Document (#1155)

Author: Markham, J.W.
Title: LCC, DDC, and algae
Source: Library resources and technical services. 34(1989), S.54-61
Year: 1989
Abstract: Algae comprise a much more diverse group of organisms than do the flowering plants, but this is ignored by LCC. Using the family as the basic unit of classification for algae, LCC puts all families together alphabetically, as for flowering plants. However, all flowering plant families are in the same botanical division, whereas algal families fall into many fundamentally different divisions. Alphabetical arrangement of families, mixed with higher taxa, results in very particular groupings of unlike subjects.DDC uses divisions rather than families for algal literature and follows a hierarchical arragement that corresponds to botanical classification. DDC's hierarchy is superior to LCC's alphabetical arrange ment of habitats, but for the applied science aspects, LCC allows for better specifity than DDC
Object: DDC
LCC

Similar documents (content)

Smiraglia, R.P.; Leazer, G.H.: Derivative bibliographic relationships : the work relationship in a global bibliographic database (1999) 0.09

0.08709401 = sum of:
  0.08709401 = product of:
    0.7257834 = sum of:
      0.055597685 = weight(abstract_txt:family in 3663) [ClassicSimilarity], result of:
        0.055597685 = score(doc=3663,freq=2.0), product of:
          0.09157884 = queryWeight, product of:
            1.012432 = boost
            6.8685737 = idf(docFreq=124, maxDocs=44218)
            0.013169301 = queryNorm
          0.60710186 = fieldWeight in 3663, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            6.8685737 = idf(docFreq=124, maxDocs=44218)
            0.0625 = fieldNorm(doc=3663)
      0.021508727 = weight(abstract_txt:than in 3663) [ClassicSimilarity], result of:
        0.021508727 = score(doc=3663,freq=1.0), product of:
          0.08835224 = queryWeight, product of:
            1.7224146 = boost
            3.8950868 = idf(docFreq=2444, maxDocs=44218)
            0.013169301 = queryNorm
          0.24344292 = fieldWeight in 3663, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.8950868 = idf(docFreq=2444, maxDocs=44218)
            0.0625 = fieldNorm(doc=3663)
      0.648677 = weight(abstract_txt:families in 3663) [ClassicSimilarity], result of:
        0.648677 = score(doc=3663,freq=6.0), product of:
          0.55854636 = queryWeight, product of:
            5.590915 = boost
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.013169301 = queryNorm
          1.1613665 = fieldWeight in 3663, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.0625 = fieldNorm(doc=3663)
    0.12 = coord(3/25)

Hider, P.: Familial authorship in the Anglo-American cataloging tradition (2007) 0.08

0.08038206 = sum of:
  0.08038206 = product of:
    0.66985047 = sum of:
      0.047353726 = weight(abstract_txt:division in 785) [ClassicSimilarity], result of:
        0.047353726 = score(doc=785,freq=1.0), product of:
          0.08934359 = queryWeight, product of:
            6.784232 = idf(docFreq=135, maxDocs=44218)
            0.013169301 = queryNorm
          0.53001815 = fieldWeight in 785, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.784232 = idf(docFreq=135, maxDocs=44218)
            0.078125 = fieldNorm(doc=785)
      0.049141876 = weight(abstract_txt:family in 785) [ClassicSimilarity], result of:
        0.049141876 = score(doc=785,freq=1.0), product of:
          0.09157884 = queryWeight, product of:
            1.012432 = boost
            6.8685737 = idf(docFreq=124, maxDocs=44218)
            0.013169301 = queryNorm
          0.5366073 = fieldWeight in 785, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.8685737 = idf(docFreq=124, maxDocs=44218)
            0.078125 = fieldNorm(doc=785)
      0.57335484 = weight(abstract_txt:families in 785) [ClassicSimilarity], result of:
        0.57335484 = score(doc=785,freq=3.0), product of:
          0.55854636 = queryWeight, product of:
            5.590915 = boost
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.013169301 = queryNorm
          1.0265125 = fieldWeight in 785, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.078125 = fieldNorm(doc=785)
    0.12 = coord(3/25)

Campe, P.: Case, semantic roles, and grammatical relations : a comprehensive bibliography (1994) 0.07

0.06871919 = sum of:
  0.06871919 = product of:
    0.85898995 = sum of:
      0.064526185 = weight(abstract_txt:than in 8663) [ClassicSimilarity], result of:
        0.064526185 = score(doc=8663,freq=1.0), product of:
          0.08835224 = queryWeight, product of:
            1.7224146 = boost
            3.8950868 = idf(docFreq=2444, maxDocs=44218)
            0.013169301 = queryNorm
          0.7303288 = fieldWeight in 8663, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.8950868 = idf(docFreq=2444, maxDocs=44218)
            0.1875 = fieldNorm(doc=8663)
      0.79446375 = weight(abstract_txt:families in 8663) [ClassicSimilarity], result of:
        0.79446375 = score(doc=8663,freq=1.0), product of:
          0.55854636 = queryWeight, product of:
            5.590915 = boost
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.013169301 = queryNorm
          1.4223775 = fieldWeight in 8663, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.1875 = fieldNorm(doc=8663)
    0.08 = coord(2/25)

Brown, L.K.; Veinot, T.C.: Information behavior and social control : toward an understanding of conflictual information behavior in families managing chronic illness (2021) 0.06

0.06014757 = sum of:
  0.06014757 = product of:
    0.50122976 = sum of:
      0.09629802 = weight(abstract_txt:family in 65) [ClassicSimilarity], result of:
        0.09629802 = score(doc=65,freq=6.0), product of:
          0.09157884 = queryWeight, product of:
            1.012432 = boost
            6.8685737 = idf(docFreq=124, maxDocs=44218)
            0.013169301 = queryNorm
          1.0515313 = fieldWeight in 65, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            6.8685737 = idf(docFreq=124, maxDocs=44218)
            0.0625 = fieldNorm(doc=65)
      0.030417934 = weight(abstract_txt:than in 65) [ClassicSimilarity], result of:
        0.030417934 = score(doc=65,freq=2.0), product of:
          0.08835224 = queryWeight, product of:
            1.7224146 = boost
            3.8950868 = idf(docFreq=2444, maxDocs=44218)
            0.013169301 = queryNorm
          0.34428027 = fieldWeight in 65, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.8950868 = idf(docFreq=2444, maxDocs=44218)
            0.0625 = fieldNorm(doc=65)
      0.3745138 = weight(abstract_txt:families in 65) [ClassicSimilarity], result of:
        0.3745138 = score(doc=65,freq=2.0), product of:
          0.55854636 = queryWeight, product of:
            5.590915 = boost
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.013169301 = queryNorm
          0.6705152 = fieldWeight in 65, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.0625 = fieldNorm(doc=65)
    0.12 = coord(3/25)

Salaba, A.; Mercun, T.; Aalberg, T.: Complexity of work families and entity-based visualization displays (2018) 0.06

0.058615826 = sum of:
  0.058615826 = product of:
    0.48846522 = sum of:
      0.05897025 = weight(abstract_txt:family in 5184) [ClassicSimilarity], result of:
        0.05897025 = score(doc=5184,freq=1.0), product of:
          0.09157884 = queryWeight, product of:
            1.012432 = boost
            6.8685737 = idf(docFreq=124, maxDocs=44218)
            0.013169301 = queryNorm
          0.64392877 = fieldWeight in 5184, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.8685737 = idf(docFreq=124, maxDocs=44218)
            0.09375 = fieldNorm(doc=5184)
      0.032263093 = weight(abstract_txt:than in 5184) [ClassicSimilarity], result of:
        0.032263093 = score(doc=5184,freq=1.0), product of:
          0.08835224 = queryWeight, product of:
            1.7224146 = boost
            3.8950868 = idf(docFreq=2444, maxDocs=44218)
            0.013169301 = queryNorm
          0.3651644 = fieldWeight in 5184, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.8950868 = idf(docFreq=2444, maxDocs=44218)
            0.09375 = fieldNorm(doc=5184)
      0.39723188 = weight(abstract_txt:families in 5184) [ClassicSimilarity], result of:
        0.39723188 = score(doc=5184,freq=1.0), product of:
          0.55854636 = queryWeight, product of:
            5.590915 = boost
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.013169301 = queryNorm
          0.71118873 = fieldWeight in 5184, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.5860133 = idf(docFreq=60, maxDocs=44218)
            0.09375 = fieldNorm(doc=5184)
    0.12 = coord(3/25)