Document (#29723)

Author
Voorbij, H.
Title
Title keywords and subject descriptors : a comparison of subject search entries of books in the humanities and social sciences
Source
Journal of documentation. 54(1998) no.4, S.466-476
Year
1998
Abstract
In order to compare the value of subject descriptors and title keywords as entries to subject searches, two studies were carried out. Both studies concentrated on monographs in the humanities and social sciences, held by the online public access catalogue of the National Library of the Netherlands. In the first study, a comparison was made by subject librarians between the subject descriptors and the title keywords of 475 records. They could express their opinion on a scale from 1 (descriptor is exactly or almost the same as word in title) to 7 (descriptor does not appear in title at all). It was concluded that 37 per cent of the records are considerably enhanced by a subject descriptor, and 49 per cent slightly or considerably enhanced. In the second study, subject librarians performed subject searches using title keywords and subject descriptors on the same topic. The relative recall amounted to 48 per cent and 86 per cent respectively. Failure analysis revealed the reasons why so many records that were found by subject descriptors were not found by title keywords. First, although completely meaningless titles hardly ever appear, the title of a publication does not always offer sufficient clues for title keyword searching. In those cases, descriptors may enhance the record of a publication. A second and even more important task of subject descriptors is controlling the vocabulary. Many relevant titles cannot be retrieved by title keyword searching because of the wide diversity of ways of expressing a topic. Descriptors take away the burden of vocabulary control from the user.
Content
Vgl. auch unter: http://www.emeraldinsight.com/10.1108/EUM0000000007178 .
Theme
Retrievalstudien
Volltextretrieval
Field
Geisteswissenschaften
Sozialwissenschaften

Similar documents (author)

  1. Voorbij, H.: ¬De ontwikkeling van het onderwerpsontsluitingssysteem t.b.v. de Nederlandse Bibliografie (1981) 6.07
    6.0667334 = sum of:
      6.0667334 = weight(author_txt:voorbij in 977) [ClassicSimilarity], result of:
        6.0667334 = fieldWeight in 977, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.706774 = idf(docFreq=6, maxDocs=42306)
          0.625 = fieldNorm(doc=977)
    
  2. Voorbij, H.: ¬Een goede titel behoeft geen trefwoord, of toch wel? : een vergelijkend oderzoek titelwoorden - trefwoorden (1997) 6.07
    6.0667334 = sum of:
      6.0667334 = weight(author_txt:voorbij in 2447) [ClassicSimilarity], result of:
        6.0667334 = fieldWeight in 2447, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.706774 = idf(docFreq=6, maxDocs=42306)
          0.625 = fieldNorm(doc=2447)
    
  3. Voorbij, H.: Wetenschappelijke informatie zoeken op Internet : landelijk gebruikersoderzoek (1998) 6.07
    6.0667334 = sum of:
      6.0667334 = weight(author_txt:voorbij in 3869) [ClassicSimilarity], result of:
        6.0667334 = fieldWeight in 3869, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.706774 = idf(docFreq=6, maxDocs=42306)
          0.625 = fieldNorm(doc=3869)
    
  4. Voorbij, H.: Titelwoorden - trefwoorden : een vergelijkend onderzoek (1997) 6.07
    6.0667334 = sum of:
      6.0667334 = weight(author_txt:voorbij in 4176) [ClassicSimilarity], result of:
        6.0667334 = fieldWeight in 4176, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.706774 = idf(docFreq=6, maxDocs=42306)
          0.625 = fieldNorm(doc=4176)
    
  5. Voorbij, H.: Searching scientific information on the Internet : a Dutch academic user survey (1999) 6.07
    6.0667334 = sum of:
      6.0667334 = weight(author_txt:voorbij in 4547) [ClassicSimilarity], result of:
        6.0667334 = fieldWeight in 4547, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.706774 = idf(docFreq=6, maxDocs=42306)
          0.625 = fieldNorm(doc=4547)
    

Similar documents (content)

  1. McJunkin, M.C.: Precision and recall in title keyword searching (1995) 0.29
    0.28745985 = sum of:
      0.28745985 = product of:
        1.0266423 = sum of:
          0.032162078 = weight(abstract_txt:searches in 3420) [ClassicSimilarity], result of:
            0.032162078 = score(doc=3420,freq=1.0), product of:
              0.07898989 = queryWeight, product of:
                1.1175954 = boost
                5.2117376 = idf(docFreq=626, maxDocs=42306)
                0.013561395 = queryNorm
              0.40716702 = fieldWeight in 3420, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2117376 = idf(docFreq=626, maxDocs=42306)
                0.078125 = fieldNorm(doc=3420)
          0.034575377 = weight(abstract_txt:were in 3420) [ClassicSimilarity], result of:
            0.034575377 = score(doc=3420,freq=4.0), product of:
              0.0597765 = queryWeight, product of:
                1.1907202 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.013561395 = queryNorm
              0.57841086 = fieldWeight in 3420, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.078125 = fieldNorm(doc=3420)
          0.042588204 = weight(abstract_txt:titles in 3420) [ClassicSimilarity], result of:
            0.042588204 = score(doc=3420,freq=1.0), product of:
              0.09525074 = queryWeight, product of:
                1.22725 = boost
                5.723095 = idf(docFreq=375, maxDocs=42306)
                0.013561395 = queryNorm
              0.4471168 = fieldWeight in 3420, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.723095 = idf(docFreq=375, maxDocs=42306)
                0.078125 = fieldNorm(doc=3420)
          0.050141815 = weight(abstract_txt:keyword in 3420) [ClassicSimilarity], result of:
            0.050141815 = score(doc=3420,freq=1.0), product of:
              0.106204316 = queryWeight, product of:
                1.2958953 = boost
                6.0432124 = idf(docFreq=272, maxDocs=42306)
                0.013561395 = queryNorm
              0.47212598 = fieldWeight in 3420, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0432124 = idf(docFreq=272, maxDocs=42306)
                0.078125 = fieldNorm(doc=3420)
          0.28236017 = weight(abstract_txt:keywords in 3420) [ClassicSimilarity], result of:
            0.28236017 = score(doc=3420,freq=5.0), product of:
              0.26680937 = queryWeight, product of:
                3.2476513 = boost
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.013561395 = queryNorm
              1.0582843 = fieldWeight in 3420, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.078125 = fieldNorm(doc=3420)
          0.11518552 = weight(abstract_txt:subject in 3420) [ClassicSimilarity], result of:
            0.11518552 = score(doc=3420,freq=2.0), product of:
              0.26667428 = queryWeight, product of:
                5.029966 = boost
                3.9094145 = idf(docFreq=2305, maxDocs=42306)
                0.013561395 = queryNorm
              0.43193337 = fieldWeight in 3420, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9094145 = idf(docFreq=2305, maxDocs=42306)
                0.078125 = fieldNorm(doc=3420)
          0.4696292 = weight(abstract_txt:title in 3420) [ClassicSimilarity], result of:
            0.4696292 = score(doc=3420,freq=5.0), product of:
              0.47189516 = queryWeight, product of:
                6.1081066 = boost
                5.696847 = idf(docFreq=385, maxDocs=42306)
                0.013561395 = queryNorm
              0.9951982 = fieldWeight in 3420, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.696847 = idf(docFreq=385, maxDocs=42306)
                0.078125 = fieldNorm(doc=3420)
        0.28 = coord(7/25)
    
  2. Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.28
    0.2756159 = sum of:
      0.2756159 = product of:
        0.7655997 = sum of:
          0.03362628 = weight(abstract_txt:sciences in 5070) [ClassicSimilarity], result of:
            0.03362628 = score(doc=5070,freq=1.0), product of:
              0.081369445 = queryWeight, product of:
                1.1343042 = boost
                5.289656 = idf(docFreq=579, maxDocs=42306)
                0.013561395 = queryNorm
              0.41325438 = fieldWeight in 5070, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.289656 = idf(docFreq=579, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
          0.034863185 = weight(abstract_txt:vocabulary in 5070) [ClassicSimilarity], result of:
            0.034863185 = score(doc=5070,freq=1.0), product of:
              0.0833528 = queryWeight, product of:
                1.1480451 = boost
                5.353735 = idf(docFreq=543, maxDocs=42306)
                0.013561395 = queryNorm
              0.41826054 = fieldWeight in 5070, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.353735 = idf(docFreq=543, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
          0.017287688 = weight(abstract_txt:were in 5070) [ClassicSimilarity], result of:
            0.017287688 = score(doc=5070,freq=1.0), product of:
              0.0597765 = queryWeight, product of:
                1.1907202 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.013561395 = queryNorm
              0.28920543 = fieldWeight in 5070, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
          0.073764935 = weight(abstract_txt:titles in 5070) [ClassicSimilarity], result of:
            0.073764935 = score(doc=5070,freq=3.0), product of:
              0.09525074 = queryWeight, product of:
                1.22725 = boost
                5.723095 = idf(docFreq=375, maxDocs=42306)
                0.013561395 = queryNorm
              0.77442896 = fieldWeight in 5070, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.723095 = idf(docFreq=375, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
          0.050141815 = weight(abstract_txt:keyword in 5070) [ClassicSimilarity], result of:
            0.050141815 = score(doc=5070,freq=1.0), product of:
              0.106204316 = queryWeight, product of:
                1.2958953 = boost
                6.0432124 = idf(docFreq=272, maxDocs=42306)
                0.013561395 = queryNorm
              0.47212598 = fieldWeight in 5070, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0432124 = idf(docFreq=272, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
          0.051172517 = weight(abstract_txt:humanities in 5070) [ClassicSimilarity], result of:
            0.051172517 = score(doc=5070,freq=1.0), product of:
              0.10765478 = queryWeight, product of:
                1.3047146 = boost
                6.0843396 = idf(docFreq=261, maxDocs=42306)
                0.013561395 = queryNorm
              0.47533903 = fieldWeight in 5070, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0843396 = idf(docFreq=261, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
          0.1262753 = weight(abstract_txt:keywords in 5070) [ClassicSimilarity], result of:
            0.1262753 = score(doc=5070,freq=1.0), product of:
              0.26680937 = queryWeight, product of:
                3.2476513 = boost
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.013561395 = queryNorm
              0.47327912 = fieldWeight in 5070, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
          0.081448466 = weight(abstract_txt:subject in 5070) [ClassicSimilarity], result of:
            0.081448466 = score(doc=5070,freq=1.0), product of:
              0.26667428 = queryWeight, product of:
                5.029966 = boost
                3.9094145 = idf(docFreq=2305, maxDocs=42306)
                0.013561395 = queryNorm
              0.30542302 = fieldWeight in 5070, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9094145 = idf(docFreq=2305, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
          0.29701957 = weight(abstract_txt:title in 5070) [ClassicSimilarity], result of:
            0.29701957 = score(doc=5070,freq=2.0), product of:
              0.47189516 = queryWeight, product of:
                6.1081066 = boost
                5.696847 = idf(docFreq=385, maxDocs=42306)
                0.013561395 = queryNorm
              0.62941855 = fieldWeight in 5070, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.696847 = idf(docFreq=385, maxDocs=42306)
                0.078125 = fieldNorm(doc=5070)
        0.36 = coord(9/25)
    
  3. Davis, M.A.: Title keyword selection and use for optimum document retrieval : guidelines for authors (1996) 0.27
    0.27344763 = sum of:
      0.27344763 = product of:
        0.8545239 = sum of:
          0.027648496 = weight(abstract_txt:librarians in 987) [ClassicSimilarity], result of:
            0.027648496 = score(doc=987,freq=1.0), product of:
              0.06324152 = queryWeight, product of:
                4.663349 = idf(docFreq=1084, maxDocs=42306)
                0.013561395 = queryNorm
              0.43718898 = fieldWeight in 987, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.663349 = idf(docFreq=1084, maxDocs=42306)
                0.09375 = fieldNorm(doc=987)
          0.03626005 = weight(abstract_txt:topic in 987) [ClassicSimilarity], result of:
            0.03626005 = score(doc=987,freq=1.0), product of:
              0.075771675 = queryWeight, product of:
                1.0945921 = boost
                5.104465 = idf(docFreq=697, maxDocs=42306)
                0.013561395 = queryNorm
              0.47854358 = fieldWeight in 987, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.104465 = idf(docFreq=697, maxDocs=42306)
                0.09375 = fieldNorm(doc=987)
          0.054580856 = weight(abstract_txt:searches in 987) [ClassicSimilarity], result of:
            0.054580856 = score(doc=987,freq=2.0), product of:
              0.07898989 = queryWeight, product of:
                1.1175954 = boost
                5.2117376 = idf(docFreq=626, maxDocs=42306)
                0.013561395 = queryNorm
              0.6909853 = fieldWeight in 987, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.2117376 = idf(docFreq=626, maxDocs=42306)
                0.09375 = fieldNorm(doc=987)
          0.05916479 = weight(abstract_txt:vocabulary in 987) [ClassicSimilarity], result of:
            0.05916479 = score(doc=987,freq=2.0), product of:
              0.0833528 = queryWeight, product of:
                1.1480451 = boost
                5.353735 = idf(docFreq=543, maxDocs=42306)
                0.013561395 = queryNorm
              0.7098117 = fieldWeight in 987, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.353735 = idf(docFreq=543, maxDocs=42306)
                0.09375 = fieldNorm(doc=987)
          0.10221169 = weight(abstract_txt:titles in 987) [ClassicSimilarity], result of:
            0.10221169 = score(doc=987,freq=4.0), product of:
              0.09525074 = queryWeight, product of:
                1.22725 = boost
                5.723095 = idf(docFreq=375, maxDocs=42306)
                0.013561395 = queryNorm
              1.0730803 = fieldWeight in 987, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.723095 = idf(docFreq=375, maxDocs=42306)
                0.09375 = fieldNorm(doc=987)
          0.060170177 = weight(abstract_txt:keyword in 987) [ClassicSimilarity], result of:
            0.060170177 = score(doc=987,freq=1.0), product of:
              0.106204316 = queryWeight, product of:
                1.2958953 = boost
                6.0432124 = idf(docFreq=272, maxDocs=42306)
                0.013561395 = queryNorm
              0.56655115 = fieldWeight in 987, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0432124 = idf(docFreq=272, maxDocs=42306)
                0.09375 = fieldNorm(doc=987)
          0.2624583 = weight(abstract_txt:keywords in 987) [ClassicSimilarity], result of:
            0.2624583 = score(doc=987,freq=3.0), product of:
              0.26680937 = queryWeight, product of:
                3.2476513 = boost
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.013561395 = queryNorm
              0.98369217 = fieldWeight in 987, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.09375 = fieldNorm(doc=987)
          0.2520295 = weight(abstract_txt:title in 987) [ClassicSimilarity], result of:
            0.2520295 = score(doc=987,freq=1.0), product of:
              0.47189516 = queryWeight, product of:
                6.1081066 = boost
                5.696847 = idf(docFreq=385, maxDocs=42306)
                0.013561395 = queryNorm
              0.53407943 = fieldWeight in 987, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.696847 = idf(docFreq=385, maxDocs=42306)
                0.09375 = fieldNorm(doc=987)
        0.32 = coord(8/25)
    
  4. Maurer, M.B.; Shakeri, S.: Disciplinary differences : LCSH and keyword assignment for ETDs from different disciplines (2016) 0.25
    0.25061435 = sum of:
      0.25061435 = product of:
        0.78316987 = sum of:
          0.027648496 = weight(abstract_txt:librarians in 2040) [ClassicSimilarity], result of:
            0.027648496 = score(doc=2040,freq=1.0), product of:
              0.06324152 = queryWeight, product of:
                4.663349 = idf(docFreq=1084, maxDocs=42306)
                0.013561395 = queryNorm
              0.43718898 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.663349 = idf(docFreq=1084, maxDocs=42306)
                0.09375 = fieldNorm(doc=2040)
          0.040351536 = weight(abstract_txt:sciences in 2040) [ClassicSimilarity], result of:
            0.040351536 = score(doc=2040,freq=1.0), product of:
              0.081369445 = queryWeight, product of:
                1.1343042 = boost
                5.289656 = idf(docFreq=579, maxDocs=42306)
                0.013561395 = queryNorm
              0.49590528 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.289656 = idf(docFreq=579, maxDocs=42306)
                0.09375 = fieldNorm(doc=2040)
          0.020745225 = weight(abstract_txt:were in 2040) [ClassicSimilarity], result of:
            0.020745225 = score(doc=2040,freq=1.0), product of:
              0.0597765 = queryWeight, product of:
                1.1907202 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.013561395 = queryNorm
              0.3470465 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.09375 = fieldNorm(doc=2040)
          0.060170177 = weight(abstract_txt:keyword in 2040) [ClassicSimilarity], result of:
            0.060170177 = score(doc=2040,freq=1.0), product of:
              0.106204316 = queryWeight, product of:
                1.2958953 = boost
                6.0432124 = idf(docFreq=272, maxDocs=42306)
                0.013561395 = queryNorm
              0.56655115 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0432124 = idf(docFreq=272, maxDocs=42306)
                0.09375 = fieldNorm(doc=2040)
          0.061407026 = weight(abstract_txt:humanities in 2040) [ClassicSimilarity], result of:
            0.061407026 = score(doc=2040,freq=1.0), product of:
              0.10765478 = queryWeight, product of:
                1.3047146 = boost
                6.0843396 = idf(docFreq=261, maxDocs=42306)
                0.013561395 = queryNorm
              0.57040685 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0843396 = idf(docFreq=261, maxDocs=42306)
                0.09375 = fieldNorm(doc=2040)
          0.15153039 = weight(abstract_txt:keywords in 2040) [ClassicSimilarity], result of:
            0.15153039 = score(doc=2040,freq=1.0), product of:
              0.26680937 = queryWeight, product of:
                3.2476513 = boost
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.013561395 = queryNorm
              0.567935 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.09375 = fieldNorm(doc=2040)
          0.16928744 = weight(abstract_txt:subject in 2040) [ClassicSimilarity], result of:
            0.16928744 = score(doc=2040,freq=3.0), product of:
              0.26667428 = queryWeight, product of:
                5.029966 = boost
                3.9094145 = idf(docFreq=2305, maxDocs=42306)
                0.013561395 = queryNorm
              0.6348098 = fieldWeight in 2040, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9094145 = idf(docFreq=2305, maxDocs=42306)
                0.09375 = fieldNorm(doc=2040)
          0.2520295 = weight(abstract_txt:title in 2040) [ClassicSimilarity], result of:
            0.2520295 = score(doc=2040,freq=1.0), product of:
              0.47189516 = queryWeight, product of:
                6.1081066 = boost
                5.696847 = idf(docFreq=385, maxDocs=42306)
                0.013561395 = queryNorm
              0.53407943 = fieldWeight in 2040, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.696847 = idf(docFreq=385, maxDocs=42306)
                0.09375 = fieldNorm(doc=2040)
        0.32 = coord(8/25)
    
  5. Gil-Leiva, I.; Alonso-Arroyo, A.: Keywords given by authors of scientific articles in database descriptors (2007) 0.25
    0.24689344 = sum of:
      0.24689344 = product of:
        1.0287226 = sum of:
          0.019716464 = weight(abstract_txt:same in 2212) [ClassicSimilarity], result of:
            0.019716464 = score(doc=2212,freq=1.0), product of:
              0.06614568 = queryWeight, product of:
                1.0227032 = boost
                4.769222 = idf(docFreq=975, maxDocs=42306)
                0.013561395 = queryNorm
              0.29807636 = fieldWeight in 2212, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.769222 = idf(docFreq=975, maxDocs=42306)
                0.0625 = fieldNorm(doc=2212)
          0.0138301505 = weight(abstract_txt:were in 2212) [ClassicSimilarity], result of:
            0.0138301505 = score(doc=2212,freq=1.0), product of:
              0.0597765 = queryWeight, product of:
                1.1907202 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.013561395 = queryNorm
              0.23136434 = fieldWeight in 2212, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.0625 = fieldNorm(doc=2212)
          0.058224473 = weight(abstract_txt:appear in 2212) [ClassicSimilarity], result of:
            0.058224473 = score(doc=2212,freq=2.0), product of:
              0.108062714 = queryWeight, product of:
                1.3071842 = boost
                6.095856 = idf(docFreq=258, maxDocs=42306)
                0.013561395 = queryNorm
              0.5388026 = fieldWeight in 2212, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.095856 = idf(docFreq=258, maxDocs=42306)
                0.0625 = fieldNorm(doc=2212)
          0.033292398 = weight(abstract_txt:records in 2212) [ClassicSimilarity], result of:
            0.033292398 = score(doc=2212,freq=2.0), product of:
              0.08521825 = queryWeight, product of:
                1.4217093 = boost
                4.419951 = idf(docFreq=1383, maxDocs=42306)
                0.013561395 = queryNorm
              0.39067215 = fieldWeight in 2212, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.419951 = idf(docFreq=1383, maxDocs=42306)
                0.0625 = fieldNorm(doc=2212)
          0.22588815 = weight(abstract_txt:keywords in 2212) [ClassicSimilarity], result of:
            0.22588815 = score(doc=2212,freq=5.0), product of:
              0.26680937 = queryWeight, product of:
                3.2476513 = boost
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.013561395 = queryNorm
              0.8466275 = fieldWeight in 2212, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.0625 = fieldNorm(doc=2212)
          0.67777103 = weight(abstract_txt:descriptors in 2212) [ClassicSimilarity], result of:
            0.67777103 = score(doc=2212,freq=10.0), product of:
              0.5152573 = queryWeight, product of:
                5.7087483 = boost
                6.655472 = idf(docFreq=147, maxDocs=42306)
                0.013561395 = queryNorm
              1.3154031 = fieldWeight in 2212, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                6.655472 = idf(docFreq=147, maxDocs=42306)
                0.0625 = fieldNorm(doc=2212)
        0.24 = coord(6/25)