Christoph Kofler

Christoph Kofler's picture

Christoph Kofler

T
+31 15 27 87241
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C.Kofler@tudelft.nl
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Faculty of Electrical Engineering, Mathematics and Computer Science
Intelligent Systems
Mekelweg 4
2628 CD Delft
The Netherlands

Office: HB11.080

Ph.D. Research and Research Interests

I am a fourth-year Ph.D. Researcher in the Multimedia Computing (MMC) Group at Delft University of Technology, The Netherlands. I am working together with Prof. Alan Hanjalic and Dr. Martha Larson. I am collaborating with Prof. Shih-Fu Chang and other colleagues from the Digital Video and Multimedia Lab (DVMM) at Columbia University, New York, NY, USA.

In 2013, I received the highly prestigious Google European Doctoral Fellowship and am the first named Google Fellow in Video Search worldwide. I feel very honored to be one of 39 worldwide selected Ph.D. Researchers who Google considers as "some of the most promising young academics in the world" and am very grateful to Google for having provided me this great opportunity and freedom to address research questions I am interested in. Please find Google's official announcement here and a list of worldwide Fellowship recipients here.

My research interests include the field of multimedia information retrieval with focus on video search intent inference and its applications for search results optimization throughout the entire search engine pipeline (indexing, retrieval functions, query formulation). Next to ‘what’ a user is looking for using video search, I am particularly interested in the ‘why’ component behind the search and its opportunities for the development of novel multimedia retrieval algorithms. Besides search intent inference, I am interested in search goal and query failure analysis. This research includes strong connections to information retrieval, multimedia content analysis, data and web mining, machine learning, human computer interaction, and crowdsourcing.

Key Publications

C. Kofler, S. Bhattacharya, M. Larson, T. Chen, A. Hanjalic, and S.-F. Chang. Uploader Intent for Online Video: Typology, Inference and Applications. IEEE Transactions on Multimedia, under review.

C. Kofler, L. Yang, M. Larson, T. Mei, A. Hanjalic, and S. Li. Predicting Failing Queries in Video Search. IEEE Transactions on Multimedia, vol.16, no.7, pp.1973,1985, Nov. 2014.

C. Kofler, M. Larson, A. Hanjalic. Intent-Aware Video Search Result Optimization. IEEE Transactions on Multimedia, vol.16, no.5, pp.1421-1433, Aug. 2014.

C. Kofler, L. Yang, M. Larson, T. Mei, A. Hanjalic, and S. Li. When Video Search Goes Wrong: Predicting Query Failure Using Search Engine Logs and Visual Search Results. In ACM Multimedia 2012: Proceedings of the 20th ACM International Conference on Multimedia. Nara, Japan. October, 2012.

A. Hanjalic, C. Kofler, M. Larson (alphabetical order). Intent and its Discontents: The User at the Wheel of the Online Video Search Engine. In ACM Multimedia 2012: Proceedings of the 20th ACM International Conference on Multimedia. Nara, Japan. October, 2012.

C. Kofler, M. Larson, and A. Hanjalic. To Seek, Perchance to Fail: Expressions of User Needs in Internet Video Search. In 33rd European Conference on Information Retrieval, ECIR 2011. Dublin, Ireland. April, 2011.

M. Lux, C. Kofler, and O. Marques. A Classification Scheme for User Intentions in Image Search. In ACM CHI '10: Proceedings of the 28th International Conference on Human Factors in Computing Systems, CHI 2010. Atlanta, GA, USA. April, 2010.

C. Kofler and M. Lux. Dynamic Presentation Adaptation based on User Intent Classification. In ACM Multimedia '09: Proceedings of the 17th ACM International Conference on Multimedia. Beijing, P. R. China. October, 2009.

Please see tab "Publications" for entire list.

News

  • August 2014: Full Paper "Predicting Failing Queries in Video Search" accepted for publication in IEEE Transactions on Multimedia.
  • March 2014: Full Paper "Intent-Aware Video Search Result Optimization" accepted for publication in IEEE Transactions on Multimedia.
  • January 2014: Accepted an internship offer from Google Inc. for Summer 2014.
  • June 2013: I received the highly prestigious Google European Doctoral Fellowship and am the first named Google fellow in Video Search worldwide.
  • November 2012: Recipient of ACM Multimedia Student Conference Participation Grant.
  • November 2012: Two papers accepted at ACM Multimedia 2012 (1x Brave New Ideas, 1x Full).
  • December 2011: Finished internship at Microsoft Research.
  • April 2011: Best paper nomination at 33rd European Conference on Information Retrieval.