User Mobility Changing needs Unpredictability Components and services Composability Unpredictable availability Environment Uncertainty Instability How to provide working and relevant composite services? Distributed learning from user feedback Announcement-based interaction protocol ARSA Multi-Agent System Decentralized decision Emergence of new composite services Environment-directed automatic service composition Dynamic and continuous adaptation to the context and the user Online reinforcement distributed learning Consideration of new appearing services User ENVIRONMENT OCE State (Sensed services)