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Richard F. Hartl
Researcher at University of Vienna
Publications - 314
Citations - 16091
Richard F. Hartl is an academic researcher from University of Vienna. The author has contributed to research in topics: Vehicle routing problem & Metaheuristic. The author has an hindex of 58, co-authored 305 publications receiving 14198 citations. Previous affiliations of Richard F. Hartl include Vienna University of Technology & Otto-von-Guericke University Magdeburg.
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A survey of the maximum principles for optimal control problems with state constraints
TL;DR: The relations between the different sets of optimality conditions arising in Pontryagin's maximum principle are shown and the application of these maximum principle conditions is demonstrated by solving some illustrative examples.
A new rank based version of the ant system: a computational study
TL;DR: It turns out that the new rank based ant system can compete with the other methods in terms of average behavior, and shows even better worst case behavior.
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A survey on pickup and delivery problems: Part II: Transportation between pickup and delivery locations
TL;DR: Single as well as multi vehicle mathematical problem formulations for all three VRPPD types are given, and the respective exact, heuristic, and metaheuristic solution methods are discussed.
Journal ArticleDOI
An improved Ant System algorithm for theVehicle Routing Problem
TL;DR: An improved ant system algorithm for the Vehicle RoutingProblem with one central depot and identical vehicles is presented and a comparison with five other metaheuristic approaches for solving Vehicle Routed Problems is given.
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A survey on pickup and delivery problems
TL;DR: This paper is the first part of a comprehensive survey on pickup and delivery problems and the corresponding exact, heuristic, and metaheuristic solution methods are discussed.