This paper introduces a bi-objective winner-determination problem and presents a multiobjectivegenetic algorithm to solve it. The problem examined arises in the procurement of transportation contractsvia combinatorial auctions. It is modeled as an extension to the set-covering problem and...

The Pickup and Delivery Problem with Time Windows (PDPTW) is a generalization of the well studied Vehicle Routing Problem with Time Windows (VRPTW). Since it models several typical planning situations in operational transportation logistics and public transit, the PDPTW has attracted growing...

Der Beitrag stellt das Konzept eines genetischen Algorithmus (GA) für ein dynamisches Dispositionsproblem vor, das als Verallgemeinerung der Planungssituation einer Teilladungsspedition im Gelegenheitsverkehr aufgefaßt werden kann. Im Unterschied zu verwandten Problemen in der Literatur wird...

The paper presents a tree search algorithm for the three-dimensional container loading problem(3D-CLP). The 3D-CLP is the problem of loading a subset of a given set of rectangularboxes into a rectangular container so that the packed volume is maximized. The method hastwo variants: the packing...

Given a set of rectangular pieces and a rectangular container, the two-dimensional knapsackproblem (2D-KP) consists of orthogonally packing a subset of the pieces within the container suchthat the sum of the values of the packed pieces is maximized. If the value of a piece is given by itsarea...

Der Beitrag präsentiert einen hybriden genetischen Algorithmus für das Containerbeladeproblem mit quaderförmigen Packstücken verschiedener Größe und einem zu beladenden Container. Erzeugte Staupläne umfassen mehrere vertikale Schichten, in denen jeweils einige Kisten plaziert sind....

Given a finite set of circles of different sizes we study the Strip Packing Problem (SPP) as well as the Knapsack Problem (KP). The SPP asks for a placement of all circles (without overlap) within a rectangular strip of fixed width so that the variable length of the strip is minimized. The KP...

The paper presents a genetic algorithm (GA) for the two-dimensional strip-packing problem (SPP) with rectangular shaped pieces. Both the non-guillotinable SPP and the guillotinable SPP can be tackled. The genetic algorithm has been derived from a GA that was proposed earlier for solving the...

In this contribution, a parallel hybrid local search algorithm for the three-dimensional container loading problem (CLP) is proposed. First a simulated annealing method for the CLP is developed, which is then combined with an existing tabu search algorithm to form a hybrid metaheuristic....