Document (#28630)

Author

Dewey, M.

Title

Decimal classification and relativ index : introduction

Source

Theory of subject analysis: a sourcebook. Ed.: L.M. Chan, et al

Imprint

Littleton, CO : Libraries Unlimited

Year

1985

Pages

S.21-34

Abstract

To those outside the field of library science, the name Melvil Dewey (1851-1931) is virtually synonymous with library classification. To those in the field, Dewey has been recognized as the premier classification maker. His enormously successful system (i.e., successful in terms of the wide adoption of the system around the world for over one hundred years) has now undergone nineteen editions. The Dewey Decimal Classification has been translated into more than twenty languages and is the most widely adopted classification scheme in the world. Even in its earliest manifestations, the Dewey Decimal Classification contained features that anticipated modern classification theory. Among these are the use of mnemonics and the commonly applied standard subdivisions, later called "common isolates" by S. R. Ranganathan (q.v.), which are the mainstays of facet analysis and synthesis. The device of standard subdivisions is an indication of the recognition of common aspects that pervade all subjects. The use of mnemonics, whereby recurring concepts in the scheme are represented by the same notation, for example, geographic concepts and language concepts, eased the transition of the Dewey Decimal Classification from a largely enumerative system to an increasingly faceted one. Another significant feature of the Dewey Decimal Classification is the use of the hierarchical notation based an the arabic numeral system. To a large extent, this feature accounts for the wide use and success of the system in the world across language barriers. With the prospect of increasing online information retrieval, the hierarchical notation will have a significant impact an the effectiveness of the Dewey Decimal Classification as an online retrieval tool. Because the notation is hierarchical, for example, with increasing digits in a number representing narrower subjects and decreasing digits indicating broader subjects, the Dewey Decimal Classification is particularly useful in generic searches for broadening or narrowing search results. In the preface to the second edition of his Decimal Classification Dewey explained the features of his "new" system. The excerpt below presents his ideas and theory concerning the rational basis of his classification, the standard subdivisions, the hierarchical notation based an decimal numbers, the use of mnemonics, the relative index, and relative location. It also reflects Dewey's lifelong interest in simplified spelling.

Footnote

Nachdruck des Originalartikels mit Kommentierung durch die Herausgeber
Original in: Decimal Classification and Relativ Index for Arranging, Cataloging, and Indexing Public and Private Libraries and for Pamflets, Clippings, Notes, Scrap Books, Index rerums, etc. 2nd, rev. and greatly enlarged ed. Boston: Library Bureau 1885

Theme

International bedeutende Universalklassifikationen
Geschichte der Klassifikationssysteme

Object

DDC

Similar documents (author)

1. Dewey, M.: Dewey Decimal Classification and relative index (1989) 5.69

   5.6862135 = sum of:
     5.6862135 = weight(author_txt:dewey in 7586) [ClassicSimilarity], result of:
       5.6862135 = fieldWeight in 7586, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.097941 = idf(docFreq=12, maxDocs=42740)
         0.625 = fieldNorm(doc=7586)
   

2. Dewey, M.: Decimal classification beginnings (1990) 5.69

   5.6862135 = sum of:
     5.6862135 = weight(author_txt:dewey in 3623) [ClassicSimilarity], result of:
       5.6862135 = fieldWeight in 3623, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.097941 = idf(docFreq=12, maxDocs=42740)
         0.625 = fieldNorm(doc=3623)
   

3. Dewey, P.R.: 301 CD-ROMs to use in your library : descriptions, evaluations and practical advice (1995) 5.69

   5.6862135 = sum of:
     5.6862135 = weight(author_txt:dewey in 4596) [ClassicSimilarity], result of:
       5.6862135 = fieldWeight in 4596, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.097941 = idf(docFreq=12, maxDocs=42740)
         0.625 = fieldNorm(doc=4596)
   

4. Dewey, M.: Dewey Decimal classification and relative index (1990) 5.69

   5.6862135 = sum of:
     5.6862135 = weight(author_txt:dewey in 4157) [ClassicSimilarity], result of:
       5.6862135 = fieldWeight in 4157, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.097941 = idf(docFreq=12, maxDocs=42740)
         0.625 = fieldNorm(doc=4157)
   

5. Dewey, M.: Decimal Classification and Relativ Index for Arranging, Cataloging, and Indexing Public and Private Libraries and for Pamflets, Clippings, Notes, Scrap Books, Index rerums, etc. (1885) 5.69

   5.6862135 = sum of:
     5.6862135 = weight(author_txt:dewey in 968) [ClassicSimilarity], result of:
       5.6862135 = fieldWeight in 968, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.097941 = idf(docFreq=12, maxDocs=42740)
         0.625 = fieldNorm(doc=968)
   

Similar documents (content)

1. Hopwood, H.V.: Dewey expanded (1985) 0.57

   0.5725762 = sum of:
     0.5725762 = product of:
       1.3013096 = sum of:
         0.023661776 = weight(abstract_txt:index in 4630) [ClassicSimilarity], result of:
           0.023661776 = score(doc=4630,freq=3.0), product of:
             0.061545305 = queryWeight, product of:
               4.7353325 = idf(docFreq=1019, maxDocs=42740)
               0.01299704 = queryNorm
             0.3844611 = fieldWeight in 4630, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.7353325 = idf(docFreq=1019, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.0148856975 = weight(abstract_txt:wide in 4630) [ClassicSimilarity], result of:
           0.0148856975 = score(doc=4630,freq=1.0), product of:
             0.06517033 = queryWeight, product of:
               1.0290288 = boost
               4.872793 = idf(docFreq=888, maxDocs=42740)
               0.01299704 = queryNorm
             0.22841218 = fieldWeight in 4630, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.872793 = idf(docFreq=888, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.051885262 = weight(abstract_txt:scheme in 4630) [ClassicSimilarity], result of:
           0.051885262 = score(doc=4630,freq=6.0), product of:
             0.0824485 = queryWeight, product of:
               1.1574278 = boost
               5.4808054 = idf(docFreq=483, maxDocs=42740)
               0.01299704 = queryNorm
             0.6293051 = fieldWeight in 4630, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.4808054 = idf(docFreq=483, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.043471005 = weight(abstract_txt:subjects in 4630) [ClassicSimilarity], result of:
           0.043471005 = score(doc=4630,freq=2.0), product of:
             0.120973624 = queryWeight, product of:
               1.7170918 = boost
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.01299704 = queryNorm
             0.35934284 = fieldWeight in 4630, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.029370071 = weight(abstract_txt:system in 4630) [ClassicSimilarity], result of:
           0.029370071 = score(doc=4630,freq=4.0), product of:
             0.09314529 = queryWeight, product of:
               2.1308045 = boost
               3.3633559 = idf(docFreq=4021, maxDocs=42740)
               0.01299704 = queryNorm
             0.31531462 = fieldWeight in 4630, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.3633559 = idf(docFreq=4021, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.11322523 = weight(abstract_txt:subdivisions in 4630) [ClassicSimilarity], result of:
           0.11322523 = score(doc=4630,freq=2.0), product of:
             0.22900926 = queryWeight, product of:
               2.3625157 = boost
               7.458198 = idf(docFreq=66, maxDocs=42740)
               0.01299704 = queryNorm
             0.49441332 = fieldWeight in 4630, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.458198 = idf(docFreq=66, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.06925611 = weight(abstract_txt:hierarchical in 4630) [ClassicSimilarity], result of:
           0.06925611 = score(doc=4630,freq=2.0), product of:
             0.1816251 = queryWeight, product of:
               2.429436 = boost
               5.752094 = idf(docFreq=368, maxDocs=42740)
               0.01299704 = queryNorm
             0.38131356 = fieldWeight in 4630, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.752094 = idf(docFreq=368, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.14371303 = weight(abstract_txt:notation in 4630) [ClassicSimilarity], result of:
           0.14371303 = score(doc=4630,freq=2.0), product of:
             0.31830093 = queryWeight, product of:
               3.5957668 = boost
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.01299704 = queryNorm
             0.45150048 = fieldWeight in 4630, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.18539748 = weight(abstract_txt:classification in 4630) [ClassicSimilarity], result of:
           0.18539748 = score(doc=4630,freq=12.0), product of:
             0.28544146 = queryWeight, product of:
               5.490574 = boost
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.01299704 = queryNorm
             0.6495114 = fieldWeight in 4630, product of:
               3.4641016 = tf(freq=12.0), with freq of:
                 12.0 = termFreq=12.0
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.2841715 = weight(abstract_txt:dewey in 4630) [ClassicSimilarity], result of:
           0.2841715 = score(doc=4630,freq=6.0), product of:
             0.42293915 = queryWeight, product of:
               5.560934 = boost
               5.8517494 = idf(docFreq=333, maxDocs=42740)
               0.01299704 = queryNorm
             0.6718969 = fieldWeight in 4630, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.8517494 = idf(docFreq=333, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
         0.34227246 = weight(abstract_txt:decimal in 4630) [ClassicSimilarity], result of:
           0.34227246 = score(doc=4630,freq=7.0), product of:
             0.454803 = queryWeight, product of:
               5.766608 = boost
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.01299704 = queryNorm
             0.752573 = fieldWeight in 4630, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.046875 = fieldNorm(doc=4630)
       0.44 = coord(11/25)
   

2. Gnoli, C.: Notation (2018) 0.37

   0.3708263 = sum of:
     0.3708263 = product of:
       1.1588322 = sum of:
         0.024014918 = weight(abstract_txt:common in 651) [ClassicSimilarity], result of:
           0.024014918 = score(doc=651,freq=1.0), product of:
             0.063771315 = queryWeight, product of:
               1.0179237 = boost
               4.820207 = idf(docFreq=936, maxDocs=42740)
               0.01299704 = queryNorm
             0.3765787 = fieldWeight in 651, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.820207 = idf(docFreq=936, maxDocs=42740)
               0.078125 = fieldNorm(doc=651)
         0.08873483 = weight(abstract_txt:subjects in 651) [ClassicSimilarity], result of:
           0.08873483 = score(doc=651,freq=3.0), product of:
             0.120973624 = queryWeight, product of:
               1.7170918 = boost
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.01299704 = queryNorm
             0.73350555 = fieldWeight in 651, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.078125 = fieldNorm(doc=651)
         0.16147801 = weight(abstract_txt:digits in 651) [ClassicSimilarity], result of:
           0.16147801 = score(doc=651,freq=1.0), product of:
             0.2271853 = queryWeight, product of:
               1.9212888 = boost
               9.097941 = idf(docFreq=12, maxDocs=42740)
               0.01299704 = queryNorm
             0.7107767 = fieldWeight in 651, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.097941 = idf(docFreq=12, maxDocs=42740)
               0.078125 = fieldNorm(doc=651)
         0.08161911 = weight(abstract_txt:hierarchical in 651) [ClassicSimilarity], result of:
           0.08161911 = score(doc=651,freq=1.0), product of:
             0.1816251 = queryWeight, product of:
               2.429436 = boost
               5.752094 = idf(docFreq=368, maxDocs=42740)
               0.01299704 = queryNorm
             0.44938233 = fieldWeight in 651, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.752094 = idf(docFreq=368, maxDocs=42740)
               0.078125 = fieldNorm(doc=651)
         0.23952171 = weight(abstract_txt:notation in 651) [ClassicSimilarity], result of:
           0.23952171 = score(doc=651,freq=2.0), product of:
             0.31830093 = queryWeight, product of:
               3.5957668 = boost
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.01299704 = queryNorm
             0.75250083 = fieldWeight in 651, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.078125 = fieldNorm(doc=651)
         0.1544979 = weight(abstract_txt:classification in 651) [ClassicSimilarity], result of:
           0.1544979 = score(doc=651,freq=3.0), product of:
             0.28544146 = queryWeight, product of:
               5.490574 = boost
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.01299704 = queryNorm
             0.5412595 = fieldWeight in 651, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.078125 = fieldNorm(doc=651)
         0.19335422 = weight(abstract_txt:dewey in 651) [ClassicSimilarity], result of:
           0.19335422 = score(doc=651,freq=1.0), product of:
             0.42293915 = queryWeight, product of:
               5.560934 = boost
               5.8517494 = idf(docFreq=333, maxDocs=42740)
               0.01299704 = queryNorm
             0.45716792 = fieldWeight in 651, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8517494 = idf(docFreq=333, maxDocs=42740)
               0.078125 = fieldNorm(doc=651)
         0.21561141 = weight(abstract_txt:decimal in 651) [ClassicSimilarity], result of:
           0.21561141 = score(doc=651,freq=1.0), product of:
             0.454803 = queryWeight, product of:
               5.766608 = boost
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.01299704 = queryNorm
             0.4740765 = fieldWeight in 651, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.078125 = fieldNorm(doc=651)
       0.32 = coord(8/25)
   

3. McIlwaine, I.C.: ¬The UDC and the World Wide Web (2003) 0.35

   0.34819672 = sum of:
     0.34819672 = product of:
       0.8704918 = sum of:
         0.024809496 = weight(abstract_txt:wide in 4815) [ClassicSimilarity], result of:
           0.024809496 = score(doc=4815,freq=1.0), product of:
             0.06517033 = queryWeight, product of:
               1.0290288 = boost
               4.872793 = idf(docFreq=888, maxDocs=42740)
               0.01299704 = queryNorm
             0.38068697 = fieldWeight in 4815, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.872793 = idf(docFreq=888, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.03530345 = weight(abstract_txt:scheme in 4815) [ClassicSimilarity], result of:
           0.03530345 = score(doc=4815,freq=1.0), product of:
             0.0824485 = queryWeight, product of:
               1.1574278 = boost
               5.4808054 = idf(docFreq=483, maxDocs=42740)
               0.01299704 = queryNorm
             0.4281879 = fieldWeight in 4815, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4808054 = idf(docFreq=483, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.028159134 = weight(abstract_txt:world in 4815) [ClassicSimilarity], result of:
           0.028159134 = score(doc=4815,freq=1.0), product of:
             0.081173554 = queryWeight, product of:
               1.4065509 = boost
               4.4403243 = idf(docFreq=1369, maxDocs=42740)
               0.01299704 = queryNorm
             0.34690034 = fieldWeight in 4815, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4403243 = idf(docFreq=1369, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.0436144 = weight(abstract_txt:concepts in 4815) [ClassicSimilarity], result of:
           0.0436144 = score(doc=4815,freq=2.0), product of:
             0.0862472 = queryWeight, product of:
               1.449842 = boost
               4.576989 = idf(docFreq=1194, maxDocs=42740)
               0.01299704 = queryNorm
             0.50569063 = fieldWeight in 4815, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.576989 = idf(docFreq=1194, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.051231075 = weight(abstract_txt:subjects in 4815) [ClassicSimilarity], result of:
           0.051231075 = score(doc=4815,freq=1.0), product of:
             0.120973624 = queryWeight, product of:
               1.7170918 = boost
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.01299704 = queryNorm
             0.42348963 = fieldWeight in 4815, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.420667 = idf(docFreq=513, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.02447506 = weight(abstract_txt:system in 4815) [ClassicSimilarity], result of:
           0.02447506 = score(doc=4815,freq=1.0), product of:
             0.09314529 = queryWeight, product of:
               2.1308045 = boost
               3.3633559 = idf(docFreq=4021, maxDocs=42740)
               0.01299704 = queryNorm
             0.2627622 = fieldWeight in 4815, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3633559 = idf(docFreq=4021, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.08161911 = weight(abstract_txt:hierarchical in 4815) [ClassicSimilarity], result of:
           0.08161911 = score(doc=4815,freq=1.0), product of:
             0.1816251 = queryWeight, product of:
               2.429436 = boost
               5.752094 = idf(docFreq=368, maxDocs=42740)
               0.01299704 = queryNorm
             0.44938233 = fieldWeight in 4815, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.752094 = idf(docFreq=368, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.23952171 = weight(abstract_txt:notation in 4815) [ClassicSimilarity], result of:
           0.23952171 = score(doc=4815,freq=2.0), product of:
             0.31830093 = queryWeight, product of:
               3.5957668 = boost
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.01299704 = queryNorm
             0.75250083 = fieldWeight in 4815, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.126147 = weight(abstract_txt:classification in 4815) [ClassicSimilarity], result of:
           0.126147 = score(doc=4815,freq=2.0), product of:
             0.28544146 = queryWeight, product of:
               5.490574 = boost
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.01299704 = queryNorm
             0.44193652 = fieldWeight in 4815, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
         0.21561141 = weight(abstract_txt:decimal in 4815) [ClassicSimilarity], result of:
           0.21561141 = score(doc=4815,freq=1.0), product of:
             0.454803 = queryWeight, product of:
               5.766608 = boost
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.01299704 = queryNorm
             0.4740765 = fieldWeight in 4815, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.078125 = fieldNorm(doc=4815)
       0.4 = coord(10/25)
   

4. Mitchell, J.S.: Relationships in the Dewey Decimal Classification system (2001) 0.30

   0.29866752 = sum of:
     0.29866752 = product of:
       1.0666697 = sum of:
         0.027322264 = weight(abstract_txt:index in 2154) [ClassicSimilarity], result of:
           0.027322264 = score(doc=2154,freq=1.0), product of:
             0.061545305 = queryWeight, product of:
               4.7353325 = idf(docFreq=1019, maxDocs=42740)
               0.01299704 = queryNorm
             0.44393742 = fieldWeight in 2154, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7353325 = idf(docFreq=1019, maxDocs=42740)
               0.09375 = fieldNorm(doc=2154)
         0.0589159 = weight(abstract_txt:relative in 2154) [ClassicSimilarity], result of:
           0.0589159 = score(doc=2154,freq=1.0), product of:
             0.10272405 = queryWeight, product of:
               1.2919289 = boost
               6.117713 = idf(docFreq=255, maxDocs=42740)
               0.01299704 = queryNorm
             0.57353556 = fieldWeight in 2154, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.117713 = idf(docFreq=255, maxDocs=42740)
               0.09375 = fieldNorm(doc=2154)
         0.050870452 = weight(abstract_txt:system in 2154) [ClassicSimilarity], result of:
           0.050870452 = score(doc=2154,freq=3.0), product of:
             0.09314529 = queryWeight, product of:
               2.1308045 = boost
               3.3633559 = idf(docFreq=4021, maxDocs=42740)
               0.01299704 = queryNorm
             0.5461409 = fieldWeight in 2154, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.3633559 = idf(docFreq=4021, maxDocs=42740)
               0.09375 = fieldNorm(doc=2154)
         0.28742605 = weight(abstract_txt:notation in 2154) [ClassicSimilarity], result of:
           0.28742605 = score(doc=2154,freq=2.0), product of:
             0.31830093 = queryWeight, product of:
               3.5957668 = boost
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.01299704 = queryNorm
             0.90300095 = fieldWeight in 2154, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.09375 = fieldNorm(doc=2154)
         0.1513764 = weight(abstract_txt:classification in 2154) [ClassicSimilarity], result of:
           0.1513764 = score(doc=2154,freq=2.0), product of:
             0.28544146 = queryWeight, product of:
               5.490574 = boost
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.01299704 = queryNorm
             0.5303238 = fieldWeight in 2154, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.09375 = fieldNorm(doc=2154)
         0.23202506 = weight(abstract_txt:dewey in 2154) [ClassicSimilarity], result of:
           0.23202506 = score(doc=2154,freq=1.0), product of:
             0.42293915 = queryWeight, product of:
               5.560934 = boost
               5.8517494 = idf(docFreq=333, maxDocs=42740)
               0.01299704 = queryNorm
             0.5486015 = fieldWeight in 2154, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8517494 = idf(docFreq=333, maxDocs=42740)
               0.09375 = fieldNorm(doc=2154)
         0.2587337 = weight(abstract_txt:decimal in 2154) [ClassicSimilarity], result of:
           0.2587337 = score(doc=2154,freq=1.0), product of:
             0.454803 = queryWeight, product of:
               5.766608 = boost
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.01299704 = queryNorm
             0.56889176 = fieldWeight in 2154, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.09375 = fieldNorm(doc=2154)
       0.28 = coord(7/25)
   

5. Beall, J.: Editing the Dewey Decimal Classification online : the evolution of the DDC database (1992) 0.30

   0.2970726 = sum of:
     0.2970726 = product of:
       1.2378025 = sum of:
         0.039160095 = weight(abstract_txt:system in 2085) [ClassicSimilarity], result of:
           0.039160095 = score(doc=2085,freq=1.0), product of:
             0.09314529 = queryWeight, product of:
               2.1308045 = boost
               3.3633559 = idf(docFreq=4021, maxDocs=42740)
               0.01299704 = queryNorm
             0.42041948 = fieldWeight in 2085, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3633559 = idf(docFreq=4021, maxDocs=42740)
               0.125 = fieldNorm(doc=2085)
         0.13059057 = weight(abstract_txt:hierarchical in 2085) [ClassicSimilarity], result of:
           0.13059057 = score(doc=2085,freq=1.0), product of:
             0.1816251 = queryWeight, product of:
               2.429436 = boost
               5.752094 = idf(docFreq=368, maxDocs=42740)
               0.01299704 = queryNorm
             0.7190117 = fieldWeight in 2085, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.752094 = idf(docFreq=368, maxDocs=42740)
               0.125 = fieldNorm(doc=2085)
         0.2709879 = weight(abstract_txt:notation in 2085) [ClassicSimilarity], result of:
           0.2709879 = score(doc=2085,freq=1.0), product of:
             0.31830093 = queryWeight, product of:
               3.5957668 = boost
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.01299704 = queryNorm
             0.8513575 = fieldWeight in 2085, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.81086 = idf(docFreq=127, maxDocs=42740)
               0.125 = fieldNorm(doc=2085)
         0.14271905 = weight(abstract_txt:classification in 2085) [ClassicSimilarity], result of:
           0.14271905 = score(doc=2085,freq=1.0), product of:
             0.28544146 = queryWeight, product of:
               5.490574 = boost
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.01299704 = queryNorm
             0.4999941 = fieldWeight in 2085, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9999528 = idf(docFreq=2127, maxDocs=42740)
               0.125 = fieldNorm(doc=2085)
         0.30936673 = weight(abstract_txt:dewey in 2085) [ClassicSimilarity], result of:
           0.30936673 = score(doc=2085,freq=1.0), product of:
             0.42293915 = queryWeight, product of:
               5.560934 = boost
               5.8517494 = idf(docFreq=333, maxDocs=42740)
               0.01299704 = queryNorm
             0.7314687 = fieldWeight in 2085, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8517494 = idf(docFreq=333, maxDocs=42740)
               0.125 = fieldNorm(doc=2085)
         0.34497824 = weight(abstract_txt:decimal in 2085) [ClassicSimilarity], result of:
           0.34497824 = score(doc=2085,freq=1.0), product of:
             0.454803 = queryWeight, product of:
               5.766608 = boost
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.01299704 = queryNorm
             0.7585224 = fieldWeight in 2085, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.068179 = idf(docFreq=268, maxDocs=42740)
               0.125 = fieldNorm(doc=2085)
       0.24 = coord(6/25)