A novel combined term suggestion service for domain-specific digital libraries

Authors:
Daniel Hienert;Philipp Schaer;Johann Schaible;Philipp Mayr
Affiliations:
GESIS, Leibniz Institute for the Social Sciences, Bonn, Germany;GESIS, Leibniz Institute for the Social Sciences, Bonn, Germany;GESIS, Leibniz Institute for the Social Sciences, Bonn, Germany;GESIS, Leibniz Institute for the Social Sciences, Bonn, Germany
Venue:
TPDL'11 Proceedings of the 15th international conference on Theory and practice of digital libraries: research and advanced technology for digital libraries
Year:
2011

Citing 12
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Abstract

Interactive query expansion can assist users during their query formulation process. We conducted a user study with over 4,000 unique visitors and four different design approaches for a search term suggestion service. As a basis for our evaluation we have implemented services which use three different vocabularies: (1) user search terms, (2) terms from a terminology service and (3) thesaurus terms. Additionally, we have created a new combined service which utilizes thesaurus term and terms from a domain-specific search term recommender. Our results show that the thesaurus-based method clearly is used more often compared to the other single-method implementations. We interpret this as a strong indicator that term suggestion mechanisms should be domainspecific to be close to the user terminology. Our novel combined approach which interconnects a thesaurus service with additional statistical relations outperformed all other implementations. All our observations show that domainspecific vocabulary can support the user in finding alternative concepts and formulating queries.