Search (123 results, page 1 of 7)

  • × year_i:[1980 TO 1990}
  1. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.21 
    0.20504957 = product of:
  0.41009915 = sum of:
    0.41009915 = sum of:
      0.32677332 = weight(_text_:c.j in 2134) [ClassicSimilarity], result of:
        0.32677332 = score(doc=2134,freq=2.0), product of:
          0.30463868 = queryWeight, product of:
            6.9347134 = idf(docFreq=116, maxDocs=44218)
            0.04392953 = queryNorm
          1.0726587 = fieldWeight in 2134, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            6.9347134 = idf(docFreq=116, maxDocs=44218)
            0.109375 = fieldNorm(doc=2134)
      0.08332582 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
        0.08332582 = score(doc=2134,freq=2.0), product of:
          0.15383372 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.04392953 = queryNorm
          0.5416616 = fieldWeight in 2134, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.109375 = fieldNorm(doc=2134)
  0.5 = coord(1/2)
    Date
    30. 3.2001 13:32:22
  2. Research and development in information retrieval : Proc. of the 3rd joint BCS and ACM symp., Cambridge, 2.-6.7.1984 (1984) 0.09 
    0.09336381 = product of:
  0.18672761 = sum of:
    0.18672761 = product of:
      0.37345523 = sum of:
        0.37345523 = weight(_text_:c.j in 922) [ClassicSimilarity], result of:
          0.37345523 = score(doc=922,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            1.2258956 = fieldWeight in 922, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.125 = fieldNorm(doc=922)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Editor
    Rijsbergen, C.J. van
  3. Rijsbergen, C.J. van: Retrieval effectiveness (1981) 0.09 
    0.09336381 = product of:
  0.18672761 = sum of:
    0.18672761 = product of:
      0.37345523 = sum of:
        0.37345523 = weight(_text_:c.j in 3147) [ClassicSimilarity], result of:
          0.37345523 = score(doc=3147,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            1.2258956 = fieldWeight in 3147, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.125 = fieldNorm(doc=3147)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  4. Armstrong, C.J.; Keen, E.M.: Workbook for NEPHIS and KWAC : Microcomputer printed subject indexes teaching package, Pt.1 (1982) 0.08 
    0.08169333 = product of:
  0.16338666 = sum of:
    0.16338666 = product of:
      0.32677332 = sum of:
        0.32677332 = weight(_text_:c.j in 439) [ClassicSimilarity], result of:
          0.32677332 = score(doc=439,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            1.0726587 = fieldWeight in 439, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.109375 = fieldNorm(doc=439)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  5. Armstrong, C.J.; Keen, E.M.: Manual for teaching NEPHIS and KWAC : Microcomputer printed subject indexes teaching package, Pt.2 (1982) 0.08 
    0.08169333 = product of:
  0.16338666 = sum of:
    0.16338666 = product of:
      0.32677332 = sum of:
        0.32677332 = weight(_text_:c.j in 440) [ClassicSimilarity], result of:
          0.32677332 = score(doc=440,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            1.0726587 = fieldWeight in 440, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.109375 = fieldNorm(doc=440)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  6. Date, C.J.: ¬An introduction to database systems : 2 vols (1982/90) 0.08 
    0.08169333 = product of:
  0.16338666 = sum of:
    0.16338666 = product of:
      0.32677332 = sum of:
        0.32677332 = weight(_text_:c.j in 4889) [ClassicSimilarity], result of:
          0.32677332 = score(doc=4889,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            1.0726587 = fieldWeight in 4889, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.109375 = fieldNorm(doc=4889)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  7. Fuhr, N.; Knorz, G.: Retrieval test evaluation of a rule based automatic indexing (AIR/PHYS) (1984) 0.07 
    0.07002286 = product of:
  0.14004572 = sum of:
    0.14004572 = product of:
      0.28009143 = sum of:
        0.28009143 = weight(_text_:c.j in 2321) [ClassicSimilarity], result of:
          0.28009143 = score(doc=2321,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            0.91942173 = fieldWeight in 2321, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.09375 = fieldNorm(doc=2321)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Research and development in information retrieval. Proc. of the 3rd joint BCS and ACM symp., Cambridge, 2.-6.7.1984. Ed.: C.J. van Rijsbergen
  8. Rijsbergen, C.J. van: ¬A non-classical logic for information retrieval (1986) 0.07 
    0.07002286 = product of:
  0.14004572 = sum of:
    0.14004572 = product of:
      0.28009143 = sum of:
        0.28009143 = weight(_text_:c.j in 1933) [ClassicSimilarity], result of:
          0.28009143 = score(doc=1933,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            0.91942173 = fieldWeight in 1933, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.09375 = fieldNorm(doc=1933)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  9. Salton, G.; Rijsbergen, C.J. van; Maron, M.E.: Panel on key issues in information retrieval (1983) 0.07 
    0.06601819 = product of:
  0.13203637 = sum of:
    0.13203637 = product of:
      0.26407275 = sum of:
        0.26407275 = weight(_text_:c.j in 7410) [ClassicSimilarity], result of:
          0.26407275 = score(doc=7410,freq=4.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            0.8668392 = fieldWeight in 7410, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.0625 = fieldNorm(doc=7410)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Contribution to an issue devoted to the 6th Annual International Conference of the Special Interest Group on Information Retrieval of the Association for Computing Machinery (USA) held at the National Library of Medicine, Bethesda, Maryland, from 6-8 June 83. The following papers were presented in session 12 which was a panel on key issues in information retrieval: SALTON, G.: Research problems in automatic information retrieval; RIJSBERGEN, C.J. van: Information retrieval: new directions, old solutions; MARON, M.E.: Open problems in information retrieval
  10. Information retrieval experiment (1981) 0.04 
    0.040846664 = product of:
  0.08169333 = sum of:
    0.08169333 = product of:
      0.16338666 = sum of:
        0.16338666 = weight(_text_:c.j in 2653) [ClassicSimilarity], result of:
          0.16338666 = score(doc=2653,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            0.5363293 = fieldWeight in 2653, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2653)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Content
    Enthält die Beiträge: ROBERTSON, S.E.: The methodology of information retrieval experiment; RIJSBERGEN, C.J. van: Retrieval effectiveness; BELKIN, N.: Ineffable concepts in information retrieval; TAGUE, J.M.: The pragmatics of information retrieval experimentation; LANCASTER, F.W.: Evaluation within the environment of an operating information service; BARRACLOUGH, E.D.: Opportunities for testing with online systems; KEEN, M.E.: Laboratory tests of manual systems; ODDY, R.N.: Laboratory tests: automatic systems; HEINE, M.D.: Simulation, and simulation experiments; COOPER, W.S.: Gedanken experimentation: an alternative to traditional system testing?; SPARCK JONES, K.: Actual tests - retrieval system tests; EVANS, L.: An experiment: search strategy variation in SDI profiles; SALTON, G.: The Smart environment for retrieval system evaluation - advantage and problem areas
  11. Defude, B.: Knowledge based systems versus thesaurus : an architecture problem about expert systems design (1984) 0.04 
    0.03501143 = product of:
  0.07002286 = sum of:
    0.07002286 = product of:
      0.14004572 = sum of:
        0.14004572 = weight(_text_:c.j in 923) [ClassicSimilarity], result of:
          0.14004572 = score(doc=923,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            0.45971087 = fieldWeight in 923, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.046875 = fieldNorm(doc=923)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Research and development in information retrieval. Proc. of the 3rd joint BCS and ACM symp., Cambridge, 2.-6.7.1984. Ed. C.J. van Rijsbergen
  12. Dahlberg, I.: Conceptual definitions for INTERCONCEPT (1981) 0.03 
    0.029759223 = product of:
  0.059518445 = sum of:
    0.059518445 = product of:
      0.11903689 = sum of:
        0.11903689 = weight(_text_:22 in 1630) [ClassicSimilarity], result of:
          0.11903689 = score(doc=1630,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.77380234 = fieldWeight in 1630, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.15625 = fieldNorm(doc=1630)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    International classification. 8(1981), S.16-22
  13. Pietris, M.K.D.: LCSH update (1988) 0.03 
    0.029759223 = product of:
  0.059518445 = sum of:
    0.059518445 = product of:
      0.11903689 = sum of:
        0.11903689 = weight(_text_:22 in 2798) [ClassicSimilarity], result of:
          0.11903689 = score(doc=2798,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.77380234 = fieldWeight in 2798, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.15625 = fieldNorm(doc=2798)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Cataloguing Australia. 13(1988), S.19-22
  14. Woods, W.A.: What's important about knowledge representation? (1983) 0.03 
    0.029759223 = product of:
  0.059518445 = sum of:
    0.059518445 = product of:
      0.11903689 = sum of:
        0.11903689 = weight(_text_:22 in 6143) [ClassicSimilarity], result of:
          0.11903689 = score(doc=6143,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.77380234 = fieldWeight in 6143, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.15625 = fieldNorm(doc=6143)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Computer. 16(1983) no.10, S.22-27
  15. Gehirn und Nervensystem : woraus sie bestehen - wie sie funktionieren - was sie leisten (1988) 0.03 
    0.02525154 = product of:
  0.05050308 = sum of:
    0.05050308 = product of:
      0.10100616 = sum of:
        0.10100616 = weight(_text_:22 in 670) [ClassicSimilarity], result of:
          0.10100616 = score(doc=670,freq=4.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.6565931 = fieldWeight in 670, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=670)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2000 18:22:27
  16. Junginger, F.: Regeln für den Schlagwortkatalog: RSWK : Ergänzungen und Berichtigungen Nr.1 (1988) 0.02 
    0.023807378 = product of:
  0.047614757 = sum of:
    0.047614757 = product of:
      0.095229514 = sum of:
        0.095229514 = weight(_text_:22 in 195) [ClassicSimilarity], result of:
          0.095229514 = score(doc=195,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.61904186 = fieldWeight in 195, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.125 = fieldNorm(doc=195)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Bibliotheksdienst. 22(1988), S.552-563
  17. Voorhees, E.M.: Implementing agglomerative hierarchic clustering algorithms for use in document retrieval (1986) 0.02 
    0.023807378 = product of:
  0.047614757 = sum of:
    0.047614757 = product of:
      0.095229514 = sum of:
        0.095229514 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
          0.095229514 = score(doc=402,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.61904186 = fieldWeight in 402, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.125 = fieldNorm(doc=402)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Information processing and management. 22(1986) no.6, S.465-476
  18. Tell, B.V.: Cataloging rules and database production : implications for manpower training in a developing country (1989) 0.02 
    0.023807378 = product of:
  0.047614757 = sum of:
    0.047614757 = product of:
      0.095229514 = sum of:
        0.095229514 = weight(_text_:22 in 435) [ClassicSimilarity], result of:
          0.095229514 = score(doc=435,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.61904186 = fieldWeight in 435, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.125 = fieldNorm(doc=435)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    International forum on information and documentation. 14(1989), S.22-27
  19. Grundsätze der Universellen Dezimalklassifikation (DK) und Regeln für ihre Revision und Veröffentlichung (1981) 0.02 
    0.023807378 = product of:
  0.047614757 = sum of:
    0.047614757 = product of:
      0.095229514 = sum of:
        0.095229514 = weight(_text_:22 in 1175) [ClassicSimilarity], result of:
          0.095229514 = score(doc=1175,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.61904186 = fieldWeight in 1175, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.125 = fieldNorm(doc=1175)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    DK-Mitteilungen. 25(1981) Nr.4, S.15-22
  20. Hermes, H.J.: ¬Die DK: eine todkranke Klassifikation? (1983) 0.02 
    0.023807378 = product of:
  0.047614757 = sum of:
    0.047614757 = product of:
      0.095229514 = sum of:
        0.095229514 = weight(_text_:22 in 1176) [ClassicSimilarity], result of:
          0.095229514 = score(doc=1176,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.61904186 = fieldWeight in 1176, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.125 = fieldNorm(doc=1176)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    DK-Mitteilungen. 27(1983) Nr.6, S.19-22

Authors

Languages

  • e 80
  • d 41
  • f 1
  • More… Less…

Types

  • a 90
  • m 22
  • s 6
  • u 2
  • x 2
  • ? 1
  • b 1
  • More… Less…

Themes

Subjects

Classifications