The Ant System is a new meta-heuristic method particularly appropriate to solve hard combinatorial optimization problems. It is a population-based, nature-inspired approach exploiting positive feedback as well as local information and has been applied successfully to a variety of combinatorial...

In manual order picking systems, order pickers walk or drive through a distribution warehouse inorder to collect items which are requested by (internal or external) customers. In order to performthese operations efficiently, it is usually required that customer orders are combined into (more...

Der vorliegende Beitrag präsentiert die Ergebnisse einer Analyse zur Wahl eines geeigneten Artikelanordnungsmusters (Längs-, Quer-, Radialanordnung) bei gegebenen, in der Praxis häufig anzutreffenden Problemparametern....

Der vorliegende Beitrag präsentiert die Ergebnisse einer Analyse zur Auswahleines geeigneten Artikelanordnungsmusters (Längs-, Quer-, Radialanordnung) bei gegebenen,in der Praxis häufig anzutreffenden Problemparametern. Die numerischen Ergebnisse zeigenfür ein gegebenes Lagersystem, dass die...

In manual order picking systems, order pickers walk or drive through a distribution warehouse in order to collect items which are requested by (internal or external) customers. In order to perform these operations efficiently, it is usually required that customer orders are combined into (more...

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 approaches, where the subordinate heuristic was the...