Document (#19943)

Author
Walker, S.
Title
¬The Okapi online catalogue research projects
Source
The Online catalogue: development and directions. Ed.: C. Hildreth
Imprint
London : Library Association
Year
1989
Pages
S.84-106
Footnote
Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.424-435.
Theme
OPAC
Object
Okapi

Similar documents (author)

  1. Walker, S.: Okapi : Evaluating and enhancing an experimental online catalog (1987) 4.79 
    4.7947097 = sum of:
  4.7947097 = weight(author_txt:walker in 373) [ClassicSimilarity], result of:
    4.7947097 = fieldWeight in 373, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.6715355 = idf(docFreq=55, maxDocs=44218)
      0.625 = fieldNorm(doc=373)
  2. Walker, S.: Ease of use in online catalogues : a plea for the user (1986) 4.79 
    4.7947097 = sum of:
  4.7947097 = weight(author_txt:walker in 375) [ClassicSimilarity], result of:
    4.7947097 = fieldWeight in 375, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.6715355 = idf(docFreq=55, maxDocs=44218)
      0.625 = fieldNorm(doc=375)
  3. Walker, S.: ¬The free language approach to online catalogues (1985) 4.79 
    4.7947097 = sum of:
  4.7947097 = weight(author_txt:walker in 383) [ClassicSimilarity], result of:
    4.7947097 = fieldWeight in 383, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.6715355 = idf(docFreq=55, maxDocs=44218)
      0.625 = fieldNorm(doc=383)
  4. Walker, S.: ¬Der Mensch-Maschine-Dialog bei Online-Benutzer-Katalogen (1987) 4.79 
    4.7947097 = sum of:
  4.7947097 = weight(author_txt:walker in 827) [ClassicSimilarity], result of:
    4.7947097 = fieldWeight in 827, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.6715355 = idf(docFreq=55, maxDocs=44218)
      0.625 = fieldNorm(doc=827)
  5. Walker, R.: Categorization 4.79 
    4.7947097 = sum of:
  4.7947097 = weight(author_txt:walker in 1019) [ClassicSimilarity], result of:
    4.7947097 = fieldWeight in 1019, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.6715355 = idf(docFreq=55, maxDocs=44218)
      0.625 = fieldNorm(doc=1019)

Similar documents (content)

  1. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The changing face of OKAPI (1994) 1.11 
    1.1104331 = sum of:
  1.1104331 = sum of:
    0.032568444 = weight(abstract_txt:research in 1493) [ClassicSimilarity], result of:
      0.032568444 = score(doc=1493,freq=1.0), product of:
        0.13149263 = queryWeight, product of:
          3.170338 = idf(docFreq=5046, maxDocs=44218)
          0.041475903 = queryNorm
        0.24768265 = fieldWeight in 1493, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          3.170338 = idf(docFreq=5046, maxDocs=44218)
          0.078125 = fieldNorm(doc=1493)
    0.050363023 = weight(abstract_txt:online in 1493) [ClassicSimilarity], result of:
      0.050363023 = score(doc=1493,freq=1.0), product of:
        0.17583741 = queryWeight, product of:
          1.1563916 = boost
          3.6661522 = idf(docFreq=3073, maxDocs=44218)
          0.041475903 = queryNorm
        0.28641814 = fieldWeight in 1493, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          3.6661522 = idf(docFreq=3073, maxDocs=44218)
          0.078125 = fieldNorm(doc=1493)
    0.13363248 = weight(abstract_txt:catalogue in 1493) [ClassicSimilarity], result of:
      0.13363248 = score(doc=1493,freq=1.0), product of:
        0.33701152 = queryWeight, product of:
          1.6009276 = boost
          5.0754814 = idf(docFreq=750, maxDocs=44218)
          0.041475903 = queryNorm
        0.396522 = fieldWeight in 1493, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          5.0754814 = idf(docFreq=750, maxDocs=44218)
          0.078125 = fieldNorm(doc=1493)
    0.15158738 = weight(abstract_txt:projects in 1493) [ClassicSimilarity], result of:
      0.15158738 = score(doc=1493,freq=1.0), product of:
        0.36656034 = queryWeight, product of:
          1.6696368 = boost
          5.293313 = idf(docFreq=603, maxDocs=44218)
          0.041475903 = queryNorm
        0.41354007 = fieldWeight in 1493, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          5.293313 = idf(docFreq=603, maxDocs=44218)
          0.078125 = fieldNorm(doc=1493)
    0.74228185 = weight(abstract_txt:okapi in 1493) [ClassicSimilarity], result of:
      0.74228185 = score(doc=1493,freq=2.0), product of:
        0.83895624 = queryWeight, product of:
          2.5259163 = boost
          8.008008 = idf(docFreq=39, maxDocs=44218)
          0.041475903 = queryNorm
        0.88476825 = fieldWeight in 1493, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          8.008008 = idf(docFreq=39, maxDocs=44218)
          0.078125 = fieldNorm(doc=1493)
  2. Okapi and information retrieval (1997) 0.89 
    0.8919055 = sum of:
  0.8919055 = product of:
    2.2297637 = sum of:
      0.13027377 = weight(abstract_txt:research in 7449) [ClassicSimilarity], result of:
        0.13027377 = score(doc=7449,freq=1.0), product of:
          0.13149263 = queryWeight, product of:
            3.170338 = idf(docFreq=5046, maxDocs=44218)
            0.041475903 = queryNorm
          0.9907306 = fieldWeight in 7449, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.170338 = idf(docFreq=5046, maxDocs=44218)
            0.3125 = fieldNorm(doc=7449)
      2.09949 = weight(abstract_txt:okapi in 7449) [ClassicSimilarity], result of:
        2.09949 = score(doc=7449,freq=1.0), product of:
          0.83895624 = queryWeight, product of:
            2.5259163 = boost
            8.008008 = idf(docFreq=39, maxDocs=44218)
            0.041475903 = queryNorm
          2.5025024 = fieldWeight in 7449, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            8.008008 = idf(docFreq=39, maxDocs=44218)
            0.3125 = fieldNorm(doc=7449)
    0.4 = coord(2/5)
  3. Robertson, S.E.: Overview of the Okapi projects (1997) 0.87 
    0.8714221 = sum of:
  0.8714221 = product of:
    1.4523702 = sum of:
      0.04559582 = weight(abstract_txt:research in 4703) [ClassicSimilarity], result of:
        0.04559582 = score(doc=4703,freq=1.0), product of:
          0.13149263 = queryWeight, product of:
            3.170338 = idf(docFreq=5046, maxDocs=44218)
            0.041475903 = queryNorm
          0.3467557 = fieldWeight in 4703, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.170338 = idf(docFreq=5046, maxDocs=44218)
            0.109375 = fieldNorm(doc=4703)
      0.36757988 = weight(abstract_txt:projects in 4703) [ClassicSimilarity], result of:
        0.36757988 = score(doc=4703,freq=3.0), product of:
          0.36656034 = queryWeight, product of:
            1.6696368 = boost
            5.293313 = idf(docFreq=603, maxDocs=44218)
            0.041475903 = queryNorm
          1.0027814 = fieldWeight in 4703, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.293313 = idf(docFreq=603, maxDocs=44218)
            0.109375 = fieldNorm(doc=4703)
      1.0391945 = weight(abstract_txt:okapi in 4703) [ClassicSimilarity], result of:
        1.0391945 = score(doc=4703,freq=2.0), product of:
          0.83895624 = queryWeight, product of:
            2.5259163 = boost
            8.008008 = idf(docFreq=39, maxDocs=44218)
            0.041475903 = queryNorm
          1.2386755 = fieldWeight in 4703, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            8.008008 = idf(docFreq=39, maxDocs=44218)
            0.109375 = fieldNorm(doc=4703)
    0.6 = coord(3/5)
  4. 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) 0.72 
    0.7247297 = sum of:
  0.7247297 = product of:
    0.90591216 = sum of:
      0.055270478 = weight(abstract_txt:research in 1318) [ClassicSimilarity], result of:
        0.055270478 = score(doc=1318,freq=2.0), product of:
          0.13149263 = queryWeight, product of:
            3.170338 = idf(docFreq=5046, maxDocs=44218)
            0.041475903 = queryNorm
          0.4203314 = fieldWeight in 1318, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.170338 = idf(docFreq=5046, maxDocs=44218)
            0.09375 = fieldNorm(doc=1318)
      0.06043563 = weight(abstract_txt:online in 1318) [ClassicSimilarity], result of:
        0.06043563 = score(doc=1318,freq=1.0), product of:
          0.17583741 = queryWeight, product of:
            1.1563916 = boost
            3.6661522 = idf(docFreq=3073, maxDocs=44218)
            0.041475903 = queryNorm
          0.34370178 = fieldWeight in 1318, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.6661522 = idf(docFreq=3073, maxDocs=44218)
            0.09375 = fieldNorm(doc=1318)
      0.16035897 = weight(abstract_txt:catalogue in 1318) [ClassicSimilarity], result of:
        0.16035897 = score(doc=1318,freq=1.0), product of:
          0.33701152 = queryWeight, product of:
            1.6009276 = boost
            5.0754814 = idf(docFreq=750, maxDocs=44218)
            0.041475903 = queryNorm
          0.47582638 = fieldWeight in 1318, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.0754814 = idf(docFreq=750, maxDocs=44218)
            0.09375 = fieldNorm(doc=1318)
      0.62984705 = weight(abstract_txt:okapi in 1318) [ClassicSimilarity], result of:
        0.62984705 = score(doc=1318,freq=1.0), product of:
          0.83895624 = queryWeight, product of:
            2.5259163 = boost
            8.008008 = idf(docFreq=39, maxDocs=44218)
            0.041475903 = queryNorm
          0.7507508 = fieldWeight in 1318, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            8.008008 = idf(docFreq=39, maxDocs=44218)
            0.09375 = fieldNorm(doc=1318)
    0.8 = coord(4/5)
  5. Keen, M.: ¬The Okapi projects (1997) 0.59 
    0.59139955 = sum of:
  0.59139955 = product of:
    1.4784988 = sum of:
      0.42875388 = weight(abstract_txt:projects in 7461) [ClassicSimilarity], result of:
        0.42875388 = score(doc=7461,freq=2.0), product of:
          0.36656034 = queryWeight, product of:
            1.6696368 = boost
            5.293313 = idf(docFreq=603, maxDocs=44218)
            0.041475903 = queryNorm
          1.169668 = fieldWeight in 7461, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.293313 = idf(docFreq=603, maxDocs=44218)
            0.15625 = fieldNorm(doc=7461)
      1.049745 = weight(abstract_txt:okapi in 7461) [ClassicSimilarity], result of:
        1.049745 = score(doc=7461,freq=1.0), product of:
          0.83895624 = queryWeight, product of:
            2.5259163 = boost
            8.008008 = idf(docFreq=39, maxDocs=44218)
            0.041475903 = queryNorm
          1.2512512 = fieldWeight in 7461, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            8.008008 = idf(docFreq=39, maxDocs=44218)
            0.15625 = fieldNorm(doc=7461)
    0.4 = coord(2/5)