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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260513T015946Z DTSTART;VALUE=DATE-TIME:20181217T110000 DTEND;VALUE=DATE-TIME:20181217T120000 SUMMARY:Seminar: Manos Papagelis\, York University\, CA TZID:Europe/London UID:20181217-8a17841a66c4e3b70166e4f3674022e5@warwick.ac.uk CREATED:20181204T131907Z DESCRIPTION:Title: Trajectory Network Mining Abstract: Trajectory data mi ning has been of increasing research interest due to an abundance of mod ern tracking devices and a number of real-world applications. Likewise\, large-scale network mining has attracted significant attention as it he lps to reveal underlying dynamics of networks. In our research\, we are interested in mining and analysis of large-scale trajectory networks - n etworks where the nodes are moving objects (cars\, pedestrians\, etc.) a nd the edges represent contacts between objects as defined by a proximit y threshold. In the first part of the talk\, I will discuss the problem of mining group patterns in trajectories of pedestrians coming from moti on video analysis. We are interested in interactive analysis and explora tion of group dynamics\, including various semantics of group gathering and dispersion. In the second part of the talk\, I will discuss methods for evaluating the importance of moving objects (nodes) in a trajectory network. To address these questions we devise fast and accurate methods for concurrent evaluation of dynamic network metrics including node degr ee\, triangle membership and connected components for each moving object \, over time. If time allows\, I will also discuss our recent work on ne twork representation learning. Lately\, these methods have been shown to perform very well on static networks. However\, in real-world\, network s are continuously evolving. I will discuss a random-walk based method f or effectively learning representations of evolving networks. LOCATION:MB 0.08 CATEGORIES: LAST-MODIFIED:20181204T131907Z ORGANIZER;CN=Sara Kalvala: END:VEVENT END:VCALENDAR