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Walter J. Gutjahr
Researcher at University of Vienna
Publications - 111
Citations - 6046
Walter J. Gutjahr is an academic researcher from University of Vienna. The author has contributed to research in topics: Metaheuristic & Stochastic optimization. The author has an hindex of 38, co-authored 107 publications receiving 5456 citations. Previous affiliations of Walter J. Gutjahr include Sogang University.
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A survey on metaheuristics for stochastic combinatorial optimization
TL;DR: In this paper metaheuristics such as Ant Colony Optimization, Evolutionary Computation, Simulated Annealing, Tabu Search and others are introduced, and their applications to the class of Stochastic Combinatorial Optimization Problems (SCOPs) is thoroughly reviewed.
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Pareto Ant Colony Optimization: A metaheuristic approach to multiobjective portfolio selection
TL;DR: In this article, the authors introduce Pareto Ant Colony Optimization as an especially effective meta-heuristic for solving the portfolio selection problem and compare its performance to other heuristic approaches by means of computational experiments with random instances.
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A Graph-based Ant system and its convergence
TL;DR: It is shown that under certain conditions, the solutions generated in each iteration of this Graph-based Ant System converge with a probability that can be made arbitrarily close to 1 to the optimal solution of the given problem instance.
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ACO algorithms with guaranteed convergence to the optimal solution
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A math-heuristic for the warehouse location-routing problem in disaster relief
Stefan Rath,Walter J. Gutjahr +1 more
TL;DR: To solve the single-objective constrained optimization problem, an exact solution method as well as a ''math-heuristic'' technique building on a MILP formulation with a heuristically generated constraint pool are proposed.