Search (9 results, page 1 of 1)

  • × year_i:[1980 TO 1990}
  • × theme_ss:"Retrievalstudien"
  1. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.02
    0.023664711 = product of:
      0.059161775 = sum of:
        0.019808484 = product of:
          0.03961697 = sum of:
            0.03961697 = weight(_text_:h in 262) [ClassicSimilarity], result of:
              0.03961697 = score(doc=262,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.38429362 = fieldWeight in 262, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.109375 = fieldNorm(doc=262)
          0.5 = coord(1/2)
        0.039353292 = product of:
          0.078706585 = sum of:
            0.078706585 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.078706585 = score(doc=262,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = 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)
      0.4 = coord(2/5)
    
    Date
    20.10.2000 12:22:23
    Source
    Deutscher Dokumentartag 1983, Göttingen, 3.-7.10.1983: Fachinformation und Bildschirmtext. Bearb.: H. Strohl-Goebel
  2. Kilgour, F.G.: Retrieval on information from computerized book texts (1989) 0.01
    0.011797213 = product of:
      0.058986064 = sum of:
        0.058986064 = weight(_text_:u in 2965) [ClassicSimilarity], result of:
          0.058986064 = score(doc=2965,freq=2.0), product of:
            0.13587062 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.041494254 = queryNorm
            0.43413407 = fieldWeight in 2965, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.09375 = fieldNorm(doc=2965)
      0.2 = coord(1/5)
    
    Source
    Academic librarianship past, present, and future. A festschrift in honor of David Kaser: Ed. by J. Richardson u. J.Y. Davis
  3. Evans, L.: ¬An experiment : search strategy variations in SDI (1981) 0.01
    0.011588076 = product of:
      0.05794038 = sum of:
        0.05794038 = product of:
          0.11588076 = sum of:
            0.11588076 = weight(_text_:l in 3158) [ClassicSimilarity], result of:
              0.11588076 = score(doc=3158,freq=2.0), product of:
                0.16492525 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.041494254 = queryNorm
                0.70262593 = fieldWeight in 3158, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.125 = fieldNorm(doc=3158)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
  4. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.01
    0.005621899 = product of:
      0.028109495 = sum of:
        0.028109495 = product of:
          0.05621899 = sum of:
            0.05621899 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
              0.05621899 = score(doc=2417,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = queryNorm
                0.38690117 = fieldWeight in 2417, 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=2417)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
    Pages
    S.22-25
  5. Information retrieval experiment (1981) 0.01
    0.0050697834 = product of:
      0.025348917 = sum of:
        0.025348917 = product of:
          0.050697833 = sum of:
            0.050697833 = weight(_text_:l in 2653) [ClassicSimilarity], result of:
              0.050697833 = score(doc=2653,freq=2.0), product of:
                0.16492525 = queryWeight, product of:
                  3.9746525 = idf(docFreq=2257, maxDocs=44218)
                  0.041494254 = queryNorm
                0.30739886 = fieldWeight in 2653, 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=2653)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
    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
  6. Ongering, H.; Riesthuis, G.J.A.: ¬De ontsluiting in het ADION-systeem : precision en recall (1989) 0.00
    0.0045276536 = product of:
      0.022638267 = sum of:
        0.022638267 = product of:
          0.045276534 = sum of:
            0.045276534 = weight(_text_:h in 416) [ClassicSimilarity], result of:
              0.045276534 = score(doc=416,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.4391927 = fieldWeight in 416, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.125 = fieldNorm(doc=416)
          0.5 = coord(1/2)
      0.2 = coord(1/5)
    
  7. Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.00
    0.003935329 = product of:
      0.019676646 = sum of:
        0.019676646 = product of:
          0.039353292 = sum of:
            0.039353292 = weight(_text_:22 in 5001) [ClassicSimilarity], result of:
              0.039353292 = score(doc=5001,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = 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)
      0.2 = coord(1/5)
    
    Date
    14. 3.1996 13:22:21
  8. Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.00
    0.003373139 = product of:
      0.016865695 = sum of:
        0.016865695 = product of:
          0.03373139 = sum of:
            0.03373139 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
              0.03373139 = score(doc=3564,freq=2.0), product of:
                0.14530581 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.041494254 = 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)
      0.2 = coord(1/5)
    
    Date
    9. 1.1996 10:22:31
  9. Madelung, H.-O.: Subject searching in the social sciences : a comparison of PRECIS and KWIC indexes indexes to newspaper articles (1982) 0.00
    0.0019808484 = product of:
      0.009904242 = sum of:
        0.009904242 = product of:
          0.019808484 = sum of:
            0.019808484 = weight(_text_:h in 5517) [ClassicSimilarity], result of:
              0.019808484 = score(doc=5517,freq=2.0), product of:
                0.10309036 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.041494254 = queryNorm
                0.19214681 = fieldWeight in 5517, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5517)
          0.5 = coord(1/2)
      0.2 = coord(1/5)