Search (59 results, page 2 of 3)

  • × theme_ss:"Retrievalstudien"
  • × type_ss:"a"
  1. Wan, T.-L.; Evens, M.; Wan, Y.-W.; Pao, Y.-Y.: Experiments with automatic indexing and a relational thesaurus in a Chinese information retrieval system (1997) 0.01
    0.013857029 = product of:
      0.027714059 = sum of:
        0.027714059 = product of:
          0.055428118 = sum of:
            0.055428118 = weight(_text_:l in 956) [ClassicSimilarity], result of:
              0.055428118 = score(doc=956,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.30739886 = fieldWeight in 956, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=956)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  2. Ahlgren, P.; Grönqvist, L.: Evaluation of retrieval effectiveness with incomplete relevance data : theoretical and experimental comparison of three measures (2008) 0.01
    0.013857029 = product of:
      0.027714059 = sum of:
        0.027714059 = product of:
          0.055428118 = sum of:
            0.055428118 = weight(_text_:l in 2032) [ClassicSimilarity], result of:
              0.055428118 = score(doc=2032,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.30739886 = fieldWeight in 2032, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2032)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Schultz Jr., W.N.; Braddy, L.: ¬A librarian-centered study of perceptions of subject terms and controlled vocabulary (2017) 0.01
    0.013857029 = product of:
      0.027714059 = sum of:
        0.027714059 = product of:
          0.055428118 = sum of:
            0.055428118 = weight(_text_:l in 5156) [ClassicSimilarity], result of:
              0.055428118 = score(doc=5156,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.30739886 = fieldWeight in 5156, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5156)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  4. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01
    0.012292883 = product of:
      0.024585767 = sum of:
        0.024585767 = product of:
          0.049171533 = sum of:
            0.049171533 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.049171533 = score(doc=5002,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    19. 3.1996 11:22:12
  5. Sanderson, M.: ¬The Reuters test collection (1996) 0.01
    0.012292883 = product of:
      0.024585767 = sum of:
        0.024585767 = product of:
          0.049171533 = sum of:
            0.049171533 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
              0.049171533 = score(doc=6971,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    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
  6. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.01
    0.012292883 = product of:
      0.024585767 = sum of:
        0.024585767 = product of:
          0.049171533 = sum of:
            0.049171533 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
              0.049171533 = score(doc=744,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    1. 8.1996 22:01:00
  7. Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.01
    0.012292883 = product of:
      0.024585767 = sum of:
        0.024585767 = product of:
          0.049171533 = sum of:
            0.049171533 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
              0.049171533 = score(doc=3572,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Online. 22(1998) no.3, S.24-26,28
  8. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.01
    0.012292883 = product of:
      0.024585767 = sum of:
        0.024585767 = product of:
          0.049171533 = sum of:
            0.049171533 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
              0.049171533 = score(doc=261,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = queryNorm
                0.30952093 = fieldWeight in 261, 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=261)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht
  9. Saracevic, T.; Mokros, H.; Su, L.: Nature of interaction between users and intermediaries in online searching : a qualitative analysis (1990) 0.01
    0.011877453 = product of:
      0.023754906 = sum of:
        0.023754906 = product of:
          0.04750981 = sum of:
            0.04750981 = weight(_text_:l in 4894) [ClassicSimilarity], result of:
              0.04750981 = score(doc=4894,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.26348472 = fieldWeight in 4894, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4894)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  10. Barry, C.L.; Schamber, L.: Users' criteria for relevance evaluation : a cross-situational comparison (1998) 0.01
    0.011877453 = product of:
      0.023754906 = sum of:
        0.023754906 = product of:
          0.04750981 = sum of:
            0.04750981 = weight(_text_:l in 3271) [ClassicSimilarity], result of:
              0.04750981 = score(doc=3271,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.26348472 = fieldWeight in 3271, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3271)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  11. MacCall, S.L.; Cleveland, A.D.: ¬A relevance-based quantitative measure for Internet information retrieval evaluation (1999) 0.01
    0.011877453 = product of:
      0.023754906 = sum of:
        0.023754906 = product of:
          0.04750981 = sum of:
            0.04750981 = weight(_text_:l in 6689) [ClassicSimilarity], result of:
              0.04750981 = score(doc=6689,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.26348472 = fieldWeight in 6689, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.046875 = fieldNorm(doc=6689)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Knowledge: creation, organization and use. Proceedings of the 62nd Annual Meeting of the American Society for Information Science, 31.10.-4.11.1999. Ed.: L. Woods
  12. Ferret, O.; Grau, B.; Hurault-Plantet, M.; Illouz, G.; Jacquemin, C.; Monceaux, L.; Robba, I.; Vilnat, A.: How NLP can improve question answering (2002) 0.01
    0.011877453 = product of:
      0.023754906 = sum of:
        0.023754906 = product of:
          0.04750981 = sum of:
            0.04750981 = weight(_text_:l in 1850) [ClassicSimilarity], result of:
              0.04750981 = score(doc=1850,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.26348472 = fieldWeight in 1850, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1850)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  13. Baillie, M.; Azzopardi, L.; Ruthven, I.: Evaluating epistemic uncertainty under incomplete assessments (2008) 0.01
    0.011877453 = product of:
      0.023754906 = sum of:
        0.023754906 = product of:
          0.04750981 = sum of:
            0.04750981 = weight(_text_:l in 2065) [ClassicSimilarity], result of:
              0.04750981 = score(doc=2065,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.26348472 = fieldWeight in 2065, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2065)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  14. Colace, F.; Santo, M. de; Greco, L.; Napoletano, P.: Improving relevance feedback-based query expansion by the use of a weighted word pairs approach (2015) 0.01
    0.011877453 = product of:
      0.023754906 = sum of:
        0.023754906 = product of:
          0.04750981 = sum of:
            0.04750981 = weight(_text_:l in 2263) [ClassicSimilarity], result of:
              0.04750981 = score(doc=2263,freq=2.0), product of:
                0.18031335 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.045365814 = queryNorm
                0.26348472 = fieldWeight in 2263, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2263)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  15. Blagden, J.F.: How much noise in a role-free and link-free co-ordinate indexing system? (1966) 0.01
    0.010756273 = product of:
      0.021512546 = sum of:
        0.021512546 = product of:
          0.04302509 = sum of:
            0.04302509 = weight(_text_:22 in 2718) [ClassicSimilarity], result of:
              0.04302509 = score(doc=2718,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = queryNorm
                0.2708308 = fieldWeight in 2718, 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=2718)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Journal of documentation. 22(1966), S.203-209
  16. Smithson, S.: Information retrieval evaluation in practice : a case study approach (1994) 0.01
    0.010756273 = product of:
      0.021512546 = sum of:
        0.021512546 = product of:
          0.04302509 = sum of:
            0.04302509 = weight(_text_:22 in 7302) [ClassicSimilarity], result of:
              0.04302509 = score(doc=7302,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    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) 0.01
    0.010756273 = product of:
      0.021512546 = sum of:
        0.021512546 = product of:
          0.04302509 = sum of:
            0.04302509 = weight(_text_:22 in 3002) [ClassicSimilarity], result of:
              0.04302509 = score(doc=3002,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    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) 0.01
    0.010756273 = product of:
      0.021512546 = sum of:
        0.021512546 = product of:
          0.04302509 = sum of:
            0.04302509 = weight(_text_:22 in 3368) [ClassicSimilarity], result of:
              0.04302509 = score(doc=3368,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 2.1996 13:14:10
  19. Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.01
    0.010756273 = product of:
      0.021512546 = sum of:
        0.021512546 = product of:
          0.04302509 = sum of:
            0.04302509 = weight(_text_:22 in 5001) [ClassicSimilarity], result of:
              0.04302509 = score(doc=5001,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = queryNorm
                0.2708308 = fieldWeight in 5001, 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=5001)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    14. 3.1996 13:22:21
  20. Brown, M.E.: By any other name : accounting for failure in the naming of subject categories (1995) 0.01
    0.010756273 = product of:
      0.021512546 = sum of:
        0.021512546 = product of:
          0.04302509 = sum of:
            0.04302509 = weight(_text_:22 in 5598) [ClassicSimilarity], result of:
              0.04302509 = score(doc=5598,freq=2.0), product of:
                0.15886335 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045365814 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    2.11.1996 13:08:22

Languages

  • e 55
  • d 3
  • f 1
  • More… Less…