70 citations · 1.1k across the 129 of their papers we have counts for
11 papers · 1 filter
An exact column-generation approach for the lot-type design problem
Miriam Kießling, Sascha Kurz, Jörg Rambau
We consider a fashion discounter distributing its many branches with integral multiples from a set of available lot-types. For the problem of approximating the branch and size depe…
Dimension of the Lisbon voting rules in the EU Council: a challenge and new world record
Sascha Kurz, Stefan Napel
The new voting system of the Council of the European Union cannot be represented as the intersection of six or fewer weighted games, i.e., its dimension is at least 7. This sets a…
Optimal Opinion Control: The Campaign Problem
Rainer Hegselmann, Stefan König, Sascha Kurz +2
Opinion dynamics is nowadays a very common field of research. In this article we formulate and then study a novel, namely strategic perspective on such dynamics: There are the usua…
Minimal proper non-IRUP instances of the one-dimensional Cutting Stock Problem
Vadim M. Kartak, Sascha Kurz, Artem V. Ripatti +1
We consider the well-known one dimensional cutting stock problem (1CSP). Based on the pattern structure of the classical ILP formulation of Gilmore and Gomory, we can decompose the…
The Integrated Size and Price Optimization Problem
Miriam Kießling, Sascha Kurz, Jörg Rambau
We present the Integrated Size and Price Optimization Problem (ISPO) for a fashion discounter with many branches. Based on a two-stage stochastic programming model with recourse, w…
Evaluation of a new supply strategy based on stochastic programming for a fashion discounter
Miriam Kießling, Tobias Kreisel, Sascha Kurz +1
Fashion discounters face the problem of ordering the right amount of pieces in each size of a product. The product is ordered in pre-packs containing a certain size-mix of a produc…
Squaring the square with integer linear programming
Sascha Kurz
We consider so-called squaring the square-puzzles where a given square (or rectangle) should be dissected into smaller squares. For a specific instance of such problems we demonstr…
The combinatorics of S, M, L, XL - The best fitting delivery of T-shirts
Constantin Gaul, Sascha Kurz, Jörg Rambau
We consider the problem of approximating the branch and size dependent demand of a fashion discounter with many branches by a distributing process being based on the branch deliver…
The nucleolus of large majority games
Sascha Kurz, Stefan Napel, Andreas Nohn
Members of a shareholder meeting or legislative committee have greater or smaller voting power than meets the eye if the nucleolus of the induced majority game differs from the vot…
The Top-Dog Index: A New Measurement for the Demand Consistency of the Size Distribution in Pre-Pack Orders for a Fashion Discounter with Many Small Branches
Sascha Kurz, Joerg Rambau, Joerg Schluechtermann +1
We propose the new Top-Dog-Index, a measure for the branch-dependent historic deviation of the supply data of apparel sizes from the sales data of a fashion discounter. A common ap…
Lotsize optimization leading to a -median problem with cardinalities
Constantin Gaul, Sascha Kurz, Joerg Rambau
We consider the problem of approximating the branch and size dependent demand of a fashion discounter with many branches by a distributing process being based on the branch deliver…