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DCU and UTA at ImageCLEFPhoto 2007

Jarvelin, Anni and Wilkins, Peter and Adamek, Tomasz and Airio, Eija and Jones, Gareth J.F. (2007) DCU and UTA at ImageCLEFPhoto 2007. In: CLEF 2007: Workshop on Cross-Language Information Retrieval and Evaluation, 19-21 Sept. 2007, Budapest, Hungary.

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Abstract

Dublin City University (DCU) and University of Tampere(UTA) participated in the ImageCLEF 2007 photographic ad-hoc retrieval task with several monolingual and bilingual runs. Our approach was language independent: text retrieval based on fuzzy s-gram query translation was combined with visual retrieval. Data fusion between text and image content was performed using unsupervised query-time weight generation approaches. Our baseline was a combination of dictionary-based query translation and visual retrieval, which achieved the best result. The best mixed modality runs using fuzzy s-gram translation achieved on average around 83% of the performance of the baseline. Performance was more similar when only top rank precision levels of P10 and P20 were considered. This suggests that fuzzy sgram query translation combined with visual retrieval is a cheap alternative for cross-lingual image retrieval where only a small number of relevant items are required. Both sets of results emphasize the merit of our query-time weight generation schemes for data fusion, with the fused runs exhibiting marked performance increases over single modalities, this is achieved without the use of any prior training data.

Item Type:Conference or Workshop Item (Paper)
Event Type:Workshop
Refereed:Yes
Uncontrolled Keywords:Fuzzy matching; Content-Based Image Retrieval; Data Fusion
Subjects:Computer Science > Information retrieval
DCU Faculties and Centres:UNSPECIFIED
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:16193
Deposited On:17 Jun 2011 11:21 by Shane Harper. Last Modified 24 Aug 2011 09:58

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