Document (#3636)

Author
Berry, J.
Title
CD-ROM: the medium for the moment
Source
Library journal. 117(1992) no.2, S.45-47
Year
1992
Abstract
Reports on a survey of CD-ROM and online services in US libraries in 1991 to which 608 libraries responded. Public libraries expect to spend more on CD-ROM services than do academic and special libraries. 57% of CD-ROM collectors carry both print and CD-ROM versions. SilverPlatter is the top vendor with 19.2% market share. Accuracy/authority is the most important criterion for selection. Software incompatibility is the main barrier to networling. Special libraries spend most on online services but they are replacing online data bases that are used by the public
Theme
Informationsmittel

Similar documents (author)

  1. Courtois, M.P.; Berry, M.W.: Results ranking in Web search engines (1999) 4.60
    4.5984483 = sum of:
      4.5984483 = weight(author_txt:berry in 3792) [ClassicSimilarity], result of:
        4.5984483 = fieldWeight in 3792, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.196897 = idf(docFreq=11, maxDocs=43556)
          0.5 = fieldNorm(doc=3792)
    
  2. Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (1999) 4.60
    4.5984483 = sum of:
      4.5984483 = weight(author_txt:berry in 775) [ClassicSimilarity], result of:
        4.5984483 = fieldWeight in 775, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.196897 = idf(docFreq=11, maxDocs=43556)
          0.5 = fieldNorm(doc=775)
    
  3. Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (2005) 4.60
    4.5984483 = sum of:
      4.5984483 = weight(author_txt:berry in 2005) [ClassicSimilarity], result of:
        4.5984483 = fieldWeight in 2005, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.196897 = idf(docFreq=11, maxDocs=43556)
          0.5 = fieldNorm(doc=2005)
    
  4. Martin, D.I.; Berry, M.W.: Latent Semantic Indexing (2009) 4.60
    4.5984483 = sum of:
      4.5984483 = weight(author_txt:berry in 832) [ClassicSimilarity], result of:
        4.5984483 = fieldWeight in 832, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.196897 = idf(docFreq=11, maxDocs=43556)
          0.5 = fieldNorm(doc=832)
    
  5. Earle, R.E.; Berry, R.; Nichols, M.C.: Indexing online information (1996) 3.45
    3.4488363 = sum of:
      3.4488363 = weight(author_txt:berry in 5192) [ClassicSimilarity], result of:
        3.4488363 = fieldWeight in 5192, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.196897 = idf(docFreq=11, maxDocs=43556)
          0.375 = fieldNorm(doc=5192)
    

Similar documents (content)

  1. Smith, G.: Annual business information resources survey, 1998 (1998) 0.16
    0.15717547 = sum of:
      0.15717547 = product of:
        0.6548978 = sum of:
          0.03344561 = weight(abstract_txt:most in 3491) [ClassicSimilarity], result of:
            0.03344561 = score(doc=3491,freq=1.0), product of:
              0.10834812 = queryWeight, product of:
                1.3628359 = boost
                3.9511886 = idf(docFreq=2276, maxDocs=43556)
                0.020121023 = queryNorm
              0.3086866 = fieldWeight in 3491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9511886 = idf(docFreq=2276, maxDocs=43556)
                0.078125 = fieldNorm(doc=3491)
          0.05342327 = weight(abstract_txt:public in 3491) [ClassicSimilarity], result of:
            0.05342327 = score(doc=3491,freq=1.0), product of:
              0.14805244 = queryWeight, product of:
                1.5930912 = boost
                4.6187544 = idf(docFreq=1167, maxDocs=43556)
                0.020121023 = queryNorm
              0.3608402 = fieldWeight in 3491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6187544 = idf(docFreq=1167, maxDocs=43556)
                0.078125 = fieldNorm(doc=3491)
          0.040118605 = weight(abstract_txt:online in 3491) [ClassicSimilarity], result of:
            0.040118605 = score(doc=3491,freq=1.0), product of:
              0.14001983 = queryWeight, product of:
                1.8974628 = boost
                3.667467 = idf(docFreq=3023, maxDocs=43556)
                0.020121023 = queryNorm
              0.28652087 = fieldWeight in 3491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.667467 = idf(docFreq=3023, maxDocs=43556)
                0.078125 = fieldNorm(doc=3491)
          0.0845486 = weight(abstract_txt:services in 3491) [ClassicSimilarity], result of:
            0.0845486 = score(doc=3491,freq=2.0), product of:
              0.18267816 = queryWeight, product of:
                2.1673138 = boost
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.020121023 = queryNorm
              0.46282816 = fieldWeight in 3491, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.078125 = fieldNorm(doc=3491)
          0.27950734 = weight(abstract_txt:spend in 3491) [ClassicSimilarity], result of:
            0.27950734 = score(doc=3491,freq=1.0), product of:
              0.44619435 = queryWeight, product of:
                2.7656353 = boost
                8.018241 = idf(docFreq=38, maxDocs=43556)
                0.020121023 = queryNorm
              0.6264251 = fieldWeight in 3491, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.018241 = idf(docFreq=38, maxDocs=43556)
                0.078125 = fieldNorm(doc=3491)
          0.16385442 = weight(abstract_txt:libraries in 3491) [ClassicSimilarity], result of:
            0.16385442 = score(doc=3491,freq=5.0), product of:
              0.24806036 = queryWeight, product of:
                3.2604802 = boost
                3.781166 = idf(docFreq=2698, maxDocs=43556)
                0.020121023 = queryNorm
              0.66054255 = fieldWeight in 3491, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.781166 = idf(docFreq=2698, maxDocs=43556)
                0.078125 = fieldNorm(doc=3491)
        0.24 = coord(6/25)
    
  2. Blake, N.: Enquiry statistics : an analysis of enquiries asked at selected public and special libraries in the UK (1995) 0.12
    0.119634785 = sum of:
      0.119634785 = product of:
        0.5981739 = sum of:
          0.047299236 = weight(abstract_txt:most in 2450) [ClassicSimilarity], result of:
            0.047299236 = score(doc=2450,freq=2.0), product of:
              0.10834812 = queryWeight, product of:
                1.3628359 = boost
                3.9511886 = idf(docFreq=2276, maxDocs=43556)
                0.020121023 = queryNorm
              0.43654877 = fieldWeight in 2450, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9511886 = idf(docFreq=2276, maxDocs=43556)
                0.078125 = fieldNorm(doc=2450)
          0.13085975 = weight(abstract_txt:public in 2450) [ClassicSimilarity], result of:
            0.13085975 = score(doc=2450,freq=6.0), product of:
              0.14805244 = queryWeight, product of:
                1.5930912 = boost
                4.6187544 = idf(docFreq=1167, maxDocs=43556)
                0.020121023 = queryNorm
              0.88387436 = fieldWeight in 2450, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.6187544 = idf(docFreq=1167, maxDocs=43556)
                0.078125 = fieldNorm(doc=2450)
          0.11563255 = weight(abstract_txt:special in 2450) [ClassicSimilarity], result of:
            0.11563255 = score(doc=2450,freq=3.0), product of:
              0.17176774 = queryWeight, product of:
                1.7159462 = boost
                4.9749403 = idf(docFreq=817, maxDocs=43556)
                0.020121023 = queryNorm
              0.6731913 = fieldWeight in 2450, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.9749403 = idf(docFreq=817, maxDocs=43556)
                0.078125 = fieldNorm(doc=2450)
          0.0845486 = weight(abstract_txt:services in 2450) [ClassicSimilarity], result of:
            0.0845486 = score(doc=2450,freq=2.0), product of:
              0.18267816 = queryWeight, product of:
                2.1673138 = boost
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.020121023 = queryNorm
              0.46282816 = fieldWeight in 2450, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.078125 = fieldNorm(doc=2450)
          0.21983378 = weight(abstract_txt:libraries in 2450) [ClassicSimilarity], result of:
            0.21983378 = score(doc=2450,freq=9.0), product of:
              0.24806036 = queryWeight, product of:
                3.2604802 = boost
                3.781166 = idf(docFreq=2698, maxDocs=43556)
                0.020121023 = queryNorm
              0.8862108 = fieldWeight in 2450, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                3.781166 = idf(docFreq=2698, maxDocs=43556)
                0.078125 = fieldNorm(doc=2450)
        0.2 = coord(5/25)
    
  3. Haslhofer, B.: Uniform SPARQL access to interlinked (digital library) sources (2007) 0.11
    0.1083806 = sum of:
      0.1083806 = product of:
        0.6773788 = sum of:
          0.40028852 = weight(abstract_txt:incompatibility in 2539) [ClassicSimilarity], result of:
            0.40028852 = score(doc=2539,freq=1.0), product of:
              0.3289178 = queryWeight, product of:
                1.679042 = boost
                9.735892 = idf(docFreq=6, maxDocs=43556)
                0.020121023 = queryNorm
              1.2169865 = fieldWeight in 2539, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.735892 = idf(docFreq=6, maxDocs=43556)
                0.125 = fieldNorm(doc=2539)
          0.06418977 = weight(abstract_txt:online in 2539) [ClassicSimilarity], result of:
            0.06418977 = score(doc=2539,freq=1.0), product of:
              0.14001983 = queryWeight, product of:
                1.8974628 = boost
                3.667467 = idf(docFreq=3023, maxDocs=43556)
                0.020121023 = queryNorm
              0.4584334 = fieldWeight in 2539, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.667467 = idf(docFreq=3023, maxDocs=43556)
                0.125 = fieldNorm(doc=2539)
          0.09565583 = weight(abstract_txt:services in 2539) [ClassicSimilarity], result of:
            0.09565583 = score(doc=2539,freq=1.0), product of:
              0.18267816 = queryWeight, product of:
                2.1673138 = boost
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.020121023 = queryNorm
              0.5236303 = fieldWeight in 2539, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.125 = fieldNorm(doc=2539)
          0.117244676 = weight(abstract_txt:libraries in 2539) [ClassicSimilarity], result of:
            0.117244676 = score(doc=2539,freq=1.0), product of:
              0.24806036 = queryWeight, product of:
                3.2604802 = boost
                3.781166 = idf(docFreq=2698, maxDocs=43556)
                0.020121023 = queryNorm
              0.47264576 = fieldWeight in 2539, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.781166 = idf(docFreq=2698, maxDocs=43556)
                0.125 = fieldNorm(doc=2539)
        0.16 = coord(4/25)
    
  4. Hattery, M.: Videotex in the US in 1991 (1991) 0.11
    0.1050197 = sum of:
      0.1050197 = product of:
        0.5250985 = sum of:
          0.0763518 = weight(abstract_txt:market in 3648) [ClassicSimilarity], result of:
            0.0763518 = score(doc=3648,freq=1.0), product of:
              0.13203141 = queryWeight, product of:
                1.0637915 = boost
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.020121023 = queryNorm
              0.5782851 = fieldWeight in 3648, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.09375 = fieldNorm(doc=3648)
          0.04013473 = weight(abstract_txt:most in 3648) [ClassicSimilarity], result of:
            0.04013473 = score(doc=3648,freq=1.0), product of:
              0.10834812 = queryWeight, product of:
                1.3628359 = boost
                3.9511886 = idf(docFreq=2276, maxDocs=43556)
                0.020121023 = queryNorm
              0.3704239 = fieldWeight in 3648, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9511886 = idf(docFreq=2276, maxDocs=43556)
                0.09375 = fieldNorm(doc=3648)
          0.20004994 = weight(abstract_txt:barrier in 3648) [ClassicSimilarity], result of:
            0.20004994 = score(doc=3648,freq=1.0), product of:
              0.2509324 = queryWeight, product of:
                1.4665478 = boost
                8.503749 = idf(docFreq=23, maxDocs=43556)
                0.020121023 = queryNorm
              0.7972264 = fieldWeight in 3648, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.503749 = idf(docFreq=23, maxDocs=43556)
                0.09375 = fieldNorm(doc=3648)
          0.048142325 = weight(abstract_txt:online in 3648) [ClassicSimilarity], result of:
            0.048142325 = score(doc=3648,freq=1.0), product of:
              0.14001983 = queryWeight, product of:
                1.8974628 = boost
                3.667467 = idf(docFreq=3023, maxDocs=43556)
                0.020121023 = queryNorm
              0.34382504 = fieldWeight in 3648, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.667467 = idf(docFreq=3023, maxDocs=43556)
                0.09375 = fieldNorm(doc=3648)
          0.1604197 = weight(abstract_txt:services in 3648) [ClassicSimilarity], result of:
            0.1604197 = score(doc=3648,freq=5.0), product of:
              0.18267816 = queryWeight, product of:
                2.1673138 = boost
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.020121023 = queryNorm
              0.87815475 = fieldWeight in 3648, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.09375 = fieldNorm(doc=3648)
        0.2 = coord(5/25)
    
  5. Liebtag, D.: Is OCLC worth the cost? (1993) 0.10
    0.10376763 = sum of:
      0.10376763 = product of:
        0.51883817 = sum of:
          0.073994 = weight(abstract_txt:medium in 7792) [ClassicSimilarity], result of:
            0.073994 = score(doc=7792,freq=1.0), product of:
              0.11667136 = queryWeight, product of:
                5.7984805 = idf(docFreq=358, maxDocs=43556)
                0.020121023 = queryNorm
              0.6342088 = fieldWeight in 7792, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7984805 = idf(docFreq=358, maxDocs=43556)
                0.109375 = fieldNorm(doc=7792)
          0.08907709 = weight(abstract_txt:market in 7792) [ClassicSimilarity], result of:
            0.08907709 = score(doc=7792,freq=1.0), product of:
              0.13203141 = queryWeight, product of:
                1.0637915 = boost
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.020121023 = queryNorm
              0.6746659 = fieldWeight in 7792, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.109375 = fieldNorm(doc=7792)
          0.16260645 = weight(abstract_txt:vendor in 7792) [ClassicSimilarity], result of:
            0.16260645 = score(doc=7792,freq=1.0), product of:
              0.19720826 = queryWeight, product of:
                1.3001109 = boost
                7.538668 = idf(docFreq=62, maxDocs=43556)
                0.020121023 = queryNorm
              0.8245418 = fieldWeight in 7792, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.538668 = idf(docFreq=62, maxDocs=43556)
                0.109375 = fieldNorm(doc=7792)
          0.07479258 = weight(abstract_txt:public in 7792) [ClassicSimilarity], result of:
            0.07479258 = score(doc=7792,freq=1.0), product of:
              0.14805244 = queryWeight, product of:
                1.5930912 = boost
                4.6187544 = idf(docFreq=1167, maxDocs=43556)
                0.020121023 = queryNorm
              0.50517625 = fieldWeight in 7792, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6187544 = idf(docFreq=1167, maxDocs=43556)
                0.109375 = fieldNorm(doc=7792)
          0.11836804 = weight(abstract_txt:services in 7792) [ClassicSimilarity], result of:
            0.11836804 = score(doc=7792,freq=2.0), product of:
              0.18267816 = queryWeight, product of:
                2.1673138 = boost
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.020121023 = queryNorm
              0.6479594 = fieldWeight in 7792, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1890426 = idf(docFreq=1794, maxDocs=43556)
                0.109375 = fieldNorm(doc=7792)
        0.2 = coord(5/25)