Search (28 results, page 1 of 2)

  • × year_i:[1990 TO 2000}
  • × 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. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.00
    0.003414233 = product of:
      0.017071165 = sum of:
        0.017071165 = product of:
          0.051213495 = sum of:
            0.051213495 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
              0.051213495 = score(doc=3103,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = 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)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    27. 2.1999 20:55:22
  8. 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
    0.003414233 = product of:
      0.017071165 = sum of:
        0.017071165 = product of:
          0.051213495 = sum of:
            0.051213495 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
              0.051213495 = score(doc=3107,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = 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)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    27. 2.1999 20:59:22
  9. Kristensen, J.: Expanding end-users' query statements for free text searching with a search-aid thesaurus (1993) 0.00
    0.00275618 = product of:
      0.013780899 = sum of:
        0.013780899 = product of:
          0.041342698 = sum of:
            0.041342698 = weight(_text_:29 in 6621) [ClassicSimilarity], result of:
              0.041342698 = score(doc=6621,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.31092256 = fieldWeight in 6621, 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=6621)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Information processing and management. 29(1993) no.6, S.733-744
  10. Harman, D.K.: ¬The first text retrieval conference : TREC-1, 1992 (1993) 0.00
    0.00275618 = product of:
      0.013780899 = sum of:
        0.013780899 = product of:
          0.041342698 = sum of:
            0.041342698 = weight(_text_:29 in 1317) [ClassicSimilarity], result of:
              0.041342698 = score(doc=1317,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.31092256 = fieldWeight in 1317, 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=1317)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Information processing and management. 29(1993) no.4, S.411-414
  11. Sanderson, M.: ¬The Reuters test collection (1996) 0.00
    0.0027313863 = product of:
      0.013656932 = sum of:
        0.013656932 = product of:
          0.040970795 = sum of:
            0.040970795 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
              0.040970795 = score(doc=6971,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.30952093 = fieldWeight in 6971, 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=6971)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
  12. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.00
    0.0027313863 = product of:
      0.013656932 = sum of:
        0.013656932 = product of:
          0.040970795 = sum of:
            0.040970795 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
              0.040970795 = score(doc=744,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.30952093 = fieldWeight in 744, 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=744)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    1. 8.1996 22:01:00
  13. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.00
    0.0027313863 = product of:
      0.013656932 = sum of:
        0.013656932 = product of:
          0.040970795 = sum of:
            0.040970795 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
              0.040970795 = score(doc=3087,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.30952093 = fieldWeight in 3087, 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=3087)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Abstract
    Proceedings of the 5th TREC-confrerence held in Gaithersburgh, Maryland, Nov 20-22, 1996. Aim of the conference was discussion on retrieval techniques for large test collections. Different research groups used different techniques, such as automated thesauri, term weighting, natural language techniques, relevance feedback and advanced pattern matching, for information retrieval from the same large database. This procedure makes it possible to compare the results. The proceedings include papers, tables of the system results, and brief system descriptions including timing and storage information
  14. Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.00
    0.0027313863 = product of:
      0.013656932 = sum of:
        0.013656932 = product of:
          0.040970795 = sum of:
            0.040970795 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
              0.040970795 = score(doc=3572,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.30952093 = fieldWeight in 3572, 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=3572)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Online. 22(1998) no.3, S.24-26,28
  15. Ellis, D.: Progress and problems in information retrieval (1996) 0.00
    0.0027313863 = product of:
      0.013656932 = sum of:
        0.013656932 = product of:
          0.040970795 = sum of:
            0.040970795 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
              0.040970795 = score(doc=789,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.30952093 = fieldWeight in 789, 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=789)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    26. 7.2002 20:22:46
  16. Smithson, S.: Information retrieval evaluation in practice : a case study approach (1994) 0.00
    0.002389963 = product of:
      0.011949815 = sum of:
        0.011949815 = product of:
          0.035849445 = sum of:
            0.035849445 = weight(_text_:22 in 7302) [ClassicSimilarity], result of:
              0.035849445 = score(doc=7302,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.2708308 = fieldWeight in 7302, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=7302)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Abstract
    The evaluation of information retrieval systems is an important yet difficult operation. This paper describes an exploratory evaluation study that takes an interpretive approach to evaluation. The longitudinal study examines evaluation through the information-seeking behaviour of 22 case studies of 'real' users. The eclectic approach to data collection produced behavioral data that is compared with relevance judgements and satisfaction ratings. The study demonstrates considerable variations among the cases, among different evaluation measures within the same case, and among the same measures at different stages within a single case. It is argued that those involved in evaluation should be aware of the difficulties, and base any evaluation on a good understanding of the cases in question
  17. Blair, D.C.: STAIRS Redux : thoughts on the STAIRS evaluation, ten years after (1996) 0.00
    0.002389963 = product of:
      0.011949815 = sum of:
        0.011949815 = product of:
          0.035849445 = sum of:
            0.035849445 = weight(_text_:22 in 3002) [ClassicSimilarity], result of:
              0.035849445 = score(doc=3002,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.2708308 = fieldWeight in 3002, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3002)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Journal of the American Society for Information Science. 47(1996) no.1, S.4-22
  18. Losee, R.M.: Determining information retrieval and filtering performance without experimentation (1995) 0.00
    0.002389963 = product of:
      0.011949815 = sum of:
        0.011949815 = product of:
          0.035849445 = sum of:
            0.035849445 = weight(_text_:22 in 3368) [ClassicSimilarity], result of:
              0.035849445 = score(doc=3368,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.2708308 = fieldWeight in 3368, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3368)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    22. 2.1996 13:14:10
  19. Brown, M.E.: By any other name : accounting for failure in the naming of subject categories (1995) 0.00
    0.002389963 = product of:
      0.011949815 = sum of:
        0.011949815 = product of:
          0.035849445 = sum of:
            0.035849445 = weight(_text_:22 in 5598) [ClassicSimilarity], result of:
              0.035849445 = score(doc=5598,freq=2.0), product of:
                0.13236842 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037799787 = queryNorm
                0.2708308 = fieldWeight in 5598, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5598)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Date
    2.11.1996 13:08:22
  20. Wood, F.; Ford, N.; Walsh, C.: ¬The effect of postings information on search behaviour (1994) 0.00
    0.002067135 = product of:
      0.0103356745 = sum of:
        0.0103356745 = product of:
          0.031007024 = sum of:
            0.031007024 = weight(_text_:29 in 6890) [ClassicSimilarity], result of:
              0.031007024 = score(doc=6890,freq=2.0), product of:
                0.13296783 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.037799787 = queryNorm
                0.23319192 = fieldWeight in 6890, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.046875 = fieldNorm(doc=6890)
          0.33333334 = coord(1/3)
      0.2 = coord(1/5)
    
    Source
    Journal of information science. 20(1994) no.1, S.29-40