The LIMSI Broadcast News transcription system
Speech Communication - Special issue on automatic transcription of broadcast news data
Successful approaches in the TREC video retrieval evaluations
Proceedings of the 12th annual ACM international conference on Multimedia
Finding the right shots: assessing usability and performance of a digital video library interface
Proceedings of the 12th annual ACM international conference on Multimedia
Addressing the challenge of visual information access from digital image and video libraries
Proceedings of the 5th ACM/IEEE-CS joint conference on Digital libraries
Merging storyboard strategies and automatic retrieval for improving interactive video search
Proceedings of the 6th ACM international conference on Image and video retrieval
Establishing the utility of non-text search for news video retrieval with real world users
Proceedings of the 15th international conference on Multimedia
Search strategies in multimodal image retrieval
Proceedings of the second international symposium on Information interaction in context
User variance and its impact on video retrieval benchmarking
Proceedings of the ACM International Conference on Image and Video Retrieval
Mining novice user activity with TRECVID interactive retrieval tasks
CIVR'06 Proceedings of the 5th international conference on Image and Video Retrieval
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Improving users' interactions with a video retrieval system requires the examination of the search behavior of real users. This paper presents a study that examines and compares the video search behavior of professional archivists and novice users. The comparison focuses on the use and effectiveness of different state-of-the-art video search methods offered by the VITALAS retrieval system, and also on the behavior of the two user groups during their interactions with the retrieval results. We conducted our experiments in the context of TRECVID's 2009 interactive search task, using the provided collection and topics for our evaluation. The findings are based on a qualitative questionnaire analysis and a quantitative examination of the logged user actions on the search interface. The experimental results indicate that today's visual search techniques have improved in effectiveness, confirming a trend found in previous user studies. To our surprise, professional archivists used visual concept search in many of their searches. Queries containing visual concepts were more effective, resulting in more relevant shots found than the alternative methods. Overall, we conclude that professional archivists are more focused on recall when carrying out their search tasks and are better at reflecting on their own search performance.