Search (81 results, page 1 of 5)

  • × theme_ss:"Retrievalstudien"
  1. Van der Walt, H.E.A.; Brakel, P.A. van: Method for the evaluation of the retrieval effectiveness of a CD-ROM bibliographic database (1991) 0.03
    0.033503164 = product of:
      0.16751581 = sum of:
        0.16751581 = weight(_text_:compact in 3114) [ClassicSimilarity], result of:
          0.16751581 = score(doc=3114,freq=2.0), product of:
            0.28613505 = queryWeight, product of:
              7.5697527 = idf(docFreq=61, maxDocs=44218)
              0.037799787 = queryNorm
            0.5854432 = fieldWeight in 3114, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              7.5697527 = idf(docFreq=61, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3114)
      0.2 = coord(1/5)
    
    Abstract
    Addresses the problem of how potential users of CD-ROM data bases can objectively establish which version of the same data base is best suited for a specific situation. The problem was solved by applying the retrieval effectiveness of current on-line data base search systems as a standard measurement. 5 search queries from the medical sciences were presented by experienced users of MEDLINE. Search strategies were written for both DIALOG and DATA-STAR. Search results were compared to create a recall base from documents present in both on-line searches. This recall base was then used to establish the retrieval and precision of 4 CD-ROM data bases: MEDLINE, Compact Cambrdge MEDLINE, DIALOG OnDisc, Comprehensive MEDLINE/EBSCO
  2. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01
    0.010975133 = product of:
      0.054875664 = sum of:
        0.054875664 = product of:
          0.08231349 = sum of:
            0.041342698 = weight(_text_:29 in 5002) [ClassicSimilarity], result of:
              0.041342698 = score(doc=5002,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.31092256 = fieldWeight in 5002, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5002)
            0.040970795 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.040970795 = score(doc=5002,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.30952093 = fieldWeight in 5002, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5002)
          0.6666667 = coord(2/3)
      0.2 = coord(1/5)
    
    Date
    19. 3.1996 11:22:12
    Source
    Journal of documentation. 29(1973) no.3, S.251-257
  3. Chu, H.: Factors affecting relevance judgment : a report from TREC Legal track (2011) 0.01
    0.0068594585 = product of:
      0.03429729 = sum of:
        0.03429729 = product of:
          0.051445935 = sum of:
            0.025839187 = weight(_text_:29 in 4540) [ClassicSimilarity], result of:
              0.025839187 = score(doc=4540,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.19432661 = fieldWeight in 4540, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4540)
            0.025606748 = weight(_text_:22 in 4540) [ClassicSimilarity], result of:
              0.025606748 = score(doc=4540,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.19345059 = fieldWeight in 4540, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4540)
          0.6666667 = coord(2/3)
      0.2 = coord(1/5)
    
    Date
    12. 7.2011 18:29:22
  4. Hofstede, M.: Literatuur over onderwerpen zoeken in de OPC (1994) 0.01
    0.00551236 = product of:
      0.027561799 = sum of:
        0.027561799 = product of:
          0.082685396 = sum of:
            0.082685396 = weight(_text_:29 in 5400) [ClassicSimilarity], result of:
              0.082685396 = score(doc=5400,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.6218451 = fieldWeight in 5400, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.125 = fieldNorm(doc=5400)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    CRI bulletin. 29(1994), Sept., S.14-15
  5. Hancock-Beaulieu, M.; McKenzie, L.; Irving, A.: Evaluative protocols for searching behaviour in online library catalogues (1991) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 347) [ClassicSimilarity], result of:
              0.07234972 = score(doc=347,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 347, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=347)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    23. 1.1999 19:52:29
  6. Harman, D.K.: ¬The TREC test collections (2005) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 4637) [ClassicSimilarity], result of:
              0.07234972 = score(doc=4637,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 4637, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4637)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    29. 3.1996 18:16:49
  7. Buckley, C.; Voorhees, E.M.: Retrieval system evaluation (2005) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 648) [ClassicSimilarity], result of:
              0.07234972 = score(doc=648,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 648, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=648)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    29. 3.1996 18:16:49
  8. Voiskunskii, V.G.: Evaluation of search results (2000) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 4670) [ClassicSimilarity], result of:
              0.07234972 = score(doc=4670,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 4670, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4670)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Encyclopedia of library and information science. Vol.66, [=Suppl.29]
  9. Harman, D.K.: ¬The TREC ad hoc experiments (2005) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 5711) [ClassicSimilarity], result of:
              0.07234972 = score(doc=5711,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 5711, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=5711)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    29. 3.1996 18:16:49
  10. Robertson, S.; Callan, J.: Routing and filtering (2005) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 4688) [ClassicSimilarity], result of:
              0.07234972 = score(doc=4688,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 4688, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4688)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    29. 3.1996 18:16:49
  11. Beaulieu, M.: Approaches to user-based studies in information seeking and retrieval : a Sheffield perspective (2003) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 4692) [ClassicSimilarity], result of:
              0.07234972 = score(doc=4692,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 4692, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4692)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Journal of information science. 29(2003) no.4, S.239-248
  12. Harman, D.K.: Beyond English (2005) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 4850) [ClassicSimilarity], result of:
              0.07234972 = score(doc=4850,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 4850, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4850)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    29. 3.1996 18:16:49
  13. Voorhees, E.M.; Garofolo, J.S.: Retrieving noisy text (2005) 0.00
    0.004823315 = product of:
      0.024116574 = sum of:
        0.024116574 = product of:
          0.07234972 = sum of:
            0.07234972 = weight(_text_:29 in 5084) [ClassicSimilarity], result of:
              0.07234972 = score(doc=5084,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.5441145 = fieldWeight in 5084, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=5084)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    29. 3.1996 18:16:49
  14. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.00
    0.004779926 = product of:
      0.02389963 = sum of:
        0.02389963 = product of:
          0.07169889 = sum of:
            0.07169889 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.07169889 = score(doc=262,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = 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)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    20.10.2000 12:22:23
  15. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.00
    0.004779926 = product of:
      0.02389963 = sum of:
        0.02389963 = product of:
          0.07169889 = sum of:
            0.07169889 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
              0.07169889 = score(doc=6418,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = 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)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Online. 22(1998) no.6, S.57-58
  16. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.00
    0.004779926 = product of:
      0.02389963 = sum of:
        0.02389963 = product of:
          0.07169889 = sum of:
            0.07169889 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
              0.07169889 = score(doc=6438,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = 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)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    11. 8.2001 16:22:19
  17. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.00
    0.004779926 = product of:
      0.02389963 = sum of:
        0.02389963 = product of:
          0.07169889 = sum of:
            0.07169889 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
              0.07169889 = score(doc=5089,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = 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)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    22. 7.2006 18:43:54
  18. Voorhees, E.M.: Question answering in TREC (2005) 0.00
    0.00413427 = product of:
      0.020671349 = sum of:
        0.020671349 = product of:
          0.062014047 = sum of:
            0.062014047 = weight(_text_:29 in 6487) [ClassicSimilarity], result of:
              0.062014047 = score(doc=6487,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.46638384 = fieldWeight in 6487, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.09375 = fieldNorm(doc=6487)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    29. 3.1996 18:16:49
  19. TREC-1: The first text retrieval conference : Rockville, MD, USA, 4-6 Nov. 1993 (1993) 0.00
    0.00413427 = product of:
      0.020671349 = sum of:
        0.020671349 = product of:
          0.062014047 = sum of:
            0.062014047 = weight(_text_:29 in 1315) [ClassicSimilarity], result of:
              0.062014047 = score(doc=1315,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.46638384 = fieldWeight in 1315, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.09375 = fieldNorm(doc=1315)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Information processing and management. 29(1993) no.4, S.411-521
  20. Cormack, G.V.; Clarke, C.L.A.; Palmer, C.R.; Lynam, T.R.: MultiText experiments for TREC (2005) 0.00
    0.00413427 = product of:
      0.020671349 = sum of:
        0.020671349 = product of:
          0.062014047 = sum of:
            0.062014047 = weight(_text_:29 in 4298) [ClassicSimilarity], result of:
              0.062014047 = score(doc=4298,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.46638384 = fieldWeight in 4298, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.09375 = fieldNorm(doc=4298)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    29. 3.1996 18:16:49

Languages

  • e 72
  • d 5
  • f 1
  • fi 1
  • nl 1
  • More… Less…

Types

  • a 74
  • s 5
  • m 3
  • el 1
  • r 1
  • More… Less…