1. Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Martin Malchow, Matthias Bauer, Christoph Meinel Hasso Plattner Institute, Potsdam, Germany The 43rd ACM Special Interest Group on University and College Computing Services SIGUCCS 2015 St. Petersburg, Florida, USA - November 9-13, 2015

2.  …IT Systems Engineering – 10 professors and chairs – 150 lecturers, assistant professors and scientific colleagues – 500 Bachelor- and Master students – 120 PhD students  HPI School of Design Thinking: 240 students from different disciplines Brief Introduction – The Hasso Plattner Institute for … Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 2 Martin Malchow

3. Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 3 tele-TASK – Lecture Archive of HPI Recording System ■ Research project for currently 4 PhD students, 1 Post-Doc □ Topics: e-learning, web 2.0, video analysis, learning analytics, … ■ Supported by 8 student assistants plus occasionally students working on their Bachelor or Master thesis or on a seminar project ■ Products: Recording System, Post-Production Tool, Web Portal

4. Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 4 tele-TASK – Lecture Archive of HPI Web Portal ■ Powerful search function ■ Slide OCR detection ■ HTML5/Flash Player ■ Community & social web features ■ Create personal tags ■ Rating of lectures ■ Create own playlists ■ Save annotations and markers to videos as links to the exact position in the e-lecture

5. Massive Open Online Course (MOOC) openHPI Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 5

6. openHPI – The MOOC platform of the HPI Course structure and functions Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 6 Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Exam Video Learning material Self-testsHomework Discussion forum Martin Malchow

7. Our e-Learning Motivation Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 7 Long-term experience in the research topic „Web-University“, teleTASK Excellent teaching at the HPI  „Design IT. Create Knowledge.“ not only on site but also online Accompanying applied research on the future of lifelong learning - User behaviour - Motivation - Social Learning - Innovative forms of learning Martin Malchow

8. tele-TASK Lecture Video Archive and iTunes U ■ tele-TASK.de portal tele-TASK.de □ ≈ 454 lecture series □ ≈ 5 495 lectures □ ≈ 21 824 podcasts □ ≈ 2 135 speaker □ ≈ 35 million clicks ■ HPI @ iTunes U □ ≈ 130 collections □ ≈ 10 800 items □ ≈ 5.1 millionen downloads since start in 2009 Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 8

9. tele-TASK eLearning at iTunes U Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 9

10. tele-TASK Students – Digital Lecture Script Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 10

11. Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 11 tele-TASK Student Self-Tests

12. tele-TASK Automatic Lecture Analysis Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 12 Martin Malchow

13. ■ Lecture archives growing up over the years ■ tele-TASK is offering 5500 lectures with different level of difficulty ■ Searchable by title, lecture OCR content with In-Memory Database ■ Add Lecture Butler current search using addition lecture data □ Level of difficulty □ Information of same lecture from previous years □ Show relevant parts of a lecture □ Show additional close topics of a lecture  Is the Lecture Butler offering enhancement for the students? Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 13 Motivation to establish the Lecture Butler

14. Slide 1 Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 14 Approach Preparing OCR Data Slidetext 1 Slidetext 2 Slidetext 3 Slidetext 4 Slidetext 1Slidetext 2Slidetext 3Slidetext 4 Slide 1Slide 2Slide 3Slide 4Slide 5Slide X… DB

15. Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 15 Approach System Architecture

16. ■ Determine level of difficulty □ Course advisor have to decide on a scale from 1 (easy) to 10 (hard) for a level of difficulty for a course □ Level of difficulty is set by university course schedule ■ Reduce effort for earlier courses □ Connect same predecessor courses □ Level of difficulty can be copied automatically Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 16 Approach Level of Difficulty

17. Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 17 Approach Network of Connected Words World Wide Web WebDAVCERN Web 2.0 HTTP Web Server … ■ Build with DBpedia information ■ Use property “wikiPageWikiLink” and preprocess OCR detected keywords ■ Save network into database

18. Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 18 Approach Synonym Structure World Wide Web * W3WWW ■ Different words can have the same meaning for the learner ■ Find Synonyms for words in the network of connected words ■ Use synonyms.net API ■ Mark main words

19. Approach Search Custom Lecture Collection Search Area of Interest (Term) Select Lecture Butler Option Display resulting playlist Lecture OnlySection of LecturesDive into the topic Dive deep into the topic Full text search (with OCR Data) Find Top 10 results Order by semester / level of difficulty Full text search (with OCR Data) Find Top 10 results Order by semester / level of difficulty Get sections where slide content matches term Find most appropriate lecture for searched term Search in lecture collection (series) all words Find synonyms for the term Find matching direct connected words Student deselects topics already known Get sections where slide content matches selected words Find most appropriate lecture for searched term Search in lecture collection (series) all words Find synonyms for the term Find matching connected words up to 3-level depth Student deselects topics already known Get sections where slide content matches selected words

20. Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 20 Aproach Example

21. Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 21 Evaluation

22. ■ Student evaluation shows user acceptance and enhancement of the approach □  Lecture Butler enhance students learning experience in lecture archives ■ Search “Automatic Speech Recognition” (ASR) content additionally ■ Search suggestions and recent search functionality ■ Player showing lecture part results consecutively Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive Chart 22 Result and Future Work

23. Questions … Remarks? Martin Malchow Martin.Malchow@hpi.de Hasso Plattner Institute, Potsdam, Germany

27. Explanations - Text layers First text layer for running text. ■ Second level for bullet points □ Third level for bullet points – Fourth level for bullet points 1.Fifth level for numberings a)Sixth level for listings SEVENTH TEXT LAYER FOR CORE MESSAGES In this template, we pre-formatted different text layers (as you can see on the right side). You don’t have to generate bullet points manually. By the way: Please avoid this! To change from one text layer to the next, use the Increase / Decrease List Level buttons: Chart 27 Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive

28. Explanations - Footer You can insert or change your presentation‘s footer. Click on the Insert-tab | Header and Footer | After filling in your descriptions click on Apply to All. Descriptions: ■ Activate date and time and write in:Speaker, Job Description ■ Activate the slide number. ■ Activate the footer and write in: Presentation Title Don‘t use the template without the complete footer. Chart 28 Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive

29. Explanations - Drawing guides You can enable your guide-lines to align objects on the slide (View | Show | Select the option „Guides“) Or hit the right mouse button outside the slide and go at „Grid and Guides…“ Chart 29 Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive

30. Explanations - Slide layouts You can choose between different slide layouts. These pre-defined layouts gives you the oportunity to use text and visualisations just the right way. To use these layouts: Click on the Home-tab | New Slide or Layout | and choose one out of the layouts Click „Reset“ to reset to the predefined slide layout. Chart 30 Martin Malchow Lecture Butler - Teaching Reasonable Lectures from a Lecture Video Archive