Relevance weighting of search terms

Wiley - Tập 27 Số 3 - Trang 129-146 - 1976
Stephen Robertson1, Karen Spärck Jones2
1School of Library, Archive and Information Studies, University College London, London WC1E 6BT, England
2Computer Laboratory, University of Cambridge, Cambridge CB2 3QG, England

Tóm tắt

AbstractThis paper examines statistical techniques for exploiting relevance information to weight search terms. These techniques are presented as a natural extension of weighting methods using information about the distribution of index terms in documents in general. A series of relevance weighting functions is derived and is justified by theoretical considerations. In particular, it is shown that specific weighted search methods are implied by a general probabilistic theory of retrieval. Different applications of relevance weighting are illustrated by experimental results for test collections.

Từ khóa


Tài liệu tham khảo

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Thông tin xuất bản

Wiley

Tập 27 Số 3

129-146

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