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The eLecture Portal An Advanced Archive for Lecture Recordings

The eLecture Portal An Advanced Archive for Lecture Recordings. Christoph Hermann , Wolfgang Hürst, Martina Welte Institut für Informatik Albert-Ludwigs-Universität Freiburg hermann@informatik.uni-freiburg.de. Overview. Learning with eLectures The eLecture-Portal Archiving Searching

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The eLecture Portal An Advanced Archive for Lecture Recordings

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  1. The eLecture PortalAn Advanced Archive for Lecture Recordings Christoph Hermann, Wolfgang Hürst, Martina WelteInstitut für InformatikAlbert-Ludwigs-Universität Freiburg hermann@informatik.uni-freiburg.de

  2. Overview • Learning with eLectures • The eLecture-Portal • Archiving • Searching • Podcasting • Future Developments Christoph Hermann - Universität Freiburg - Institut für Informatik

  3. Learning with eLectures • Current situation:almost all lectures are recorded Christoph Hermann - Universität Freiburg - Institut für Informatik

  4. Production • Live-recording during the lecture using a microphone and a “Wacom desk” • Only minor postprocessing by one student required; mostly automatic • A few hours after the lecturethe recordings are online Christoph Hermann - Universität Freiburg - Institut für Informatik

  5. The eLecture-Portal: Archiving • Archival of the entire computer science curriculum • Other disciplines are also listed (Microsystems Engineering, Psychology...) Christoph Hermann - Universität Freiburg - Institut für Informatik

  6. Searching • Automatic indexing of all lectures • Slides • Metadata • Audio • Automatic speech transcription to index additional data • Mapping of original slides to the recorded document • Optimized user interface (e.g. “one-click” access to position of the “hit“) Christoph Hermann - Universität Freiburg - Institut für Informatik

  7. Getting the most out of the documents • Analyzing metadata • title, author, date, ... • additional manual editing is too time expensive • Grabbed presentations=> matching of original slides with the recorded presentation • Audio transcription • audio extraction • automatic processing of the recorded speech to textual information • indexing files Christoph Hermann - Universität Freiburg - Institut für Informatik

  8. Some statistics • Whole computer science curriculum can be accessed online • One lecture has between 10 and 100mb (varies depending on the format) • ~ 50.000 visits this year already (~ 5000 visits/month) • ~ 6000 hits/day • 25 TB data downloaded (in 2006 so far) • ~ 3-600 gb/month Christoph Hermann - Universität Freiburg - Institut für Informatik

  9. Current Work: Podcasting • Converting the recorded lectures to podcasts • RSS Feeds to inform the Students about new Recordings Christoph Hermann - Universität Freiburg - Institut für Informatik

  10. Conclusion/Outlook • Heavy use of the portal by our students • Problem of handling such a large amount of data • Consider enhancing and changing technologies (e.g. Podcasting) • Permission problem • Professors don‘t want their material to be accessible by everyone • Property rights? • Stealing/trading of contents Christoph Hermann - Universität Freiburg - Institut für Informatik

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