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  • × theme_ss:"OPAC"
  • × theme_ss:"Retrievalstudien"
  1. Pedersen, J.O.; Silverstein, C.; Vogt, C.C.: Verity at TREC-6 : out-of-the-box and beyond (2000) 0.02 
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  2. Wien, C.: Sample sizes and composition : their effect on recall and precision in IR experiments with OPACs (2000) 0.01 
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