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  • × year_i:[2000 TO 2010}
  • × author_ss:"Efron, M."
  • × theme_ss:"Retrievalalgorithmen"
  1. Efron, M.: Query expansion and dimensionality reduction : Notions of optimality in Rocchio relevance feedback and latent semantic indexing (2008) 1.00 
    1.0 = *:*, product of:
  1.0 = boost
  1.0 = queryNorm