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Abstract: The effects of query structures and query expansion (QE) on retrieval performance were tested with a best match retrieval system (INQUERY ). Query structure means the use of operators to express the relations between search keys. Eight different structures were tested, representing weak structures (averages and weighted averages of the weights of the keys) and strong structures (e.g., queries with more elaborated search key relations). QE was based on concepts, which were first selected from ... (Update)
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.... and 2 is the length measure of document , computed in the same way it would have been if document language terms were being indexed [3]. The effect of these equations is to treat every translation as equally likely and separately estimate the term frequency, document...
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BibTeX entry: (Update)
Jaana Kekalainen and Kalervo Jarvelin. The impact of query structure and query expansion on retrieval performance. In Proceedings of the 21st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, pages 130--137, August 1998. http://citeseer.ist.psu.edu/kekalainen98impact.html More
@misc{ kekalainen98impact,
author = "J. Kekalainen and K. Jarvelin",
title = "The impact of query structure and query expansion on retrieval performance",
text = "Jaana Kekalainen and Kalervo Jarvelin. The impact of query structure and
query expansion on retrieval performance. In Proceedings of the 21st Annual
International ACM SIGIR Conference on Research and Development in Information
Retrieval, pages 130--137, August 1998.",
year = "1998",
url = "citeseer.ist.psu.edu/kekalainen98impact.html" }
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