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Hybrid Search: Effectively Combining Keywords and Semantic Searches

Bhagdev, R., Chapman, S., Ciravegna, F., Lanfranchi, V. and Petrelli, D. (2008) Hybrid Search: Effectively Combining Keywords and Semantic Searches. In: European Semantic Web Conference 2008. 5th European Semantic Web Conference, 1-5 June 2008, Tenerife (Spain). .


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This paper describes hybrid search, a search method supporting both document and knowledge retrieval via the flexible combination of ontologybased search and keyword-based matching. Hybrid search smoothly copes with lack of semantic coverage of document content, which is one of the main limitations of current semantic search methods. In this paper we define hybrid search formally, discuss its compatibility with the current semantic trends and present a reference implementation: K-Search. We then show how the method outperforms both keyword-based search and pure semantic search in terms of precision and recall in a set of experiments performed on a collection of about 18.000 technical documents. Experiments carried out with professional users show that users understand the paradigm and consider it very powerful and reliable. K-Search has been ported to two applications released at Rolls-Royce plc for searching technical documentation about jet engines.

Item Type: Proceedings Paper
Keywords: Semantic Search, Semantic Web in use.
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Computer Science (Sheffield)
The University of Sheffield > Faculty of Social Sciences (Sheffield) > Information School (Sheffield)
Depositing User: dr. Daniela Petrelli
Date Deposited: 12 May 2008 09:09
Last Modified: 08 Feb 2013 16:56
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/3771

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