Document (#4851)

Author
Nahl-Jakobovits, D.
Tenopir, C.
Title
Databases online and on CD-ROM : how they differ, let us count the ways
Source
Database. 15(1992) no.1, S.42-50
Year
1992
Abstract
The study investigated the factors of response time, coverage, content and cost in CD-ROM and online versions of 2 popular databases: SilverPlatter Information Ins.'s and DIALOG's version of Psychological Abstracts (PsycINFO and PsycLIT) and Sociological Abstracts (Sociofile and Sociological Abstracts). Results confirm that, though the databases may be similar, significant differences do exist. Specifically, online searching gives a more consistent or predictable response time and yields greater currency, consistency and coverage
Object
PsycINFO
PsycLIT
Sociological Abstracts

Similar documents (author)

  1. Nahl, D.; Tenopir, C.: Affective and cognitive searching behavior of novice end-users of a full-text database (1996) 5.85
    5.8531733 = sum of:
      5.8531733 = sum of:
        2.2456913 = weight(author_txt:tenopir in 4281) [ClassicSimilarity], result of:
          2.2456913 = score(doc=4281,freq=1.0), product of:
            0.58911645 = queryWeight, product of:
              7.62393 = idf(docFreq=58, maxDocs=44421)
              0.07727202 = queryNorm
            3.811965 = fieldWeight in 4281, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.62393 = idf(docFreq=58, maxDocs=44421)
              0.5 = fieldNorm(doc=4281)
        3.6074822 = weight(author_txt:nahl in 4281) [ClassicSimilarity], result of:
          3.6074822 = score(doc=4281,freq=1.0), product of:
            0.8080482 = queryWeight, product of:
              1.1711649 = boost
              8.928879 = idf(docFreq=15, maxDocs=44421)
              0.07727202 = queryNorm
            4.4644394 = fieldWeight in 4281, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.928879 = idf(docFreq=15, maxDocs=44421)
              0.5 = fieldNorm(doc=4281)
    
  2. Tenopir, C.; Nahl-Jakobovits, D.; Howard, D.L.: Strategies and assessments online : novices' experience (1991) 4.39
    4.38988 = sum of:
      4.38988 = sum of:
        1.6842685 = weight(author_txt:tenopir in 1987) [ClassicSimilarity], result of:
          1.6842685 = score(doc=1987,freq=1.0), product of:
            0.58911645 = queryWeight, product of:
              7.62393 = idf(docFreq=58, maxDocs=44421)
              0.07727202 = queryNorm
            2.8589737 = fieldWeight in 1987, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.62393 = idf(docFreq=58, maxDocs=44421)
              0.375 = fieldNorm(doc=1987)
        2.7056117 = weight(author_txt:nahl in 1987) [ClassicSimilarity], result of:
          2.7056117 = score(doc=1987,freq=1.0), product of:
            0.8080482 = queryWeight, product of:
              1.1711649 = boost
              8.928879 = idf(docFreq=15, maxDocs=44421)
              0.07727202 = queryNorm
            3.3483295 = fieldWeight in 1987, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.928879 = idf(docFreq=15, maxDocs=44421)
              0.375 = fieldNorm(doc=1987)
    
  3. Nahl, D.: ¬The user-centered revolution : 1970-1995 (1998) 2.25
    2.2546763 = sum of:
      2.2546763 = product of:
        4.5093527 = sum of:
          4.5093527 = weight(author_txt:nahl in 723) [ClassicSimilarity], result of:
            4.5093527 = score(doc=723,freq=1.0), product of:
              0.8080482 = queryWeight, product of:
                1.1711649 = boost
                8.928879 = idf(docFreq=15, maxDocs=44421)
                0.07727202 = queryNorm
              5.5805492 = fieldWeight in 723, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.928879 = idf(docFreq=15, maxDocs=44421)
                0.625 = fieldNorm(doc=723)
        0.5 = coord(1/2)
    
  4. Nahl, D.: Information counseling inventory of affective and cognitive reactions while learning the Internet (1997) 2.25
    2.2546763 = sum of:
      2.2546763 = product of:
        4.5093527 = sum of:
          4.5093527 = weight(author_txt:nahl in 1528) [ClassicSimilarity], result of:
            4.5093527 = score(doc=1528,freq=1.0), product of:
              0.8080482 = queryWeight, product of:
                1.1711649 = boost
                8.928879 = idf(docFreq=15, maxDocs=44421)
                0.07727202 = queryNorm
              5.5805492 = fieldWeight in 1528, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.928879 = idf(docFreq=15, maxDocs=44421)
                0.625 = fieldNorm(doc=1528)
        0.5 = coord(1/2)
    
  5. Nahl, D.: Learning the Internet and the structure of information behavior (1998) 2.25
    2.2546763 = sum of:
      2.2546763 = product of:
        4.5093527 = sum of:
          4.5093527 = weight(author_txt:nahl in 3023) [ClassicSimilarity], result of:
            4.5093527 = score(doc=3023,freq=1.0), product of:
              0.8080482 = queryWeight, product of:
                1.1711649 = boost
                8.928879 = idf(docFreq=15, maxDocs=44421)
                0.07727202 = queryNorm
              5.5805492 = fieldWeight in 3023, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.928879 = idf(docFreq=15, maxDocs=44421)
                0.625 = fieldNorm(doc=3023)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Jascó, P.: Information Science Abstracts (1997) 0.19
    0.18793453 = sum of:
      0.18793453 = product of:
        0.78306055 = sum of:
          0.06817124 = weight(abstract_txt:cost in 1658) [ClassicSimilarity], result of:
            0.06817124 = score(doc=1658,freq=1.0), product of:
              0.10852782 = queryWeight, product of:
                5.743043 = idf(docFreq=386, maxDocs=44421)
                0.018897267 = queryNorm
              0.62814534 = fieldWeight in 1658, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.743043 = idf(docFreq=386, maxDocs=44421)
                0.109375 = fieldNorm(doc=1658)
          0.087882936 = weight(abstract_txt:versions in 1658) [ClassicSimilarity], result of:
            0.087882936 = score(doc=1658,freq=1.0), product of:
              0.12855135 = queryWeight, product of:
                1.088348 = boost
                6.250429 = idf(docFreq=232, maxDocs=44421)
                0.018897267 = queryNorm
              0.6836407 = fieldWeight in 1658, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.250429 = idf(docFreq=232, maxDocs=44421)
                0.109375 = fieldNorm(doc=1658)
          0.1675397 = weight(abstract_txt:silverplatter in 1658) [ClassicSimilarity], result of:
            0.1675397 = score(doc=1658,freq=1.0), product of:
              0.19764481 = queryWeight, product of:
                1.3494978 = boost
                7.750224 = idf(docFreq=51, maxDocs=44421)
                0.018897267 = queryNorm
              0.84768075 = fieldWeight in 1658, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.750224 = idf(docFreq=51, maxDocs=44421)
                0.109375 = fieldNorm(doc=1658)
          0.075141616 = weight(abstract_txt:online in 1658) [ClassicSimilarity], result of:
            0.075141616 = score(doc=1658,freq=2.0), product of:
              0.13256364 = queryWeight, product of:
                1.9142661 = boost
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.018897267 = queryNorm
              0.56683433 = fieldWeight in 1658, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.109375 = fieldNorm(doc=1658)
          0.15555398 = weight(abstract_txt:coverage in 1658) [ClassicSimilarity], result of:
            0.15555398 = score(doc=1658,freq=1.0), product of:
              0.23699418 = queryWeight, product of:
                2.0898414 = boost
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.018897267 = queryNorm
              0.65636206 = fieldWeight in 1658, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.109375 = fieldNorm(doc=1658)
          0.22877106 = weight(abstract_txt:abstracts in 1658) [ClassicSimilarity], result of:
            0.22877106 = score(doc=1658,freq=1.0), product of:
              0.35084456 = queryWeight, product of:
                3.114207 = boost
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.018897267 = queryNorm
              0.6520582 = fieldWeight in 1658, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.109375 = fieldNorm(doc=1658)
        0.24 = coord(6/25)
    
  2. Reid, B.J.: Information and library literature on CD-ROM : a review article (1993) 0.15
    0.15130869 = sum of:
      0.15130869 = product of:
        0.6304529 = sum of:
          0.047802016 = weight(abstract_txt:though in 870) [ClassicSimilarity], result of:
            0.047802016 = score(doc=870,freq=1.0), product of:
              0.12439314 = queryWeight, product of:
                1.0706011 = boost
                6.148508 = idf(docFreq=257, maxDocs=44421)
                0.018897267 = queryNorm
              0.38428175 = fieldWeight in 870, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.148508 = idf(docFreq=257, maxDocs=44421)
                0.0625 = fieldNorm(doc=870)
          0.1271977 = weight(abstract_txt:currency in 870) [ClassicSimilarity], result of:
            0.1271977 = score(doc=870,freq=2.0), product of:
              0.18958697 = queryWeight, product of:
                1.3217025 = boost
                7.590594 = idf(docFreq=60, maxDocs=44421)
                0.018897267 = queryNorm
              0.67092 = fieldWeight in 870, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.590594 = idf(docFreq=60, maxDocs=44421)
                0.0625 = fieldNorm(doc=870)
          0.09573697 = weight(abstract_txt:silverplatter in 870) [ClassicSimilarity], result of:
            0.09573697 = score(doc=870,freq=1.0), product of:
              0.19764481 = queryWeight, product of:
                1.3494978 = boost
                7.750224 = idf(docFreq=51, maxDocs=44421)
                0.018897267 = queryNorm
              0.484389 = fieldWeight in 870, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.750224 = idf(docFreq=51, maxDocs=44421)
                0.0625 = fieldNorm(doc=870)
          0.1539585 = weight(abstract_txt:coverage in 870) [ClassicSimilarity], result of:
            0.1539585 = score(doc=870,freq=3.0), product of:
              0.23699418 = queryWeight, product of:
                2.0898414 = boost
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.018897267 = queryNorm
              0.6496299 = fieldWeight in 870, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.0625 = fieldNorm(doc=870)
          0.07503135 = weight(abstract_txt:databases in 870) [ClassicSimilarity], result of:
            0.07503135 = score(doc=870,freq=2.0), product of:
              0.19232005 = queryWeight, product of:
                2.3056977 = boost
                4.413907 = idf(docFreq=1461, maxDocs=44421)
                0.018897267 = queryNorm
              0.39013794 = fieldWeight in 870, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.413907 = idf(docFreq=1461, maxDocs=44421)
                0.0625 = fieldNorm(doc=870)
          0.13072632 = weight(abstract_txt:abstracts in 870) [ClassicSimilarity], result of:
            0.13072632 = score(doc=870,freq=1.0), product of:
              0.35084456 = queryWeight, product of:
                3.114207 = boost
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.018897267 = queryNorm
              0.37260467 = fieldWeight in 870, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.0625 = fieldNorm(doc=870)
        0.24 = coord(6/25)
    
  3. Wheatley, A.; Armstrong, C.J.: Metadata, recall, and abstracts : can abstracts ever be reliable indicators of document value? (1997) 0.15
    0.1470057 = sum of:
      0.1470057 = product of:
        0.7350285 = sum of:
          0.05952767 = weight(abstract_txt:consistent in 1824) [ClassicSimilarity], result of:
            0.05952767 = score(doc=1824,freq=1.0), product of:
              0.12408089 = queryWeight, product of:
                1.0692565 = boost
                6.140786 = idf(docFreq=259, maxDocs=44421)
                0.018897267 = queryNorm
              0.4797489 = fieldWeight in 1824, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.140786 = idf(docFreq=259, maxDocs=44421)
                0.078125 = fieldNorm(doc=1824)
          0.06573523 = weight(abstract_txt:online in 1824) [ClassicSimilarity], result of:
            0.06573523 = score(doc=1824,freq=3.0), product of:
              0.13256364 = queryWeight, product of:
                1.9142661 = boost
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.018897267 = queryNorm
              0.4958768 = fieldWeight in 1824, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.078125 = fieldNorm(doc=1824)
          0.11110999 = weight(abstract_txt:coverage in 1824) [ClassicSimilarity], result of:
            0.11110999 = score(doc=1824,freq=1.0), product of:
              0.23699418 = queryWeight, product of:
                2.0898414 = boost
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.018897267 = queryNorm
              0.46883002 = fieldWeight in 1824, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.078125 = fieldNorm(doc=1824)
          0.06631897 = weight(abstract_txt:databases in 1824) [ClassicSimilarity], result of:
            0.06631897 = score(doc=1824,freq=1.0), product of:
              0.19232005 = queryWeight, product of:
                2.3056977 = boost
                4.413907 = idf(docFreq=1461, maxDocs=44421)
                0.018897267 = queryNorm
              0.34483647 = fieldWeight in 1824, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.413907 = idf(docFreq=1461, maxDocs=44421)
                0.078125 = fieldNorm(doc=1824)
          0.43233666 = weight(abstract_txt:abstracts in 1824) [ClassicSimilarity], result of:
            0.43233666 = score(doc=1824,freq=7.0), product of:
              0.35084456 = queryWeight, product of:
                3.114207 = boost
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.018897267 = queryNorm
              1.232274 = fieldWeight in 1824, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.078125 = fieldNorm(doc=1824)
        0.2 = coord(5/25)
    
  4. Wilson, T.D.: EQUIP: a European survey of quality criteria for the evaluation of databases (1998) 0.12
    0.124739885 = sum of:
      0.124739885 = product of:
        0.6236994 = sum of:
          0.09339466 = weight(abstract_txt:consistency in 4285) [ClassicSimilarity], result of:
            0.09339466 = score(doc=4285,freq=1.0), product of:
              0.13387156 = queryWeight, product of:
                1.1106408 = boost
                6.3784575 = idf(docFreq=204, maxDocs=44421)
                0.018897267 = queryNorm
              0.6976438 = fieldWeight in 4285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.3784575 = idf(docFreq=204, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
          0.053133156 = weight(abstract_txt:online in 4285) [ClassicSimilarity], result of:
            0.053133156 = score(doc=4285,freq=1.0), product of:
              0.13256364 = queryWeight, product of:
                1.9142661 = boost
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.018897267 = queryNorm
              0.40081245 = fieldWeight in 4285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
          0.15555398 = weight(abstract_txt:coverage in 4285) [ClassicSimilarity], result of:
            0.15555398 = score(doc=4285,freq=1.0), product of:
              0.23699418 = queryWeight, product of:
                2.0898414 = boost
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.018897267 = queryNorm
              0.65636206 = fieldWeight in 4285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
          0.092846565 = weight(abstract_txt:databases in 4285) [ClassicSimilarity], result of:
            0.092846565 = score(doc=4285,freq=1.0), product of:
              0.19232005 = queryWeight, product of:
                2.3056977 = boost
                4.413907 = idf(docFreq=1461, maxDocs=44421)
                0.018897267 = queryNorm
              0.4827711 = fieldWeight in 4285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.413907 = idf(docFreq=1461, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
          0.22877106 = weight(abstract_txt:abstracts in 4285) [ClassicSimilarity], result of:
            0.22877106 = score(doc=4285,freq=1.0), product of:
              0.35084456 = queryWeight, product of:
                3.114207 = boost
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.018897267 = queryNorm
              0.6520582 = fieldWeight in 4285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
        0.2 = coord(5/25)
    
  5. Jascó, P.: Content evaluation of databases (1997) 0.11
    0.11493281 = sum of:
      0.11493281 = product of:
        0.47888672 = sum of:
          0.038954996 = weight(abstract_txt:cost in 3299) [ClassicSimilarity], result of:
            0.038954996 = score(doc=3299,freq=1.0), product of:
              0.10852782 = queryWeight, product of:
                5.743043 = idf(docFreq=386, maxDocs=44421)
                0.018897267 = queryNorm
              0.35894018 = fieldWeight in 3299, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.743043 = idf(docFreq=386, maxDocs=44421)
                0.0625 = fieldNorm(doc=3299)
          0.09243674 = weight(abstract_txt:consistency in 3299) [ClassicSimilarity], result of:
            0.09243674 = score(doc=3299,freq=3.0), product of:
              0.13387156 = queryWeight, product of:
                1.1106408 = boost
                6.3784575 = idf(docFreq=204, maxDocs=44421)
                0.018897267 = queryNorm
              0.6904883 = fieldWeight in 3299, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.3784575 = idf(docFreq=204, maxDocs=44421)
                0.0625 = fieldNorm(doc=3299)
          0.1271977 = weight(abstract_txt:currency in 3299) [ClassicSimilarity], result of:
            0.1271977 = score(doc=3299,freq=2.0), product of:
              0.18958697 = queryWeight, product of:
                1.3217025 = boost
                7.590594 = idf(docFreq=60, maxDocs=44421)
                0.018897267 = queryNorm
              0.67092 = fieldWeight in 3299, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.590594 = idf(docFreq=60, maxDocs=44421)
                0.0625 = fieldNorm(doc=3299)
          0.04153553 = weight(abstract_txt:time in 3299) [ClassicSimilarity], result of:
            0.04153553 = score(doc=3299,freq=2.0), product of:
              0.113269284 = queryWeight, product of:
                1.444776 = boost
                4.1487055 = idf(docFreq=1905, maxDocs=44421)
                0.018897267 = queryNorm
              0.36669722 = fieldWeight in 3299, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1487055 = idf(docFreq=1905, maxDocs=44421)
                0.0625 = fieldNorm(doc=3299)
          0.1257066 = weight(abstract_txt:coverage in 3299) [ClassicSimilarity], result of:
            0.1257066 = score(doc=3299,freq=2.0), product of:
              0.23699418 = queryWeight, product of:
                2.0898414 = boost
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.018897267 = queryNorm
              0.5304206 = fieldWeight in 3299, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.0625 = fieldNorm(doc=3299)
          0.053055175 = weight(abstract_txt:databases in 3299) [ClassicSimilarity], result of:
            0.053055175 = score(doc=3299,freq=1.0), product of:
              0.19232005 = queryWeight, product of:
                2.3056977 = boost
                4.413907 = idf(docFreq=1461, maxDocs=44421)
                0.018897267 = queryNorm
              0.2758692 = fieldWeight in 3299, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.413907 = idf(docFreq=1461, maxDocs=44421)
                0.0625 = fieldNorm(doc=3299)
        0.24 = coord(6/25)