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Robertson, S.E.; Sparck Jones, K.: Relevance weighting of search terms (1976) 0.00
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Abstract

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

Source

Journal of the American Society for Information Science. 27(1976), S.129-146

Robertson, S.E.: Theories and models in information retrieval (1977) 0.00

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Abstract: This paper is concerned with recent work in the theory of information retrieval. More particularly, it is concerned with theories which tackle the problem of retrieval performance, in a sense which will be explained. The aim is not an exhaustive survey of such work; rather it is an analysis and synthesis of those contributions which I feel to be important or find interesting
Source: Journal of documentation. 33(1977), S.126-148

Robertson, S.E.; Belkin, N.J.: Ranking in principle (1978) 0.00

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Source: Journal of documentation. 34(1978), S.93-100

Robertson, S.E.: ¬The probabilistic character of relevance (1977) 0.00

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Robertson, S.E.: ¬The probability ranking principle in IR (1977) 0.00

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Source: Journal of documentation. 33(1977), S.294-304

Robertson, S.E.; Walker, S.: Some simple effective approximations to the 2-Poisson molde for probabilisitc weighted retrieval (1979) 0.00

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Source: Journal of documentation. 35(1979), S.285-295 (???)

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