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pro vyhledávání: '"Hartl, Richard"'
Organizations providing home care services are inclined to optimize their activities in order to meet the constantly increasing demand for home care. In this context, home care providers are confronted with multiple, often conflicting, objectives suc
Publikováno v:
Eur. J. Oper. Res., 306, 1081-1093 (2023)
We consider the vehicle routing problem with stochastic demands (VRPSD), a stochastic variant of the well-known VRP in which demands are only revealed upon arrival of the vehicle at each customer. Motivated by the significant recent progress on VRPSD
Externí odkaz:
http://arxiv.org/abs/2302.02538
The efficient organization of waste collection systems based on bins located along the streets involves the solution of several tactical optimization problems. In particular, the bin configuration and sizing at each collection site as well as the ser
Autor:
Mlekusch, Johanna1 (AUTHOR) johanna.mlekusch@univie.ac.at, Hartl, Richard F.1 (AUTHOR)
Publikováno v:
International Journal of Production Research. Aug2024, p1-22. 22p. 5 Illustrations.
This paper considers a real world waste collection problem in which glass, metal, plastics, or paper is brought to certain waste collection points by the citizens of a certain region. The collection of this waste from the collection points is therefo
Externí odkaz:
http://epub.wu.ac.at/5519/1/Hemmelmayr_etal_2013_JH_A%2Dheuristic%2Dsolution%2Dmethod.pdf
In this paper we present and analyze the application of an Ant System to the Vehicle Routing Problem with Backhauls and Time Windows (VRPBTW). At the core of the algorithm we use an Insertion procedure to construct solutions. We provide results on th
Externí odkaz:
http://epub.wu.ac.at/1724/1/document.pdf
Autor:
Hartl, Richard
Der Bundesverkehrswegeplan (BVWP) stellt das zentrale Instrument zur Gestaltung des Verkehrs und der Mobilität in Deutschland dar. Der aktuelle BVWP 2030 sieht sich in Wissenschaft und Politik ebenso wie vorherige Fassungen des Plans der Kritik ausg
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A78376
https://tud.qucosa.de/api/qucosa%3A78376/attachment/ATT-0/
https://tud.qucosa.de/api/qucosa%3A78376/attachment/ATT-0/
Publikováno v:
In European Journal of Operational Research 1 November 2024 318(3):966-978
In this paper we propose a multi-colony Ant System, where the colonies solve a multi-objective optimization problem concerned with goods transportation. The colonies differ from each other by the heuristic information, which guides their search throu
Externí odkaz:
http://epub.wu.ac.at/1660/1/document.pdf
Autor:
Doerner, Karl, Gronalt, Manfred, Hartl, Richard F., Reimann, Marc, Strauß, Christine, Stummer, Michael
In this paper we propose a hybrid approach for solving vehicle routing problems. The main idea is to combine an Ant System (AS) with a problem specific constructive heuristic, namely the well known Savings algorithm. This differs from previous approa
Externí odkaz:
http://epub.wu.ac.at/1130/1/document.pdf