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Document expansion for text-based image retrieval at WikipediaMM 2010

Min, Jinming and Leveling, Johannes and Jones, Gareth J.F. (2010) Document expansion for text-based image retrieval at WikipediaMM 2010. In: CLEF labs 2010, Cross Language Image Retrieval (ImageCLEF), 22-23 September 2010, Padua, Italy.

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We describe and analyze our participation in the Wikipedi- aMM task at ImageCLEF 2010. Our approach is based on text-based image retrieval using information retrieval techniques on the metadata documents of the images. We submitted two English monolingual runs and one multilingual run. The monolingual runs used the query to retrieve the metadata document with the query and document in the same language; the multilingual run used queries in one language to search the metadata provided in three languages. The main focus of our work was using the English query to retrieve images based on the English meta-data. For these experiments the English metadata data was expanded using an external resource - DBpedia. This study expanded on our application of document expansion in our previous participation in Image-CLEF 2009. In 2010 we combined document expansion with a document reduction technique which aimed to include only topically important words to the metadata. Our experiments used the Okapi feedback algorithm for document expansion and Okapi BM25 model for retrieval. Experimental results show that combining document expansion with the document reduction method give the best overall retrieval results.

Item Type:Conference or Workshop Item (Paper)
Event Type:Conference
Subjects:Computer Science > Information retrieval
DCU Faculties and Centres:Research Initiatives and Centres > Centre for Next Generation Localisation (CNGL)
DCU Faculties and Schools > Faculty of Engineering and Computing > School of Computing
Official URL:
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Science Foundation Ireland
ID Code:15841
Deposited On:25 Nov 2010 12:02 by Shane Harper. Last Modified 25 Nov 2010 12:02

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