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author_ss:"Sparck Jones, K."
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theme_ss:"Retrievalalgorithmen"
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type_ss:"a"
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year_i:[1970 TO 1980}
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Sparck Jones, K.: ¬A statistical interpretation of term specifity and its application in retrieval (1972)
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Sparck Jones, K.: Search term relevance weighting given little relevance information (1979)
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