The electure portal an advanced archive for lecture recordings
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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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The electure portal an advanced archive for lecture recordings
The eLecture PortalAn Advanced Archive for Lecture Recordings

Christoph Hermann, Wolfgang Hürst, Martina WelteInstitut für InformatikAlbert-Ludwigs-Universität Freiburg

hermann@informatik.uni-freiburg.de


Overview
Overview

  • Learning with eLectures

  • The eLecture-Portal

    • Archiving

    • Searching

    • Podcasting

  • Future Developments

Christoph Hermann - Universität Freiburg - Institut für Informatik


Learning with electures
Learning with eLectures

  • Current situation:almost all lectures are recorded

Christoph Hermann - Universität Freiburg - Institut für Informatik


Production
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


The electure portal archiving
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


Searching
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


Getting the most out of the documents
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


Some statistics
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


Current work podcasting
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


Conclusion outlook
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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