Vallet, D., Hopfgartner, F. , Jose, J.M. and Castells, P. (2011) Effects of usage-based feedback on video retrieval: a simulation-based study. ACM Transactions on Information Systems, 29(2), Art. 11. (doi: 10.1145/1961209.1961214)
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Abstract
We present a model for exploiting community-based usage information for video retrieval, where implicit usage information from past users is exploited in order to provide enhanced assistance in video retrieval tasks, and alleviate the effects of the semantic gap problem. We propose a graph-based model for all types of implicit and explicit feedback, in which the relevant usage information is represented. Our model is designed to capture the complex interactions of a user with an interactive video retrieval system, including the representation of sequences of user-system interaction during a search session. Building upon this model, four recommendation strategies are defined and evaluated. An evaluation strategy is proposed based on simulated user actions, which enables the evaluation of our recommendation strategies over a usage information pool obtained from 24 users performing four different TRECVid tasks. Furthermore, the proposed simulation approach is used to simulate usage information pools with different characteristics, with which the recommendation approaches are further evaluated on a larger set of tasks, and their performance is studied with respect to the scalability and quality of the available implicit information.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Jose, Professor Joemon and Hopfgartner, Dr Frank |
Authors: | Vallet, D., Hopfgartner, F., Jose, J.M., and Castells, P. |
Subjects: | Q Science > QA Mathematics > QA75 Electronic computers. Computer science |
College/School: | College of Science and Engineering > School of Computing Science College of Arts & Humanities > School of Humanities > Information Studies |
Journal Name: | ACM Transactions on Information Systems |
ISSN: | 1046-8188 |
ISSN (Online): | 1558-2868 |
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