Search Results - "Toffolo, Tulio"

Weapon-target assignment problem: exact and approximate solution algorithms by Andersen, Alexandre Colaers, Pavlikov, Konstantin, Toffolo, Túlio A. M.

“…The Weapon-Target Assignment (WTA) problem aims to assign a set of weapons to a number of assets (targets), such that the expected value of survived targets is…”
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Heuristics for vehicle routing problems: Sequence or set optimization? by Toffolo, Túlio A.M., Vidal, Thibaut, Wauters, Tony

“…•We study decision-set decompositions in vehicle routing heuristics.•We use Balas & Simonetti’s dynamic programming to define different search spaces.•We…”
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A two-dimensional heuristic decomposition approach to a three-dimensional multiple container loading problem by Toffolo, Túlio A.M., Esprit, Eline, Wauters, Tony, Vanden Berghe, Greet

“…•A heuristic decomposition is presented for a real-world container loading problem.•Experiments on the influence of the components of the algorithm are…”
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Compatibility of short and long term objectives for dynamic patient admission scheduling by Zhu, Yi-Hang, Toffolo, Túlio A. M., Vancroonenburg, Wim, Vanden Berghe, Greet

“…•A full Mixed Integer Programming (MIP) formulation is provided for the DPAS.•A short term objective design principle is introduced for dynamic scheduling.•A…”
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Stochastic local search with learning automaton for the swap-body vehicle routing problem by Toffolo, Túlio A.M., Christiaens, Jan, Van Malderen, Sam, Wauters, Tony, Vanden Berghe, Greet

“…•This paper presents the algorithm for the Swap-Body Vehicle Routing Problem (SB-VRP) that won the First VeRoLog Solver Challenge.•The majority of the…”
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The sport teams grouping problem by Toffolo, Túlio A. M., Christiaens, Jan, Spieksma, Frits C. R., Vanden Berghe, Greet

“…The sport teams grouping problem (STGP) concerns the assignment of sport teams to round-robin tournaments. The objective is to minimize the total travel…”
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A fix-and-optimize heuristic for the ITC2021 sports timetabling problem by Fonseca, George H. G., Toffolo, Túlio A. M.

“…This paper addresses the general and challenging Sports Timetabling Problem proposed during the International Timetabling Competition of 2021 (ITC2021). The…”
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The vessel swap-body routing problem by Gandra, Vinícius S.M., Çalık, Hatice, Toffolo, Túlio A.M., Carvalho, Marco Antonio M., Vanden Berghe, Greet

“…•We introduce the vessel swap-body routing problem.•We investigate the impact of body transfers on the search space and the solution quality.•We provide an…”
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Branch-and-bound with decomposition-based lower bounds for the Traveling Umpire Problem by Toffolo, Túlio A.M., Wauters, Tony, Van Malderen, Sam, Vanden Berghe, Greet

“…•An exact algorithm based on a decomposition scheme is presented for the problem.•Optimal solutions for all 14-team and several 16-team TUP instances were…”
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A fix-and-optimize heuristic for the Unrelated Parallel Machine Scheduling Problem by Fonseca, George H.G., Figueiroa, Guilherme B., Toffolo, Túlio A.M.

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The impact of loading restrictions on the two-echelon location routing problem by Gandra, Vinícius Martins Santos, Çalık, Hatice, Wauters, Tony, Toffolo, Túlio A.M., Carvalho, Marco Antonio M., Vanden Berghe, Greet

“…•We consider the two-echelon location routing problem with loading constraints.•We investigate the impact of loading constraints on the solution.•We provide an…”
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Exact and heuristic approaches to Truck–Drone Delivery Problems by Júlia C. Freitas, Puca Huachi V. Penna, Túlio A.M. Toffolo

“…Collaborative delivery employing drones in last-mile delivery has been an extensively studied topic in recent years. In this paper, it is studied Truck–Drone…”
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Analysis of stochastic local search methods for the unrelated parallel machine scheduling problem by Santos, Haroldo G., Toffolo, Túlio A.M., Silva, Cristiano L.T.F., Vanden Berghe, Greet

“…This work addresses the unrelated parallel machine scheduling problem with sequence‐dependent setup times, in which a set of jobs must be scheduled for…”
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Integer programming techniques for the nurse rostering problem by Santos, Haroldo G., Toffolo, Túlio A. M., Gomes, Rafael A. M., Ribas, Sabir

“…This work presents integer programming techniques to tackle the problem of the International Nurse Rostering Competition. Starting from a compact and…”
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Branch-and-cut and hybrid local search for the multi-level capacitated minimum spanning tree problem by Uchoa, Eduardo, Toffolo, Túlio A. M., de Souza, Mauricio C., Martins, Alexandre X., Fukasawa, Ricardo

“…We propose algorithms to compute tight lower bounds and high quality upper bounds (UBs) for the multilevel capacitated minimum spanning tree problem. We first…”
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Exact methods for three-dimensional cutting and packing: A comparative study concerning single container problems by Silva, Everton Fernandes, Toffolo, Túlio Angelo Machado, Wauters, Tony

“…•Most notable exact methods proposed in the literature have difficulties to optimally solve medium-sized instances.•Container dimensions and number of allowed…”
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An integer programming approach to the multimode resource-constrained multiproject scheduling problem by Toffolo, Túlio A. M., Santos, Haroldo G., Carvalho, Marco A. M., Soares, Janniele A.

“…The project scheduling problem (PSP) is the subject of several studies in computer science, mathematics, and operations research because of the hardness of…”
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The double traveling salesman problem with partial last‐in‐first‐out loading constraints by Chagas, Jonatas B. C., Toffolo, Túlio A. M., Souza, Marcone J. F., Iori, Manuel

“…In this paper, we introduce the double traveling salesman problem with partial last‐in‐first‐out loading constraints (DTSPPL). It is a pickup‐and‐delivery…”
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Crane-operated warehouses: Integrating location assignment and crane scheduling by Heshmati, Sam, Toffolo, Túlio A.M., Vancroonenburg, Wim, Vanden Berghe, Greet

“…•Location assignment and multi-crane scheduling integrated in one optimization model.•A single working area shared by cranes which cannot pass one another is…”
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GOAL solver: a hybrid local search based solver for high school timetabling by da Fonseca, George Henrique Godim, Santos, Haroldo Gambini, Toffolo, Túlio Ângelo Machado, Brito, Samuel Souza, Souza, Marcone Jamilson Freitas

“…This work presents a local search approach to the High School Timetabling Problem. The addressed timetabling model is the one stated in the Third International…”
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