Search (49 results, page 1 of 3)

  • × theme_ss:"Retrievalstudien"
  1. Dillon, M.: Enhanced bibliographic record retrieval experiments (1989) 0.04 
    0.043554243 = product of:
  0.26132545 = sum of:
    0.26132545 = weight(_text_:1989 in 1406) [ClassicSimilarity], result of:
      0.26132545 = score(doc=1406,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        1.3640437 = fieldWeight in 1406, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.125 = fieldNorm(doc=1406)
  0.16666667 = coord(1/6)
    Source
    OCLC newsletter. 1989, no.181, S.13-14
    Year
    1989
  2. Ongering, H.; Riesthuis, G.J.A.: ¬De ontsluiting in het ADION-systeem : precision en recall (1989) 0.04 
    0.043554243 = product of:
  0.26132545 = sum of:
    0.26132545 = weight(_text_:1989 in 416) [ClassicSimilarity], result of:
      0.26132545 = score(doc=416,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        1.3640437 = fieldWeight in 416, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.125 = fieldNorm(doc=416)
  0.16666667 = coord(1/6)
    Source
    Open. 21(1989) nos.7/8, S.261-264
    Year
    1989
  3. Croft, W.B.; Thompson, R.H.: Support for browsing in an intelligent text retrieval system (1989) 0.04 
    0.038109962 = product of:
  0.22865976 = sum of:
    0.22865976 = weight(_text_:1989 in 5004) [ClassicSimilarity], result of:
      0.22865976 = score(doc=5004,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        1.1935382 = fieldWeight in 5004, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.109375 = fieldNorm(doc=5004)
  0.16666667 = coord(1/6)
    Source
    International journal of man-machine studies. 30(1989), S.639-668
    Year
    1989
  4. Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.03 
    0.03062155 = product of:
  0.091864645 = sum of:
    0.07590819 = weight(_text_:1989 in 3564) [ClassicSimilarity], result of:
      0.07590819 = score(doc=3564,freq=3.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.3962189 = fieldWeight in 3564, product of:
          1.7320508 = tf(freq=3.0), with freq of:
            3.0 = termFreq=3.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.046875 = fieldNorm(doc=3564)
    0.015956458 = product of:
      0.031912915 = sum of:
        0.031912915 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
          0.031912915 = score(doc=3564,freq=2.0), product of:
            0.1374723 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.039257277 = queryNorm
            0.23214069 = fieldWeight in 3564, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=3564)
      0.5 = coord(1/2)
  0.33333334 = coord(2/6)
    Date
    9. 1.1996 10:22:31
    Year
    1989
  5. Gilchrist, A.: Research and consultancy (1998) 0.03 
    0.028608857 = product of:
  0.17165314 = sum of:
    0.17165314 = weight(_text_:politics in 1394) [ClassicSimilarity], result of:
      0.17165314 = score(doc=1394,freq=2.0), product of:
        0.27611402 = queryWeight, product of:
          7.033448 = idf(docFreq=105, maxDocs=44218)
          0.039257277 = queryNorm
        0.62167484 = fieldWeight in 1394, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          7.033448 = idf(docFreq=105, maxDocs=44218)
          0.0625 = fieldNorm(doc=1394)
  0.16666667 = coord(1/6)
    Abstract
    State of the art review of literature published about research and consultancy in library and information science (LIS). Issues covered include: scope and definitions of what constitutes research and consultancy; funding of research and development; national LIS research and the funding agencies; electronic libraries; document delivery; multimedia document delivery; the Z39.50 standard for client server computer architecture, the Internet and WWW; electronic publishing; information retrieval; evaluation and evaluation techniques; the Text Retrieval Conferences (TREC); the user domain; management issues; decision support systems; information politics and organizational culture; and value for money issues
  6. Kilgour, F.G.: Retrieval on information from computerized book texts (1989) 0.03 
    0.02530273 = product of:
  0.15181638 = sum of:
    0.15181638 = weight(_text_:1989 in 2965) [ClassicSimilarity], result of:
      0.15181638 = score(doc=2965,freq=3.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.7924378 = fieldWeight in 2965, product of:
          1.7320508 = tf(freq=3.0), with freq of:
            3.0 = termFreq=3.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.09375 = fieldNorm(doc=2965)
  0.16666667 = coord(1/6)
    Year
    1989
  7. Feng, S.: ¬A comparative study of indexing languages in single and multidatabase searching (1989) 0.02 
    0.021777121 = product of:
  0.13066272 = sum of:
    0.13066272 = weight(_text_:1989 in 2494) [ClassicSimilarity], result of:
      0.13066272 = score(doc=2494,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.68202186 = fieldWeight in 2494, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.0625 = fieldNorm(doc=2494)
  0.16666667 = coord(1/6)
    Source
    Canadian Journal of Information Science. 14(1989) no.2, S.26-46
    Year
    1989
  8. Prasher, R.G.: Evaluation of indexing system (1989) 0.02 
    0.021777121 = product of:
  0.13066272 = sum of:
    0.13066272 = weight(_text_:1989 in 4998) [ClassicSimilarity], result of:
      0.13066272 = score(doc=4998,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.68202186 = fieldWeight in 4998, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.0625 = fieldNorm(doc=4998)
  0.16666667 = coord(1/6)
    Source
    Herald of library science. 28(1989) no.3, S.157-65
    Year
    1989
  9. Pao, M.L.: Retrieval differences between term and citation indexing (1989) 0.02 
    0.016868487 = product of:
  0.10121092 = sum of:
    0.10121092 = weight(_text_:1989 in 3566) [ClassicSimilarity], result of:
      0.10121092 = score(doc=3566,freq=3.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.5282919 = fieldWeight in 3566, product of:
          1.7320508 = tf(freq=3.0), with freq of:
            3.0 = termFreq=3.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.0625 = fieldNorm(doc=3566)
  0.16666667 = coord(1/6)
    Year
    1989
  10. Pao, M.L.; Worthen, D.B.: Retrieval effectiveness by semantic and citation searching (1989) 0.02 
    0.016332842 = product of:
  0.09799705 = sum of:
    0.09799705 = weight(_text_:1989 in 2288) [ClassicSimilarity], result of:
      0.09799705 = score(doc=2288,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.5115164 = fieldWeight in 2288, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.046875 = fieldNorm(doc=2288)
  0.16666667 = coord(1/6)
    Source
    Journal of the American Society for Information Science. 40(1989), S.226-235
    Year
    1989
  11. MacCain, K.W.: Descriptor and citation retrieval in the medical behavioral sciences literature : retrieval overlaps and novelty distribution (1989) 0.02 
    0.016332842 = product of:
  0.09799705 = sum of:
    0.09799705 = weight(_text_:1989 in 2290) [ClassicSimilarity], result of:
      0.09799705 = score(doc=2290,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.5115164 = fieldWeight in 2290, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.046875 = fieldNorm(doc=2290)
  0.16666667 = coord(1/6)
    Source
    Journal of the American Society for Information Science. 40(1989), S.110-114
    Year
    1989
  12. Gordon, M.; Kochen, M.: Recall-precision trade-off : a derivation (1989) 0.02 
    0.016332842 = product of:
  0.09799705 = sum of:
    0.09799705 = weight(_text_:1989 in 4160) [ClassicSimilarity], result of:
      0.09799705 = score(doc=4160,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.5115164 = fieldWeight in 4160, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.046875 = fieldNorm(doc=4160)
  0.16666667 = coord(1/6)
    Source
    Journal of the American Society for Information Science. 40(1989) no.3, S.145-151
    Year
    1989
  13. Lochbaum, K.E.; Streeter, A.R.: Comparing and combining the effectiveness of latent semantic indexing and the ordinary vector space model for information retrieval (1989) 0.02 
    0.016332842 = product of:
  0.09799705 = sum of:
    0.09799705 = weight(_text_:1989 in 3458) [ClassicSimilarity], result of:
      0.09799705 = score(doc=3458,freq=5.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.5115164 = fieldWeight in 3458, product of:
          2.236068 = tf(freq=5.0), with freq of:
            5.0 = termFreq=5.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.046875 = fieldNorm(doc=3458)
  0.16666667 = coord(1/6)
    Source
    Information processing and management. 25(1989) no.6, S. 665-676
    Year
    1989
  14. Krause, J.; Womser-Hacker, C.: PADOK-II : Retrievaltests zur Bewertung von Volltextindexierungsvarianten für das deutsche Patentinformationssystem (1990) 0.01 
    0.013773061 = product of:
  0.08263837 = sum of:
    0.08263837 = weight(_text_:1989 in 2653) [ClassicSimilarity], result of:
      0.08263837 = score(doc=2653,freq=2.0), product of:
        0.19158144 = queryWeight, product of:
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.039257277 = queryNorm
        0.4313485 = fieldWeight in 2653, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8801513 = idf(docFreq=912, maxDocs=44218)
          0.0625 = fieldNorm(doc=2653)
  0.16666667 = coord(1/6)
    Abstract
    Vorgestellt werden die Ergebnisse extensiver Retrievaltests von zwei Varianten von Inhalteserschließungen (Freitext und PASSAT) für das deutsche Patentinformationssystem auf der Basis von Volltexten. Die Tests führte die Fachgruppe Linguistische Informationswissenschaft der Universität Regensburg von 1986-1989 in Zusammenarbeit mit dem Deutschen Patentamt, dem Fachinformationszentrum Karlsruhe und meheren industrieellen Partnern durch. Der Schwerpunkt des Berichts liegt auf dem allgemeinen Ansatz der Bewertung der Ziele des Projekts und auf der Darstellung der statistischen Evaluierungsergebnisse.
  15. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01 
    0.0062052896 = product of:
  0.037231736 = sum of:
    0.037231736 = product of:
      0.07446347 = sum of:
        0.07446347 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
          0.07446347 = score(doc=262,freq=2.0), product of:
            0.1374723 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.039257277 = queryNorm
            0.5416616 = fieldWeight in 262, 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=262)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    20.10.2000 12:22:23
  16. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.01 
    0.0062052896 = product of:
  0.037231736 = sum of:
    0.037231736 = product of:
      0.07446347 = sum of:
        0.07446347 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
          0.07446347 = score(doc=6418,freq=2.0), product of:
            0.1374723 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.039257277 = queryNorm
            0.5416616 = fieldWeight in 6418, 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=6418)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Source
    Online. 22(1998) no.6, S.57-58
  17. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.01 
    0.0062052896 = product of:
  0.037231736 = sum of:
    0.037231736 = product of:
      0.07446347 = sum of:
        0.07446347 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
          0.07446347 = score(doc=6438,freq=2.0), product of:
            0.1374723 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.039257277 = queryNorm
            0.5416616 = fieldWeight in 6438, 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=6438)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    11. 8.2001 16:22:19
  18. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.01 
    0.0062052896 = product of:
  0.037231736 = sum of:
    0.037231736 = product of:
      0.07446347 = sum of:
        0.07446347 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
          0.07446347 = score(doc=5089,freq=2.0), product of:
            0.1374723 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.039257277 = queryNorm
            0.5416616 = fieldWeight in 5089, 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=5089)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    22. 7.2006 18:43:54
  19. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.00 
    0.0044323495 = product of:
  0.026594097 = sum of:
    0.026594097 = product of:
      0.053188194 = sum of:
        0.053188194 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
          0.053188194 = score(doc=3103,freq=2.0), product of:
            0.1374723 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.039257277 = queryNorm
            0.38690117 = fieldWeight in 3103, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=3103)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    27. 2.1999 20:55:22
  20. Ng, K.B.; Loewenstern, D.; Basu, C.; Hirsh, H.; Kantor, P.B.: Data fusion of machine-learning methods for the TREC5 routing tak (and other work) (1997) 0.00 
    0.0044323495 = product of:
  0.026594097 = sum of:
    0.026594097 = product of:
      0.053188194 = sum of:
        0.053188194 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
          0.053188194 = score(doc=3107,freq=2.0), product of:
            0.1374723 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.039257277 = queryNorm
            0.38690117 = fieldWeight in 3107, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=3107)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    27. 2.1999 20:59:22

Authors

Years

Languages

  • e 42
  • d 4
  • f 1
  • nl 1
  • More… Less…

Types

  • a 44
  • s 4
  • m 2
  • More… Less…

Themes