Search (74 results, page 1 of 4)

  • × theme_ss:"Retrievalstudien"
  1. Sanderson, M.: ¬The Reuters test collection (1996) 0.05 
    0.052004606 = product of:
  0.10400921 = sum of:
    0.10400921 = sum of:
      0.049081944 = weight(_text_:r in 6971) [ClassicSimilarity], result of:
        0.049081944 = score(doc=6971,freq=2.0), product of:
          0.1677509 = queryWeight, product of:
            3.3102584 = idf(docFreq=4387, maxDocs=44218)
            0.050676074 = queryNorm
          0.29258826 = fieldWeight in 6971, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.3102584 = idf(docFreq=4387, maxDocs=44218)
            0.0625 = fieldNorm(doc=6971)
      0.054927267 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
        0.054927267 = score(doc=6971,freq=2.0), product of:
          0.17745897 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.050676074 = 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)
    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
  2. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.05 
    0.052004606 = product of:
  0.10400921 = sum of:
    0.10400921 = sum of:
      0.049081944 = weight(_text_:r in 261) [ClassicSimilarity], result of:
        0.049081944 = score(doc=261,freq=2.0), product of:
          0.1677509 = queryWeight, product of:
            3.3102584 = idf(docFreq=4387, maxDocs=44218)
            0.050676074 = queryNorm
          0.29258826 = fieldWeight in 261, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.3102584 = idf(docFreq=4387, maxDocs=44218)
            0.0625 = fieldNorm(doc=261)
      0.054927267 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
        0.054927267 = score(doc=261,freq=2.0), product of:
          0.17745897 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.050676074 = 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)
    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
  3. Wood, F.; Ford, N.; Miller, D.; Sobczyk, G.; Duffin, R.: Information skills, searching behaviour and cognitive styles for student-centred learning : a computer-assisted learning approach (1996) 0.04 
    0.039003454 = product of:
  0.07800691 = sum of:
    0.07800691 = sum of:
      0.03681146 = weight(_text_:r in 4341) [ClassicSimilarity], result of:
        0.03681146 = score(doc=4341,freq=2.0), product of:
          0.1677509 = queryWeight, product of:
            3.3102584 = idf(docFreq=4387, maxDocs=44218)
            0.050676074 = queryNorm
          0.2194412 = fieldWeight in 4341, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.3102584 = idf(docFreq=4387, maxDocs=44218)
            0.046875 = fieldNorm(doc=4341)
      0.04119545 = weight(_text_:22 in 4341) [ClassicSimilarity], result of:
        0.04119545 = score(doc=4341,freq=2.0), product of:
          0.17745897 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.050676074 = queryNorm
          0.23214069 = fieldWeight in 4341, 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=4341)
  0.5 = coord(1/2)
    Source
    Journal of information science. 22(1996) no.2, S.79-92
  4. Crestani, F.; Rijsbergen, C.J. van: Information retrieval by imaging (1996) 0.04 
    0.039003454 = product of:
  0.07800691 = sum of:
    0.07800691 = sum of:
      0.03681146 = weight(_text_:r in 6967) [ClassicSimilarity], result of:
        0.03681146 = score(doc=6967,freq=2.0), product of:
          0.1677509 = queryWeight, product of:
            3.3102584 = idf(docFreq=4387, maxDocs=44218)
            0.050676074 = queryNorm
          0.2194412 = fieldWeight in 6967, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.3102584 = idf(docFreq=4387, maxDocs=44218)
            0.046875 = fieldNorm(doc=6967)
      0.04119545 = weight(_text_:22 in 6967) [ClassicSimilarity], result of:
        0.04119545 = score(doc=6967,freq=2.0), product of:
          0.17745897 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.050676074 = queryNorm
          0.23214069 = fieldWeight in 6967, 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=6967)
  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
  5. Cuadra, C.A.; Katter, R.V.: Experimental studies of relevance judgements: final report : Vol.2: description of individual studies (1967) 0.02 
    0.024540972 = product of:
  0.049081944 = sum of:
    0.049081944 = product of:
      0.09816389 = sum of:
        0.09816389 = weight(_text_:r in 5356) [ClassicSimilarity], result of:
          0.09816389 = score(doc=5356,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.5851765 = fieldWeight in 5356, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.125 = fieldNorm(doc=5356)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Type
    r
  6. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.02 
    0.024030678 = product of:
  0.048061356 = sum of:
    0.048061356 = product of:
      0.09612271 = sum of:
        0.09612271 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
          0.09612271 = score(doc=262,freq=2.0), product of:
            0.17745897 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050676074 = 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)
  0.5 = coord(1/2)
    Date
    20.10.2000 12:22:23
  7. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.02 
    0.024030678 = product of:
  0.048061356 = sum of:
    0.048061356 = product of:
      0.09612271 = sum of:
        0.09612271 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
          0.09612271 = score(doc=6418,freq=2.0), product of:
            0.17745897 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050676074 = 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)
  0.5 = coord(1/2)
    Source
    Online. 22(1998) no.6, S.57-58
  8. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.02 
    0.024030678 = product of:
  0.048061356 = sum of:
    0.048061356 = product of:
      0.09612271 = sum of:
        0.09612271 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
          0.09612271 = score(doc=6438,freq=2.0), product of:
            0.17745897 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050676074 = 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)
  0.5 = coord(1/2)
    Date
    11. 8.2001 16:22:19
  9. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.02 
    0.024030678 = product of:
  0.048061356 = sum of:
    0.048061356 = product of:
      0.09612271 = sum of:
        0.09612271 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
          0.09612271 = score(doc=5089,freq=2.0), product of:
            0.17745897 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050676074 = 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)
  0.5 = coord(1/2)
    Date
    22. 7.2006 18:43:54
  10. Robertson, S.E.; Thompson, C.L.: ¬An operational evaluation of weighting, ranking and relevance feedback via a front-end system (1987) 0.02 
    0.02147335 = product of:
  0.0429467 = sum of:
    0.0429467 = product of:
      0.0858934 = sum of:
        0.0858934 = weight(_text_:r in 3858) [ClassicSimilarity], result of:
          0.0858934 = score(doc=3858,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.51202947 = fieldWeight in 3858, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.109375 = fieldNorm(doc=3858)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Type
    r
  11. Hancock-Beaulieu, M.; McKenzie, L.; Irving, A.: Evaluative protocols for searching behaviour in online library catalogues (1991) 0.02 
    0.02147335 = product of:
  0.0429467 = sum of:
    0.0429467 = product of:
      0.0858934 = sum of:
        0.0858934 = weight(_text_:r in 347) [ClassicSimilarity], result of:
          0.0858934 = score(doc=347,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.51202947 = fieldWeight in 347, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.109375 = fieldNorm(doc=347)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Type
    r
  12. Grunder, R.: Qualitätskriterien für Datenbanken : Grundsätzliche Überlegungen und Untersuchung ausgewählter Aspekte am Beispiel bibliographischer Online-Datenbanken (1995) 0.02 
    0.02147335 = product of:
  0.0429467 = sum of:
    0.0429467 = product of:
      0.0858934 = sum of:
        0.0858934 = weight(_text_:r in 7107) [ClassicSimilarity], result of:
          0.0858934 = score(doc=7107,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.51202947 = fieldWeight in 7107, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.109375 = fieldNorm(doc=7107)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  13. Voorbij, H.: Titelwoorden - trefwoorden : een vergelijkend onderzoek (1997) 0.02 
    0.02147335 = product of:
  0.0429467 = sum of:
    0.0429467 = product of:
      0.0858934 = sum of:
        0.0858934 = weight(_text_:r in 3175) [ClassicSimilarity], result of:
          0.0858934 = score(doc=3175,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.51202947 = fieldWeight in 3175, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.109375 = fieldNorm(doc=3175)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Type
    r
  14. Krause, J.; Mutschke, P.: Indexierung und Fulcrum-Evaluierung (1999) 0.02 
    0.02147335 = product of:
  0.0429467 = sum of:
    0.0429467 = product of:
      0.0858934 = sum of:
        0.0858934 = weight(_text_:r in 6256) [ClassicSimilarity], result of:
          0.0858934 = score(doc=6256,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.51202947 = fieldWeight in 6256, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.109375 = fieldNorm(doc=6256)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Type
    r
  15. Aitchison, T.M.: Comparative evaluation of index languages : Part I, Design. Part II, Results (1969) 0.02 
    0.02147335 = product of:
  0.0429467 = sum of:
    0.0429467 = product of:
      0.0858934 = sum of:
        0.0858934 = weight(_text_:r in 561) [ClassicSimilarity], result of:
          0.0858934 = score(doc=561,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.51202947 = fieldWeight in 561, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.109375 = fieldNorm(doc=561)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Type
    r
  16. Airio, E.: Who benefits from CLIR in web retrieval? (2008) 0.02 
    0.018963898 = product of:
  0.037927795 = sum of:
    0.037927795 = product of:
      0.15171118 = sum of:
        0.15171118 = weight(_text_:author's in 2342) [ClassicSimilarity], result of:
          0.15171118 = score(doc=2342,freq=2.0), product of:
            0.340551 = queryWeight, product of:
              6.7201533 = idf(docFreq=144, maxDocs=44218)
              0.050676074 = queryNorm
            0.44548744 = fieldWeight in 2342, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.7201533 = idf(docFreq=144, maxDocs=44218)
              0.046875 = fieldNorm(doc=2342)
      0.25 = coord(1/4)
  0.5 = coord(1/2)
    Abstract
    Purpose - The aim of the current paper is to test whether query translation is beneficial in web retrieval. Design/methodology/approach - The language pairs were Finnish-Swedish, English-German and Finnish-French. A total of 12-18 participants were recruited for each language pair. Each participant performed four retrieval tasks. The author's aim was to compare the performance of the translated queries with that of the target language queries. Thus, the author asked participants to formulate a source language query and a target language query for each task. The source language queries were translated into the target language utilizing a dictionary-based system. In English-German, also machine translation was utilized. The author used Google as the search engine. Findings - The results differed depending on the language pair. The author concluded that the dictionary coverage had an effect on the results. On average, the results of query-translation were better than in the traditional laboratory tests. Originality/value - This research shows that query translation in web is beneficial especially for users with moderate and non-active language skills. This is valuable information for developers of cross-language information retrieval systems.
  17. Burnett, M.; Fisher, C.; Jones, R.: InTEXT precision indexing in TREC4 (1996) 0.02 
    0.01840573 = product of:
  0.03681146 = sum of:
    0.03681146 = product of:
      0.07362292 = sum of:
        0.07362292 = weight(_text_:r in 7529) [ClassicSimilarity], result of:
          0.07362292 = score(doc=7529,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.4388824 = fieldWeight in 7529, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.09375 = fieldNorm(doc=7529)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  18. Burnett, M.; Jones, R.; Pape, L.: InTEXT automatic query enhancements in TREC-5 (1997) 0.02 
    0.01840573 = product of:
  0.03681146 = sum of:
    0.03681146 = product of:
      0.07362292 = sum of:
        0.07362292 = weight(_text_:r in 3091) [ClassicSimilarity], result of:
          0.07362292 = score(doc=3091,freq=2.0), product of:
            0.1677509 = queryWeight, product of:
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.050676074 = queryNorm
            0.4388824 = fieldWeight in 3091, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.3102584 = idf(docFreq=4387, maxDocs=44218)
              0.09375 = fieldNorm(doc=3091)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  19. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.02 
    0.01716477 = product of:
  0.03432954 = sum of:
    0.03432954 = product of:
      0.06865908 = sum of:
        0.06865908 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
          0.06865908 = score(doc=3103,freq=2.0), product of:
            0.17745897 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050676074 = 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)
  0.5 = coord(1/2)
    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) 0.02 
    0.01716477 = product of:
  0.03432954 = sum of:
    0.03432954 = product of:
      0.06865908 = sum of:
        0.06865908 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
          0.06865908 = score(doc=3107,freq=2.0), product of:
            0.17745897 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050676074 = 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)
  0.5 = coord(1/2)
    Date
    27. 2.1999 20:59:22

Authors

Years

Languages

  • e 56
  • d 15
  • f 1
  • nl 1
  • More… Less…

Types

  • a 55
  • r 12
  • s 5
  • m 3
  • x 1
  • More… Less…

Themes

Subjects

Classifications