Document (#26672)

Author
Braun, T.
Title
Dokumentklassifikation durch Clustering
Source
http://www.cl-ki.uni-osnabrueck.de/~bikini/Vortraege/Klassifikation/classif.html
Year
o.J.
Abstract
Beim Clustering werden Dokumente aufgrund von Ähnlichkeiten untereinander klassifiziert, im Gegensatz z.B. zur Klassifikation anhand einer Ontologie. Bei den gebräuchlichen Clusteringverfahren wird ein Dokument als die Menge seiner Wörter angesehen. Zur Bestimmung der Ähnlichkeit zwischen Dokumenten werden verschiedene Ähnlichkeitsmaße definiert.
Theme
Automatisches Klassifizieren

Similar documents (author)

  1. Braun, H.: Sacherschließung 1978 (1979) 5.33
    5.3271337 = sum of:
      5.3271337 = weight(author_txt:braun in 1600) [ClassicSimilarity], result of:
        5.3271337 = fieldWeight in 1600, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.523414 = idf(docFreq=23, maxDocs=44421)
          0.625 = fieldNorm(doc=1600)
    
  2. Braun, M.: Aufbau eines Fax-Netzes (1993) 5.33
    5.3271337 = sum of:
      5.3271337 = weight(author_txt:braun in 3028) [ClassicSimilarity], result of:
        5.3271337 = fieldWeight in 3028, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.523414 = idf(docFreq=23, maxDocs=44421)
          0.625 = fieldNorm(doc=3028)
    
  3. Braun, I.: Medienökologie - ein blinder Fleck der Sozialwissenschaften : auch Computernetze sind an der Zerstörung des Planeten beteiligt (1995) 5.33
    5.3271337 = sum of:
      5.3271337 = weight(author_txt:braun in 2175) [ClassicSimilarity], result of:
        5.3271337 = fieldWeight in 2175, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.523414 = idf(docFreq=23, maxDocs=44421)
          0.625 = fieldNorm(doc=2175)
    
  4. Braun, W.: Etymologisches Wörterbuch des Deutschen (1995) 5.33
    5.3271337 = sum of:
      5.3271337 = weight(author_txt:braun in 4424) [ClassicSimilarity], result of:
        5.3271337 = fieldWeight in 4424, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.523414 = idf(docFreq=23, maxDocs=44421)
          0.625 = fieldNorm(doc=4424)
    
  5. Braun, H.: Neuronale Netze : Optimierung durch Lernen und Evolution (1997) 5.33
    5.3271337 = sum of:
      5.3271337 = weight(author_txt:braun in 730) [ClassicSimilarity], result of:
        5.3271337 = fieldWeight in 730, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.523414 = idf(docFreq=23, maxDocs=44421)
          0.625 = fieldNorm(doc=730)
    

Similar documents (content)

  1. Dahmen, E.: Klassifikation als Ordnundssystem im elektronischen Pressearchiv (2003) 0.19
    0.18634363 = sum of:
      0.18634363 = product of:
        0.6655129 = sum of:
          0.013111703 = weight(abstract_txt:durch in 2513) [ClassicSimilarity], result of:
            0.013111703 = score(doc=2513,freq=1.0), product of:
              0.06587499 = queryWeight, product of:
                4.246169 = idf(docFreq=1728, maxDocs=44421)
                0.015513982 = queryNorm
              0.19903918 = fieldWeight in 2513, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.246169 = idf(docFreq=1728, maxDocs=44421)
                0.046875 = fieldNorm(doc=2513)
          0.032010533 = weight(abstract_txt:beim in 2513) [ClassicSimilarity], result of:
            0.032010533 = score(doc=2513,freq=1.0), product of:
              0.11943815 = queryWeight, product of:
                1.3465152 = boost
                5.717531 = idf(docFreq=396, maxDocs=44421)
                0.015513982 = queryNorm
              0.26800928 = fieldWeight in 2513, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.717531 = idf(docFreq=396, maxDocs=44421)
                0.046875 = fieldNorm(doc=2513)
          0.036766727 = weight(abstract_txt:verschiedene in 2513) [ClassicSimilarity], result of:
            0.036766727 = score(doc=2513,freq=1.0), product of:
              0.13099392 = queryWeight, product of:
                1.4101498 = boost
                5.987735 = idf(docFreq=302, maxDocs=44421)
                0.015513982 = queryNorm
              0.28067505 = fieldWeight in 2513, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.987735 = idf(docFreq=302, maxDocs=44421)
                0.046875 = fieldNorm(doc=2513)
          0.3453697 = weight(title_txt:klassifikation in 2513) [ClassicSimilarity], result of:
            0.3453697 = score(doc=2513,freq=1.0), product of:
              0.14579545 = queryWeight, product of:
                1.4876875 = boost
                6.3169727 = idf(docFreq=217, maxDocs=44421)
                0.015513982 = queryNorm
              2.3688648 = fieldWeight in 2513, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3169727 = idf(docFreq=217, maxDocs=44421)
                0.375 = fieldNorm(doc=2513)
          0.02956844 = weight(abstract_txt:werden in 2513) [ClassicSimilarity], result of:
            0.02956844 = score(doc=2513,freq=4.0), product of:
              0.0899132 = queryWeight, product of:
                1.6522145 = boost
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.015513982 = queryNorm
              0.3288554 = fieldWeight in 2513, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.046875 = fieldNorm(doc=2513)
          0.09913722 = weight(abstract_txt:dokument in 2513) [ClassicSimilarity], result of:
            0.09913722 = score(doc=2513,freq=2.0), product of:
              0.20141678 = queryWeight, product of:
                1.7485882 = boost
                7.4248013 = idf(docFreq=71, maxDocs=44421)
                0.015513982 = queryNorm
              0.49219942 = fieldWeight in 2513, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.4248013 = idf(docFreq=71, maxDocs=44421)
                0.046875 = fieldNorm(doc=2513)
          0.1095486 = weight(abstract_txt:wörter in 2513) [ClassicSimilarity], result of:
            0.1095486 = score(doc=2513,freq=2.0), product of:
              0.21528265 = queryWeight, product of:
                1.8077744 = boost
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.015513982 = queryNorm
              0.5088594 = fieldWeight in 2513, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.046875 = fieldNorm(doc=2513)
        0.28 = coord(7/25)
    
  2. Probst, M.; Mittelbach, J.: Maschinelle Indexierung in der Sacherschließung wissenschaftlicher Bibliotheken (2006) 0.18
    0.17664547 = sum of:
      0.17664547 = product of:
        0.73602283 = sum of:
          0.030593973 = weight(abstract_txt:durch in 2755) [ClassicSimilarity], result of:
            0.030593973 = score(doc=2755,freq=1.0), product of:
              0.06587499 = queryWeight, product of:
                4.246169 = idf(docFreq=1728, maxDocs=44421)
                0.015513982 = queryNorm
              0.46442473 = fieldWeight in 2755, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.246169 = idf(docFreq=1728, maxDocs=44421)
                0.109375 = fieldNorm(doc=2755)
          0.07469124 = weight(abstract_txt:beim in 2755) [ClassicSimilarity], result of:
            0.07469124 = score(doc=2755,freq=1.0), product of:
              0.11943815 = queryWeight, product of:
                1.3465152 = boost
                5.717531 = idf(docFreq=396, maxDocs=44421)
                0.015513982 = queryNorm
              0.625355 = fieldWeight in 2755, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.717531 = idf(docFreq=396, maxDocs=44421)
                0.109375 = fieldNorm(doc=2755)
          0.10693134 = weight(abstract_txt:dokumenten in 2755) [ClassicSimilarity], result of:
            0.10693134 = score(doc=2755,freq=1.0), product of:
              0.15171668 = queryWeight, product of:
                1.5175967 = boost
                6.443972 = idf(docFreq=191, maxDocs=44421)
                0.015513982 = queryNorm
              0.7048094 = fieldWeight in 2755, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.443972 = idf(docFreq=191, maxDocs=44421)
                0.109375 = fieldNorm(doc=2755)
          0.034496512 = weight(abstract_txt:werden in 2755) [ClassicSimilarity], result of:
            0.034496512 = score(doc=2755,freq=1.0), product of:
              0.0899132 = queryWeight, product of:
                1.6522145 = boost
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.015513982 = queryNorm
              0.38366464 = fieldWeight in 2755, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.109375 = fieldNorm(doc=2755)
          0.15751249 = weight(abstract_txt:gegensatz in 2755) [ClassicSimilarity], result of:
            0.15751249 = score(doc=2755,freq=1.0), product of:
              0.19641438 = queryWeight, product of:
                1.7267376 = boost
                7.33202 = idf(docFreq=78, maxDocs=44421)
                0.015513982 = queryNorm
              0.80193967 = fieldWeight in 2755, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.33202 = idf(docFreq=78, maxDocs=44421)
                0.109375 = fieldNorm(doc=2755)
          0.33179727 = weight(abstract_txt:gebräuchlichen in 2755) [ClassicSimilarity], result of:
            0.33179727 = score(doc=2755,freq=1.0), product of:
              0.3227591 = queryWeight, product of:
                2.2134972 = boost
                9.398883 = idf(docFreq=9, maxDocs=44421)
                0.015513982 = queryNorm
              1.0280029 = fieldWeight in 2755, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.398883 = idf(docFreq=9, maxDocs=44421)
                0.109375 = fieldNorm(doc=2755)
        0.24 = coord(6/25)
    
  3. Fuhr, N.: Theorie des Information Retrieval I : Modelle (2004) 0.15
    0.14769681 = sum of:
      0.14769681 = product of:
        0.5274886 = sum of:
          0.041588023 = weight(abstract_txt:zwischen in 3912) [ClassicSimilarity], result of:
            0.041588023 = score(doc=3912,freq=2.0), product of:
              0.09317316 = queryWeight, product of:
                1.1892828 = boost
                5.049896 = idf(docFreq=773, maxDocs=44421)
                0.015513982 = queryNorm
              0.44635195 = fieldWeight in 3912, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.049896 = idf(docFreq=773, maxDocs=44421)
                0.0625 = fieldNorm(doc=3912)
          0.05587683 = weight(abstract_txt:dokumente in 3912) [ClassicSimilarity], result of:
            0.05587683 = score(doc=3912,freq=1.0), product of:
              0.1429365 = queryWeight, product of:
                1.473029 = boost
                6.25473 = idf(docFreq=231, maxDocs=44421)
                0.015513982 = queryNorm
              0.39092064 = fieldWeight in 3912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.25473 = idf(docFreq=231, maxDocs=44421)
                0.0625 = fieldNorm(doc=3912)
          0.10583459 = weight(abstract_txt:dokumenten in 3912) [ClassicSimilarity], result of:
            0.10583459 = score(doc=3912,freq=3.0), product of:
              0.15171668 = queryWeight, product of:
                1.5175967 = boost
                6.443972 = idf(docFreq=191, maxDocs=44421)
                0.015513982 = queryNorm
              0.69758046 = fieldWeight in 3912, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.443972 = idf(docFreq=191, maxDocs=44421)
                0.0625 = fieldNorm(doc=3912)
          0.039424587 = weight(abstract_txt:werden in 3912) [ClassicSimilarity], result of:
            0.039424587 = score(doc=3912,freq=4.0), product of:
              0.0899132 = queryWeight, product of:
                1.6522145 = boost
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.015513982 = queryNorm
              0.43847388 = fieldWeight in 3912, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.0625 = fieldNorm(doc=3912)
          0.11168867 = weight(abstract_txt:menge in 3912) [ClassicSimilarity], result of:
            0.11168867 = score(doc=3912,freq=2.0), product of:
              0.18001889 = queryWeight, product of:
                1.6530986 = boost
                7.019336 = idf(docFreq=107, maxDocs=44421)
                0.015513982 = queryNorm
              0.62042755 = fieldWeight in 3912, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.019336 = idf(docFreq=107, maxDocs=44421)
                0.0625 = fieldNorm(doc=3912)
          0.07960844 = weight(abstract_txt:definiert in 3912) [ClassicSimilarity], result of:
            0.07960844 = score(doc=3912,freq=1.0), product of:
              0.18097895 = queryWeight, product of:
                1.6575009 = boost
                7.0380287 = idf(docFreq=105, maxDocs=44421)
                0.015513982 = queryNorm
              0.4398768 = fieldWeight in 3912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0380287 = idf(docFreq=105, maxDocs=44421)
                0.0625 = fieldNorm(doc=3912)
          0.093467474 = weight(abstract_txt:dokument in 3912) [ClassicSimilarity], result of:
            0.093467474 = score(doc=3912,freq=1.0), product of:
              0.20141678 = queryWeight, product of:
                1.7485882 = boost
                7.4248013 = idf(docFreq=71, maxDocs=44421)
                0.015513982 = queryNorm
              0.46405008 = fieldWeight in 3912, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4248013 = idf(docFreq=71, maxDocs=44421)
                0.0625 = fieldNorm(doc=3912)
        0.28 = coord(7/25)
    
  4. Schek, M.: Automatische Klassifizierung und Visualisierung im Archiv der Süddeutschen Zeitung (2005) 0.14
    0.13880225 = sum of:
      0.13880225 = product of:
        0.38556176 = sum of:
          0.02185284 = weight(abstract_txt:durch in 5884) [ClassicSimilarity], result of:
            0.02185284 = score(doc=5884,freq=4.0), product of:
              0.06587499 = queryWeight, product of:
                4.246169 = idf(docFreq=1728, maxDocs=44421)
                0.015513982 = queryNorm
              0.33173198 = fieldWeight in 5884, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.246169 = idf(docFreq=1728, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
          0.018379483 = weight(abstract_txt:zwischen in 5884) [ClassicSimilarity], result of:
            0.018379483 = score(doc=5884,freq=1.0), product of:
              0.09317316 = queryWeight, product of:
                1.1892828 = boost
                5.049896 = idf(docFreq=773, maxDocs=44421)
                0.015513982 = queryNorm
              0.19726156 = fieldWeight in 5884, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.049896 = idf(docFreq=773, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
          0.026294729 = weight(abstract_txt:anhand in 5884) [ClassicSimilarity], result of:
            0.026294729 = score(doc=5884,freq=1.0), product of:
              0.11829901 = queryWeight, product of:
                1.3400786 = boost
                5.6902003 = idf(docFreq=407, maxDocs=44421)
                0.015513982 = queryNorm
              0.22227345 = fieldWeight in 5884, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6902003 = idf(docFreq=407, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
          0.021339184 = weight(abstract_txt:werden in 5884) [ClassicSimilarity], result of:
            0.021339184 = score(doc=5884,freq=3.0), product of:
              0.0899132 = queryWeight, product of:
                1.6522145 = boost
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.015513982 = queryNorm
              0.23733094 = fieldWeight in 5884, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
          0.049755275 = weight(abstract_txt:definiert in 5884) [ClassicSimilarity], result of:
            0.049755275 = score(doc=5884,freq=1.0), product of:
              0.18097895 = queryWeight, product of:
                1.6575009 = boost
                7.0380287 = idf(docFreq=105, maxDocs=44421)
                0.015513982 = queryNorm
              0.274923 = fieldWeight in 5884, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0380287 = idf(docFreq=105, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
          0.056254458 = weight(abstract_txt:gegensatz in 5884) [ClassicSimilarity], result of:
            0.056254458 = score(doc=5884,freq=1.0), product of:
              0.19641438 = queryWeight, product of:
                1.7267376 = boost
                7.33202 = idf(docFreq=78, maxDocs=44421)
                0.015513982 = queryNorm
              0.28640702 = fieldWeight in 5884, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.33202 = idf(docFreq=78, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
          0.05841717 = weight(abstract_txt:dokument in 5884) [ClassicSimilarity], result of:
            0.05841717 = score(doc=5884,freq=1.0), product of:
              0.20141678 = queryWeight, product of:
                1.7485882 = boost
                7.4248013 = idf(docFreq=71, maxDocs=44421)
                0.015513982 = queryNorm
              0.2900313 = fieldWeight in 5884, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4248013 = idf(docFreq=71, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
          0.064552136 = weight(abstract_txt:untereinander in 5884) [ClassicSimilarity], result of:
            0.064552136 = score(doc=5884,freq=1.0), product of:
              0.21528265 = queryWeight, product of:
                1.8077744 = boost
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.015513982 = queryNorm
              0.2998483 = fieldWeight in 5884, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.676116 = idf(docFreq=55, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
          0.06871645 = weight(abstract_txt:clustering in 5884) [ClassicSimilarity], result of:
            0.06871645 = score(doc=5884,freq=1.0), product of:
              0.28278244 = queryWeight, product of:
                2.93009 = boost
                6.2208285 = idf(docFreq=239, maxDocs=44421)
                0.015513982 = queryNorm
              0.24300112 = fieldWeight in 5884, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.2208285 = idf(docFreq=239, maxDocs=44421)
                0.0390625 = fieldNorm(doc=5884)
        0.36 = coord(9/25)
    
  5. Güntner, G.; Sint, R.; Westenthaler, R.: ¬Ein Ansatz zur Unterstützung traditioneller Klassifikation durch Social Tagging (2008) 0.13
    0.13393676 = sum of:
      0.13393676 = product of:
        0.6696838 = sum of:
          0.026223406 = weight(abstract_txt:durch in 3897) [ClassicSimilarity], result of:
            0.026223406 = score(doc=3897,freq=1.0), product of:
              0.06587499 = queryWeight, product of:
                4.246169 = idf(docFreq=1728, maxDocs=44421)
                0.015513982 = queryNorm
              0.39807835 = fieldWeight in 3897, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.246169 = idf(docFreq=1728, maxDocs=44421)
                0.09375 = fieldNorm(doc=3897)
          0.08381524 = weight(abstract_txt:dokumente in 3897) [ClassicSimilarity], result of:
            0.08381524 = score(doc=3897,freq=1.0), product of:
              0.1429365 = queryWeight, product of:
                1.473029 = boost
                6.25473 = idf(docFreq=231, maxDocs=44421)
                0.015513982 = queryNorm
              0.58638096 = fieldWeight in 3897, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.25473 = idf(docFreq=231, maxDocs=44421)
                0.09375 = fieldNorm(doc=3897)
          0.2878081 = weight(title_txt:klassifikation in 3897) [ClassicSimilarity], result of:
            0.2878081 = score(doc=3897,freq=1.0), product of:
              0.14579545 = queryWeight, product of:
                1.4876875 = boost
                6.3169727 = idf(docFreq=217, maxDocs=44421)
                0.015513982 = queryNorm
              1.974054 = fieldWeight in 3897, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3169727 = idf(docFreq=217, maxDocs=44421)
                0.3125 = fieldNorm(doc=3897)
          0.041816086 = weight(abstract_txt:werden in 3897) [ClassicSimilarity], result of:
            0.041816086 = score(doc=3897,freq=2.0), product of:
              0.0899132 = queryWeight, product of:
                1.6522145 = boost
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.015513982 = queryNorm
              0.46507174 = fieldWeight in 3897, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.507791 = idf(docFreq=3617, maxDocs=44421)
                0.09375 = fieldNorm(doc=3897)
          0.23002103 = weight(abstract_txt:klassifiziert in 3897) [ClassicSimilarity], result of:
            0.23002103 = score(doc=3897,freq=1.0), product of:
              0.28018153 = queryWeight, product of:
                2.0623362 = boost
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.015513982 = queryNorm
              0.8209714 = fieldWeight in 3897, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.09375 = fieldNorm(doc=3897)
        0.2 = coord(5/25)