Search (32 results, page 1 of 2)

Lancaster, F.W.: MEDLARS : report on the evaluation of its operating effiency (1961) 0.06

0.05576241 = product of:
  0.11152482 = sum of:
    0.0090247495 = weight(_text_:e in 1931) [ClassicSimilarity], result of:
      0.0090247495 = score(doc=1931,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.19057012 = fieldWeight in 1931, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.09375 = fieldNorm(doc=1931)
    0.046835296 = weight(_text_:u in 1931) [ClassicSimilarity], result of:
      0.046835296 = score(doc=1931,freq=2.0), product of:
        0.107882105 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.03294669 = queryNorm
        0.43413407 = fieldWeight in 1931, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.09375 = fieldNorm(doc=1931)
    0.055664778 = weight(_text_:k in 1931) [ClassicSimilarity], result of:
      0.055664778 = score(doc=1931,freq=2.0), product of:
        0.11761237 = queryWeight, product of:
          3.569778 = idf(docFreq=3384, maxDocs=44218)
          0.03294669 = queryNorm
        0.47329018 = fieldWeight in 1931, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.569778 = idf(docFreq=3384, maxDocs=44218)
          0.09375 = fieldNorm(doc=1931)
  0.5 = coord(3/6)

Footnote: Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.223-246.
Language: e

Lancaster, F.W.: Evaluation within the environment of an operating information service (1981) 0.03

0.02515704 = product of:
  0.07547112 = sum of:
    0.010528875 = weight(_text_:e in 3150) [ClassicSimilarity], result of:
      0.010528875 = score(doc=3150,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2223318 = fieldWeight in 3150, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.109375 = fieldNorm(doc=3150)
    0.06494224 = weight(_text_:k in 3150) [ClassicSimilarity], result of:
      0.06494224 = score(doc=3150,freq=2.0), product of:
        0.11761237 = queryWeight, product of:
          3.569778 = idf(docFreq=3384, maxDocs=44218)
          0.03294669 = queryNorm
        0.5521719 = fieldWeight in 3150, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.569778 = idf(docFreq=3384, maxDocs=44218)
          0.109375 = fieldNorm(doc=3150)
  0.33333334 = coord(2/6)

Language: e
Source: Information retrieval experiment. Ed.: K. Sparck Jones

Lancaster, F.W.: Evaluation in the context of the digital library (1996) 0.01

0.012413344 = product of:
  0.037240032 = sum of:
    0.0060165 = weight(_text_:e in 7886) [ClassicSimilarity], result of:
      0.0060165 = score(doc=7886,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.12704675 = fieldWeight in 7886, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0625 = fieldNorm(doc=7886)
    0.031223532 = weight(_text_:u in 7886) [ClassicSimilarity], result of:
      0.031223532 = score(doc=7886,freq=2.0), product of:
        0.107882105 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.03294669 = queryNorm
        0.28942272 = fieldWeight in 7886, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0625 = fieldNorm(doc=7886)
  0.33333334 = coord(2/6)

Language: e
Source: Towards a worldwide library: a ten year forecast. Proceedings of the 19th International Essen Symposium, 23-26 Sept 1996. Ed.: A.H. Helal u. J.W. Weiss

Lancaster, F.W.; Zeter, M.J.; Metzler, L.: Ranganathan's influence examined bibliometrically (1992) 0.00

0.0020055 = product of:
  0.012033 = sum of:
    0.012033 = weight(_text_:e in 1379) [ClassicSimilarity], result of:
      0.012033 = score(doc=1379,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2540935 = fieldWeight in 1379, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.125 = fieldNorm(doc=1379)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.: Vocabulary control in information retrieval systems (1977) 0.00

0.0020055 = product of:
  0.012033 = sum of:
    0.012033 = weight(_text_:e in 1774) [ClassicSimilarity], result of:
      0.012033 = score(doc=1774,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2540935 = fieldWeight in 1774, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.125 = fieldNorm(doc=1774)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.; Mills, J.: Testing indexes and index language devices : the ASLIB Cranfield project (1964) 0.00

0.0020055 = product of:
  0.012033 = sum of:
    0.012033 = weight(_text_:e in 2261) [ClassicSimilarity], result of:
      0.012033 = score(doc=2261,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2540935 = fieldWeight in 2261, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.125 = fieldNorm(doc=2261)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.; Gillespie, C.J.: Design and evaluation of information systems (1970) 0.00

0.0020055 = product of:
  0.012033 = sum of:
    0.012033 = weight(_text_:e in 243) [ClassicSimilarity], result of:
      0.012033 = score(doc=243,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2540935 = fieldWeight in 243, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.125 = fieldNorm(doc=243)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.; Elliker, C.; Connell, T.H.: Subject analysis (1989) 0.00

0.0020055 = product of:
  0.012033 = sum of:
    0.012033 = weight(_text_:e in 338) [ClassicSimilarity], result of:
      0.012033 = score(doc=338,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2540935 = fieldWeight in 338, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.125 = fieldNorm(doc=338)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.; Li, J.: ¬The law of constant accessibility of information (1988/89) 0.00

0.0017548124 = product of:
  0.010528875 = sum of:
    0.010528875 = weight(_text_:e in 1565) [ClassicSimilarity], result of:
      0.010528875 = score(doc=1565,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2223318 = fieldWeight in 1565, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.109375 = fieldNorm(doc=1565)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.: Evaluation of expert systems in information service applications (1994) 0.00

0.0017548124 = product of:
  0.010528875 = sum of:
    0.010528875 = weight(_text_:e in 8905) [ClassicSimilarity], result of:
      0.010528875 = score(doc=8905,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2223318 = fieldWeight in 8905, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.109375 = fieldNorm(doc=8905)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.: Has technology improved subject access? (199?) 0.00

0.0017548124 = product of:
  0.010528875 = sum of:
    0.010528875 = weight(_text_:e in 184) [ClassicSimilarity], result of:
      0.010528875 = score(doc=184,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2223318 = fieldWeight in 184, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.109375 = fieldNorm(doc=184)
  0.16666667 = coord(1/6)

Language: e

Pinto, M.; Lancaster, F.W.: Abstracts and abstracting in knowledge discovery (1999) 0.00

0.0017548124 = product of:
  0.010528875 = sum of:
    0.010528875 = weight(_text_:e in 6233) [ClassicSimilarity], result of:
      0.010528875 = score(doc=6233,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2223318 = fieldWeight in 6233, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.109375 = fieldNorm(doc=6233)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.: Searching databases on CD-ROM : comparison of the results of end-user searching with results from two modes of searching by skilled intermediaries (1994) 0.00

0.001681663 = product of:
  0.010089978 = sum of:
    0.010089978 = weight(_text_:e in 8372) [ClassicSimilarity], result of:
      0.010089978 = score(doc=8372,freq=10.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.2130639 = fieldWeight in 8372, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.046875 = fieldNorm(doc=8372)
  0.16666667 = coord(1/6)

Content: Im einzelnen wurden für den Patron (P), den Education Librarian (E) und das Team (T) folgende Zahlen ermittelt: Recall (P:32,3%; E:45,9%; T:53,8%); Precision (P:75,5%; E:71,4%; T:66,8%); Novelty (P:51,8%; E:61,6%; T:59,4%)
Language: e

Lancaster, F.W.: ¬The evolution of electronic publishing (1995) 0.00

0.001504125 = product of:
  0.0090247495 = sum of:
    0.0090247495 = weight(_text_:e in 2446) [ClassicSimilarity], result of:
      0.0090247495 = score(doc=2446,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.19057012 = fieldWeight in 2446, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.09375 = fieldNorm(doc=2446)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.: Do indexing and abstracting have a future? (2003) 0.00

0.001504125 = product of:
  0.0090247495 = sum of:
    0.0090247495 = weight(_text_:e in 3761) [ClassicSimilarity], result of:
      0.0090247495 = score(doc=3761,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.19057012 = fieldWeight in 3761, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.09375 = fieldNorm(doc=3761)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.: Precision and recall (2009) 0.00

0.0014181028 = product of:
  0.008508616 = sum of:
    0.008508616 = weight(_text_:e in 3866) [ClassicSimilarity], result of:
      0.008508616 = score(doc=3866,freq=4.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.17967124 = fieldWeight in 3866, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0625 = fieldNorm(doc=3866)
  0.16666667 = coord(1/6)

Footnote: Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.
Language: e

Lancaster, F.W.: Electronic publishing (1989) 0.00

0.0012534375 = product of:
  0.007520625 = sum of:
    0.007520625 = weight(_text_:e in 2881) [ClassicSimilarity], result of:
      0.007520625 = score(doc=2881,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.15880844 = fieldWeight in 2881, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.078125 = fieldNorm(doc=2881)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.: Librarians, technology and mediocrity (1993) 0.00

0.00100275 = product of:
  0.0060165 = sum of:
    0.0060165 = weight(_text_:e in 7006) [ClassicSimilarity], result of:
      0.0060165 = score(doc=7006,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.12704675 = fieldWeight in 7006, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0625 = fieldNorm(doc=7006)
  0.16666667 = coord(1/6)

Language: e

Krooks, D.A.; Lancaster, F.W.: ¬The evolution of guidelines for thesaurus construction (1993) 0.00

0.00100275 = product of:
  0.0060165 = sum of:
    0.0060165 = weight(_text_:e in 7128) [ClassicSimilarity], result of:
      0.0060165 = score(doc=7128,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.12704675 = fieldWeight in 7128, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0625 = fieldNorm(doc=7128)
  0.16666667 = coord(1/6)

Language: e

Lancaster, F.W.: On the need for role indicators in postcoordinate retrieval systems (1968) 0.00

0.00100275 = product of:
  0.0060165 = sum of:
    0.0060165 = weight(_text_:e in 8948) [ClassicSimilarity], result of:
      0.0060165 = score(doc=8948,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.12704675 = fieldWeight in 8948, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0625 = fieldNorm(doc=8948)
  0.16666667 = coord(1/6)

Language: e

Search (32 results, page 1 of 2)

Authors

Years

Themes