Constitutes the refereed proceedings of the 28th Annual German Conference on Artificial Intelligence, KI 2005, held in Germany. This work presents papers organized in topical sections on knowledge representation and reasoning, machine learning, diagnosis, neural networks, planning, robotics, and cognitive modeling, philosophy, natural language.

Invited Talks.- Hierarchy in Fluid Construction Grammars.- Description Logics in Ontology Applications.- 175 Miles Through the Desert.- Knowledge Representation and Reasoning.- A New n-Ary Existential Quantifier in Description Logics.- Subsumption in w.r.t. Hybrid TBoxes.- Dependency Calculus: Reasoning in a General Point Relation Algebra.- Temporalizing Spatial Calculi: On Generalized Neighborhood Graphs.- Machine Learning.- Design of Geologic Structure Models with Case Based Reasoning.- Applying Constrained Linear Regression Models to Predict Interval-Valued Data.- On Utilizing Stochastic Learning Weak Estimators for Training and Classification of Patterns with Non-stationary Distributions.- Noise Robustness by Using Inverse Mutations.- Diagnosis.- Development of Flexible and Adaptable Fault Detection and Diagnosis Algorithm for Induction Motors Based on Self-organization of Feature Extraction.- Computing the Optimal Action Sequence by Niche Genetic Algorithm.- Diagnosis of Plan Execution and the Executing Agent.- Automatic Abstraction of Time-Varying System Models for Model Based Diagnosis.- Neural Networks.- Neuro-Fuzzy Kolmogorov’s Network for Time Series Prediction and Pattern Classification.- Design of Optimal Power Distribution Networks Using Multiobjective Genetic Algorithm.- New Stability Results for Delayed Neural Networks.- Planning.- Metaheuristics for Late Work Minimization in Two-Machine Flow Shop with Common Due Date.- An Optimal Algorithm for Disassembly Scheduling with Assembly Product Structure.- Hybrid Planning Using Flexible Strategies.- Controlled Reachability Analysis in AI Planning: Theory and Practice.- Robotics.- Distributed Multi-robot Localization Based on Mutual Path Detection.- Modeling Moving Objects in a Dynamically Changing RobotApplication.- Heuristic-Based Laser Scan Matching for Outdoor 6D SLAM.- A Probabilistic Multimodal Sensor Aggregation Scheme Applied for a Mobile Robot.- Behavior Recognition and Opponent Modeling for Adaptive Table Soccer Playing.- Cognitive Modelling / Philosopy / Natural Language.- Selecting What Is Important: Training Visual Attention.- Self-sustained Thought Processes in a Dense Associative Network.- Why Is the Lucas-Penrose Argument Invalid?.- On the Road to High-Quality POS-Tagging.