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Stochastic frontier models with time-varying conditional variances
Tsionas, Efthymios G.; Kumbhakar, Subal - In: European journal of operational research : EJOR 292 (2021) 3, pp. 1115-1132
Persistent link: https://www.econbiz.de/10012502428
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Generalized estimation of productivity with multiple bad outputs : the importance of materials balance constraints
Atkinson, Scott Estes; Tsionas, Efthymios G. - In: European journal of operational research : EJOR 292 (2021) 3, pp. 1165-1186
Persistent link: https://www.econbiz.de/10012502432
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Endogenous dynamic efficiency in the intertemporal optimization models of firm behavior
Tsionas, Efthymios G.; Malikov, Emir; Kumbhakar, Subal - In: European journal of operational research : EJOR 284 (2020) 1, pp. 313-324
Persistent link: https://www.econbiz.de/10012238677
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A spatial stochastic frontier model with endogenous frontier and environmental variables
Kutlu, Levent; Tran, Kien C.; Tsionas, Efthymios G. - In: European journal of operational research : EJOR 286 (2020) 1, pp. 389-399
Persistent link: https://www.econbiz.de/10012240243
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On the estimation of technical and allocative efficiency in a panel stochastic production frontier system model : some new formulations and generalizations
Kumbhakar, Subal; Tsionas, Efthymios G. - In: European journal of operational research : EJOR 287 (2020) 2, pp. 762-775
Persistent link: https://www.econbiz.de/10012293949
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A Bayesian semiparametric approach to stochastic frontiers and productivity
Tsionas, Efthymios G.; Mallick, Sushanta Kumar - In: European journal of operational research : EJOR 274 (2019) 1, pp. 391-402
Persistent link: https://www.econbiz.de/10011990080
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On the estimation of total factor productivity : a novel Bayesian non-parametric approach
Tsionas, Efthymios G.; Polemis, Michael - In: European journal of operational research : EJOR 277 (2019) 3, pp. 886-902
Persistent link: https://www.econbiz.de/10012102208
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Quantile stochastic frontiers
Tsionas, Efthymios G. - In: European journal of operational research : EJOR 282 (2020) 3, pp. 1177-1184
Persistent link: https://www.econbiz.de/10012161889
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Optimal combinations of stochastic frontier and data envelopment analysis models
Tsionas, Efthymios G. - In: European journal of operational research : EJOR 294 (2021) 2, pp. 790-800
Persistent link: https://www.econbiz.de/10012595910
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Convex non-parametric least squares, causal structures and productivity
Tsionas, Efthymios G. - In: European journal of operational research : EJOR 303 (2022) 1, pp. 370-387
Persistent link: https://www.econbiz.de/10013363921