Document (#7656)

Author
Pratt, G.F.
Title
¬A brief hitchhiker's guide to MEDLINE
Source
Database. 17(1994) no.1, S.41-46
Year
1994
Abstract
MEDLINE is one of the most widely used databases in the world. During 1992, there were over 4.5 million logins at the National Library of Medicine alone. Currently containing over 7.4 million records, almost 3.700 journals are endlessly indexed to prduce weekly updates. Either as searchers or intermediaries, many information professionals get a daily dose of MEDLINE and the accompanying MeSH terminology. But as information professionals, how much do we really know about MEDLINE? For example: When we attach a particular subheading to a MeSH term, what slice of the MEDLINE pie are we selecting, one with 6.000 or 600.000 records? It we search topics using age-related check tags, how does this influence search results? What percentage of MEDLINE is related to nursing topics? Would another database more appropriate? If a client wants only citations to reviews articles, what portion of the database is eliminated?
Field
Medizin
Object
MEDLINE

Similar documents (author)

  1. Pratt, A.D.: Information and emmorphosis : an attempt at definition (1980) 5.87
    5.874302 = sum of:
      5.874302 = weight(author_txt:pratt in 1315) [ClassicSimilarity], result of:
        5.874302 = fieldWeight in 1315, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.625 = fieldNorm(doc=1315)
    
  2. Pratt, A.D.: ¬The information of the image : a model of the communication process (1977) 5.87
    5.874302 = sum of:
      5.874302 = weight(author_txt:pratt in 6062) [ClassicSimilarity], result of:
        5.874302 = fieldWeight in 6062, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.625 = fieldNorm(doc=6062)
    
  3. Pratt, A.D.: Letters to the editor: Information concepts (1978) 5.87
    5.874302 = sum of:
      5.874302 = weight(author_txt:pratt in 7749) [ClassicSimilarity], result of:
        5.874302 = fieldWeight in 7749, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.625 = fieldNorm(doc=7749)
    
  4. Pratt, A.D.: Information of the image (1998) 5.87
    5.874302 = sum of:
      5.874302 = weight(author_txt:pratt in 6747) [ClassicSimilarity], result of:
        5.874302 = fieldWeight in 6747, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.625 = fieldNorm(doc=6747)
    
  5. Pratt, T.C.: ¬A bibliometric for the publication of inconsequential work (2015) 5.87
    5.874302 = sum of:
      5.874302 = weight(author_txt:pratt in 3225) [ClassicSimilarity], result of:
        5.874302 = fieldWeight in 3225, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.625 = fieldNorm(doc=3225)
    

Similar documents (content)

  1. Ralston, N.M.: Controlled vocabularies for MEDLARS databases (1995) 0.22
    0.21524888 = sum of:
      0.21524888 = product of:
        0.768746 = sum of:
          0.018133102 = weight(abstract_txt:search in 2708) [ClassicSimilarity], result of:
            0.018133102 = score(doc=2708,freq=1.0), product of:
              0.06351005 = queryWeight, product of:
                1.0426635 = boost
                3.654598 = idf(docFreq=3123, maxDocs=44421)
                0.016667048 = queryNorm
              0.28551546 = fieldWeight in 2708, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.654598 = idf(docFreq=3123, maxDocs=44421)
                0.078125 = fieldNorm(doc=2708)
          0.027487531 = weight(abstract_txt:related in 2708) [ClassicSimilarity], result of:
            0.027487531 = score(doc=2708,freq=1.0), product of:
              0.083807886 = queryWeight, product of:
                1.1977478 = boost
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.016667048 = queryNorm
              0.32798263 = fieldWeight in 2708, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.078125 = fieldNorm(doc=2708)
          0.029156625 = weight(abstract_txt:database in 2708) [ClassicSimilarity], result of:
            0.029156625 = score(doc=2708,freq=1.0), product of:
              0.08716709 = queryWeight, product of:
                1.2215161 = boost
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.016667048 = queryNorm
              0.3344912 = fieldWeight in 2708, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.078125 = fieldNorm(doc=2708)
          0.048665244 = weight(abstract_txt:topics in 2708) [ClassicSimilarity], result of:
            0.048665244 = score(doc=2708,freq=1.0), product of:
              0.122651726 = queryWeight, product of:
                1.4489713 = boost
                5.078731 = idf(docFreq=751, maxDocs=44421)
                0.016667048 = queryNorm
              0.39677587 = fieldWeight in 2708, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.078731 = idf(docFreq=751, maxDocs=44421)
                0.078125 = fieldNorm(doc=2708)
          0.04453972 = weight(abstract_txt:what in 2708) [ClassicSimilarity], result of:
            0.04453972 = score(doc=2708,freq=1.0), product of:
              0.13234974 = queryWeight, product of:
                1.8434447 = boost
                4.3075895 = idf(docFreq=1625, maxDocs=44421)
                0.016667048 = queryNorm
              0.33653045 = fieldWeight in 2708, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3075895 = idf(docFreq=1625, maxDocs=44421)
                0.078125 = fieldNorm(doc=2708)
          0.2497726 = weight(abstract_txt:mesh in 2708) [ClassicSimilarity], result of:
            0.2497726 = score(doc=2708,freq=3.0), product of:
              0.2530369 = queryWeight, product of:
                2.081205 = boost
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.016667048 = queryNorm
              0.9870995 = fieldWeight in 2708, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.078125 = fieldNorm(doc=2708)
          0.35099116 = weight(abstract_txt:medline in 2708) [ClassicSimilarity], result of:
            0.35099116 = score(doc=2708,freq=1.0), product of:
              0.660337 = queryWeight, product of:
                5.8232627 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.016667048 = queryNorm
              0.5315334 = fieldWeight in 2708, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.078125 = fieldNorm(doc=2708)
        0.28 = coord(7/25)
    
  2. Rae, A.R.; Mork, J.G.; Demner-Fushman, D.: ¬The National Library of Medicine indexer assignment dataset : a new large-scale dataset for reviewer assignment research (2023) 0.20
    0.20408489 = sum of:
      0.20408489 = product of:
        0.8503537 = sum of:
          0.021990025 = weight(abstract_txt:related in 1886) [ClassicSimilarity], result of:
            0.021990025 = score(doc=1886,freq=1.0), product of:
              0.083807886 = queryWeight, product of:
                1.1977478 = boost
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.016667048 = queryNorm
              0.2623861 = fieldWeight in 1886, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.02269717 = weight(abstract_txt:over in 1886) [ClassicSimilarity], result of:
            0.02269717 = score(doc=1886,freq=1.0), product of:
              0.08559509 = queryWeight, product of:
                1.2104515 = boost
                4.242705 = idf(docFreq=1734, maxDocs=44421)
                0.016667048 = queryNorm
              0.26516905 = fieldWeight in 1886, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.242705 = idf(docFreq=1734, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.032986954 = weight(abstract_txt:database in 1886) [ClassicSimilarity], result of:
            0.032986954 = score(doc=1886,freq=2.0), product of:
              0.08716709 = queryWeight, product of:
                1.2215161 = boost
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.016667048 = queryNorm
              0.3784336 = fieldWeight in 1886, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.12318112 = weight(abstract_txt:million in 1886) [ClassicSimilarity], result of:
            0.12318112 = score(doc=1886,freq=3.0), product of:
              0.18328352 = queryWeight, product of:
                1.7712696 = boost
                6.208406 = idf(docFreq=242, maxDocs=44421)
                0.016667048 = queryNorm
              0.6720796 = fieldWeight in 1886, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.208406 = idf(docFreq=242, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.16315079 = weight(abstract_txt:mesh in 1886) [ClassicSimilarity], result of:
            0.16315079 = score(doc=1886,freq=2.0), product of:
              0.2530369 = queryWeight, product of:
                2.081205 = boost
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.016667048 = queryNorm
              0.64477074 = fieldWeight in 1886, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
          0.48634765 = weight(abstract_txt:medline in 1886) [ClassicSimilarity], result of:
            0.48634765 = score(doc=1886,freq=3.0), product of:
              0.660337 = queryWeight, product of:
                5.8232627 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.016667048 = queryNorm
              0.73651433 = fieldWeight in 1886, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.0625 = fieldNorm(doc=1886)
        0.24 = coord(6/25)
    
  3. Lin, X.: Designing a visual interface for online searching (1999) 0.17
    0.16968524 = sum of:
      0.16968524 = product of:
        1.0605328 = sum of:
          0.05330022 = weight(abstract_txt:search in 687) [ClassicSimilarity], result of:
            0.05330022 = score(doc=687,freq=6.0), product of:
              0.06351005 = queryWeight, product of:
                1.0426635 = boost
                3.654598 = idf(docFreq=3123, maxDocs=44421)
                0.016667048 = queryNorm
              0.8392407 = fieldWeight in 687, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.654598 = idf(docFreq=3123, maxDocs=44421)
                0.09375 = fieldNorm(doc=687)
          0.03298504 = weight(abstract_txt:related in 687) [ClassicSimilarity], result of:
            0.03298504 = score(doc=687,freq=1.0), product of:
              0.083807886 = queryWeight, product of:
                1.1977478 = boost
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.016667048 = queryNorm
              0.39357919 = fieldWeight in 687, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.198178 = idf(docFreq=1813, maxDocs=44421)
                0.09375 = fieldNorm(doc=687)
          0.24472617 = weight(abstract_txt:mesh in 687) [ClassicSimilarity], result of:
            0.24472617 = score(doc=687,freq=2.0), product of:
              0.2530369 = queryWeight, product of:
                2.081205 = boost
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.016667048 = queryNorm
              0.9671561 = fieldWeight in 687, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.09375 = fieldNorm(doc=687)
          0.72952145 = weight(abstract_txt:medline in 687) [ClassicSimilarity], result of:
            0.72952145 = score(doc=687,freq=3.0), product of:
              0.660337 = queryWeight, product of:
                5.8232627 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.016667048 = queryNorm
              1.1047715 = fieldWeight in 687, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.09375 = fieldNorm(doc=687)
        0.16 = coord(4/25)
    
  4. Srinivasan, P.: Query expansion and MEDLINE (1996) 0.17
    0.16746345 = sum of:
      0.16746345 = product of:
        1.0466466 = sum of:
          0.025386343 = weight(abstract_txt:search in 67) [ClassicSimilarity], result of:
            0.025386343 = score(doc=67,freq=1.0), product of:
              0.06351005 = queryWeight, product of:
                1.0426635 = boost
                3.654598 = idf(docFreq=3123, maxDocs=44421)
                0.016667048 = queryNorm
              0.39972165 = fieldWeight in 67, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.654598 = idf(docFreq=3123, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
          0.040819276 = weight(abstract_txt:database in 67) [ClassicSimilarity], result of:
            0.040819276 = score(doc=67,freq=1.0), product of:
              0.08716709 = queryWeight, product of:
                1.2215161 = boost
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.016667048 = queryNorm
              0.4682877 = fieldWeight in 67, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
          0.28551388 = weight(abstract_txt:mesh in 67) [ClassicSimilarity], result of:
            0.28551388 = score(doc=67,freq=2.0), product of:
              0.2530369 = queryWeight, product of:
                2.081205 = boost
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.016667048 = queryNorm
              1.1283488 = fieldWeight in 67, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
          0.69492716 = weight(abstract_txt:medline in 67) [ClassicSimilarity], result of:
            0.69492716 = score(doc=67,freq=2.0), product of:
              0.660337 = queryWeight, product of:
                5.8232627 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.016667048 = queryNorm
              1.0523826 = fieldWeight in 67, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
        0.16 = coord(4/25)
    
  5. Leydesdorff, L.; Rotolo, D.; Rafols, I.: Bibliometric perspectives on medical innovation using the medical subject headings of PubMed (2012) 0.14
    0.14376923 = sum of:
      0.14376923 = product of:
        0.8985577 = sum of:
          0.028371463 = weight(abstract_txt:over in 1494) [ClassicSimilarity], result of:
            0.028371463 = score(doc=1494,freq=1.0), product of:
              0.08559509 = queryWeight, product of:
                1.2104515 = boost
                4.242705 = idf(docFreq=1734, maxDocs=44421)
                0.016667048 = queryNorm
              0.3314613 = fieldWeight in 1494, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.242705 = idf(docFreq=1734, maxDocs=44421)
                0.078125 = fieldNorm(doc=1494)
          0.05831325 = weight(abstract_txt:database in 1494) [ClassicSimilarity], result of:
            0.05831325 = score(doc=1494,freq=4.0), product of:
              0.08716709 = queryWeight, product of:
                1.2215161 = boost
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.016667048 = queryNorm
              0.6689824 = fieldWeight in 1494, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.2814875 = idf(docFreq=1668, maxDocs=44421)
                0.078125 = fieldNorm(doc=1494)
          0.20393847 = weight(abstract_txt:mesh in 1494) [ClassicSimilarity], result of:
            0.20393847 = score(doc=1494,freq=2.0), product of:
              0.2530369 = queryWeight, product of:
                2.081205 = boost
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.016667048 = queryNorm
              0.8059634 = fieldWeight in 1494, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.2947483 = idf(docFreq=81, maxDocs=44421)
                0.078125 = fieldNorm(doc=1494)
          0.60793453 = weight(abstract_txt:medline in 1494) [ClassicSimilarity], result of:
            0.60793453 = score(doc=1494,freq=3.0), product of:
              0.660337 = queryWeight, product of:
                5.8232627 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.016667048 = queryNorm
              0.9206429 = fieldWeight in 1494, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.078125 = fieldNorm(doc=1494)
        0.16 = coord(4/25)