Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Why did you record this video?

997 views

Published on

An Exploratory Study on User Intentions for Video Production.

Published in: Technology, Business
  • Be the first to comment

Why did you record this video?

  1. 1. Why did you record this video?An exploratory study on user intentions for videoproduction.Mathias Lux* & Jochen Huber§* Klagenfurt University, AT§ Technische Universität Darmstadt, DE This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0
  2. 2. Motivation• Novelty of intentions in MMIS – have not (yet) been investigated thoroughly• Hard, interdisciplinary problem – fuzzy, social, deals with people• Intentions are diverse – have potential for distinguishing between different user groups (cc) by bitzcelt, http://www.flickr.com/photos/bitzcelt/
  3. 3. Goals• Find out if there is a taxonomy that can be used for MMIS.• Support or reject current approaches.• Find path towards a usable model supported by statistics. (cc) by jam343 http://www.flickr.com/photos/jam343
  4. 4. Roots• A taxonomy of web search (2002), A. Broder – navigational – “dublin wikipedia” – informational – “day tour dublin” – transactional – “book hotel in dublin”• Understanding user goals in web search (2004), D. Levinson & D. Rose – transactional -> resource – more fine-grained sub categories – informational > 60%
  5. 5. Roots• A classification scheme for user intentions in image search (2010), M. Lux, C. Kofler, O. Marques – 4th category: mental image – categories overlap
  6. 6. Photo production• The ubiquitous camera: An in-depth study of camera phone use (2005), T. Kindberg et al. – Affection vs. function – Social vs. individual
  7. 7. Video production• Video microblogging: your 12 seconds of fame (2010) N. Bornoe & L. Barkhuus – social collaboration (not individual) – self expression, entertainment, self representation• Practices in creating videos with mobile phones (2009), A. Puikkonen et al. – preserve moment of interest – sharing ”occasionally”, not by default
  8. 8. Methodology• Exploratory study – 20 participants (16m, 4f) – semi-structured interviews• Interviews – demographics & general usage – communication & recording habits• Instances – 48 situations were reported
  9. 9. Research QuestionsUsing Kindberg’s taxonomy as a basis• Are Kindberg’s classes disjoint? – are there instances that indicate overlap?• Is a 2D space sufficient to describe video production intentions – need for other dimensions? (cc) by oberazzi, http://www.flickr.com/photos/oberazzi/
  10. 10. Analysis• Clustering of instances – similar instances go together – grouped manually – discussed grouping – multiple assignments possible (cc) by alastanton, http://www.flickr.com/photos/alanstanton
  11. 11. Clustering• Preservation – Storing a scene to view it later• Sharing – Showing scenes to others• Affection – Capturing a scene due to emotion• Functional – Video is part of a job, hobby, etc.• Technical interest – E.g. trying out a camera• Other – Unknown or unmentioned intentions, etc.
  12. 12. Results• Nearly all of the videos (39 /48) were taken for sharing them. – 29 of the 39 instances: family, friends, colleagues, other closed groups.• Affection - 23 instances• Preservation - 19 instances
  13. 13. Results• Do class assignments co-occur?• Cross-tabulation – phi can be read like a correlation coefficient – -1 <= min <= phi <= max <= 1 – min, max due to different number of assignments
  14. 14. Discussion• Multiple assignments – 81% were assigned to more than 1 cluster – Are classes disjoint (e.g. function vs. affection)?P4 mentioned a video he took on a mountain while snowboarding. He recorded the video because he “took it because [he loves] snowboard video tricks and [he thinks] that it is very important to reconsider them to improve [his own] technique”.
  15. 15. DiscussionP10 reported “First my friend is so good at singing and also charming and second he was about to leave the city and that was our last meeting. So I took the video to remember the night”• Ad-hoc affection vs.• Preservation
  16. 16. Discussion• Preservation opposite of sharing? – No correlation in our data (A)• Function & preservation go together? – maximum neg. correlation (B) B A
  17. 17. Conclusion• Intention classes not disjoint in the domain of video production• Kindberg’s taxonomy is not sufficient for video production• Preservation, sharing, affection & function are 4 valid classes to start with.
  18. 18. Future work• Our proposed structure is biased by – the small data set – the convenience sample – the questions asked• Collected a data set for photos – 1,309 photos + intentions of their photographers – mturk validation and QA of the survey results• Collection of a video data set• Application in domains (cc) by thevince, http://www.flickr.com/photos/thevince
  19. 19. Thanks ….. for your interestmore on user intentions: http://tinyurl.com/mlux-iteccheck out LIRe CBIR library: http://www.semanticmetadata.net mlux@itec.uni-klu.ac.at (cc) http://www.jumpingbrain.org/

×