Efthymios G Tsionas

Biographic Data

ID	5917741
NAME	Efthymios G Tsionas
GIVEN NAMES	Efthymios G
FAMILY NAME	Tsionas
SIGNATURE	TSIONAS E G
AFFILIATIONS	Lancaster University
ORCID	0000-0003-3761-8106
VERIFIED	Yes
TOTAL WORKS	41
TOTAL CITATIONS	109
AUTHOR COUNT	41
EDITOR COUNT	0
FIRST PUBLICATION YEAR	2000
LATEST PUBLICATION YEAR	2025
H-INDEX	6

Quality of life performance index for tourism destinations
Open AccessAdiyukh Berbekova, Albert Assaf et al.ARTICLETourism Management2025References: 48
A Non‐parametric Estimation of Productivity with Idiosyncratic and Aggregate Shocks: The Role of Research and Development (R&D) and Corporate Tax
Open AccessIoannis Bournakis, Efthymios G Tsionas et al.ARTICLEOxford Bulletin of Economics and…2024
We develop a non‐parametric technique framework for estimating firm‐level Total Factor Productivity (TFP). Our paper has two major novelties: first, we propose a modelling of productivity with both firm‐idiosyncratic factors and aggregate shocks. Second, we apply the Bayesian Markov Chain Monte Carlo (MCMC) technique that offers a numerical integration of productivity outside the posterior overcoming the restrictive assumptions about the relation…
Critical reflection of the tourism literature on performance modeling
Open AccessAlbert Assaf, A George Assaf et al.ARTICLETourism Management2024References: 8
The response of household debt to Covid-19 using a neural networks VAR in OECD
Open AccessEmmanuel C Mamatzakis, Steven Ongena et al.ARTICLEEmpirical Economics2023
Productivity and Performance: A GMM approach
Open AccessEfthymios G Tsionas, Mike G Tsionas et al.ARTICLEOxford Bulletin of Economics and…2023
In this paper we propose a single‐step generalized method of moments (GMM) approach to estimate a production function with multiple quasi‐fixed and variable inputs as well as productivity and inefficiency. Our approach relies on the system consisting of the production function, the first‐order conditions of expected profit maximization with respect to the variable inputs, as well as general formulations for dynamic productivity and inefficiency. …
Extensions of the Pesaran, Shin and Smith (2001) bounds testing procedure
Open AccessGeorgios Bertsatos, Plutarchos Sakellaris et al.ARTICLEEmpirical Economics2022
Heterogeneous decision-making and market power: An application to Eurozone banks
Open AccessLevent Kutlu, Robin C Sickles et al.ARTICLEEmpirical Economics2022
Addressing endogeneity when estimating stochastic ray production frontiers: A Bayesian approach
Open AccessEfthymios G Tsionas, Mike Tsionas et al.ARTICLEEmpirical Economics2022
Random and Markov switching exponential smoothing models
Open AccessEfthymios G Tsionas, Mike G TsionasARTICLETechnological Forecasting and…2022
Estimating Monotone Concave Stochastic Production Frontiers
Open AccessEfthymios G Tsionas, Mike G TsionasARTICLEJournal of Business and Economic…2022
Recent research shows that the search for Bayesian estimation of concave production functions is a fruitful area of investigation. In this article, we use a flexible cost function that satisfies globally the monotonicity and curvature properties to estimate features of the production function. Specification of a globally monotone concave production function is a difficult task which is avoided here by using the first-order conditions for cost min…
Covid-19 and gradual adjustment in the tourism, hospitality, and related industries
Open AccessEfthymios G TsionasARTICLETourism Economics2021
In this Note, we take up the problem of post-COVID-19 gradual adjustment in the industry as well as whether and to what extent opening with limited capacity might be feasible. We find that (i) reopening gradually requiring only nonnegative profits is quite feasible but (ii) reopening requiring the same level of profit as in the pre-COVID-19 period is considerably more difficult, and seems feasible by reopening at capacity near 33%. Lower capaciti…
Testing for Collinearity using Bayesian Analysis
Open AccessAlbert Assaf, Efthymios G Tsionas et al.ARTICLEJournal of Hospitality & Tourism…2021
Testing for collinearity continues to be a controversial issue in the literature. Multicollinearity detection criteria, such as the variance inflation factor, often fail to detect the true extent of multicollinearity. In this article, we propose utilizing the Bayesian approach as an attractive alternative. Under the Bayesian approach, we recommend comparing the marginal posterior of regression parameters under two different priors. If the differe…
Constraints in models of production and cost via slack-based measures
Open AccessCaroline Khan, Efthymios G TsionasARTICLEEmpirical Economics2021
In this paper, we propose the use of stochastic frontier models to impose theoretical regularity constraints (like monotonicity and concavity) on flexible functional forms. These constraints take the form of inequalities involving the data and the parameters of the model. We address a major concern when statistically endogenous variables are present in these inequalities. We present results with and without endogeneity in the inequality constrain…
Estimation of semi- and nonparametric stochastic frontier models with endogenous regressors
Open AccessAndrei Prokhorov, Artem Prokhorov et al.ARTICLEEmpirical Economics2021
A Bayesian solution to multicollinearity through unobserved common factors
Open AccessAlbert Assaf, A George Assaf et al.ARTICLETourism Management2021Cited by: 1References: 12
A Bayesian non-parametric stochastic frontier model
Open AccessAlbert Assaf, A George Assaf et al.ARTICLEAnnals of Tourism Research2021References: 37
Compression in stochastic frontier models
Open AccessEfthymios G Tsionas, Mike G Tsionas et al.ARTICLEAnnals of Tourism Research2021References: 3
Measuring firm performance: Differentiating between uncontrollable and controllable bad outputs
Open AccessAlbert Assaf, Efthymios G Tsionas et al.ARTICLETourism Management2020References: 36
Endogeneity in multiple output production: Evidence from the US hotel industry
Open AccessAlbert Assaf, Scott E Atkinson et al.ARTICLETourism Management2020Cited by: 2References: 55
A review of research into performance modeling in tourism research - Launching the Annals of Tourism Research curated collection on performance modeling in tourism research
Open AccessAlbert Assaf, A George Assaf et al.ARTICLEAnnals of Tourism Research2019
Revisiting shape and moderation effects in curvilinear models
Open AccessAlbert Assaf, A George Assaf et al.ARTICLETourism Management2019Cited by: 2References: 24
Diagnosing and correcting the effects of multicollinearity: Bayesian implications of ridge regression
Open AccessAlbert Assaf, A George Assaf et al.ARTICLETourism Management2019Cited by: 2References: 23
Bayesian dynamic panel models for tourism research
Open AccessAlbert Assaf, A George Assaf et al.ARTICLETourism Management2019Cited by: 3References: 43
Forecasting occupancy rate with Bayesian compression methods
Open AccessAlbert Assaf, A George Assaf et al.ARTICLEAnnals of Tourism Research2019Cited by: 2References: 32
On proper specification in tourism research
Open AccessAlbert Assaf, A George Assaf et al.ARTICLEAnnals of Tourism Research2019References: 3