Document (#10663)

Author
Wittmann, A.
Title
Classifying and indexing of patent documents : a retired patent documentalist looks back
Source
World patent information. 16(1994) no.4, S.233-235
Year
1994
Abstract
The author, former head of information and documentation at the German patent office, recalls more than 30 years of international cooperation in the classifying and indexing of patent documents. Reviews the work of the former ICEREPAT (International Cooperation in Information Retrieval among Examining Patent Offices) which produced coordinate indexing term lists. Describes the development of the IPC which produced a purely hierarchical classification with function oriented and application oriented entries. Completion of the IPC as a basic search tool was greeted with satisfaction by the patent world. Revised versions of IPC are issued every 5 years in English and in French. Outlines the problems still associated with the searching of patent documents
Field
Patentinformation
Object
IPC

Similar documents (author)

  1. Wittmann, C.: Subheadings in award-winning book indexes : a quantitative evaluation (1990) 6.17
    6.169457 = sum of:
      6.169457 = weight(author_txt:wittmann in 7772) [ClassicSimilarity], result of:
        6.169457 = fieldWeight in 7772, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.871131 = idf(docFreq=5, maxDocs=42740)
          0.625 = fieldNorm(doc=7772)
    
  2. Wittmann, C.: Limitations of indexing modules in word-processing software (1991) 6.17
    6.169457 = sum of:
      6.169457 = weight(author_txt:wittmann in 76) [ClassicSimilarity], result of:
        6.169457 = fieldWeight in 76, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.871131 = idf(docFreq=5, maxDocs=42740)
          0.625 = fieldNorm(doc=76)
    
  3. Wittmann, A.: Patentdokumentation (1990) 6.17
    6.169457 = sum of:
      6.169457 = weight(author_txt:wittmann in 873) [ClassicSimilarity], result of:
        6.169457 = fieldWeight in 873, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.871131 = idf(docFreq=5, maxDocs=42740)
          0.625 = fieldNorm(doc=873)
    
  4. Wittmann, R.: Geschichte des deutschen Buchhandels : ein Überblick (1991) 6.17
    6.169457 = sum of:
      6.169457 = weight(author_txt:wittmann in 3545) [ClassicSimilarity], result of:
        6.169457 = fieldWeight in 3545, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.871131 = idf(docFreq=5, maxDocs=42740)
          0.625 = fieldNorm(doc=3545)
    

Similar documents (content)

  1. Rampelmann, J.: Classification tools at the EPO (1996) 0.35
    0.35035035 = sum of:
      0.35035035 = product of:
        1.2512512 = sum of:
          0.050123163 = weight(abstract_txt:office in 3656) [ClassicSimilarity], result of:
            0.050123163 = score(doc=3656,freq=1.0), product of:
              0.096637376 = queryWeight, product of:
                1.0364716 = boost
                6.63901 = idf(docFreq=151, maxDocs=42740)
                0.014043792 = queryNorm
              0.51867265 = fieldWeight in 3656, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.63901 = idf(docFreq=151, maxDocs=42740)
                0.078125 = fieldNorm(doc=3656)
          0.008200144 = weight(abstract_txt:with in 3656) [ClassicSimilarity], result of:
            0.008200144 = score(doc=3656,freq=1.0), product of:
              0.041690864 = queryWeight, product of:
                1.1791415 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.014043792 = queryNorm
              0.19668923 = fieldWeight in 3656, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.078125 = fieldNorm(doc=3656)
          0.035474926 = weight(abstract_txt:international in 3656) [ClassicSimilarity], result of:
            0.035474926 = score(doc=3656,freq=1.0), product of:
              0.09669644 = queryWeight, product of:
                1.46624 = boost
                4.6959233 = idf(docFreq=1060, maxDocs=42740)
                0.014043792 = queryNorm
              0.366869 = fieldWeight in 3656, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6959233 = idf(docFreq=1060, maxDocs=42740)
                0.078125 = fieldNorm(doc=3656)
          0.050652094 = weight(abstract_txt:documents in 3656) [ClassicSimilarity], result of:
            0.050652094 = score(doc=3656,freq=2.0), product of:
              0.111399055 = queryWeight, product of:
                1.9274638 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.014043792 = queryNorm
              0.45469052 = fieldWeight in 3656, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.078125 = fieldNorm(doc=3656)
          0.04201778 = weight(abstract_txt:indexing in 3656) [ClassicSimilarity], result of:
            0.04201778 = score(doc=3656,freq=1.0), product of:
              0.12391256 = queryWeight, product of:
                2.0328398 = boost
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.014043792 = queryNorm
              0.3390922 = fieldWeight in 3656, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.078125 = fieldNorm(doc=3656)
          0.09965534 = weight(abstract_txt:classifying in 3656) [ClassicSimilarity], result of:
            0.09965534 = score(doc=3656,freq=1.0), product of:
              0.19251439 = queryWeight, product of:
                2.0688617 = boost
                6.625938 = idf(docFreq=153, maxDocs=42740)
                0.014043792 = queryNorm
              0.5176514 = fieldWeight in 3656, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.625938 = idf(docFreq=153, maxDocs=42740)
                0.078125 = fieldNorm(doc=3656)
          0.96512777 = weight(abstract_txt:patent in 3656) [ClassicSimilarity], result of:
            0.96512777 = score(doc=3656,freq=6.0), product of:
              0.7308444 = queryWeight, product of:
                7.5413017 = boost
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.014043792 = queryNorm
              1.3205653 = fieldWeight in 3656, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.078125 = fieldNorm(doc=3656)
        0.28 = coord(7/25)
    
  2. White, M.J.: Patents and patent searching (2009) 0.23
    0.23072499 = sum of:
      0.23072499 = product of:
        1.4420313 = sum of:
          0.12909551 = weight(abstract_txt:offices in 860) [ClassicSimilarity], result of:
            0.12909551 = score(doc=860,freq=2.0), product of:
              0.14411756 = queryWeight, product of:
                1.2657365 = boost
                8.107542 = idf(docFreq=34, maxDocs=42740)
                0.014043792 = queryNorm
              0.8957653 = fieldWeight in 860, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.107542 = idf(docFreq=34, maxDocs=42740)
                0.078125 = fieldNorm(doc=860)
          0.05081259 = weight(abstract_txt:years in 860) [ClassicSimilarity], result of:
            0.05081259 = score(doc=860,freq=2.0), product of:
              0.0975215 = queryWeight, product of:
                1.4724821 = boost
                4.7159147 = idf(docFreq=1039, maxDocs=42740)
                0.014043792 = queryNorm
              0.5210399 = fieldWeight in 860, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7159147 = idf(docFreq=1039, maxDocs=42740)
                0.078125 = fieldNorm(doc=860)
          0.080088 = weight(abstract_txt:documents in 860) [ClassicSimilarity], result of:
            0.080088 = score(doc=860,freq=5.0), product of:
              0.111399055 = queryWeight, product of:
                1.9274638 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.014043792 = queryNorm
              0.7189289 = fieldWeight in 860, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.078125 = fieldNorm(doc=860)
          1.1820352 = weight(abstract_txt:patent in 860) [ClassicSimilarity], result of:
            1.1820352 = score(doc=860,freq=9.0), product of:
              0.7308444 = queryWeight, product of:
                7.5413017 = boost
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.014043792 = queryNorm
              1.6173555 = fieldWeight in 860, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.078125 = fieldNorm(doc=860)
        0.16 = coord(4/25)
    
  3. Liu, D.-R.; Shih, M.-J.: Hybrid-patent classification based on patent-network analysis (2011) 0.20
    0.20370334 = sum of:
      0.20370334 = product of:
        1.2731459 = sum of:
          0.04009853 = weight(abstract_txt:office in 1190) [ClassicSimilarity], result of:
            0.04009853 = score(doc=1190,freq=1.0), product of:
              0.096637376 = queryWeight, product of:
                1.0364716 = boost
                6.63901 = idf(docFreq=151, maxDocs=42740)
                0.014043792 = queryNorm
              0.41493812 = fieldWeight in 1190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.63901 = idf(docFreq=151, maxDocs=42740)
                0.0625 = fieldNorm(doc=1190)
          0.01312023 = weight(abstract_txt:with in 1190) [ClassicSimilarity], result of:
            0.01312023 = score(doc=1190,freq=4.0), product of:
              0.041690864 = queryWeight, product of:
                1.1791415 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.014043792 = queryNorm
              0.31470278 = fieldWeight in 1190, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.0625 = fieldNorm(doc=1190)
          0.040521678 = weight(abstract_txt:documents in 1190) [ClassicSimilarity], result of:
            0.040521678 = score(doc=1190,freq=2.0), product of:
              0.111399055 = queryWeight, product of:
                1.9274638 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.014043792 = queryNorm
              0.36375242 = fieldWeight in 1190, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.0625 = fieldNorm(doc=1190)
          1.1794055 = weight(abstract_txt:patent in 1190) [ClassicSimilarity], result of:
            1.1794055 = score(doc=1190,freq=14.0), product of:
              0.7308444 = queryWeight, product of:
                7.5413017 = boost
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.014043792 = queryNorm
              1.6137574 = fieldWeight in 1190, product of:
                3.7416575 = tf(freq=14.0), with freq of:
                  14.0 = termFreq=14.0
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.0625 = fieldNorm(doc=1190)
        0.16 = coord(4/25)
    
  4. Faucompre, P.; Quoniam, L.; Dou, H.: ¬The function-application relation through a link between classification and indexing (1997) 0.18
    0.1848435 = sum of:
      0.1848435 = product of:
        0.92421746 = sum of:
          0.042569913 = weight(abstract_txt:international in 1757) [ClassicSimilarity], result of:
            0.042569913 = score(doc=1757,freq=1.0), product of:
              0.09669644 = queryWeight, product of:
                1.46624 = boost
                4.6959233 = idf(docFreq=1060, maxDocs=42740)
                0.014043792 = queryNorm
              0.44024283 = fieldWeight in 1757, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6959233 = idf(docFreq=1060, maxDocs=42740)
                0.09375 = fieldNorm(doc=1757)
          0.04297973 = weight(abstract_txt:documents in 1757) [ClassicSimilarity], result of:
            0.04297973 = score(doc=1757,freq=1.0), product of:
              0.111399055 = queryWeight, product of:
                1.9274638 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.014043792 = queryNorm
              0.3858177 = fieldWeight in 1757, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.09375 = fieldNorm(doc=1757)
          0.050421342 = weight(abstract_txt:indexing in 1757) [ClassicSimilarity], result of:
            0.050421342 = score(doc=1757,freq=1.0), product of:
              0.12391256 = queryWeight, product of:
                2.0328398 = boost
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.014043792 = queryNorm
              0.40691066 = fieldWeight in 1757, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.09375 = fieldNorm(doc=1757)
          0.11958641 = weight(abstract_txt:classifying in 1757) [ClassicSimilarity], result of:
            0.11958641 = score(doc=1757,freq=1.0), product of:
              0.19251439 = queryWeight, product of:
                2.0688617 = boost
                6.625938 = idf(docFreq=153, maxDocs=42740)
                0.014043792 = queryNorm
              0.62118167 = fieldWeight in 1757, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.625938 = idf(docFreq=153, maxDocs=42740)
                0.09375 = fieldNorm(doc=1757)
          0.6686601 = weight(abstract_txt:patent in 1757) [ClassicSimilarity], result of:
            0.6686601 = score(doc=1757,freq=2.0), product of:
              0.7308444 = queryWeight, product of:
                7.5413017 = boost
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.014043792 = queryNorm
              0.9149145 = fieldWeight in 1757, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.09375 = fieldNorm(doc=1757)
        0.2 = coord(5/25)
    
  5. Stock, M.; Stock, W.G.: Intellectual property information : A comparative analysis of main information providers (2006) 0.18
    0.18180084 = sum of:
      0.18180084 = product of:
        1.1362553 = sum of:
          0.050123163 = weight(abstract_txt:office in 1336) [ClassicSimilarity], result of:
            0.050123163 = score(doc=1336,freq=1.0), product of:
              0.096637376 = queryWeight, product of:
                1.0364716 = boost
                6.63901 = idf(docFreq=151, maxDocs=42740)
                0.014043792 = queryNorm
              0.51867265 = fieldWeight in 1336, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.63901 = idf(docFreq=151, maxDocs=42740)
                0.078125 = fieldNorm(doc=1336)
          0.008200144 = weight(abstract_txt:with in 1336) [ClassicSimilarity], result of:
            0.008200144 = score(doc=1336,freq=1.0), product of:
              0.041690864 = queryWeight, product of:
                1.1791415 = boost
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.014043792 = queryNorm
              0.19668923 = fieldWeight in 1336, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5176222 = idf(docFreq=9369, maxDocs=42740)
                0.078125 = fieldNorm(doc=1336)
          0.035474926 = weight(abstract_txt:international in 1336) [ClassicSimilarity], result of:
            0.035474926 = score(doc=1336,freq=1.0), product of:
              0.09669644 = queryWeight, product of:
                1.46624 = boost
                4.6959233 = idf(docFreq=1060, maxDocs=42740)
                0.014043792 = queryNorm
              0.366869 = fieldWeight in 1336, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6959233 = idf(docFreq=1060, maxDocs=42740)
                0.078125 = fieldNorm(doc=1336)
          1.042457 = weight(abstract_txt:patent in 1336) [ClassicSimilarity], result of:
            1.042457 = score(doc=1336,freq=7.0), product of:
              0.7308444 = queryWeight, product of:
                7.5413017 = boost
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.014043792 = queryNorm
              1.4263735 = fieldWeight in 1336, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                6.900717 = idf(docFreq=116, maxDocs=42740)
                0.078125 = fieldNorm(doc=1336)
        0.16 = coord(4/25)