Invited Speakers -- Past, Present and Future of Ambient Intelligence and Smart Environments -- I: Artificial Intelligence -- Modelling Social Learning of Adolescence-Limited Criminal Behaviour -- How Do Emotions Induce Dominant Learners’ Mental States Predicted from Their Brainwaves? -- A Multiagent Semantics for the Game Description Language -- Verifying Context-Dependent Reduction Relations for Knowledge Specifications -- Combining Artificial Intelligence Techniques for the Training of Power System Control Centre Operators -- Adaptive State Space Abstraction Using Neuroevolution -- Goal-Based Game Tree Search for Complex Domains -- Generating Incomplete Data with DataZapper -- Extending Learning Vector Quantization for Classifying Data with Categorical Values -- Action Knowledge Acquisition with Opmaker2 -- Application of Hidden Topic Markov Models on Spoken Dialogue Systems -- Gossip Galore: An Embodied Conversational Agent for Collecting and Sharing Pop Trivia from the Web -- Biosignal Based Discrimination between Slight and Strong Driver Hypovigilance by Support-Vector Machines -- II: Agents -- Tiered Logic for Agents in Contexts -- HomeManager: Testing Agent-Oriented Software Engineering in Home Intelligence -- Developing Multi-Agent Systems through Integrating Prometheus, INGENIAS and ICARO-T -- An Efficient Winner Approximation for a Series of Combinatorial Auctions -- How to Integrate Personalization and Trust in an Agent Network -- Modeling Two Stage Preventive Medical Checkup Systems with Social Science Approaches -- Translating Discrete Multi-Agents Systems into Cellular Automata: Application to Diffusion-Limited Aggregation -- Using Values to Turn Agents into Characters.

This volume constitutes the thoroughly refereed post-conference proceedings of the International Conference on Agents and Artificial Intelligence, ICAART 2009, held in Porto, Portugal, in January 2009. The 21 revised full papers presented together with one invited paper were carefully reviewed and selected from 161 papers. Based on the same structure as the conference, the book is organized in two simultaneous tracks: Artificial Intelligence and Agents.