Document (#10563)

Author
Fieldhouse, M.
Hancock-Beaulieu, M.
Title
¬The changing face of OKAPI
Source
Library review. 43(1994) no.4, S.38-50
Year
1994
Abstract
Describes the OKAPI projects and OKAPI's development as an experimental online catalogue system over 10 years, first at the University of Westminster (formerly the Polytechnique of Central London) and subsequently at City University, London. The 1st OKAPI project in 1984 introduced 'best match' retrieval and focused on the user interface design. The 2nd investigated word stemming, spelling correction and cross reference tables as retrieval aids. A comparative study of 2 library catalogues was undertaken in 1987, while in 1988 query expansion and relevance feedback were introduced and evaluated by laboratory tests. In 1990 live evaluation of automatic query expansion was carried out and in 1993 subject enhancement of bibliographic records was investigated. The latest project has examined the design of a graphical user interface to support interactive query expansion. Discusses the research and evaluation of each project
Theme
OPAC
Suchoberflächen
Semantisches Umfeld in Indexierung u. Retrieval
Object
OKAPI

Similar documents (author)

  1. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996) 6.51
    6.509958 = sum of:
      6.509958 = sum of:
        1.6584669 = weight(author_txt:beaulieu in 28) [ClassicSimilarity], result of:
          1.6584669 = score(doc=28,freq=1.0), product of:
            0.47831872 = queryWeight, product of:
              7.925221 = idf(docFreq=41, maxDocs=42740)
              0.06035399 = queryNorm
            3.4672842 = fieldWeight in 28, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.925221 = idf(docFreq=41, maxDocs=42740)
              0.4375 = fieldNorm(doc=28)
        1.7946937 = weight(author_txt:hancock in 28) [ClassicSimilarity], result of:
          1.7946937 = score(doc=28,freq=1.0), product of:
            0.5041654 = queryWeight, product of:
              1.0266628 = boost
              8.13653 = idf(docFreq=33, maxDocs=42740)
              0.06035399 = queryNorm
            3.559732 = fieldWeight in 28, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.13653 = idf(docFreq=33, maxDocs=42740)
              0.4375 = fieldNorm(doc=28)
        3.056797 = weight(author_txt:fieldhouse in 28) [ClassicSimilarity], result of:
          3.056797 = score(doc=28,freq=1.0), product of:
            0.71904695 = queryWeight, product of:
              1.2260832 = boost
              9.71698 = idf(docFreq=6, maxDocs=42740)
              0.06035399 = queryNorm
            4.2511787 = fieldWeight in 28, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.71698 = idf(docFreq=6, maxDocs=42740)
              0.4375 = fieldNorm(doc=28)
    
  2. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬An evaluation of interactive query expansion in an online library catalogue with a graphical user interface (1995) 5.58
    5.5799637 = sum of:
      5.5799637 = sum of:
        1.4215431 = weight(author_txt:beaulieu in 1735) [ClassicSimilarity], result of:
          1.4215431 = score(doc=1735,freq=1.0), product of:
            0.47831872 = queryWeight, product of:
              7.925221 = idf(docFreq=41, maxDocs=42740)
              0.06035399 = queryNorm
            2.971958 = fieldWeight in 1735, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.925221 = idf(docFreq=41, maxDocs=42740)
              0.375 = fieldNorm(doc=1735)
        1.5383089 = weight(author_txt:hancock in 1735) [ClassicSimilarity], result of:
          1.5383089 = score(doc=1735,freq=1.0), product of:
            0.5041654 = queryWeight, product of:
              1.0266628 = boost
              8.13653 = idf(docFreq=33, maxDocs=42740)
              0.06035399 = queryNorm
            3.0511987 = fieldWeight in 1735, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.13653 = idf(docFreq=33, maxDocs=42740)
              0.375 = fieldNorm(doc=1735)
        2.6201117 = weight(author_txt:fieldhouse in 1735) [ClassicSimilarity], result of:
          2.6201117 = score(doc=1735,freq=1.0), product of:
            0.71904695 = queryWeight, product of:
              1.2260832 = boost
              9.71698 = idf(docFreq=6, maxDocs=42740)
              0.06035399 = queryNorm
            3.6438675 = fieldWeight in 1735, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.71698 = idf(docFreq=6, maxDocs=42740)
              0.375 = fieldNorm(doc=1735)
    
  3. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬A graphical interface for OKAPI : the design and evaluation of an online catalogue system with direct manipulation interaction for subject access (1994) 5.58
    5.5799637 = sum of:
      5.5799637 = sum of:
        1.4215431 = weight(author_txt:beaulieu in 2319) [ClassicSimilarity], result of:
          1.4215431 = score(doc=2319,freq=1.0), product of:
            0.47831872 = queryWeight, product of:
              7.925221 = idf(docFreq=41, maxDocs=42740)
              0.06035399 = queryNorm
            2.971958 = fieldWeight in 2319, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.925221 = idf(docFreq=41, maxDocs=42740)
              0.375 = fieldNorm(doc=2319)
        1.5383089 = weight(author_txt:hancock in 2319) [ClassicSimilarity], result of:
          1.5383089 = score(doc=2319,freq=1.0), product of:
            0.5041654 = queryWeight, product of:
              1.0266628 = boost
              8.13653 = idf(docFreq=33, maxDocs=42740)
              0.06035399 = queryNorm
            3.0511987 = fieldWeight in 2319, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.13653 = idf(docFreq=33, maxDocs=42740)
              0.375 = fieldNorm(doc=2319)
        2.6201117 = weight(author_txt:fieldhouse in 2319) [ClassicSimilarity], result of:
          2.6201117 = score(doc=2319,freq=1.0), product of:
            0.71904695 = queryWeight, product of:
              1.2260832 = boost
              9.71698 = idf(docFreq=6, maxDocs=42740)
              0.06035399 = queryNorm
            3.6438675 = fieldWeight in 2319, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.71698 = idf(docFreq=6, maxDocs=42740)
              0.375 = fieldNorm(doc=2319)
    
  4. Hancock-Beaulieu, M.M.: User friendliness and human-computer interaction in online library catalogues (1992) 2.63
    2.6309795 = sum of:
      2.6309795 = product of:
        3.9464693 = sum of:
          1.8953907 = weight(author_txt:beaulieu in 1255) [ClassicSimilarity], result of:
            1.8953907 = score(doc=1255,freq=1.0), product of:
              0.47831872 = queryWeight, product of:
                7.925221 = idf(docFreq=41, maxDocs=42740)
                0.06035399 = queryNorm
              3.9626105 = fieldWeight in 1255, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.925221 = idf(docFreq=41, maxDocs=42740)
                0.5 = fieldNorm(doc=1255)
          2.0510786 = weight(author_txt:hancock in 1255) [ClassicSimilarity], result of:
            2.0510786 = score(doc=1255,freq=1.0), product of:
              0.5041654 = queryWeight, product of:
                1.0266628 = boost
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.06035399 = queryNorm
              4.068265 = fieldWeight in 1255, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.5 = fieldNorm(doc=1255)
        0.6666667 = coord(2/3)
    
  5. Hancock-Beaulieu, M.: Query expansion : advances in research in online catalogues (1992) 2.63
    2.6309795 = sum of:
      2.6309795 = product of:
        3.9464693 = sum of:
          1.8953907 = weight(author_txt:beaulieu in 2351) [ClassicSimilarity], result of:
            1.8953907 = score(doc=2351,freq=1.0), product of:
              0.47831872 = queryWeight, product of:
                7.925221 = idf(docFreq=41, maxDocs=42740)
                0.06035399 = queryNorm
              3.9626105 = fieldWeight in 2351, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.925221 = idf(docFreq=41, maxDocs=42740)
                0.5 = fieldNorm(doc=2351)
          2.0510786 = weight(author_txt:hancock in 2351) [ClassicSimilarity], result of:
            2.0510786 = score(doc=2351,freq=1.0), product of:
              0.5041654 = queryWeight, product of:
                1.0266628 = boost
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.06035399 = queryNorm
              4.068265 = fieldWeight in 2351, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.13653 = idf(docFreq=33, maxDocs=42740)
                0.5 = fieldNorm(doc=2351)
        0.6666667 = coord(2/3)
    

Similar documents (content)

  1. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996) 0.37
    0.3652856 = sum of:
      0.3652856 = product of:
        1.0146822 = sum of:
          0.09135866 = weight(abstract_txt:city in 28) [ClassicSimilarity], result of:
            0.09135866 = score(doc=28,freq=1.0), product of:
              0.13884625 = queryWeight, product of:
                7.0185 = idf(docFreq=103, maxDocs=42740)
                0.019782895 = queryNorm
              0.6579844 = fieldWeight in 28, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0185 = idf(docFreq=103, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
          0.026333984 = weight(abstract_txt:user in 28) [ClassicSimilarity], result of:
            0.026333984 = score(doc=28,freq=1.0), product of:
              0.07633471 = queryWeight, product of:
                1.0485978 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.019782895 = queryNorm
              0.34498048 = fieldWeight in 28, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
          0.04595387 = weight(abstract_txt:design in 28) [ClassicSimilarity], result of:
            0.04595387 = score(doc=28,freq=2.0), product of:
              0.087817766 = queryWeight, product of:
                1.1247063 = boost
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.019782895 = queryNorm
              0.5232867 = fieldWeight in 28, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
          0.04064369 = weight(abstract_txt:university in 28) [ClassicSimilarity], result of:
            0.04064369 = score(doc=28,freq=1.0), product of:
              0.101946674 = queryWeight, product of:
                1.2118098 = boost
                4.2525434 = idf(docFreq=1652, maxDocs=42740)
                0.019782895 = queryNorm
              0.39867595 = fieldWeight in 28, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2525434 = idf(docFreq=1652, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
          0.047928046 = weight(abstract_txt:evaluation in 28) [ClassicSimilarity], result of:
            0.047928046 = score(doc=28,freq=1.0), product of:
              0.11379001 = queryWeight, product of:
                1.2802653 = boost
                4.492771 = idf(docFreq=1299, maxDocs=42740)
                0.019782895 = queryNorm
              0.4211973 = fieldWeight in 28, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.492771 = idf(docFreq=1299, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
          0.06010966 = weight(abstract_txt:interface in 28) [ClassicSimilarity], result of:
            0.06010966 = score(doc=28,freq=1.0), product of:
              0.13233474 = queryWeight, product of:
                1.380654 = boost
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.019782895 = queryNorm
              0.45422435 = fieldWeight in 28, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
          0.11889551 = weight(abstract_txt:query in 28) [ClassicSimilarity], result of:
            0.11889551 = score(doc=28,freq=2.0), product of:
              0.189456 = queryWeight, product of:
                2.0232415 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.019782895 = queryNorm
              0.62756264 = fieldWeight in 28, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
          0.181512 = weight(abstract_txt:expansion in 28) [ClassicSimilarity], result of:
            0.181512 = score(doc=28,freq=1.0), product of:
              0.31647906 = queryWeight, product of:
                2.614966 = boost
                6.117713 = idf(docFreq=255, maxDocs=42740)
                0.019782895 = queryNorm
              0.57353556 = fieldWeight in 28, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.117713 = idf(docFreq=255, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
          0.4019468 = weight(abstract_txt:okapi in 28) [ClassicSimilarity], result of:
            0.4019468 = score(doc=28,freq=1.0), product of:
              0.5376758 = queryWeight, product of:
                3.4084253 = boost
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.019782895 = queryNorm
              0.74756354 = fieldWeight in 28, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.09375 = fieldNorm(doc=28)
        0.36 = coord(9/25)
    
  2. Beaulieu, M.; Payne, A.; Do, T.; Jones, S.: ENQUIRE Okapi project (1996) 0.33
    0.32553154 = sum of:
      0.32553154 = product of:
        1.0172861 = sum of:
          0.03800983 = weight(abstract_txt:user in 3438) [ClassicSimilarity], result of:
            0.03800983 = score(doc=3438,freq=3.0), product of:
              0.07633471 = queryWeight, product of:
                1.0485978 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.019782895 = queryNorm
              0.49793643 = fieldWeight in 3438, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.078125 = fieldNorm(doc=3438)
          0.039940037 = weight(abstract_txt:evaluation in 3438) [ClassicSimilarity], result of:
            0.039940037 = score(doc=3438,freq=1.0), product of:
              0.11379001 = queryWeight, product of:
                1.2802653 = boost
                4.492771 = idf(docFreq=1299, maxDocs=42740)
                0.019782895 = queryNorm
              0.35099775 = fieldWeight in 3438, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.492771 = idf(docFreq=1299, maxDocs=42740)
                0.078125 = fieldNorm(doc=3438)
          0.07083992 = weight(abstract_txt:interface in 3438) [ClassicSimilarity], result of:
            0.07083992 = score(doc=3438,freq=2.0), product of:
              0.13233474 = queryWeight, product of:
                1.380654 = boost
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.019782895 = queryNorm
              0.53530854 = fieldWeight in 3438, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.078125 = fieldNorm(doc=3438)
          0.07843753 = weight(abstract_txt:project in 3438) [ClassicSimilarity], result of:
            0.07843753 = score(doc=3438,freq=2.0), product of:
              0.1621318 = queryWeight, product of:
                1.871663 = boost
                4.3787556 = idf(docFreq=1456, maxDocs=42740)
                0.019782895 = queryNorm
              0.4837887 = fieldWeight in 3438, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.3787556 = idf(docFreq=1456, maxDocs=42740)
                0.078125 = fieldNorm(doc=3438)
          0.14210954 = weight(abstract_txt:london in 3438) [ClassicSimilarity], result of:
            0.14210954 = score(doc=3438,freq=1.0), product of:
              0.26520434 = queryWeight, product of:
                1.9545115 = boost
                6.8588696 = idf(docFreq=121, maxDocs=42740)
                0.019782895 = queryNorm
              0.5358492 = fieldWeight in 3438, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8588696 = idf(docFreq=121, maxDocs=42740)
                0.078125 = fieldNorm(doc=3438)
          0.09907959 = weight(abstract_txt:query in 3438) [ClassicSimilarity], result of:
            0.09907959 = score(doc=3438,freq=2.0), product of:
              0.189456 = queryWeight, product of:
                2.0232415 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.019782895 = queryNorm
              0.5229688 = fieldWeight in 3438, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.078125 = fieldNorm(doc=3438)
          0.21391395 = weight(abstract_txt:expansion in 3438) [ClassicSimilarity], result of:
            0.21391395 = score(doc=3438,freq=2.0), product of:
              0.31647906 = queryWeight, product of:
                2.614966 = boost
                6.117713 = idf(docFreq=255, maxDocs=42740)
                0.019782895 = queryNorm
              0.67591816 = fieldWeight in 3438, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.117713 = idf(docFreq=255, maxDocs=42740)
                0.078125 = fieldNorm(doc=3438)
          0.3349557 = weight(abstract_txt:okapi in 3438) [ClassicSimilarity], result of:
            0.3349557 = score(doc=3438,freq=1.0), product of:
              0.5376758 = queryWeight, product of:
                3.4084253 = boost
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.019782895 = queryNorm
              0.6229696 = fieldWeight in 3438, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.078125 = fieldNorm(doc=3438)
        0.32 = coord(8/25)
    
  3. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬A graphical interface for OKAPI : the design and evaluation of an online catalogue system with direct manipulation interaction for subject access (1994) 0.32
    0.31905913 = sum of:
      0.31905913 = product of:
        0.9970598 = sum of:
          0.026333984 = weight(abstract_txt:user in 2319) [ClassicSimilarity], result of:
            0.026333984 = score(doc=2319,freq=1.0), product of:
              0.07633471 = queryWeight, product of:
                1.0485978 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.019782895 = queryNorm
              0.34498048 = fieldWeight in 2319, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.09375 = fieldNorm(doc=2319)
          0.056281757 = weight(abstract_txt:design in 2319) [ClassicSimilarity], result of:
            0.056281757 = score(doc=2319,freq=3.0), product of:
              0.087817766 = queryWeight, product of:
                1.1247063 = boost
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.019782895 = queryNorm
              0.6408926 = fieldWeight in 2319, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.09375 = fieldNorm(doc=2319)
          0.067780495 = weight(abstract_txt:evaluation in 2319) [ClassicSimilarity], result of:
            0.067780495 = score(doc=2319,freq=2.0), product of:
              0.11379001 = queryWeight, product of:
                1.2802653 = boost
                4.492771 = idf(docFreq=1299, maxDocs=42740)
                0.019782895 = queryNorm
              0.59566295 = fieldWeight in 2319, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.492771 = idf(docFreq=1299, maxDocs=42740)
                0.09375 = fieldNorm(doc=2319)
          0.0850079 = weight(abstract_txt:interface in 2319) [ClassicSimilarity], result of:
            0.0850079 = score(doc=2319,freq=2.0), product of:
              0.13233474 = queryWeight, product of:
                1.380654 = boost
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.019782895 = queryNorm
              0.6423702 = fieldWeight in 2319, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.09375 = fieldNorm(doc=2319)
          0.09412504 = weight(abstract_txt:project in 2319) [ClassicSimilarity], result of:
            0.09412504 = score(doc=2319,freq=2.0), product of:
              0.1621318 = queryWeight, product of:
                1.871663 = boost
                4.3787556 = idf(docFreq=1456, maxDocs=42740)
                0.019782895 = queryNorm
              0.58054644 = fieldWeight in 2319, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.3787556 = idf(docFreq=1456, maxDocs=42740)
                0.09375 = fieldNorm(doc=2319)
          0.084071815 = weight(abstract_txt:query in 2319) [ClassicSimilarity], result of:
            0.084071815 = score(doc=2319,freq=1.0), product of:
              0.189456 = queryWeight, product of:
                2.0232415 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.019782895 = queryNorm
              0.44375378 = fieldWeight in 2319, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.09375 = fieldNorm(doc=2319)
          0.181512 = weight(abstract_txt:expansion in 2319) [ClassicSimilarity], result of:
            0.181512 = score(doc=2319,freq=1.0), product of:
              0.31647906 = queryWeight, product of:
                2.614966 = boost
                6.117713 = idf(docFreq=255, maxDocs=42740)
                0.019782895 = queryNorm
              0.57353556 = fieldWeight in 2319, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.117713 = idf(docFreq=255, maxDocs=42740)
                0.09375 = fieldNorm(doc=2319)
          0.4019468 = weight(abstract_txt:okapi in 2319) [ClassicSimilarity], result of:
            0.4019468 = score(doc=2319,freq=1.0), product of:
              0.5376758 = queryWeight, product of:
                3.4084253 = boost
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.019782895 = queryNorm
              0.74756354 = fieldWeight in 2319, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.09375 = fieldNorm(doc=2319)
        0.32 = coord(8/25)
    
  4. Robertson, S.E.: OKAPI at TREC-3 (1995) 0.27
    0.2691252 = sum of:
      0.2691252 = product of:
        0.9611614 = sum of:
          0.09135866 = weight(abstract_txt:city in 610) [ClassicSimilarity], result of:
            0.09135866 = score(doc=610,freq=1.0), product of:
              0.13884625 = queryWeight, product of:
                7.0185 = idf(docFreq=103, maxDocs=42740)
                0.019782895 = queryNorm
              0.6579844 = fieldWeight in 610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0185 = idf(docFreq=103, maxDocs=42740)
                0.09375 = fieldNorm(doc=610)
          0.026333984 = weight(abstract_txt:user in 610) [ClassicSimilarity], result of:
            0.026333984 = score(doc=610,freq=1.0), product of:
              0.07633471 = queryWeight, product of:
                1.0485978 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.019782895 = queryNorm
              0.34498048 = fieldWeight in 610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.09375 = fieldNorm(doc=610)
          0.04064369 = weight(abstract_txt:university in 610) [ClassicSimilarity], result of:
            0.04064369 = score(doc=610,freq=1.0), product of:
              0.101946674 = queryWeight, product of:
                1.2118098 = boost
                4.2525434 = idf(docFreq=1652, maxDocs=42740)
                0.019782895 = queryNorm
              0.39867595 = fieldWeight in 610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2525434 = idf(docFreq=1652, maxDocs=42740)
                0.09375 = fieldNorm(doc=610)
          0.06010966 = weight(abstract_txt:interface in 610) [ClassicSimilarity], result of:
            0.06010966 = score(doc=610,freq=1.0), product of:
              0.13233474 = queryWeight, product of:
                1.380654 = boost
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.019782895 = queryNorm
              0.45422435 = fieldWeight in 610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.09375 = fieldNorm(doc=610)
          0.084071815 = weight(abstract_txt:query in 610) [ClassicSimilarity], result of:
            0.084071815 = score(doc=610,freq=1.0), product of:
              0.189456 = queryWeight, product of:
                2.0232415 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.019782895 = queryNorm
              0.44375378 = fieldWeight in 610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.09375 = fieldNorm(doc=610)
          0.25669673 = weight(abstract_txt:expansion in 610) [ClassicSimilarity], result of:
            0.25669673 = score(doc=610,freq=2.0), product of:
              0.31647906 = queryWeight, product of:
                2.614966 = boost
                6.117713 = idf(docFreq=255, maxDocs=42740)
                0.019782895 = queryNorm
              0.8111018 = fieldWeight in 610, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.117713 = idf(docFreq=255, maxDocs=42740)
                0.09375 = fieldNorm(doc=610)
          0.4019468 = weight(abstract_txt:okapi in 610) [ClassicSimilarity], result of:
            0.4019468 = score(doc=610,freq=1.0), product of:
              0.5376758 = queryWeight, product of:
                3.4084253 = boost
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.019782895 = queryNorm
              0.74756354 = fieldWeight in 610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.09375 = fieldNorm(doc=610)
        0.28 = coord(7/25)
    
  5. Beaulieu, M.; Robertson, S.; Rasmussen, E.: Evaluating interactive systems in TREC (1996) 0.26
    0.26347294 = sum of:
      0.26347294 = product of:
        0.823353 = sum of:
          0.076132216 = weight(abstract_txt:city in 3067) [ClassicSimilarity], result of:
            0.076132216 = score(doc=3067,freq=1.0), product of:
              0.13884625 = queryWeight, product of:
                7.0185 = idf(docFreq=103, maxDocs=42740)
                0.019782895 = queryNorm
              0.5483203 = fieldWeight in 3067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0185 = idf(docFreq=103, maxDocs=42740)
                0.078125 = fieldNorm(doc=3067)
          0.10811247 = weight(abstract_txt:laboratory in 3067) [ClassicSimilarity], result of:
            0.10811247 = score(doc=3067,freq=2.0), product of:
              0.13922878 = queryWeight, product of:
                1.0013766 = boost
                7.0281615 = idf(docFreq=102, maxDocs=42740)
                0.019782895 = queryNorm
              0.7765095 = fieldWeight in 3067, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.0281615 = idf(docFreq=102, maxDocs=42740)
                0.078125 = fieldNorm(doc=3067)
          0.031034898 = weight(abstract_txt:user in 3067) [ClassicSimilarity], result of:
            0.031034898 = score(doc=3067,freq=2.0), product of:
              0.07633471 = queryWeight, product of:
                1.0485978 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.019782895 = queryNorm
              0.4065634 = fieldWeight in 3067, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.078125 = fieldNorm(doc=3067)
          0.027078576 = weight(abstract_txt:design in 3067) [ClassicSimilarity], result of:
            0.027078576 = score(doc=3067,freq=1.0), product of:
              0.087817766 = queryWeight, product of:
                1.1247063 = boost
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.019782895 = queryNorm
              0.30834964 = fieldWeight in 3067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.078125 = fieldNorm(doc=3067)
          0.03386974 = weight(abstract_txt:university in 3067) [ClassicSimilarity], result of:
            0.03386974 = score(doc=3067,freq=1.0), product of:
              0.101946674 = queryWeight, product of:
                1.2118098 = boost
                4.2525434 = idf(docFreq=1652, maxDocs=42740)
                0.019782895 = queryNorm
              0.33222997 = fieldWeight in 3067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2525434 = idf(docFreq=1652, maxDocs=42740)
                0.078125 = fieldNorm(doc=3067)
          0.14210954 = weight(abstract_txt:london in 3067) [ClassicSimilarity], result of:
            0.14210954 = score(doc=3067,freq=1.0), product of:
              0.26520434 = queryWeight, product of:
                1.9545115 = boost
                6.8588696 = idf(docFreq=121, maxDocs=42740)
                0.019782895 = queryNorm
              0.5358492 = fieldWeight in 3067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8588696 = idf(docFreq=121, maxDocs=42740)
                0.078125 = fieldNorm(doc=3067)
          0.07005984 = weight(abstract_txt:query in 3067) [ClassicSimilarity], result of:
            0.07005984 = score(doc=3067,freq=1.0), product of:
              0.189456 = queryWeight, product of:
                2.0232415 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.019782895 = queryNorm
              0.36979482 = fieldWeight in 3067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.078125 = fieldNorm(doc=3067)
          0.3349557 = weight(abstract_txt:okapi in 3067) [ClassicSimilarity], result of:
            0.3349557 = score(doc=3067,freq=1.0), product of:
              0.5376758 = queryWeight, product of:
                3.4084253 = boost
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.019782895 = queryNorm
              0.6229696 = fieldWeight in 3067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.974011 = idf(docFreq=39, maxDocs=42740)
                0.078125 = fieldNorm(doc=3067)
        0.32 = coord(8/25)