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Slide set used by Mike Christel in presenting paper at ACM/IEEE Joint Conference on Digital Libraries, Ottawa, Canada, June 15, 2011

Slide set used by Mike Christel in presenting paper at ACM/IEEE Joint Conference on Digital Libraries, Ottawa, Canada, June 15, 2011

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  • 1. Physics Pathway: A Digital Library Filled with Synthetic Interviews Mike Christel, Scott Stevens, and Dean Zollman christel@cs.cmu.edu Entertainment Technology Center Carnegie Mellon University Presented at JCDL 2011, Ottawa, Canada June 15, 2011
  • 2. Talk Outline• What are Synthetic Interviews?• What is Physics Pathway?• Field use of Physics Pathway• Conclusions
  • 3. Synthetic Interviews Interface and indexing technology that allows an individual to have a fluent conversation with a figure as if that person were present in real time
  • 4. Synthetic Interviews (SIs) for Physics Teaching • Initially, one “Master Teacher” used, but recipients wanted broader representation of opinions • Four in corpus: Roberta Lang, Chuck Lang, Paul Hewitt, Leroy Salary
  • 5. Physics Pathway: Motivation Teachers relatively new to physics teaching find 1-on-1 interactions with a mentor extremely valuable, but mentors have limited time. SIs provide virtual mentoring.
  • 6. Physics Pathway: SI and Video Library• Left panel: Synthetic • Right panel: Digital video Interview interface library interface (see (focus of this work) www.idvl.org for more details)
  • 7. Synthetic Interview Interface• 450,365 question variants mapping to 6,598 physics subject or physics pedagogy topics, covered by one to four master teachers in 7,600 video answers• SI interface components – a quick walkthrough…. (try it yourself later at http://physicspathway.org)
  • 8. SI: Query InterfaceInterface into library ofsynthetic interviewsemphasizes “Precision at 1”– Top-rated answer to queryis immediately played tokeep up a fluent dialog
  • 9. SI: Related Question
  • 10. SI: Change Teacher
  • 11. SI: Shortcuts Two menus provide “quick starter” shortcuts identified by KSU physics pedagogical experts and American Association of Physics Teacher (AAPT) workshops to topic areas covered by the digital library
  • 12. SI: Query History
  • 13. SI: Feedback
  • 14. Synthetic Interview Interface• 450,365 question variants mapping to 6,598 physics subject or physics pedagogy topics, covered by one to four master teachers in 7,600 video answers• SI: video playback, related links, choose a master teacher, provide feedback, show what is answered, query area (link to ComPADRE), related questions, past query history, quick questions choices
  • 15. Fall 2010 Trial with Physics Teachers• 19 high school physics teachers, 14-week trial period• Feedback given on individual responses• Survey computed once a week• 588 visits to web site• Excellent coverage of SI data set to teachers’ queries: only two queries received a default “I don’t have an answer to that” video response (both typos)
  • 16. Lessons Learned - 1 Source of played videos during sessions: Quick question shortcuts used less than expected
  • 17. Lessons Learned - 2• Response coverage overwhelmingly seen as appropriate• Relevance good: 67% good or ideal, another 29% appropriate but not personally useful
  • 18. Lessons Learned - 3 Synthetic interviews validated or reinforced physics teachers’ ideas on their course materials and delivery Question % of Teacher-Weeks Built lesson from ideas in Physics Pathway 4.9% Completely changed lesson plan 2.9% Small changes to lesson plan 12.7% No changes, Physics Pathway reinforced plan 34.3% Did not use ideas from Physics Pathway 38.2%
  • 19. Access via The Physics Front (NSDL)Physics Pathway is aPartner site accessiblefrom The PhysicsFront.org: “A free serviceprovided by the AmericanAssociation of PhysicsTeachers in partnershipwith the NSF/NSDL” –www.thephysicsfront.org(part of ComPADREDigital Library in NSDL) Example search: momentum looking at “Partner Results” http://www.thephysicsfront.org/search/fedsearch.cfm?area =federate&FedQuery=momentum&AllSearch=1
  • 20. Take-Home Message from Paper• Synthetic interviews engage physics teachers in a virtual dialog for continuing education that has been well received in AAPT workshops and KSU-directed field tests• The site is available for use at both http://physicspathway.org and via thephysicsfront.org
  • 21. CreditsMany members of Carnegie Mellon University (CMU) and KansasState University (KSU) contributed to this work, including:KSU Physics Education Research Group: Dean Zollman, BrianAdrian, Chris Nakamura, Sytil MurphyCMU Entertainment Technology Center: Scott Stevens, BryanMaher, Andy Korzik, Xiaoxi Liu, Srinavin NairComPADRE/NSDL Integration: Lyle Barbato, Bruce Mason For more information: http://www.physicspathway.org/PathwayHome.html Library of physics teaching resources accessible via thephysicsfront.org or directly at physicspathway.org This work supported by the National Science Foundation Teacher Professional Continuum Program under Grants 0455772 & 0455813. A preliminary version was supported by NSFs NSDL Program under grants 0226219 & 0226157.