Invited Talks -- Coupling Design and Verification in Software Product Lines -- Random Geometric Identification -- Strategic Abilities of Agents -- Regular Papers -- Aggregation of Attack Relations: A Social-Choice Theoretical Analysis of Defeasibility Criteria -- Alternative Characterizations for Program Equivalence under Answer-Set Semantics Based on Unfounded Sets -- An Alternative Foundation for DeLP: Defeating Relations and Truth Values -- Appropriate Reasoning about Data Dependencies in Fixed and Undetermined Universes -- Autonomous Sets – A Method for Hypergraph Decomposition with Applications in Database Theory -- Cost-Minimising Strategies for Data Labelling: Optimal Stopping and Active Learning -- Information-Optimal Reflections of View Updates on Relational Database Schemata -- Merging First-Order Knowledge Using Dilation Operators -- On the Existence of Armstrong Instances with Bounded Domains -- Reasoning on Data Models in Schema Translation -- Tightly Integrated Probabilistic Description Logic Programs for Representing Ontology Mappings -- Using Transversals for Discovering XML Functional Dependencies -- Visibly Pushdown Transducers for Approximate Validation of Streaming XML -- A Probabilistic Logic with Polynomial Weight Formulas -- A Transformation-Based Approach to View Updating in Stratifiable Deductive Databases -- Algorithms for Effective Argumentation in Classical Propositional Logic: A Connection Graph Approach -- Database Preferences Queries – A Possibilistic Logic Approach with Symbolic Priorities -- Defeasible Reasoning and Partial Order Planning -- Lossless Decompositions in Complex-Valued Databases -- SIM-PDT: A Similarity Based Possibilistic Decision Tree Approach -- Towards a Logic for Abstract MetaFinite State Machines -- Towards a Fuzzy Logic for Automated Multi-issue Negotiation.