Kristiaan Kerstens

47 papers Journal 47
YearRankTypeTitle / Venue / Authors
2026 J jnl
An exploratory analysis of learning from peers: Radial vs. nonradial efficiency measures and convex vs. nonconvex technologies.
Eur. J. Oper. Res.
Kristiaan Kerstens, Bart Roets, Ignace Van de Woestyne, Shirong Zhao
2026 J jnl
Natural divisibility bridging convex and nonconvex technologies: Bargaining-based estimation by cost and revenue functions.
Eur. J. Oper. Res.
Kristiaan Kerstens, Stefano Nasini, Rabia Nessah
2026 J jnl
When cost metafrontiers are nonconvex in the outputs, then the production metafrontier is nonconvex: the price of a convexification strategy.
Eur. J. Oper. Res.
Kristiaan Kerstens, Christopher O'Donnell, Ignace Van de Woestyne, Shirong Zhao
2025 J jnl
An environmental Luenberger-Hicks-Moorsteen total factor productivity indicator: empirical analysis considering undesirable outputs either as inputs or outputs, and attention for infeasibilities.
Ann. Oper. Res.
Zhiyang Shen, Kristiaan Kerstens, Tomas Balezentis
2025 J jnl
Nonradial plant capacity concepts: proposals and attainability.
Ann. Oper. Res.
Kristiaan Kerstens, Jafar Sadeghi, Xiangyang Tao
2024 J jnl
Convex and nonconvex nonparametric frontier-based classification methods for anomaly detection.
OR Spectr.
Qianying Jin, Kristiaan Kerstens, Ignace Van de Woestyne
2024 J jnl
Correction to: Malmquist productivity indices and plant capacity utilisation: new proposals and empirical application.
Ann. Oper. Res.
Kristiaan Kerstens, Jafar Sadeghi, Ignace Van de Woestyne, Linjia Zhang
2024 J jnl
Double hedonic price-characteristics frontier estimation for IoT service providers in the industry 5.0 era: A nonconvex perspective accommodating ratios.
Eur. J. Oper. Res.
Kristiaan Kerstens, Majid Azadi, Reza Kazemi Matin, Reza Farzipoor Saen
2024 J jnl
Economic and Environmental Decomposition of Luenberger-Hicks-Moorsteen Total Factor Productivity Indicator: Empirical Analysis of Chinese Textile Firms With a Focus on Reporting Infeasibilities and Questioning Convexity.
IEEE Trans. Engineering Management
Tomas Balezentis, Kristiaan Kerstens, Zhiyang Shen
2024 J jnl
Evaluating different groups of mutual funds using a metafrontier approach: Ethical vs. non-ethical funds.
Eur. J. Oper. Res.
Qianying Jin, Antonella Basso, Stefania Funari, Kristiaan Kerstens, Ignace Van de Woestyne
2024 J jnl
Evaluation and optimization of hospital system in Chinese provinces: does mortality matter?
RAIRO Oper. Res.
Zhiyang Shen, Kristiaan Kerstens, Vivian Valdmanis, Songkai Wang
2024 J jnl
Plant capacity notions: review, new definitions, and existence results at firm and industry levels.
Int. J. Prod. Res.
Kristiaan Kerstens, Jafar Sadeghi
2024 J jnl
Risk-aversion versus risk-loving preferences in nonparametric frontier-based fund ratings: A buy-and-hold backtesting strategy.
Eur. J. Oper. Res.
Tiantian Ren, Kristiaan Kerstens, Saurav Kumar
2023 J jnl
Evaluating horizontal mergers in Swedish district courts using plant capacity concepts.
RAIRO Oper. Res.
Xiaoqing Chen, Kristiaan Kerstens
2022 J jnl
Generalised commensurability properties of efficiency measures: Implications for productivity indicators.
Eur. J. Oper. Res.
Walter Briec, Audrey Dumas, Kristiaan Kerstens, Agathe Stenger
2022 J jnl
Malmquist productivity indices and plant capacity utilisation: new proposals and empirical application.
Ann. Oper. Res.
Kristiaan Kerstens, Jafar Sadeghi, Ignace Van de Woestyne, Linjia Zhang
2022 J jnl
Procedures for ranking technical and cost efficient units: With a focus on nonconvexity.
Eur. J. Oper. Res.
Kristiaan Kerstens, Jafar Sadeghi, Mehdi Toloo, Ignace Van de Woestyne
2022 J jnl
Some connections between higher moments portfolio optimization methods.
CoRR
Farshad Noravesh, Kristiaan Kerstens
2021 J jnl
Cost functions are nonconvex in the outputs when the technology is nonconvex: convexification is not harmless.
Ann. Oper. Res.
Kristiaan Kerstens, Ignace Van de Woestyne
2020 J jnl
Empirical surveys of frontier applications: a meta-review.
Int. Trans. Oper. Res.
Cinzia Daraio, Kristiaan Kerstens, Thyago Celso Cavalcante Nepomuceno, Robin C. Sickles
2020 J jnl
Input Efficiency Measures: A Generalized, Encompassing Formulation.
Oper. Res.
Walter Briec, Laurent Cavaignac, Kristiaan Kerstens
2020 J jnl
Metafrontier productivity indices: Questioning the common convexification strategy.
Eur. J. Oper. Res.
Qianying Jin, Kristiaan Kerstens, Ignace Van de Woestyne
2020 J jnl
Plant capacity notions in a non-parametric framework: a brief review and new graph or non-oriented plant capacities.
Ann. Oper. Res.
Kristiaan Kerstens, Jafar Sadeghi, Ignace Van de Woestyne
2019 J jnl
Convex and nonconvex input-oriented technical and economic capacity measures: An empirical comparison.
Eur. J. Oper. Res.
Kristiaan Kerstens, Jafar Sadeghi, Ignace Van de Woestyne
2019 J jnl
Metatechnology frontier and convexity: A restatement.
Eur. J. Oper. Res.
Kristiaan Kerstens, Christopher O'Donnell, Ignace Van de Woestyne
2019 J jnl
Plant Capacity and Attainability: Exploration and Remedies.
Oper. Res.
Kristiaan Kerstens, Jafar Sadeghi, Ignace Van de Woestyne
2019 J jnl
Short- and long-run plant capacity notions: Definitions and comparison.
Eur. J. Oper. Res.
Giovanni Cesaroni, Kristiaan Kerstens, Ignace Van de Woestyne
2018 J jnl
Enumeration algorithms for FDH directional distance functions under different returns to scale assumptions.
Ann. Oper. Res.
Kristiaan Kerstens, Ignace Van de Woestyne
2018 J jnl
Testing general and special Färe-Primont indices: A proposal for public and private sector synthetic indices of European regional expenditures and tourism.
Eur. J. Oper. Res.
Walter Briec, Kristiaan Kerstens, Diego Prior, Ignace Van de Woestyne
2017 J jnl
Estimating scale economies in non-convex production models.
J. Oper. Res. Soc.
Giovanni Cesaroni, Kristiaan Kerstens, Ignace Van de Woestyne
2017 J jnl
Global and local scale characteristics in convex and nonconvex nonparametric technologies: A first empirical exploration.
Eur. J. Oper. Res.
Giovanni Cesaroni, Kristiaan Kerstens, Ignace Van de Woestyne
2015 J jnl
Frontier-based vs. traditional mutual fund ratings: A first backtesting analysis.
Eur. J. Oper. Res.
Olivier Brandouy, Kristiaan Kerstens, Ignace Van de Woestyne
2014 J jnl
A note on a variant of radial measure capable of dealing with negative inputs and outputs in DEA.
Eur. J. Oper. Res.
Kristiaan Kerstens, Ignace Van de Woestyne
2014 J jnl
Comparing Malmquist and Hicks-Moorsteen productivity indices: Exploring the impact of unbalanced vs. balanced panel data.
Eur. J. Oper. Res.
Kristiaan Kerstens, Ignace Van de Woestyne
2014 J jnl
Nonparametric cost and revenue functions under constant economies of scale: an enumeration approach for the single output or input case.
Int. Trans. Oper. Res.
Walter Briec, Kristiaan Kerstens, Ignace Van de Woestyne
2014 J jnl
Solution Methods for nonconvex Free disposal Hull Models: a Review and some Critical Comments.
Asia Pac. J. Oper. Res.
Kristiaan Kerstens, Ignace Van de Woestyne
2013 J jnl
Portfolio selection with skewness: A comparison of methods and a generalized one fund result.
Eur. J. Oper. Res.
Walter Briec, Kristiaan Kerstens, Ignace Van de Woestyne
2012 J jnl
Benchmarking mean-variance portfolios using a shortage function: the choice of direction vector affects rankings!
J. Oper. Res. Soc.
Kristiaan Kerstens, Amine Mounir, Ignace Van de Woestyne
2012 J jnl
Returns to growth in a nonparametric DEA approach.
Int. Trans. Oper. Res.
Biresh K. Sahoo, Kristiaan Kerstens, Kaoru Tone
2011 J jnl
Bank productivity and performance groups: A decomposition approach based upon the Luenberger productivity indicator.
Eur. J. Oper. Res.
Mircea Epure, Kristiaan Kerstens, Diego Prior
2011 J jnl
Geometric representation of the mean-variance-skewness portfolio frontier based upon the shortage function.
Eur. J. Oper. Res.
Kristiaan Kerstens, Amine Mounir, Ignace Van de Woestyne
2011 J jnl
Negative data in DEA: a simple proportional distance function approach.
J. Oper. Res. Soc.
Kristiaan Kerstens, Ignace Van de Woestyne
2010 J jnl
Comparing efficiency across markets: An extension and critique of the methodology.
Eur. J. Oper. Res.
Ruben Chumpitaz, Kristiaan Kerstens, Nicholas Paparoidamis, Matthias Staat
2010 J jnl
Hedonic price function estimation in economics and marketing: revisiting Lancaster's issue of "noncombinable" goods.
Ann. Oper. Res.
Ruben Chumpitaz, Kristiaan Kerstens, Nicholas Paparoidamis, Matthias Staat
2007 J jnl
Mean-Variance-Skewness Portfolio Performance Gauging: A General Shortage Function and Dual Approach.
Manag. Sci.
Walter Briec, Kristiaan Kerstens, Octave Jokung
1999 J jnl
Estimating returns to scale using non-parametric deterministic technologies: A new method based on goodness-of-fit.
Eur. J. Oper. Res.
Kristiaan Kerstens, Philippe Vanden Eeckaut
1998 J jnl
The choice of a technical efficiency measure on the free disposal hull reference technology: A comparison using US banking data.
Eur. J. Oper. Res.
Bruno De Borger, Gary D. Ferrier, Kristiaan Kerstens