Using Argumentation to Structure E-Participation in Policy Making -- Horizontal Business Process Model Integration -- Exact and Approximate Generic Multi-criteria Top-k Query Processing -- Continuous Predictive Line Queries for On-the-Go Traffic Estimation -- Query Operators for Comparing Uncertain Graphs -- Fast Disjoint and Overlapping Community Detection -- A Hybrid Approach Using Genetic Programming and Greedy Search for QoS-Aware Web Service Composition.