Document (#37582)

Author
Denton, W.
Title
On dentographs, a new method of visualizing library collections
Source
http://journal.code4lib.org/articles/6300
Year
2012
Abstract
A dentograph is a visualization of a library's collection built on the idea that a classification scheme is a mathematical function mapping one set of things (books or the universe of knowledge) onto another (a set of numbers and letters). Dentographs can visualize aspects of just one collection or can be used to compare two or more collections. This article describes how to build them, with examples and code using Ruby and R, and discusses some problems and future directions.
Theme
Visualisierung

Similar documents (content)

  1. Belew, R.K.: Finding out about : a cognitive perspective on search engine technology and the WWW (2001) 0.09
    0.09397893 = sum of:
      0.09397893 = product of:
        0.33563903 = sum of:
          0.04218383 = weight(abstract_txt:idea in 347) [ClassicSimilarity], result of:
            0.04218383 = score(doc=347,freq=1.0), product of:
              0.15341876 = queryWeight, product of:
                1.1223818 = boost
                5.865787 = idf(docFreq=325, maxDocs=42306)
                0.023302985 = queryNorm
              0.27495876 = fieldWeight in 347, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.865787 = idf(docFreq=325, maxDocs=42306)
                0.046875 = fieldNorm(doc=347)
          0.04218383 = weight(abstract_txt:numbers in 347) [ClassicSimilarity], result of:
            0.04218383 = score(doc=347,freq=1.0), product of:
              0.15341876 = queryWeight, product of:
                1.1223818 = boost
                5.865787 = idf(docFreq=325, maxDocs=42306)
                0.023302985 = queryNorm
              0.27495876 = fieldWeight in 347, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.865787 = idf(docFreq=325, maxDocs=42306)
                0.046875 = fieldNorm(doc=347)
          0.043278914 = weight(abstract_txt:build in 347) [ClassicSimilarity], result of:
            0.043278914 = score(doc=347,freq=1.0), product of:
              0.15606254 = queryWeight, product of:
                1.1320112 = boost
                5.916112 = idf(docFreq=309, maxDocs=42306)
                0.023302985 = queryNorm
              0.27731776 = fieldWeight in 347, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.916112 = idf(docFreq=309, maxDocs=42306)
                0.046875 = fieldNorm(doc=347)
          0.044681884 = weight(abstract_txt:just in 347) [ClassicSimilarity], result of:
            0.044681884 = score(doc=347,freq=1.0), product of:
              0.15941729 = queryWeight, product of:
                1.1441134 = boost
                5.979361 = idf(docFreq=290, maxDocs=42306)
                0.023302985 = queryNorm
              0.28028256 = fieldWeight in 347, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.979361 = idf(docFreq=290, maxDocs=42306)
                0.046875 = fieldNorm(doc=347)
          0.048458662 = weight(abstract_txt:code in 347) [ClassicSimilarity], result of:
            0.048458662 = score(doc=347,freq=1.0), product of:
              0.16827853 = queryWeight, product of:
                1.1754813 = boost
                6.143296 = idf(docFreq=246, maxDocs=42306)
                0.023302985 = queryNorm
              0.287967 = fieldWeight in 347, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.143296 = idf(docFreq=246, maxDocs=42306)
                0.046875 = fieldNorm(doc=347)
          0.05325099 = weight(abstract_txt:mathematical in 347) [ClassicSimilarity], result of:
            0.05325099 = score(doc=347,freq=1.0), product of:
              0.17919789 = queryWeight, product of:
                1.2130196 = boost
                6.339478 = idf(docFreq=202, maxDocs=42306)
                0.023302985 = queryNorm
              0.29716304 = fieldWeight in 347, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.339478 = idf(docFreq=202, maxDocs=42306)
                0.046875 = fieldNorm(doc=347)
          0.061600905 = weight(abstract_txt:collections in 347) [ClassicSimilarity], result of:
            0.061600905 = score(doc=347,freq=2.0), product of:
              0.19747214 = queryWeight, product of:
                1.8008158 = boost
                4.705708 = idf(docFreq=1039, maxDocs=42306)
                0.023302985 = queryNorm
              0.31194732 = fieldWeight in 347, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.705708 = idf(docFreq=1039, maxDocs=42306)
                0.046875 = fieldNorm(doc=347)
        0.28 = coord(7/25)
    
  2. Jörgensen, C.: Unlocking the museum : a manifesto (2004) 0.09
    0.08958426 = sum of:
      0.08958426 = product of:
        0.4479213 = sum of:
          0.06890795 = weight(abstract_txt:another in 2712) [ClassicSimilarity], result of:
            0.06890795 = score(doc=2712,freq=1.0), product of:
              0.13405222 = queryWeight, product of:
                1.0491519 = boost
                5.483073 = idf(docFreq=477, maxDocs=42306)
                0.023302985 = queryNorm
              0.5140381 = fieldWeight in 2712, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.483073 = idf(docFreq=477, maxDocs=42306)
                0.09375 = fieldNorm(doc=2712)
          0.08436766 = weight(abstract_txt:numbers in 2712) [ClassicSimilarity], result of:
            0.08436766 = score(doc=2712,freq=1.0), product of:
              0.15341876 = queryWeight, product of:
                1.1223818 = boost
                5.865787 = idf(docFreq=325, maxDocs=42306)
                0.023302985 = queryNorm
              0.5499175 = fieldWeight in 2712, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.865787 = idf(docFreq=325, maxDocs=42306)
                0.09375 = fieldNorm(doc=2712)
          0.08655783 = weight(abstract_txt:build in 2712) [ClassicSimilarity], result of:
            0.08655783 = score(doc=2712,freq=1.0), product of:
              0.15606254 = queryWeight, product of:
                1.1320112 = boost
                5.916112 = idf(docFreq=309, maxDocs=42306)
                0.023302985 = queryNorm
              0.5546355 = fieldWeight in 2712, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.916112 = idf(docFreq=309, maxDocs=42306)
                0.09375 = fieldNorm(doc=2712)
          0.084886044 = weight(abstract_txt:collection in 2712) [ClassicSimilarity], result of:
            0.084886044 = score(doc=2712,freq=1.0), product of:
              0.19408649 = queryWeight, product of:
                1.7853116 = boost
                4.665194 = idf(docFreq=1082, maxDocs=42306)
                0.023302985 = queryNorm
              0.43736196 = fieldWeight in 2712, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.665194 = idf(docFreq=1082, maxDocs=42306)
                0.09375 = fieldNorm(doc=2712)
          0.12320181 = weight(abstract_txt:collections in 2712) [ClassicSimilarity], result of:
            0.12320181 = score(doc=2712,freq=2.0), product of:
              0.19747214 = queryWeight, product of:
                1.8008158 = boost
                4.705708 = idf(docFreq=1039, maxDocs=42306)
                0.023302985 = queryNorm
              0.62389463 = fieldWeight in 2712, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.705708 = idf(docFreq=1039, maxDocs=42306)
                0.09375 = fieldNorm(doc=2712)
        0.2 = coord(5/25)
    
  3. Zhu, B.; Chen, H.: Information visualization (2004) 0.08
    0.08213204 = sum of:
      0.08213204 = product of:
        0.4106602 = sum of:
          0.17848937 = weight(abstract_txt:visualization in 277) [ClassicSimilarity], result of:
            0.17848937 = score(doc=277,freq=18.0), product of:
              0.17293625 = queryWeight, product of:
                1.1916381 = boost
                6.227734 = idf(docFreq=226, maxDocs=42306)
                0.023302985 = queryNorm
              1.0321108 = fieldWeight in 277, product of:
                4.2426405 = tf(freq=18.0), with freq of:
                  18.0 = termFreq=18.0
                6.227734 = idf(docFreq=226, maxDocs=42306)
                0.0390625 = fieldNorm(doc=277)
          0.043569077 = weight(abstract_txt:directions in 277) [ClassicSimilarity], result of:
            0.043569077 = score(doc=277,freq=1.0), product of:
              0.17701939 = queryWeight, product of:
                1.2056237 = boost
                6.300826 = idf(docFreq=210, maxDocs=42306)
                0.023302985 = queryNorm
              0.24612603 = fieldWeight in 277, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.300826 = idf(docFreq=210, maxDocs=42306)
                0.0390625 = fieldNorm(doc=277)
          0.07571102 = weight(abstract_txt:visualize in 277) [ClassicSimilarity], result of:
            0.07571102 = score(doc=277,freq=1.0), product of:
              0.2558633 = queryWeight, product of:
                1.4494572 = boost
                7.5751467 = idf(docFreq=58, maxDocs=42306)
                0.023302985 = queryNorm
              0.29590416 = fieldWeight in 277, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5751467 = idf(docFreq=58, maxDocs=42306)
                0.0390625 = fieldNorm(doc=277)
          0.05001958 = weight(abstract_txt:collection in 277) [ClassicSimilarity], result of:
            0.05001958 = score(doc=277,freq=2.0), product of:
              0.19408649 = queryWeight, product of:
                1.7853116 = boost
                4.665194 = idf(docFreq=1082, maxDocs=42306)
                0.023302985 = queryNorm
              0.257718 = fieldWeight in 277, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.665194 = idf(docFreq=1082, maxDocs=42306)
                0.0390625 = fieldNorm(doc=277)
          0.06287116 = weight(abstract_txt:collections in 277) [ClassicSimilarity], result of:
            0.06287116 = score(doc=277,freq=3.0), product of:
              0.19747214 = queryWeight, product of:
                1.8008158 = boost
                4.705708 = idf(docFreq=1039, maxDocs=42306)
                0.023302985 = queryNorm
              0.31837988 = fieldWeight in 277, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.705708 = idf(docFreq=1039, maxDocs=42306)
                0.0390625 = fieldNorm(doc=277)
        0.2 = coord(5/25)
    
  4. Daranyi, S.; Zawiasa, R.; Hajnal, Z.: Conceptual mapping of a database in the humanities : first results of an experiment with Sophia (1996) 0.08
    0.08098131 = sum of:
      0.08098131 = product of:
        0.5061332 = sum of:
          0.11369231 = weight(abstract_txt:another in 4566) [ClassicSimilarity], result of:
            0.11369231 = score(doc=4566,freq=2.0), product of:
              0.13405222 = queryWeight, product of:
                1.0491519 = boost
                5.483073 = idf(docFreq=477, maxDocs=42306)
                0.023302985 = queryNorm
              0.8481196 = fieldWeight in 4566, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.483073 = idf(docFreq=477, maxDocs=42306)
                0.109375 = fieldNorm(doc=4566)
          0.09489609 = weight(abstract_txt:mapping in 4566) [ClassicSimilarity], result of:
            0.09489609 = score(doc=4566,freq=1.0), product of:
              0.14972539 = queryWeight, product of:
                1.1087896 = boost
                5.794751 = idf(docFreq=349, maxDocs=42306)
                0.023302985 = queryNorm
              0.6338009 = fieldWeight in 4566, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.794751 = idf(docFreq=349, maxDocs=42306)
                0.109375 = fieldNorm(doc=4566)
          0.09842894 = weight(abstract_txt:idea in 4566) [ClassicSimilarity], result of:
            0.09842894 = score(doc=4566,freq=1.0), product of:
              0.15341876 = queryWeight, product of:
                1.1223818 = boost
                5.865787 = idf(docFreq=325, maxDocs=42306)
                0.023302985 = queryNorm
              0.64157045 = fieldWeight in 4566, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.865787 = idf(docFreq=325, maxDocs=42306)
                0.109375 = fieldNorm(doc=4566)
          0.19911587 = weight(abstract_txt:onto in 4566) [ClassicSimilarity], result of:
            0.19911587 = score(doc=4566,freq=1.0), product of:
              0.24539582 = queryWeight, product of:
                1.4194986 = boost
                7.4185777 = idf(docFreq=68, maxDocs=42306)
                0.023302985 = queryNorm
              0.8114069 = fieldWeight in 4566, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4185777 = idf(docFreq=68, maxDocs=42306)
                0.109375 = fieldNorm(doc=4566)
        0.16 = coord(4/25)
    
  5. Cohen, D.J.: From Babel to knowledge : data mining large digital collections (2006) 0.07
    0.07307165 = sum of:
      0.07307165 = product of:
        0.36535823 = sum of:
          0.051675513 = weight(abstract_txt:books in 3179) [ClassicSimilarity], result of:
            0.051675513 = score(doc=3179,freq=3.0), product of:
              0.12178596 = queryWeight, product of:
                5.226196 = idf(docFreq=617, maxDocs=42306)
                0.023302985 = queryNorm
              0.4243142 = fieldWeight in 3179, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.226196 = idf(docFreq=617, maxDocs=42306)
                0.046875 = fieldNorm(doc=3179)
          0.08048404 = weight(abstract_txt:library's in 3179) [ClassicSimilarity], result of:
            0.08048404 = score(doc=3179,freq=3.0), product of:
              0.16363664 = queryWeight, product of:
                1.1591554 = boost
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.023302985 = queryNorm
              0.49184608 = fieldWeight in 3179, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.057973 = idf(docFreq=268, maxDocs=42306)
                0.046875 = fieldNorm(doc=3179)
          0.10363879 = weight(abstract_txt:letters in 3179) [ClassicSimilarity], result of:
            0.10363879 = score(doc=3179,freq=1.0), product of:
              0.27933756 = queryWeight, product of:
                1.5144887 = boost
                7.9150147 = idf(docFreq=41, maxDocs=42306)
                0.023302985 = queryNorm
              0.37101632 = fieldWeight in 3179, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.9150147 = idf(docFreq=41, maxDocs=42306)
                0.046875 = fieldNorm(doc=3179)
          0.042443022 = weight(abstract_txt:collection in 3179) [ClassicSimilarity], result of:
            0.042443022 = score(doc=3179,freq=1.0), product of:
              0.19408649 = queryWeight, product of:
                1.7853116 = boost
                4.665194 = idf(docFreq=1082, maxDocs=42306)
                0.023302985 = queryNorm
              0.21868098 = fieldWeight in 3179, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.665194 = idf(docFreq=1082, maxDocs=42306)
                0.046875 = fieldNorm(doc=3179)
          0.08711684 = weight(abstract_txt:collections in 3179) [ClassicSimilarity], result of:
            0.08711684 = score(doc=3179,freq=4.0), product of:
              0.19747214 = queryWeight, product of:
                1.8008158 = boost
                4.705708 = idf(docFreq=1039, maxDocs=42306)
                0.023302985 = queryNorm
              0.44116014 = fieldWeight in 3179, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.705708 = idf(docFreq=1039, maxDocs=42306)
                0.046875 = fieldNorm(doc=3179)
        0.2 = coord(5/25)