Walter J. Gutjahr

Publication Activity (10 Years)

Years Active: 1991-2023
Publications (10 Years): 18

Top Topics

Decision Process

Multicriteria Optimization

Disaster Relief

Facility Location

Top Venues

Eur. J. Oper. Res.

Ann. Oper. Res.

Comput. Oper. Res.

Publications

Walter J. Gutjahr, Raimund M. Kovacevic, David Wozabal
Risk-Averse Bargaining in a Stochastic Optimization Context. Manuf. Serv. Oper. Manag. 25 (1) (2023)
Najmesadat Nazemi, Sophie N. Parragh, Walter J. Gutjahr
Bi-objective risk-averse facility location using a subset-based representation of the conditional value-at-risk. CoRR (2023)
Roland Braune, Walter J. Gutjahr, Petra Vogl
Stochastic radiotherapy appointment scheduling. Central Eur. J. Oper. Res. 30 (4) (2022)
Sophie N. Parragh, Fabien Tricoire, Walter J. Gutjahr
A branch-and-Benders-cut algorithm for a bi-objective stochastic facility location problem. OR Spectr. 44 (2) (2022)
Najmesadat Nazemi, Sophie N. Parragh, Walter J. Gutjahr
Bi-objective facility location under uncertainty with an application in last-mile disaster relief. Ann. Oper. Res. 319 (2) (2022)
Najmesadat Nazemi, Sophie N. Parragh, Walter J. Gutjahr
Bi-objective Risk-averse Facility Location using a Subset-based Representation of the Conditional Value-at-Risk. ICORES (2022)
Walter J. Gutjahr
Inequity-averse stochastic decision processes. Eur. J. Oper. Res. 288 (1) (2021)
Walter J. Gutjahr, Nilay Noyan, Nico Vandaele, Luk N. Van Wassenhove
Innovative approaches in humanitarian operations. OR Spectr. 42 (3) (2020)
Najmesadat Nazemi, Sophie N. Parragh, Walter J. Gutjahr
Bi-objective facility location in the presence of uncertainty. CoRR (2020)
Mahdi Mostajabdaveh, Walter J. Gutjahr, F. Sibel Salman
Inequity-averse shelter location for disaster preparedness. IISE Trans. 51 (8) (2019)
Walter J. Gutjahr, Alois Pichler
Uncertainty, economics and optimization: recent developments. Comput. Manag. Sci. 16 (4) (2019)
Thomas Felberbauer, Walter J. Gutjahr, Karl F. Doerner
Stochastic project management: multiple projects with multi-skilled human resources. J. Sched. 22 (3) (2019)
Walter J. Gutjahr, Sophie Fischer
Equity and deprivation costs in humanitarian logistics. Eur. J. Oper. Res. 270 (1) (2018)
Jürgen Branke, Salvatore Corrente, Salvatore Greco, Walter J. Gutjahr
Efficient pairwise preference elicitation allowing for indifference. Comput. Oper. Res. 88 (2017)
Christian Burkart, Pamela C. Nolz, Walter J. Gutjahr
Modelling beneficiaries' choice in disaster relief logistics. Ann. Oper. Res. 256 (1) (2017)
Stefan Rath, Michel Gendreau, Walter J. Gutjahr
Bi-objective stochastic programming models for determining depot locations in disaster relief operations. Int. Trans. Oper. Res. 23 (6) (2016)
Walter J. Gutjahr, Pamela C. Nolz
Multicriteria optimization in humanitarian aid. Eur. J. Oper. Res. 252 (2) (2016)
Walter J. Gutjahr, Alois Pichler
Stochastic multi-objective optimization: a survey on non-scalarizing methods. Ann. Oper. Res. 236 (2) (2016)
Jürgen Branke, Salvatore Corrente, Salvatore Greco, Walter J. Gutjahr
Using Indifference Information in Robust Ordinal Regression. EMO (2) (2015)
Walter J. Gutjahr
Bi-Objective Multi-Mode Project Scheduling Under Risk Aversion. Eur. J. Oper. Res. 246 (2) (2015)
Stefan Rath, Walter J. Gutjahr
A math-heuristic for the warehouse location-routing problem in disaster relief. Comput. Oper. Res. 42 (2014)
Walter J. Gutjahr
A Three-Objective Optimization Approach to Cost Effectiveness Analysis Under Uncertainty. OR (2012)
Walter J. Gutjahr
Runtime Analysis of an Evolutionary Algorithm for Stochastic Multi-Objective Combinatorial Optimization. Evol. Comput. 20 (3) (2012)
Peter Reiter, Walter J. Gutjahr
Exact hybrid algorithms for solving a bi-objective vehicle routing problem. Central Eur. J. Oper. Res. 20 (1) (2012)
Fabien Tricoire, Alexandra Graf, Walter J. Gutjahr
The bi-objective stochastic covering tour problem. Comput. Oper. Res. 39 (7) (2012)
Karl F. Doerner, Walter J. Gutjahr, Luk N. Van Wassenhove
Special issue on optimization in disaster relief. OR Spectr. 33 (3) (2011)
Walter J. Gutjahr
Recent trends in metaheuristics for stochastic combinatorial optimization. Central Eur. J. Comput. Sci. 1 (1) (2011)
Walter J. Gutjahr
Optimal dynamic portfolio selection for projects under a competence development model. OR Spectr. 33 (1) (2011)
Walter J. Gutjahr, Stefan Katzensteiner, Peter Reiter, Christian Stummer, Michaela Denk
Multi-objective decision analysis for competence-oriented project portfolio selection. Eur. J. Oper. Res. 205 (3) (2010)
Marion S. Rauner, Walter J. Gutjahr, Kurt Heidenberger, Joachim Wagner, Joseph M. Pasia
Dynamic Policy Modeling for Chronic Diseases: Metaheuristic-Based Identification of Pareto-Optimal Screening Strategies. Oper. Res. 58 (5) (2010)
Karl F. Doerner, Walter J. Gutjahr, Pamela C. Nolz
Multi-criteria location planning for public facilities in tsunami-prone coastal areas. OR Spectr. 31 (3) (2009)
Walter J. Gutjahr
A provably convergent heuristic for stochastic bicriteria integer programming. J. Heuristics 15 (3) (2009)
Leonora Bianchi, Marco Dorigo, Luca Maria Gambardella, Walter J. Gutjahr
A survey on metaheuristics for stochastic combinatorial optimization. Nat. Comput. 8 (2) (2009)
Christian Stummer, Elmar Kiesling, Walter J. Gutjahr
A multicriteria Decision Support System for Competence-Driven Project Portfolio Selection. Int. J. Inf. Technol. Decis. Mak. 8 (2) (2009)
Walter J. Gutjahr, Stefan Katzensteiner, Peter Reiter, Christian Stummer, Michaela Denk
Competence-driven project portfolio selection, scheduling and staff assignment. Central Eur. J. Oper. Res. 16 (3) (2008)
Walter J. Gutjahr
First steps to the runtime complexity analysis of ant colony optimization. Comput. Oper. Res. 35 (9) (2008)
Walter J. Gutjahr, Mark Harman
Search-based software engineering. Comput. Oper. Res. 35 (10) (2008)
Walter J. Gutjahr, Stefan Katzensteiner, Peter Reiter
A VNS Algorithm for Noisy Problems and Its Application to Project Portfolio Analysis. SAGA (2007)
Sally C. Brailsford, Walter J. Gutjahr, Marion S. Rauner, Wolfgang Zeppelzauer
Combined Discrete-event Simulation and Ant Colony Optimisation Approach for Selecting Optimal Screening Policies for Diabetic Retinopathy. Comput. Manag. Sci. 4 (1) (2007)
Walter J. Gutjahr
Mathematical runtime analysis of ACO algorithms: survey on an emerging issue. Swarm Intell. 1 (1) (2007)
Walter J. Gutjahr, Marion S. Rauner
An ACO algorithm for a dynamic regional nurse-scheduling problem in Austria. Comput. Oper. Res. 34 (3) (2007)
Karl Doerner, Axel Focke, Walter J. Gutjahr
Multicriteria tour planning for mobile healthcare facilities in a developing country. Eur. J. Oper. Res. 179 (3) (2007)
Karl F. Doerner, Walter J. Gutjahr, Gabriele Kotsis, Martin Polaschek, Christine Strauss
Enriched workflow modelling and Stochastic Branch-and-Bound. Eur. J. Oper. Res. 175 (3) (2006)
Walter J. Gutjahr
Interaction dynamics of two reinforcement learners. Central Eur. J. Oper. Res. 14 (1) (2006)
Karl F. Doerner, Walter J. Gutjahr, Richard F. Hartl, Christine Strauss, Christian Stummer
Pareto ant colony optimization with ILP preprocessing in multiobjective project portfolio selection. Eur. J. Oper. Res. 171 (3) (2006)
Walter J. Gutjahr
Two Metaheuristics for Multiobjective Stochastic Combinatorial Optimization. SAGA (2005)
Walter J. Gutjahr
S-ACO: An Ant-Based Approach to Combinatorial Optimization Under Uncertainty. ANTS Workshop (2004)
Karl F. Doerner, Walter J. Gutjahr, Richard F. Hartl, Christine Strauss, Christian Stummer
Pareto Ant Colony Optimization: A Metaheuristic Approach to Multiobjective Portfolio Selection. Ann. Oper. Res. 131 (1-4) (2004)
Hyeong Soo Chang, Walter J. Gutjahr, Jihoon Yang, Sungyong Park
An ant system approach to Markov decision processes. ACC (2004)
Walter J. Gutjahr
A Converging ACO Algorithm for Stochastic Combinatorial Optimization. SAGA (2003)
Karl Doerner, Walter J. Gutjahr
Extracting Test Sequences from a Markov Software Usage Model by ACO. GECCO (2003)
Walter J. Gutjahr, Gabriele Uchida
A branch-and-bound approach to the optimization of redundant software under failure correlation. Comput. Oper. Res. 29 (13) (2002)
Stefan Biffl, Walter J. Gutjahr
Using a Reliability Growth Model to Control Software Inspection. Empir. Softw. Eng. 7 (3) (2002)
Walter J. Gutjahr
ACO algorithms with guaranteed convergence to the optimal solution. Inf. Process. Lett. 82 (3) (2002)
Walter J. Gutjahr
A reliability model for nonhomogeneous redundant software versions with correlated failures. Comput. Syst. Sci. Eng. 16 (6) (2001)
Stefan Biffl, Walter J. Gutjahr
Influence Of Team Size And Defect Detection Technique On Inspection Effectiveness. IEEE METRICS (2001)
Walter J. Gutjahr, Christine Strauss, Martin Toth
Crashing of stochastic processes by sampling and optimisation. Bus. Process. Manag. J. 6 (1) (2000)
Walter J. Gutjahr
A Graph-based Ant System and its convergence. Future Gener. Comput. Syst. 16 (8) (2000)
Karl Doerner, Walter J. Gutjahr
Representation and optimization of software usage models with non-Markovian state transitions. Inf. Softw. Technol. 42 (12) (2000)
Walter J. Gutjahr
Software dependability evaluation based on Markov usage models. Perform. Evaluation 40 (4) (2000)
Walter J. Gutjahr, Christine Strauss, Eric W. Wagner
A Stochastic Branch-and-Bound Approach to Activity Crashing in Project Management. INFORMS J. Comput. 12 (2) (2000)
Walter J. Gutjahr
Partition Testing vs. Random Testing: The Influence of Uncertainty. IEEE Trans. Software Eng. 25 (5) (1999)
Walter J. Gutjahr, A. Hellmayr, Georg Ch. Pflug
Optimal stochastic single-machine-tardiness scheduling by stochastic branch-and-bound. Eur. J. Oper. Res. 117 (2) (1999)
Walter J. Gutjahr
Reliability optimization of redundant software with correlated failures. ISSRE (1998)
Walter J. Gutjahr, Ch. E. Wöber
An improved algorithm for finding minimum-risk 3-state-device networks. Int. J. Comput. Math. 64 (1-2) (1997)
Walter J. Gutjahr, Martin Hitz, Thomas A. Mück
Task Assignment in Cayley Interconnection Topologies. Parallel Comput. 23 (10) (1997)
Walter J. Gutjahr, Georg Ch. Pflug
Simulated Annealing for noisy cost functions. J. Glob. Optim. 8 (1) (1996)
Walter J. Gutjahr
Failure Risk Estimation via Markov Software Usage Models. SAFECOMP (1996)
Walter J. Gutjahr
Optimal Test Distributions for Software Failure Cost Estimation. IEEE Trans. Software Eng. 21 (3) (1995)
Walter J. Gutjahr
A global optimization problem in series-parallel networks with maximum reliability. J. Glob. Optim. 5 (4) (1994)
Walter J. Gutjahr
Connection Reliabilities in Stochastic Acyclic Networks. Random Struct. Algorithms 5 (1) (1994)
Walter J. Gutjahr
Automatische Testdatengenerierung zur Unterstützung des Softwaretests. Inform. Forsch. Entwickl. 8 (3) (1993)
Walter J. Gutjahr
Expectation Transfer between Branching Processes and Random Trees. Random Struct. Algorithms 4 (4) (1993)
Walter J. Gutjahr, Georg Ch. Pflug
The limiting common distribution of two leaf heights in a random brinary tree. RAIRO Theor. Informatics Appl. 26 (1992)
Walter J. Gutjahr
The Variance of Level Numbers in Certain Families of Trees. Random Struct. Algorithms 3 (4) (1992)
Walter J. Gutjahr, Georg Ch. Pflug
The asymptotic distribution of leaf heights in binary trees. Graphs Comb. 8 (3) (1992)
Walter J. Gutjahr
Uniform random generation of expressions respecting algebraic identities. Computing 47 (1) (1991)