Document (#7025)

Author
Chang, R.
Title
¬The development of indexing technology
Source
Library software review. 12(1993) no.3, S.30-35
Year
1993
Abstract
Reviews the basic techniques of computerized indexing, including various file accessing methods such as: Sequential Access Method (SAM); Direct Access Method (DAM); Indexed Sequential Access Method (ISAM), and Virtual Indexed Sequential Access Method (VSAM); and various B-tree (balanced tree)structures. Illustrates how records are stored and accessed, and how B-trees are used to for improving the operations of information retrieval and maintenance
Theme
Retrievalalgorithmen

Similar documents (author)

  1. Chang, R.: DBase, relational data models, and MARC records (1992) 4.80
    4.796191 = sum of:
      4.796191 = weight(author_txt:chang in 5057) [ClassicSimilarity], result of:
        4.796191 = fieldWeight in 5057, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.6739063 = idf(docFreq=53, maxDocs=42740)
          0.625 = fieldNorm(doc=5057)
    
  2. Chang, R.: Keyword searching and indexing (1993) 4.80
    4.796191 = sum of:
      4.796191 = weight(author_txt:chang in 7223) [ClassicSimilarity], result of:
        4.796191 = fieldWeight in 7223, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.6739063 = idf(docFreq=53, maxDocs=42740)
          0.625 = fieldNorm(doc=7223)
    
  3. Chang, R.H.: To classify or not to classify? : a new look at an old problem (1989) 4.80
    4.796191 = sum of:
      4.796191 = weight(author_txt:chang in 2579) [ClassicSimilarity], result of:
        4.796191 = fieldWeight in 2579, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.6739063 = idf(docFreq=53, maxDocs=42740)
          0.625 = fieldNorm(doc=2579)
    
  4. Chang, S.H.: ¬The current state of Web search engines (1999) 4.80
    4.796191 = sum of:
      4.796191 = weight(author_txt:chang in 1510) [ClassicSimilarity], result of:
        4.796191 = fieldWeight in 1510, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.6739063 = idf(docFreq=53, maxDocs=42740)
          0.625 = fieldNorm(doc=1510)
    
  5. Chang, M.: ¬An electronic finding aid using extensible markup language (XML) and encoded archival description (EAD) (2000) 4.80
    4.796191 = sum of:
      4.796191 = weight(author_txt:chang in 887) [ClassicSimilarity], result of:
        4.796191 = fieldWeight in 887, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.6739063 = idf(docFreq=53, maxDocs=42740)
          0.625 = fieldNorm(doc=887)
    

Similar documents (content)

  1. Chang, R.: Keyword searching and indexing (1993) 0.23
    0.22849579 = sum of:
      0.22849579 = product of:
        0.8160564 = sum of:
          0.03855708 = weight(abstract_txt:techniques in 7223) [ClassicSimilarity], result of:
            0.03855708 = score(doc=7223,freq=1.0), product of:
              0.06815799 = queryWeight, product of:
                1.024535 = boost
                4.525612 = idf(docFreq=1257, maxDocs=42740)
                0.014699844 = queryNorm
              0.5657015 = fieldWeight in 7223, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.525612 = idf(docFreq=1257, maxDocs=42740)
                0.125 = fieldNorm(doc=7223)
          0.050302986 = weight(abstract_txt:reviews in 7223) [ClassicSimilarity], result of:
            0.050302986 = score(doc=7223,freq=1.0), product of:
              0.08137854 = queryWeight, product of:
                1.119498 = boost
                4.945086 = idf(docFreq=826, maxDocs=42740)
                0.014699844 = queryNorm
              0.61813575 = fieldWeight in 7223, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.945086 = idf(docFreq=826, maxDocs=42740)
                0.125 = fieldNorm(doc=7223)
          0.05147792 = weight(abstract_txt:basic in 7223) [ClassicSimilarity], result of:
            0.05147792 = score(doc=7223,freq=1.0), product of:
              0.08264084 = queryWeight, product of:
                1.1281471 = boost
                4.983291 = idf(docFreq=795, maxDocs=42740)
                0.014699844 = queryNorm
              0.6229114 = fieldWeight in 7223, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.983291 = idf(docFreq=795, maxDocs=42740)
                0.125 = fieldNorm(doc=7223)
          0.056466542 = weight(abstract_txt:structures in 7223) [ClassicSimilarity], result of:
            0.056466542 = score(doc=7223,freq=1.0), product of:
              0.08789716 = queryWeight, product of:
                1.1634716 = boost
                5.139328 = idf(docFreq=680, maxDocs=42740)
                0.014699844 = queryNorm
              0.642416 = fieldWeight in 7223, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.139328 = idf(docFreq=680, maxDocs=42740)
                0.125 = fieldNorm(doc=7223)
          0.1062478 = weight(abstract_txt:stored in 7223) [ClassicSimilarity], result of:
            0.1062478 = score(doc=7223,freq=1.0), product of:
              0.13396582 = queryWeight, product of:
                1.4363668 = boost
                6.3447704 = idf(docFreq=203, maxDocs=42740)
                0.014699844 = queryNorm
              0.7930963 = fieldWeight in 7223, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3447704 = idf(docFreq=203, maxDocs=42740)
                0.125 = fieldNorm(doc=7223)
          0.1360553 = weight(abstract_txt:indexing in 7223) [ClassicSimilarity], result of:
            0.1360553 = score(doc=7223,freq=4.0), product of:
              0.12538561 = queryWeight, product of:
                1.9652021 = boost
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.014699844 = queryNorm
              1.085095 = fieldWeight in 7223, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.125 = fieldNorm(doc=7223)
          0.3769488 = weight(abstract_txt:tree in 7223) [ClassicSimilarity], result of:
            0.3769488 = score(doc=7223,freq=2.0), product of:
              0.3116274 = queryWeight, product of:
                3.098141 = boost
                6.842609 = idf(docFreq=123, maxDocs=42740)
                0.014699844 = queryNorm
              1.2096138 = fieldWeight in 7223, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.842609 = idf(docFreq=123, maxDocs=42740)
                0.125 = fieldNorm(doc=7223)
        0.28 = coord(7/25)
    
  2. Yang, C.C.; Lin, J.; Wei, C.-P.: Retaining knowledge for document management : category-tree integration by exploiting category relationships and hierarchical structures (2010) 0.23
    0.22598973 = sum of:
      0.22598973 = product of:
        0.8071062 = sum of:
          0.028233271 = weight(abstract_txt:structures in 582) [ClassicSimilarity], result of:
            0.028233271 = score(doc=582,freq=1.0), product of:
              0.08789716 = queryWeight, product of:
                1.1634716 = boost
                5.139328 = idf(docFreq=680, maxDocs=42740)
                0.014699844 = queryNorm
              0.321208 = fieldWeight in 582, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.139328 = idf(docFreq=680, maxDocs=42740)
                0.0625 = fieldNorm(doc=582)
          0.116303176 = weight(abstract_txt:operations in 582) [ClassicSimilarity], result of:
            0.116303176 = score(doc=582,freq=4.0), product of:
              0.14229023 = queryWeight, product of:
                1.480321 = boost
                6.5389266 = idf(docFreq=167, maxDocs=42740)
                0.014699844 = queryNorm
              0.8173658 = fieldWeight in 582, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.5389266 = idf(docFreq=167, maxDocs=42740)
                0.0625 = fieldNorm(doc=582)
          0.1827816 = weight(abstract_txt:trees in 582) [ClassicSimilarity], result of:
            0.1827816 = score(doc=582,freq=4.0), product of:
              0.19233975 = queryWeight, product of:
                1.7210872 = boost
                7.6024475 = idf(docFreq=57, maxDocs=42740)
                0.014699844 = queryNorm
              0.95030594 = fieldWeight in 582, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.6024475 = idf(docFreq=57, maxDocs=42740)
                0.0625 = fieldNorm(doc=582)
          0.03592248 = weight(abstract_txt:various in 582) [ClassicSimilarity], result of:
            0.03592248 = score(doc=582,freq=1.0), product of:
              0.1300334 = queryWeight, product of:
                2.0012937 = boost
                4.4200926 = idf(docFreq=1397, maxDocs=42740)
                0.014699844 = queryNorm
              0.2762558 = fieldWeight in 582, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4200926 = idf(docFreq=1397, maxDocs=42740)
                0.0625 = fieldNorm(doc=582)
          0.32644722 = weight(abstract_txt:tree in 582) [ClassicSimilarity], result of:
            0.32644722 = score(doc=582,freq=6.0), product of:
              0.3116274 = queryWeight, product of:
                3.098141 = boost
                6.842609 = idf(docFreq=123, maxDocs=42740)
                0.014699844 = queryNorm
              1.0475563 = fieldWeight in 582, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                6.842609 = idf(docFreq=123, maxDocs=42740)
                0.0625 = fieldNorm(doc=582)
          0.040506877 = weight(abstract_txt:access in 582) [ClassicSimilarity], result of:
            0.040506877 = score(doc=582,freq=1.0), product of:
              0.17748973 = queryWeight, product of:
                3.3066254 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.014699844 = queryNorm
              0.22822097 = fieldWeight in 582, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.0625 = fieldNorm(doc=582)
          0.07691157 = weight(abstract_txt:method in 582) [ClassicSimilarity], result of:
            0.07691157 = score(doc=582,freq=1.0), product of:
              0.27215427 = queryWeight, product of:
                4.0945477 = boost
                4.5216455 = idf(docFreq=1262, maxDocs=42740)
                0.014699844 = queryNorm
              0.28260285 = fieldWeight in 582, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5216455 = idf(docFreq=1262, maxDocs=42740)
                0.0625 = fieldNorm(doc=582)
        0.28 = coord(7/25)
    
  3. Falk, H.: Computer-based vertical files (1996) 0.17
    0.16819029 = sum of:
      0.16819029 = product of:
        0.70079285 = sum of:
          0.10778794 = weight(abstract_txt:file in 5802) [ClassicSimilarity], result of:
            0.10778794 = score(doc=5802,freq=4.0), product of:
              0.103220664 = queryWeight, product of:
                1.260816 = boost
                5.5693207 = idf(docFreq=442, maxDocs=42740)
                0.014699844 = queryNorm
              1.0442476 = fieldWeight in 5802, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.5693207 = idf(docFreq=442, maxDocs=42740)
                0.09375 = fieldNorm(doc=5802)
          0.13801993 = weight(abstract_txt:stored in 5802) [ClassicSimilarity], result of:
            0.13801993 = score(doc=5802,freq=3.0), product of:
              0.13396582 = queryWeight, product of:
                1.4363668 = boost
                6.3447704 = idf(docFreq=203, maxDocs=42740)
                0.014699844 = queryNorm
              1.0302624 = fieldWeight in 5802, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.3447704 = idf(docFreq=203, maxDocs=42740)
                0.09375 = fieldNorm(doc=5802)
          0.11652373 = weight(abstract_txt:computerized in 5802) [ClassicSimilarity], result of:
            0.11652373 = score(doc=5802,freq=2.0), product of:
              0.13698493 = queryWeight, product of:
                1.452462 = boost
                6.4158664 = idf(docFreq=189, maxDocs=42740)
                0.014699844 = queryNorm
              0.8506317 = fieldWeight in 5802, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.4158664 = idf(docFreq=189, maxDocs=42740)
                0.09375 = fieldNorm(doc=5802)
          0.10830753 = weight(abstract_txt:accessed in 5802) [ClassicSimilarity], result of:
            0.10830753 = score(doc=5802,freq=1.0), product of:
              0.16437875 = queryWeight, product of:
                1.591077 = boost
                7.0281615 = idf(docFreq=102, maxDocs=42740)
                0.014699844 = queryNorm
              0.6588901 = fieldWeight in 5802, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0281615 = idf(docFreq=102, maxDocs=42740)
                0.09375 = fieldNorm(doc=5802)
          0.08837051 = weight(abstract_txt:indexing in 5802) [ClassicSimilarity], result of:
            0.08837051 = score(doc=5802,freq=3.0), product of:
              0.12538561 = queryWeight, product of:
                1.9652021 = boost
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.014699844 = queryNorm
              0.7047899 = fieldWeight in 5802, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.09375 = fieldNorm(doc=5802)
          0.14178316 = weight(abstract_txt:indexed in 5802) [ClassicSimilarity], result of:
            0.14178316 = score(doc=5802,freq=1.0), product of:
              0.2478371 = queryWeight, product of:
                2.7629087 = boost
                6.102209 = idf(docFreq=259, maxDocs=42740)
                0.014699844 = queryNorm
              0.5720821 = fieldWeight in 5802, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.102209 = idf(docFreq=259, maxDocs=42740)
                0.09375 = fieldNorm(doc=5802)
        0.24 = coord(6/25)
    
  4. Bronson, R.J.: MeSH chemical headings and pharmacologic action (1997) 0.11
    0.11299355 = sum of:
      0.11299355 = product of:
        0.56496775 = sum of:
          0.049408223 = weight(abstract_txt:structures in 985) [ClassicSimilarity], result of:
            0.049408223 = score(doc=985,freq=1.0), product of:
              0.08789716 = queryWeight, product of:
                1.1634716 = boost
                5.139328 = idf(docFreq=680, maxDocs=42740)
                0.014699844 = queryNorm
              0.562114 = fieldWeight in 985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.139328 = idf(docFreq=680, maxDocs=42740)
                0.109375 = fieldNorm(doc=985)
          0.06287629 = weight(abstract_txt:file in 985) [ClassicSimilarity], result of:
            0.06287629 = score(doc=985,freq=1.0), product of:
              0.103220664 = queryWeight, product of:
                1.260816 = boost
                5.5693207 = idf(docFreq=442, maxDocs=42740)
                0.014699844 = queryNorm
              0.60914445 = fieldWeight in 985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5693207 = idf(docFreq=442, maxDocs=42740)
                0.109375 = fieldNorm(doc=985)
          0.15993391 = weight(abstract_txt:trees in 985) [ClassicSimilarity], result of:
            0.15993391 = score(doc=985,freq=1.0), product of:
              0.19233975 = queryWeight, product of:
                1.7210872 = boost
                7.6024475 = idf(docFreq=57, maxDocs=42740)
                0.014699844 = queryNorm
              0.8315177 = fieldWeight in 985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.6024475 = idf(docFreq=57, maxDocs=42740)
                0.109375 = fieldNorm(doc=985)
          0.059524197 = weight(abstract_txt:indexing in 985) [ClassicSimilarity], result of:
            0.059524197 = score(doc=985,freq=1.0), product of:
              0.12538561 = queryWeight, product of:
                1.9652021 = boost
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.014699844 = queryNorm
              0.4747291 = fieldWeight in 985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.34038 = idf(docFreq=1513, maxDocs=42740)
                0.109375 = fieldNorm(doc=985)
          0.23322517 = weight(abstract_txt:tree in 985) [ClassicSimilarity], result of:
            0.23322517 = score(doc=985,freq=1.0), product of:
              0.3116274 = queryWeight, product of:
                3.098141 = boost
                6.842609 = idf(docFreq=123, maxDocs=42740)
                0.014699844 = queryNorm
              0.74841034 = fieldWeight in 985, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.842609 = idf(docFreq=123, maxDocs=42740)
                0.109375 = fieldNorm(doc=985)
        0.2 = coord(5/25)
    
  5. Harman, D.; Fox, E.; Baeza-Yates, R.; Lee, W.: Inverted files (1992) 0.11
    0.10656678 = sum of:
      0.10656678 = product of:
        0.44402826 = sum of:
          0.03855708 = weight(abstract_txt:techniques in 4498) [ClassicSimilarity], result of:
            0.03855708 = score(doc=4498,freq=1.0), product of:
              0.06815799 = queryWeight, product of:
                1.024535 = boost
                4.525612 = idf(docFreq=1257, maxDocs=42740)
                0.014699844 = queryNorm
              0.5657015 = fieldWeight in 4498, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.525612 = idf(docFreq=1257, maxDocs=42740)
                0.125 = fieldNorm(doc=4498)
          0.05147792 = weight(abstract_txt:basic in 4498) [ClassicSimilarity], result of:
            0.05147792 = score(doc=4498,freq=1.0), product of:
              0.08264084 = queryWeight, product of:
                1.1281471 = boost
                4.983291 = idf(docFreq=795, maxDocs=42740)
                0.014699844 = queryNorm
              0.6229114 = fieldWeight in 4498, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.983291 = idf(docFreq=795, maxDocs=42740)
                0.125 = fieldNorm(doc=4498)
          0.056466542 = weight(abstract_txt:structures in 4498) [ClassicSimilarity], result of:
            0.056466542 = score(doc=4498,freq=1.0), product of:
              0.08789716 = queryWeight, product of:
                1.1634716 = boost
                5.139328 = idf(docFreq=680, maxDocs=42740)
                0.014699844 = queryNorm
              0.642416 = fieldWeight in 4498, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.139328 = idf(docFreq=680, maxDocs=42740)
                0.125 = fieldNorm(doc=4498)
          0.07185862 = weight(abstract_txt:file in 4498) [ClassicSimilarity], result of:
            0.07185862 = score(doc=4498,freq=1.0), product of:
              0.103220664 = queryWeight, product of:
                1.260816 = boost
                5.5693207 = idf(docFreq=442, maxDocs=42740)
                0.014699844 = queryNorm
              0.6961651 = fieldWeight in 4498, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5693207 = idf(docFreq=442, maxDocs=42740)
                0.125 = fieldNorm(doc=4498)
          0.07184496 = weight(abstract_txt:various in 4498) [ClassicSimilarity], result of:
            0.07184496 = score(doc=4498,freq=1.0), product of:
              0.1300334 = queryWeight, product of:
                2.0012937 = boost
                4.4200926 = idf(docFreq=1397, maxDocs=42740)
                0.014699844 = queryNorm
              0.5525116 = fieldWeight in 4498, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4200926 = idf(docFreq=1397, maxDocs=42740)
                0.125 = fieldNorm(doc=4498)
          0.15382314 = weight(abstract_txt:method in 4498) [ClassicSimilarity], result of:
            0.15382314 = score(doc=4498,freq=1.0), product of:
              0.27215427 = queryWeight, product of:
                4.0945477 = boost
                4.5216455 = idf(docFreq=1262, maxDocs=42740)
                0.014699844 = queryNorm
              0.5652057 = fieldWeight in 4498, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5216455 = idf(docFreq=1262, maxDocs=42740)
                0.125 = fieldNorm(doc=4498)
        0.24 = coord(6/25)