Document (#3859)

Author
Robertson, S.E.
Thompson, C.L.
Title
¬An operational evaluation of weighting, ranking and relevance feedback via a front-end system
Imprint
London : British Library
Year
1987
Series
BLRDD report; no.5949
Theme
Retrievalstudien

Similar documents (author)

  1. Thompson, D.M.: Online public access catalogs and user instruction (1994) 2.03
    2.0323164 = sum of:
      2.0323164 = product of:
        4.064633 = sum of:
          4.064633 = weight(author_txt:thompson in 1116) [ClassicSimilarity], result of:
            4.064633 = score(doc=1116,freq=1.0), product of:
              0.78893095 = queryWeight, product of:
                1.1330914 = boost
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.08446402 = queryNorm
              5.1520767 = fieldWeight in 1116, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.625 = fieldNorm(doc=1116)
        0.5 = coord(1/2)
    
  2. Thompson, L.S.: Ebert, Friedrich Adolf (1983) 2.03
    2.0323164 = sum of:
      2.0323164 = product of:
        4.064633 = sum of:
          4.064633 = weight(author_txt:thompson in 301) [ClassicSimilarity], result of:
            4.064633 = score(doc=301,freq=1.0), product of:
              0.78893095 = queryWeight, product of:
                1.1330914 = boost
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.08446402 = queryNorm
              5.1520767 = fieldWeight in 301, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.625 = fieldNorm(doc=301)
        0.5 = coord(1/2)
    
  3. Thompson, N.J.: Intellectual property materials online/CD-ROM : what and where (1992) 2.03
    2.0323164 = sum of:
      2.0323164 = product of:
        4.064633 = sum of:
          4.064633 = weight(author_txt:thompson in 992) [ClassicSimilarity], result of:
            4.064633 = score(doc=992,freq=1.0), product of:
              0.78893095 = queryWeight, product of:
                1.1330914 = boost
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.08446402 = queryNorm
              5.1520767 = fieldWeight in 992, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.625 = fieldNorm(doc=992)
        0.5 = coord(1/2)
    
  4. Thompson, G.B.: Information literacy accreditation mandates : what they mean for faculty and librarians (2002) 2.03
    2.0323164 = sum of:
      2.0323164 = product of:
        4.064633 = sum of:
          4.064633 = weight(author_txt:thompson in 2042) [ClassicSimilarity], result of:
            4.064633 = score(doc=2042,freq=1.0), product of:
              0.78893095 = queryWeight, product of:
                1.1330914 = boost
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.08446402 = queryNorm
              5.1520767 = fieldWeight in 2042, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.625 = fieldNorm(doc=2042)
        0.5 = coord(1/2)
    
  5. Thompson, R.F.: ¬Das Gehirn : von der Nervenzelle zur Verhaltenssteuerung (1994) 2.03
    2.0323164 = sum of:
      2.0323164 = product of:
        4.064633 = sum of:
          4.064633 = weight(author_txt:thompson in 3713) [ClassicSimilarity], result of:
            4.064633 = score(doc=3713,freq=1.0), product of:
              0.78893095 = queryWeight, product of:
                1.1330914 = boost
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.08446402 = queryNorm
              5.1520767 = fieldWeight in 3713, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.243322 = idf(docFreq=29, maxDocs=41962)
                0.625 = fieldNorm(doc=3713)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Smith, M.P.; Pollitt, A.S.: Ranking and relevance feedback extensions to a view-based searching system (1995) 0.70
    0.69915605 = sum of:
      0.69915605 = product of:
        0.93220806 = sum of:
          0.029406011 = weight(abstract_txt:system in 3924) [ClassicSimilarity], result of:
            0.029406011 = score(doc=3924,freq=1.0), product of:
              0.11192134 = queryWeight, product of:
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.033279724 = queryNorm
              0.2627382 = fieldWeight in 3924, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.078125 = fieldNorm(doc=3924)
          0.070417106 = weight(abstract_txt:evaluation in 3924) [ClassicSimilarity], result of:
            0.070417106 = score(doc=3924,freq=1.0), product of:
              0.20032768 = queryWeight, product of:
                1.3378704 = boost
                4.4993234 = idf(docFreq=1267, maxDocs=41962)
                0.033279724 = queryNorm
              0.35150963 = fieldWeight in 3924, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4993234 = idf(docFreq=1267, maxDocs=41962)
                0.078125 = fieldNorm(doc=3924)
          0.13280308 = weight(abstract_txt:relevance in 3924) [ClassicSimilarity], result of:
            0.13280308 = score(doc=3924,freq=2.0), product of:
              0.24270812 = queryWeight, product of:
                1.4726031 = boost
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.033279724 = queryNorm
              0.547172 = fieldWeight in 3924, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.078125 = fieldNorm(doc=3924)
          0.19318484 = weight(abstract_txt:ranking in 3924) [ClassicSimilarity], result of:
            0.19318484 = score(doc=3924,freq=2.0), product of:
              0.31159768 = queryWeight, product of:
                1.6685555 = boost
                5.6114335 = idf(docFreq=416, maxDocs=41962)
                0.033279724 = queryNorm
              0.61998165 = fieldWeight in 3924, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.6114335 = idf(docFreq=416, maxDocs=41962)
                0.078125 = fieldNorm(doc=3924)
          0.23078796 = weight(abstract_txt:feedback in 3924) [ClassicSimilarity], result of:
            0.23078796 = score(doc=3924,freq=2.0), product of:
              0.35082263 = queryWeight, product of:
                1.770465 = boost
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.033279724 = queryNorm
              0.657848 = fieldWeight in 3924, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.078125 = fieldNorm(doc=3924)
          0.27560905 = weight(abstract_txt:front in 3924) [ClassicSimilarity], result of:
            0.27560905 = score(doc=3924,freq=1.0), product of:
              0.49752828 = queryWeight, product of:
                2.1083972 = boost
                7.090643 = idf(docFreq=94, maxDocs=41962)
                0.033279724 = queryNorm
              0.5539565 = fieldWeight in 3924, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.090643 = idf(docFreq=94, maxDocs=41962)
                0.078125 = fieldNorm(doc=3924)
        0.75 = coord(6/8)
    
  2. Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 0.55
    0.55493873 = sum of:
      0.55493873 = product of:
        0.7399183 = sum of:
          0.023524808 = weight(abstract_txt:system in 193) [ClassicSimilarity], result of:
            0.023524808 = score(doc=193,freq=1.0), product of:
              0.11192134 = queryWeight, product of:
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.033279724 = queryNorm
              0.21019055 = fieldWeight in 193, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.0625 = fieldNorm(doc=193)
          0.112667374 = weight(abstract_txt:evaluation in 193) [ClassicSimilarity], result of:
            0.112667374 = score(doc=193,freq=4.0), product of:
              0.20032768 = queryWeight, product of:
                1.3378704 = boost
                4.4993234 = idf(docFreq=1267, maxDocs=41962)
                0.033279724 = queryNorm
              0.5624154 = fieldWeight in 193, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.4993234 = idf(docFreq=1267, maxDocs=41962)
                0.0625 = fieldNorm(doc=193)
          0.07512478 = weight(abstract_txt:relevance in 193) [ClassicSimilarity], result of:
            0.07512478 = score(doc=193,freq=1.0), product of:
              0.24270812 = queryWeight, product of:
                1.4726031 = boost
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.033279724 = queryNorm
              0.30952725 = fieldWeight in 193, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.0625 = fieldNorm(doc=193)
          0.2185637 = weight(abstract_txt:ranking in 193) [ClassicSimilarity], result of:
            0.2185637 = score(doc=193,freq=4.0), product of:
              0.31159768 = queryWeight, product of:
                1.6685555 = boost
                5.6114335 = idf(docFreq=416, maxDocs=41962)
                0.033279724 = queryNorm
              0.7014292 = fieldWeight in 193, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.6114335 = idf(docFreq=416, maxDocs=41962)
                0.0625 = fieldNorm(doc=193)
          0.13055338 = weight(abstract_txt:feedback in 193) [ClassicSimilarity], result of:
            0.13055338 = score(doc=193,freq=1.0), product of:
              0.35082263 = queryWeight, product of:
                1.770465 = boost
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.033279724 = queryNorm
              0.372135 = fieldWeight in 193, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.0625 = fieldNorm(doc=193)
          0.17948426 = weight(abstract_txt:operational in 193) [ClassicSimilarity], result of:
            0.17948426 = score(doc=193,freq=1.0), product of:
              0.43375692 = queryWeight, product of:
                1.9686421 = boost
                6.6206393 = idf(docFreq=151, maxDocs=41962)
                0.033279724 = queryNorm
              0.41378996 = fieldWeight in 193, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6206393 = idf(docFreq=151, maxDocs=41962)
                0.0625 = fieldNorm(doc=193)
        0.75 = coord(6/8)
    
  3. Robertson, S.E.: OKAPI at TREC-3 (1995) 0.51
    0.5146017 = sum of:
      0.5146017 = product of:
        0.8233627 = sum of:
          0.035287213 = weight(abstract_txt:system in 190) [ClassicSimilarity], result of:
            0.035287213 = score(doc=190,freq=1.0), product of:
              0.11192134 = queryWeight, product of:
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.033279724 = queryNorm
              0.31528583 = fieldWeight in 190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.09375 = fieldNorm(doc=190)
          0.11268716 = weight(abstract_txt:relevance in 190) [ClassicSimilarity], result of:
            0.11268716 = score(doc=190,freq=1.0), product of:
              0.24270812 = queryWeight, product of:
                1.4726031 = boost
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.033279724 = queryNorm
              0.46429086 = fieldWeight in 190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.09375 = fieldNorm(doc=190)
          0.16392279 = weight(abstract_txt:ranking in 190) [ClassicSimilarity], result of:
            0.16392279 = score(doc=190,freq=1.0), product of:
              0.31159768 = queryWeight, product of:
                1.6685555 = boost
                5.6114335 = idf(docFreq=416, maxDocs=41962)
                0.033279724 = queryNorm
              0.5260719 = fieldWeight in 190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6114335 = idf(docFreq=416, maxDocs=41962)
                0.09375 = fieldNorm(doc=190)
          0.19583008 = weight(abstract_txt:feedback in 190) [ClassicSimilarity], result of:
            0.19583008 = score(doc=190,freq=1.0), product of:
              0.35082263 = queryWeight, product of:
                1.770465 = boost
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.033279724 = queryNorm
              0.5582025 = fieldWeight in 190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.09375 = fieldNorm(doc=190)
          0.31563544 = weight(abstract_txt:weighting in 190) [ClassicSimilarity], result of:
            0.31563544 = score(doc=190,freq=1.0), product of:
              0.4822718 = queryWeight, product of:
                2.075819 = boost
                6.9810805 = idf(docFreq=105, maxDocs=41962)
                0.033279724 = queryNorm
              0.6544763 = fieldWeight in 190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9810805 = idf(docFreq=105, maxDocs=41962)
                0.09375 = fieldNorm(doc=190)
        0.625 = coord(5/8)
    
  4. Beaulieu, M.; Jones, S.: Interactive searching and interface issues in the Okapi best match probabilistic retrieval system (1998) 0.47
    0.47409803 = sum of:
      0.47409803 = product of:
        0.75855684 = sum of:
          0.049903654 = weight(abstract_txt:system in 1431) [ClassicSimilarity], result of:
            0.049903654 = score(doc=1431,freq=2.0), product of:
              0.11192134 = queryWeight, product of:
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.033279724 = queryNorm
              0.4458815 = fieldWeight in 1431, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.09375 = fieldNorm(doc=1431)
          0.08450054 = weight(abstract_txt:evaluation in 1431) [ClassicSimilarity], result of:
            0.08450054 = score(doc=1431,freq=1.0), product of:
              0.20032768 = queryWeight, product of:
                1.3378704 = boost
                4.4993234 = idf(docFreq=1267, maxDocs=41962)
                0.033279724 = queryNorm
              0.42181158 = fieldWeight in 1431, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4993234 = idf(docFreq=1267, maxDocs=41962)
                0.09375 = fieldNorm(doc=1431)
          0.11268716 = weight(abstract_txt:relevance in 1431) [ClassicSimilarity], result of:
            0.11268716 = score(doc=1431,freq=1.0), product of:
              0.24270812 = queryWeight, product of:
                1.4726031 = boost
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.033279724 = queryNorm
              0.46429086 = fieldWeight in 1431, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.09375 = fieldNorm(doc=1431)
          0.19583008 = weight(abstract_txt:feedback in 1431) [ClassicSimilarity], result of:
            0.19583008 = score(doc=1431,freq=1.0), product of:
              0.35082263 = queryWeight, product of:
                1.770465 = boost
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.033279724 = queryNorm
              0.5582025 = fieldWeight in 1431, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.09375 = fieldNorm(doc=1431)
          0.31563544 = weight(abstract_txt:weighting in 1431) [ClassicSimilarity], result of:
            0.31563544 = score(doc=1431,freq=1.0), product of:
              0.4822718 = queryWeight, product of:
                2.075819 = boost
                6.9810805 = idf(docFreq=105, maxDocs=41962)
                0.033279724 = queryNorm
              0.6544763 = fieldWeight in 1431, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9810805 = idf(docFreq=105, maxDocs=41962)
                0.09375 = fieldNorm(doc=1431)
        0.625 = coord(5/8)
    
  5. Robertson, S.E.: On term selection for query expansion (1990) 0.46
    0.46093857 = sum of:
      0.46093857 = product of:
        0.92187715 = sum of:
          0.041168414 = weight(abstract_txt:system in 2650) [ClassicSimilarity], result of:
            0.041168414 = score(doc=2650,freq=1.0), product of:
              0.11192134 = queryWeight, product of:
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.033279724 = queryNorm
              0.36783347 = fieldWeight in 2650, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.109375 = fieldNorm(doc=2650)
          0.13146836 = weight(abstract_txt:relevance in 2650) [ClassicSimilarity], result of:
            0.13146836 = score(doc=2650,freq=1.0), product of:
              0.24270812 = queryWeight, product of:
                1.4726031 = boost
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.033279724 = queryNorm
              0.5416727 = fieldWeight in 2650, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.952436 = idf(docFreq=805, maxDocs=41962)
                0.109375 = fieldNorm(doc=2650)
          0.22846843 = weight(abstract_txt:feedback in 2650) [ClassicSimilarity], result of:
            0.22846843 = score(doc=2650,freq=1.0), product of:
              0.35082263 = queryWeight, product of:
                1.770465 = boost
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.033279724 = queryNorm
              0.6512363 = fieldWeight in 2650, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.95416 = idf(docFreq=295, maxDocs=41962)
                0.109375 = fieldNorm(doc=2650)
          0.5207719 = weight(abstract_txt:weighting in 2650) [ClassicSimilarity], result of:
            0.5207719 = score(doc=2650,freq=2.0), product of:
              0.4822718 = queryWeight, product of:
                2.075819 = boost
                6.9810805 = idf(docFreq=105, maxDocs=41962)
                0.033279724 = queryNorm
              1.0798308 = fieldWeight in 2650, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.9810805 = idf(docFreq=105, maxDocs=41962)
                0.109375 = fieldNorm(doc=2650)
        0.5 = coord(4/8)