Document (#5451)

Author
Katritzky, A.R.
Cato, S.J.
Deyrup, J.A.
Title
Comparison of the scope, timeliness, and quality of chemical abstracts from VINITI and CAS
Source
Journal of information science. 19(1993) no.3, S.199-210
Year
1993
Abstract
Reports on a comparative study of the Referativnii Zhurnal Khimiya (RZK) and Chemical Abstracts Service (CAS) abstracting services. Determines the relative extent of coverage, the relative quality and the relative timeliness of the abstracting services. Considers how other Western abstracting services supplement CAS
Field
Chemie
Object
VINITI
CAS

Similar documents (content)

  1. Wilson, T.D.: EQUIP: a European survey of quality criteria for the evaluation of databases (1998) 0.33
    0.33472288 = sum of:
      0.33472288 = product of:
        1.0041686 = sum of:
          0.04890626 = weight(abstract_txt:service in 4285) [ClassicSimilarity], result of:
            0.04890626 = score(doc=4285,freq=2.0), product of:
              0.06907987 = queryWeight, product of:
                1.6586907 = boost
                4.576989 = idf(docFreq=1241, maxDocs=44421)
                0.009099263 = queryNorm
              0.70796686 = fieldWeight in 4285, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.576989 = idf(docFreq=1241, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
          0.03483954 = weight(abstract_txt:reports in 4285) [ClassicSimilarity], result of:
            0.03483954 = score(doc=4285,freq=1.0), product of:
              0.06942248 = queryWeight, product of:
                1.6627989 = boost
                4.5883255 = idf(docFreq=1227, maxDocs=44421)
                0.009099263 = queryNorm
              0.5018481 = fieldWeight in 4285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5883255 = idf(docFreq=1227, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
          0.077944584 = weight(abstract_txt:coverage in 4285) [ClassicSimilarity], result of:
            0.077944584 = score(doc=4285,freq=1.0), product of:
              0.11875242 = queryWeight, product of:
                2.1747577 = boost
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.009099263 = 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)
          0.1251693 = weight(abstract_txt:quality in 4285) [ClassicSimilarity], result of:
            0.1251693 = score(doc=4285,freq=3.0), product of:
              0.14226127 = queryWeight, product of:
                3.3662624 = boost
                4.6444306 = idf(docFreq=1160, maxDocs=44421)
                0.009099263 = queryNorm
              0.87985516 = fieldWeight in 4285, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.6444306 = idf(docFreq=1160, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
          0.15284267 = weight(abstract_txt:abstracts in 4285) [ClassicSimilarity], result of:
            0.15284267 = score(doc=4285,freq=1.0), product of:
              0.23440036 = queryWeight, product of:
                4.3209953 = boost
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.009099263 = 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)
          0.080059625 = weight(abstract_txt:services in 4285) [ClassicSimilarity], result of:
            0.080059625 = score(doc=4285,freq=1.0), product of:
              0.1743551 = queryWeight, product of:
                4.564231 = boost
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.009099263 = queryNorm
              0.4591757 = fieldWeight in 4285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
          0.48440662 = weight(abstract_txt:timeliness in 4285) [ClassicSimilarity], result of:
            0.48440662 = score(doc=4285,freq=1.0), product of:
              0.5057492 = queryWeight, product of:
                6.347055 = boost
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.009099263 = queryNorm
              0.95780003 = fieldWeight in 4285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.109375 = fieldNorm(doc=4285)
        0.33333334 = coord(7/21)
    
  2. Search services and gateways (1992) 0.23
    0.23148844 = sum of:
      0.23148844 = product of:
        0.6944653 = sum of:
          0.0132586965 = weight(abstract_txt:from in 4290) [ClassicSimilarity], result of:
            0.0132586965 = score(doc=4290,freq=6.0), product of:
              0.025108496 = queryWeight, product of:
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.009099263 = queryNorm
              0.5280562 = fieldWeight in 4290, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.078125 = fieldNorm(doc=4290)
          0.03493304 = weight(abstract_txt:service in 4290) [ClassicSimilarity], result of:
            0.03493304 = score(doc=4290,freq=2.0), product of:
              0.06907987 = queryWeight, product of:
                1.6586907 = boost
                4.576989 = idf(docFreq=1241, maxDocs=44421)
                0.009099263 = queryNorm
              0.50569063 = fieldWeight in 4290, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.576989 = idf(docFreq=1241, maxDocs=44421)
                0.078125 = fieldNorm(doc=4290)
          0.024885386 = weight(abstract_txt:reports in 4290) [ClassicSimilarity], result of:
            0.024885386 = score(doc=4290,freq=1.0), product of:
              0.06942248 = queryWeight, product of:
                1.6627989 = boost
                4.5883255 = idf(docFreq=1227, maxDocs=44421)
                0.009099263 = queryNorm
              0.35846293 = fieldWeight in 4290, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5883255 = idf(docFreq=1227, maxDocs=44421)
                0.078125 = fieldNorm(doc=4290)
          0.08140237 = weight(abstract_txt:western in 4290) [ClassicSimilarity], result of:
            0.08140237 = score(doc=4290,freq=1.0), product of:
              0.15297787 = queryWeight, product of:
                2.4683342 = boost
                6.8111186 = idf(docFreq=132, maxDocs=44421)
                0.009099263 = queryNorm
              0.5321186 = fieldWeight in 4290, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8111186 = idf(docFreq=132, maxDocs=44421)
                0.078125 = fieldNorm(doc=4290)
          0.1105458 = weight(abstract_txt:supplement in 4290) [ClassicSimilarity], result of:
            0.1105458 = score(doc=4290,freq=1.0), product of:
              0.18759966 = queryWeight, product of:
                2.7334156 = boost
                7.5425844 = idf(docFreq=63, maxDocs=44421)
                0.009099263 = queryNorm
              0.5892644 = fieldWeight in 4290, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5425844 = idf(docFreq=63, maxDocs=44421)
                0.078125 = fieldNorm(doc=4290)
          0.109173335 = weight(abstract_txt:abstracts in 4290) [ClassicSimilarity], result of:
            0.109173335 = score(doc=4290,freq=1.0), product of:
              0.23440036 = queryWeight, product of:
                4.3209953 = boost
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.009099263 = queryNorm
              0.46575582 = fieldWeight in 4290, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.078125 = fieldNorm(doc=4290)
          0.32026666 = weight(abstract_txt:chemical in 4290) [ClassicSimilarity], result of:
            0.32026666 = score(doc=4290,freq=3.0), product of:
              0.33305398 = queryWeight, product of:
                5.150649 = boost
                7.1063476 = idf(docFreq=98, maxDocs=44421)
                0.009099263 = queryNorm
              0.96160585 = fieldWeight in 4290, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.1063476 = idf(docFreq=98, maxDocs=44421)
                0.078125 = fieldNorm(doc=4290)
        0.33333334 = coord(7/21)
    
  3. Cross, C.; Oppenheim, C.: ¬A genre analysis of scientific abstracts (2006) 0.23
    0.22822079 = sum of:
      0.22822079 = product of:
        0.68466234 = sum of:
          0.007577976 = weight(abstract_txt:from in 603) [ClassicSimilarity], result of:
            0.007577976 = score(doc=603,freq=4.0), product of:
              0.025108496 = queryWeight, product of:
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.009099263 = queryNorm
              0.30180925 = fieldWeight in 603, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.0546875 = fieldNorm(doc=603)
          0.010158802 = weight(abstract_txt:study in 603) [ClassicSimilarity], result of:
            0.010158802 = score(doc=603,freq=2.0), product of:
              0.038461264 = queryWeight, product of:
                1.2376602 = boost
                3.415198 = idf(docFreq=3968, maxDocs=44421)
                0.009099263 = queryNorm
              0.26413074 = fieldWeight in 603, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.415198 = idf(docFreq=3968, maxDocs=44421)
                0.0546875 = fieldNorm(doc=603)
          0.024635276 = weight(abstract_txt:reports in 603) [ClassicSimilarity], result of:
            0.024635276 = score(doc=603,freq=2.0), product of:
              0.06942248 = queryWeight, product of:
                1.6627989 = boost
                4.5883255 = idf(docFreq=1227, maxDocs=44421)
                0.009099263 = queryNorm
              0.3548602 = fieldWeight in 603, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.5883255 = idf(docFreq=1227, maxDocs=44421)
                0.0546875 = fieldNorm(doc=603)
          0.036133263 = weight(abstract_txt:quality in 603) [ClassicSimilarity], result of:
            0.036133263 = score(doc=603,freq=1.0), product of:
              0.14226127 = queryWeight, product of:
                3.3662624 = boost
                4.6444306 = idf(docFreq=1160, maxDocs=44421)
                0.009099263 = queryNorm
              0.2539923 = fieldWeight in 603, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6444306 = idf(docFreq=1160, maxDocs=44421)
                0.0546875 = fieldNorm(doc=603)
          0.25346088 = weight(abstract_txt:abstracts in 603) [ClassicSimilarity], result of:
            0.25346088 = score(doc=603,freq=11.0), product of:
              0.23440036 = queryWeight, product of:
                4.3209953 = boost
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.009099263 = queryNorm
              1.0813161 = fieldWeight in 603, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.0546875 = fieldNorm(doc=603)
          0.056610707 = weight(abstract_txt:services in 603) [ClassicSimilarity], result of:
            0.056610707 = score(doc=603,freq=2.0), product of:
              0.1743551 = queryWeight, product of:
                4.564231 = boost
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.009099263 = queryNorm
              0.32468626 = fieldWeight in 603, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.0546875 = fieldNorm(doc=603)
          0.2960854 = weight(abstract_txt:abstracting in 603) [ClassicSimilarity], result of:
            0.2960854 = score(doc=603,freq=3.0), product of:
              0.4589336 = queryWeight, product of:
                7.405002 = boost
                6.8111186 = idf(docFreq=132, maxDocs=44421)
                0.009099263 = queryNorm
              0.64515954 = fieldWeight in 603, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.8111186 = idf(docFreq=132, maxDocs=44421)
                0.0546875 = fieldNorm(doc=603)
        0.33333334 = coord(7/21)
    
  4. Tenopir, C.; Jascó, P.: Quality of abstracts (1993) 0.20
    0.2025742 = sum of:
      0.2025742 = product of:
        0.70900965 = sum of:
          0.0064954082 = weight(abstract_txt:from in 5025) [ClassicSimilarity], result of:
            0.0064954082 = score(doc=5025,freq=1.0), product of:
              0.025108496 = queryWeight, product of:
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.009099263 = queryNorm
              0.25869364 = fieldWeight in 5025, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.759399 = idf(docFreq=7646, maxDocs=44421)
                0.09375 = fieldNorm(doc=5025)
          0.013467388 = weight(abstract_txt:other in 5025) [ClassicSimilarity], result of:
            0.013467388 = score(doc=5025,freq=1.0), product of:
              0.04082617 = queryWeight, product of:
                1.2751433 = boost
                3.5186288 = idf(docFreq=3578, maxDocs=44421)
                0.009099263 = queryNorm
              0.32987145 = fieldWeight in 5025, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5186288 = idf(docFreq=3578, maxDocs=44421)
                0.09375 = fieldNorm(doc=5025)
          0.04111281 = weight(abstract_txt:considers in 5025) [ClassicSimilarity], result of:
            0.04111281 = score(doc=5025,freq=1.0), product of:
              0.085914776 = queryWeight, product of:
                1.8497949 = boost
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.009099263 = queryNorm
              0.47853017 = fieldWeight in 5025, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.09375 = fieldNorm(doc=5025)
          0.061942745 = weight(abstract_txt:quality in 5025) [ClassicSimilarity], result of:
            0.061942745 = score(doc=5025,freq=1.0), product of:
              0.14226127 = queryWeight, product of:
                3.3662624 = boost
                4.6444306 = idf(docFreq=1160, maxDocs=44421)
                0.009099263 = queryNorm
              0.4354154 = fieldWeight in 5025, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6444306 = idf(docFreq=1160, maxDocs=44421)
                0.09375 = fieldNorm(doc=5025)
          0.2929428 = weight(abstract_txt:abstracts in 5025) [ClassicSimilarity], result of:
            0.2929428 = score(doc=5025,freq=5.0), product of:
              0.23440036 = queryWeight, product of:
                4.3209953 = boost
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.009099263 = queryNorm
              1.2497541 = fieldWeight in 5025, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.9616747 = idf(docFreq=310, maxDocs=44421)
                0.09375 = fieldNorm(doc=5025)
          0.29304853 = weight(abstract_txt:abstracting in 5025) [ClassicSimilarity], result of:
            0.29304853 = score(doc=5025,freq=1.0), product of:
              0.4589336 = queryWeight, product of:
                7.405002 = boost
                6.8111186 = idf(docFreq=132, maxDocs=44421)
                0.009099263 = queryNorm
              0.63854235 = fieldWeight in 5025, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8111186 = idf(docFreq=132, maxDocs=44421)
                0.09375 = fieldNorm(doc=5025)
        0.2857143 = coord(6/21)
    
  5. Rowley, J.: ¬The changing face of current awareness services (1998) 0.20
    0.19796327 = sum of:
      0.19796327 = product of:
        0.8314457 = sum of:
          0.03426068 = weight(abstract_txt:considers in 4043) [ClassicSimilarity], result of:
            0.03426068 = score(doc=4043,freq=1.0), product of:
              0.085914776 = queryWeight, product of:
                1.8497949 = boost
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.009099263 = queryNorm
              0.39877516 = fieldWeight in 4043, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.104322 = idf(docFreq=732, maxDocs=44421)
                0.078125 = fieldNorm(doc=4043)
          0.0556747 = weight(abstract_txt:coverage in 4043) [ClassicSimilarity], result of:
            0.0556747 = score(doc=4043,freq=1.0), product of:
              0.11875242 = queryWeight, product of:
                2.1747577 = boost
                6.0010242 = idf(docFreq=298, maxDocs=44421)
                0.009099263 = queryNorm
              0.46883002 = fieldWeight in 4043, 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=4043)
          0.15129846 = weight(abstract_txt:services in 4043) [ClassicSimilarity], result of:
            0.15129846 = score(doc=4043,freq=7.0), product of:
              0.1743551 = queryWeight, product of:
                4.564231 = boost
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.009099263 = queryNorm
              0.8677605 = fieldWeight in 4043, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.078125 = fieldNorm(doc=4043)
          0.3460047 = weight(abstract_txt:timeliness in 4043) [ClassicSimilarity], result of:
            0.3460047 = score(doc=4043,freq=1.0), product of:
              0.5057492 = queryWeight, product of:
                6.347055 = boost
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.009099263 = queryNorm
              0.6841428 = fieldWeight in 4043, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.757029 = idf(docFreq=18, maxDocs=44421)
                0.078125 = fieldNorm(doc=4043)
          0.24420711 = weight(abstract_txt:abstracting in 4043) [ClassicSimilarity], result of:
            0.24420711 = score(doc=4043,freq=1.0), product of:
              0.4589336 = queryWeight, product of:
                7.405002 = boost
                6.8111186 = idf(docFreq=132, maxDocs=44421)
                0.009099263 = queryNorm
              0.5321186 = fieldWeight in 4043, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8111186 = idf(docFreq=132, maxDocs=44421)
                0.078125 = fieldNorm(doc=4043)
        0.23809524 = coord(5/21)