified model, Artificial Neura

Externí odkaz: https://doaj.org/article/fb1e01a82fce46c1898b35c122a6e019

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Akademický článek

Some Recent Developments in Efficiency Measurement in Stochastic Frontier Models

Autor: Subal C. Kumbhakar, Efthymios G. Tsionas

Publikováno v: Journal of Probability and Statistics, Vol 2011 (2011)

This paper addresses some of the recent developments in efficiency measurement using stochastic frontier (SF) models in some selected areas. The following three issues are discussed in details. First, estimation of SF models with input-oriented techn

Externí odkaz: https://doaj.org/article/fe8de47fcd7e4b08be4b13e307093a7e

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