Evolutionary Computation in Combinatorial Optimization (vol. # 3906) : 6th European Conference EvoCOP 2006 Budapest Hungary April 10 12 2006 Proceedings Hybrid Genetic Algorithm Within Branch and Cut for the Minimum Graph Bisection Problem The Trade Off Between Diversity and Quality for Multi objective Workforce Scheduling Evolving the Structure of the Particle Swarm Optimization Algorithms A Tabu Search Algorithm for Optimization of Gas Distribution Networks Design of a Retail Chain Stocking Up Policy with a Hybrid Evolutionary Algorithm Parametrized GRASP Heuristics for Three Index Assignment A Memetic Algorithm with Bucket Elimination for the Still Life Problem Effects of Scale Free and Small World Topologies on Binary Coded Self adaptive CEA Particle Swarm for the Traveling Salesman Problem Hierarchical Cellular Genetic Algorithm Improving Graph Colouring Algorithms and Heuristics Using a Novel Representation Minimizing Makespan on a Single Batch Processing Machine with Non identical Job Sizes: A Hybrid Genetic Approach A Relation Algebraic View on Evolutionary Algorithms for Some Graph Problems New Computational Results for the Nurse Scheduling Problem: A Scatter Search Algorithm Fast EAX Algorithm Considering Population Diversity for Traveling Salesman Problems A Memetic Algorithm with Population Management (MA PM) for the Capacitated Location Routing Problem The Core Concept for the Multidimensional Knapsack Problem Multiobjective Scheduling of Jobs with Incompatible Families on Parallel Batch Machines A Memetic Algorithm for the Biobjective Minimum Spanning Tree Problem A Comparative Study of Ant Colony Optimization and Reactive Search for Graph Matching Problems Divide and Evolve: A New Memetic Scheme for Domain Independent Temporal Planning A Variable Neighbourhood Search Algorithm for Job Shop Scheduling Problems An Efficient Hybrid Search Algorithm for Various Optimization Problems A Hybrid VNS Tabu Search Algorithm for Apportioning the European Parliament.