Walter J. Gutjahr

83 papers A 2B 1C 2Journal 67Unranked 7
YearRankTypeTitle / Venue / Authors
2025 J jnl
A Branch-and-Price Algorithm for Fast and Equitable Last-Mile Relief Aid Distribution.
CoRR
Mahdi Mostajabdaveh, F. Sibel Salman, Walter J. Gutjahr
2025 J jnl
A branch-and-price algorithm for fast and equitable last-mile relief aid distribution.
Eur. J. Oper. Res.
Mahdi Mostajabdaveh, F. Sibel Salman, Walter J. Gutjahr
2023 J jnl
Bi-objective risk-averse facility location using a subset-based representation of the conditional value-at-risk.
CoRR
Najmesadat Nazemi, Sophie N. Parragh, Walter J. Gutjahr
2023 J jnl
Risk-Averse Bargaining in a Stochastic Optimization Context.
Manuf. Serv. Oper. Manag.
Walter J. Gutjahr, Raimund M. Kovacevic, David Wozabal
2022 J jnl
A branch-and-Benders-cut algorithm for a bi-objective stochastic facility location problem.
OR Spectr.
Sophie N. Parragh, Fabien Tricoire, Walter J. Gutjahr
2022 C conf
Bi-objective Risk-averse Facility Location using a Subset-based Representation of the Conditional Value-at-Risk.
ICORES
Najmesadat Nazemi, Sophie N. Parragh, Walter J. Gutjahr
2022 J jnl
Bi-objective facility location under uncertainty with an application in last-mile disaster relief.
Ann. Oper. Res.
Najmesadat Nazemi, Sophie N. Parragh, Walter J. Gutjahr
2022 J jnl
Stochastic radiotherapy appointment scheduling.
Central Eur. J. Oper. Res.
Roland Braune, Walter J. Gutjahr, Petra Vogl
2021 J jnl
Inequity-averse stochastic decision processes.
Eur. J. Oper. Res.
Walter J. Gutjahr
2020 J jnl
Bi-objective facility location in the presence of uncertainty.
CoRR
Najmesadat Nazemi, Sophie N. Parragh, Walter J. Gutjahr
2020 J jnl
Innovative approaches in humanitarian operations.
OR Spectr.
Walter J. Gutjahr, Nilay Noyan, Nico Vandaele, Luk N. Van Wassenhove
2019 J jnl
Inequity-averse shelter location for disaster preparedness.
IISE Trans.
Mahdi Mostajabdaveh, Walter J. Gutjahr, F. Sibel Salman
2019 J jnl
Stochastic project management: multiple projects with multi-skilled human resources.
J. Sched.
Thomas Felberbauer, Walter J. Gutjahr, Karl F. Doerner
2019 J jnl
Uncertainty, economics and optimization: recent developments.
Comput. Manag. Sci.
Walter J. Gutjahr, Alois Pichler
2018 J jnl
Equity and deprivation costs in humanitarian logistics.
Eur. J. Oper. Res.
Walter J. Gutjahr, Sophie Fischer
2017 J jnl
Efficient pairwise preference elicitation allowing for indifference.
Comput. Oper. Res.
Jürgen Branke, Salvatore Corrente, Salvatore Greco, Walter J. Gutjahr
2017 J jnl
Modelling beneficiaries' choice in disaster relief logistics.
Ann. Oper. Res.
Christian Burkart, Pamela C. Nolz, Walter J. Gutjahr
2016 J jnl
Bi-objective stochastic programming models for determining depot locations in disaster relief operations.
Int. Trans. Oper. Res.
Stefan Rath, Michel Gendreau, Walter J. Gutjahr
2016 J jnl
Multicriteria optimization in humanitarian aid.
Eur. J. Oper. Res.
Walter J. Gutjahr, Pamela C. Nolz
2016 J jnl
Stochastic multi-objective optimization: a survey on non-scalarizing methods.
Ann. Oper. Res.
Walter J. Gutjahr, Alois Pichler
2015 J jnl
Bi-Objective Multi-Mode Project Scheduling Under Risk Aversion.
Eur. J. Oper. Res.
Walter J. Gutjahr
2015 — conf
Using Indifference Information in Robust Ordinal Regression.
EMO (2)
Jürgen Branke, Salvatore Corrente, Salvatore Greco, Walter J. Gutjahr
2014 J jnl
A math-heuristic for the warehouse location-routing problem in disaster relief.
Comput. Oper. Res.
Stefan Rath, Walter J. Gutjahr
2012 — conf
A Three-Objective Optimization Approach to Cost Effectiveness Analysis Under Uncertainty.
OR
Walter J. Gutjahr
2012 J jnl
Exact hybrid algorithms for solving a bi-objective vehicle routing problem.
Central Eur. J. Oper. Res.
Peter Reiter, Walter J. Gutjahr
2012 J jnl
Runtime Analysis of an Evolutionary Algorithm for Stochastic Multi-Objective Combinatorial Optimization.
Evol. Comput.
Walter J. Gutjahr
2012 J jnl
The bi-objective stochastic covering tour problem.
Comput. Oper. Res.
Fabien Tricoire, Alexandra Graf, Walter J. Gutjahr
2011 — ch.
Ant Colony Optimization: Recent Developments in Theoretical Analysis.
Theory of Randomized Search Heuristics
Walter J. Gutjahr
2011 J jnl
Optimal dynamic portfolio selection for projects under a competence development model.
OR Spectr.
Walter J. Gutjahr
2011 J jnl
Recent trends in metaheuristics for stochastic combinatorial optimization.
Central Eur. J. Comput. Sci.
Walter J. Gutjahr
2011 J jnl
Special issue on optimization in disaster relief.
OR Spectr.
Karl F. Doerner, Walter J. Gutjahr, Luk N. Van Wassenhove
2010 — ch.
A Bi-objective Metaheuristic for Disaster Relief Operation Planning.
Advances in Multi-Objective Nature Inspired Computing
Pamela C. Nolz, Karl F. Doerner, Walter J. Gutjahr, Richard F. Hartl
2010 — ch.
Convergence Analysis of Metaheuristics.
Matheuristics
Walter J. Gutjahr
2010 J jnl
Dynamic Policy Modeling for Chronic Diseases: Metaheuristic-Based Identification of Pareto-Optimal Screening Strategies.
Oper. Res.
Marion S. Rauner, Walter J. Gutjahr, Kurt Heidenberger, Joachim Wagner, Joseph M. Pasia
2010 J jnl
Multi-objective decision analysis for competence-oriented project portfolio selection.
Eur. J. Oper. Res.
Walter J. Gutjahr, Stefan Katzensteiner, Peter Reiter, Christian Stummer, Michaela Denk
2009 J jnl
A multicriteria Decision Support System for Competence-Driven Project Portfolio Selection.
Int. J. Inf. Technol. Decis. Mak.
Christian Stummer, Elmar Kiesling, Walter J. Gutjahr
2009 J jnl
A provably convergent heuristic for stochastic bicriteria integer programming.
J. Heuristics
Walter J. Gutjahr
2009 J jnl
A survey on metaheuristics for stochastic combinatorial optimization.
Nat. Comput.
Leonora Bianchi, Marco Dorigo, Luca Maria Gambardella, Walter J. Gutjahr
2009 J jnl
Multi-criteria location planning for public facilities in tsunami-prone coastal areas.
OR Spectr.
Karl F. Doerner, Walter J. Gutjahr, Pamela C. Nolz
2008 J jnl
Competence-driven project portfolio selection, scheduling and staff assignment.
Central Eur. J. Oper. Res.
Walter J. Gutjahr, Stefan Katzensteiner, Peter Reiter, Christian Stummer, Michaela Denk
2008 J jnl
First steps to the runtime complexity analysis of ant colony optimization.
Comput. Oper. Res.
Walter J. Gutjahr
2008 J jnl
Search-based software engineering.
Comput. Oper. Res.
Walter J. Gutjahr, Mark Harman
2007 — conf
A VNS Algorithm for Noisy Problems and Its Application to Project Portfolio Analysis.
SAGA
Walter J. Gutjahr, Stefan Katzensteiner, Peter Reiter
2007 J jnl
An ACO algorithm for a dynamic regional nurse-scheduling problem in Austria.
Comput. Oper. Res.
Walter J. Gutjahr, Marion S. Rauner
2007 J jnl
Combined Discrete-event Simulation and Ant Colony Optimisation Approach for Selecting Optimal Screening Policies for Diabetic Retinopathy.
Comput. Manag. Sci.
Sally C. Brailsford, Walter J. Gutjahr, Marion S. Rauner, Wolfgang Zeppelzauer
2007 J jnl
Mathematical runtime analysis of ACO algorithms: survey on an emerging issue.
Swarm Intell.
Walter J. Gutjahr
2007 — book
Metaheuristics
Metaheuristics
Karl F. Doerner, Michel Gendreau, Peter Greistorfer, Walter J. Gutjahr, Richard F. Hartl, Marc Reimann
2007 J jnl
Multicriteria tour planning for mobile healthcare facilities in a developing country.
Eur. J. Oper. Res.
Karl Doerner, Axel Focke, Walter J. Gutjahr
2006 J jnl
Enriched workflow modelling and Stochastic Branch-and-Bound.
Eur. J. Oper. Res.
Karl F. Doerner, Walter J. Gutjahr, Gabriele Kotsis, Martin Polaschek, Christine Strauss
2006 J jnl
Interaction dynamics of two reinforcement learners.
Central Eur. J. Oper. Res.
Walter J. Gutjahr
2006 J jnl
Pareto ant colony optimization with ILP preprocessing in multiobjective project portfolio selection.
Eur. J. Oper. Res.
Karl F. Doerner, Walter J. Gutjahr, Richard F. Hartl, Christine Strauss, Christian Stummer
2005 — conf
Two Metaheuristics for Multiobjective Stochastic Combinatorial Optimization.
SAGA
Walter J. Gutjahr
2004 C conf
An ant system approach to Markov decision processes.
ACC
Hyeong Soo Chang, Walter J. Gutjahr, Jihoon Yang, Sungyong Park
2004 J jnl
Pareto Ant Colony Optimization: A Metaheuristic Approach to Multiobjective Portfolio Selection.
Ann. Oper. Res.
Karl F. Doerner, Walter J. Gutjahr, Richard F. Hartl, Christine Strauss, Christian Stummer
2004 — conf
S-ACO: An Ant-Based Approach to Combinatorial Optimization Under Uncertainty.
ANTS Workshop
Walter J. Gutjahr
2003 — conf
A Converging ACO Algorithm for Stochastic Combinatorial Optimization.
SAGA
Walter J. Gutjahr
2003 A conf
Extracting Test Sequences from a Markov Software Usage Model by ACO.
GECCO
Karl Doerner, Walter J. Gutjahr
2002 J jnl
A branch-and-bound approach to the optimization of redundant software under failure correlation.
Comput. Oper. Res.
Walter J. Gutjahr, Gabriele Uchida
2002 J jnl
ACO algorithms with guaranteed convergence to the optimal solution.
Inf. Process. Lett.
Walter J. Gutjahr
2002 J jnl
Using a Reliability Growth Model to Control Software Inspection.
Empir. Softw. Eng.
Stefan Biffl, Walter J. Gutjahr
2001 J jnl
A reliability model for nonhomogeneous redundant software versions with correlated failures.
Comput. Syst. Sci. Eng.
Walter J. Gutjahr
2001 — conf
Influence Of Team Size And Defect Detection Technique On Inspection Effectiveness.
IEEE METRICS
Stefan Biffl, Walter J. Gutjahr
2000 J jnl
A Graph-based Ant System and its convergence.
Future Gener. Comput. Syst.
Walter J. Gutjahr
2000 J jnl
A Stochastic Branch-and-Bound Approach to Activity Crashing in Project Management.
INFORMS J. Comput.
Walter J. Gutjahr, Christine Strauss, Eric W. Wagner
2000 J jnl
Crashing of stochastic processes by sampling and optimisation.
Bus. Process. Manag. J.
Walter J. Gutjahr, Christine Strauss, Martin Tóth
2000 J jnl
Representation and optimization of software usage models with non-Markovian state transitions.
Inf. Softw. Technol.
Karl Doerner, Walter J. Gutjahr
2000 J jnl
Software dependability evaluation based on Markov usage models.
Perform. Evaluation
Walter J. Gutjahr
1999 J jnl
Optimal stochastic single-machine-tardiness scheduling by stochastic branch-and-bound.
Eur. J. Oper. Res.
Walter J. Gutjahr, A. Hellmayr, Georg Ch. Pflug
1999 J jnl
Partition Testing vs. Random Testing: The Influence of Uncertainty.
IEEE Trans. Software Eng.
Walter J. Gutjahr
1998 A conf
Reliability optimization of redundant software with correlated failures.
ISSRE
Walter J. Gutjahr
1997 J jnl
An improved algorithm for finding minimum-risk 3-state-device networks.
Int. J. Comput. Math.
Walter J. Gutjahr, Ch. E. Wöber
1997 J jnl
Task Assignment in Cayley Interconnection Topologies.
Parallel Comput.
Walter J. Gutjahr, Martin Hitz, Thomas A. Mück
1996 B conf
Failure Risk Estimation via Markov Software Usage Models.
SAFECOMP
Walter J. Gutjahr
1996 J jnl
Simulated Annealing for noisy cost functions.
J. Glob. Optim.
Walter J. Gutjahr, Georg Ch. Pflug
1995 J jnl
Optimal Test Distributions for Software Failure Cost Estimation.
IEEE Trans. Software Eng.
Walter J. Gutjahr
1994 J jnl
A global optimization problem in series-parallel networks with maximum reliability.
J. Glob. Optim.
Walter J. Gutjahr
1994 J jnl
Connection Reliabilities in Stochastic Acyclic Networks.
Random Struct. Algorithms
Walter J. Gutjahr
1993 J jnl
Automatische Testdatengenerierung zur Unterstützung des Softwaretests.
Inform. Forsch. Entwickl.
Walter J. Gutjahr
1993 J jnl
Expectation Transfer between Branching Processes and Random Trees.
Random Struct. Algorithms
Walter J. Gutjahr
1992 J jnl
The Variance of Level Numbers in Certain Families of Trees.
Random Struct. Algorithms
Walter J. Gutjahr
1992 J jnl
The asymptotic distribution of leaf heights in binary trees.
Graphs Comb.
Walter J. Gutjahr, Georg Ch. Pflug
1992 J jnl
The limiting common distribution of two leaf heights in a random brinary tree.
RAIRO Theor. Informatics Appl.
Walter J. Gutjahr, Georg Ch. Pflug
1991 J jnl
Uniform random generation of expressions respecting algebraic identities.
Computing
Walter J. Gutjahr
2023 — conf
Not What You've Signed Up For: Compromising Real-World LLM-Integrated Applications with Indirect Prompt Injection.
AISec
Kai Greshake, Sahar Abdelnabi, Shailesh Mishra, Christoph Endres, Thorsten Holz, Mario Fritz
2026 — preprint
CCX: Enabling Unmodified Intel SGX Applications on Arm CCA.
arXiv
Matti Schulze, Thorsten Holz, Felix C. Freiling