1. Yannis Ioannidis MaDgIK Lab University of Athens & ATHENA Research Center

2. Behavior Pattern X-ction Analysis Adaptations Information Systems Profiling Profiles User/Context Model User/Context Model & Profile Management Extension Analysis Interpretation Adaptation Profile Selection Profile Selection Behavior Observations Application Adaptations Info Systems & Applications Application EnvironmentGeneric Platform Data mining Text analytics Stream analytics … Data mining Text analytics Stream analytics … Path computations Link prediction Datalog + functions … Path computations Link prediction Datalog + functions … Graph DBs User / Context modeling Spatiotemporal data … Graph DBs User / Context modeling Spatiotemporal data … Similarity search Pattern recognition Dynamicity … Similarity search Pattern recognition Dynamicity …

3. likes 0.3 likes ? director Avatar J. Cameron actor likes 0.9 matters 0.8 matters 0.1 Mary likes 0.37 likes 0.9 Jane trusts 0.9 Sigourney Weaver

4.  Elasticity: Speed of completion time reduction when more money is available Time Money Ε Ε