Search (25 results, page 1 of 2)

  • × year_i:[2000 TO 2010}
  • × theme_ss:"Retrievalstudien"
  1. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.04
    0.040322956 = product of:
      0.10080738 = sum of:
        0.04425738 = weight(_text_:21 in 261) [ClassicSimilarity], result of:
          0.04425738 = score(doc=261,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.27382088 = fieldWeight in 261, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.0625 = fieldNorm(doc=261)
        0.056550004 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
          0.056550004 = score(doc=261,freq=2.0), product of:
            0.1827017 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052173212 = 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)
      0.4 = coord(2/5)
    
    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
    Date
    21. 2.1997 19:37:24
  2. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.02
    0.0197925 = product of:
      0.0989625 = sum of:
        0.0989625 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
          0.0989625 = score(doc=6438,freq=2.0), product of:
            0.1827017 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052173212 = 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)
      0.2 = coord(1/5)
    
    Date
    11. 8.2001 16:22:19
  3. Harman, D.K.: ¬The TREC test collections (2005) 0.02
    0.015490084 = product of:
      0.07745042 = sum of:
        0.07745042 = weight(_text_:21 in 4637) [ClassicSimilarity], result of:
          0.07745042 = score(doc=4637,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.47918653 = fieldWeight in 4637, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.109375 = fieldNorm(doc=4637)
      0.2 = coord(1/5)
    
    Pages
    S.21-52
  4. Rao, A.; Lu, A.; Meier, E.; Ahmed, S.; Pliske, D.: Query processing in TREC6 (2000) 0.02
    0.015490084 = product of:
      0.07745042 = sum of:
        0.07745042 = weight(_text_:21 in 6420) [ClassicSimilarity], result of:
          0.07745042 = score(doc=6420,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.47918653 = fieldWeight in 6420, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.109375 = fieldNorm(doc=6420)
      0.2 = coord(1/5)
    
    Date
    10. 8.2001 21:34:02
  5. Robertson, S.E.; Walker, S.; Beaulieu, M.: Experimentation as a way of life : Okapi at TREC (2000) 0.01
    0.013277213 = product of:
      0.06638607 = sum of:
        0.06638607 = weight(_text_:21 in 6030) [ClassicSimilarity], result of:
          0.06638607 = score(doc=6030,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.41073132 = fieldWeight in 6030, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.09375 = fieldNorm(doc=6030)
      0.2 = coord(1/5)
    
    Date
    10. 8.2001 21:28:39
  6. Schoger, A.; Frommer, J.: Heterogen - was nun? : Evaluierung heterogener bibliographischer Metadaten (2000) 0.01
    0.013277213 = product of:
      0.06638607 = sum of:
        0.06638607 = weight(_text_:21 in 4465) [ClassicSimilarity], result of:
          0.06638607 = score(doc=4465,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.41073132 = fieldWeight in 4465, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.09375 = fieldNorm(doc=4465)
      0.2 = coord(1/5)
    
    Date
    17.12.1996 21:11:09
  7. ¬The Eleventh Text Retrieval Conference, TREC 2002 (2003) 0.01
    0.011310001 = product of:
      0.056550004 = sum of:
        0.056550004 = weight(_text_:22 in 4049) [ClassicSimilarity], result of:
          0.056550004 = score(doc=4049,freq=2.0), product of:
            0.1827017 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052173212 = queryNorm
            0.30952093 = fieldWeight in 4049, 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=4049)
      0.2 = coord(1/5)
    
    Abstract
    Proceedings of the llth TREC-conference held in Gaithersburg, Maryland (USA), November 19-22, 2002. Aim of the conference was discussion an retrieval and related information-seeking tasks for large test collection. 93 research groups used different techniques, for information retrieval from the same large database. This procedure makes it possible to compare the results. The tasks are: Cross-language searching, filtering, interactive searching, searching for novelty, question answering, searching for video shots, and Web searching.
  8. Heinz, M.; Voigt, H.: Aufbau einer Suchmaschine für ein Forschungsinstitut : Aufgabe für die Bibliothek? (2000) 0.01
    0.008851476 = product of:
      0.04425738 = sum of:
        0.04425738 = weight(_text_:21 in 5234) [ClassicSimilarity], result of:
          0.04425738 = score(doc=5234,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.27382088 = fieldWeight in 5234, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.0625 = fieldNorm(doc=5234)
      0.2 = coord(1/5)
    
    Date
    21. 2.1997 19:37:24
  9. Mandl, T.: Web- und Multimedia-Dokumente : Neuere Entwicklungen bei der Evaluierung von Information Retrieval Systemen (2003) 0.01
    0.008851476 = product of:
      0.04425738 = sum of:
        0.04425738 = weight(_text_:21 in 1734) [ClassicSimilarity], result of:
          0.04425738 = score(doc=1734,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.27382088 = fieldWeight in 1734, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.0625 = fieldNorm(doc=1734)
      0.2 = coord(1/5)
    
    Date
    21. 2.1997 19:37:24
  10. Grasso, L.L.; Wahlig, H.: Google und seine Suchparameter : Eine Top 20-Precision Analyse anhand repräsentativ ausgewählter Anfragen (2005) 0.01
    0.008851476 = product of:
      0.04425738 = sum of:
        0.04425738 = weight(_text_:21 in 3275) [ClassicSimilarity], result of:
          0.04425738 = score(doc=3275,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.27382088 = fieldWeight in 3275, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.0625 = fieldNorm(doc=3275)
      0.2 = coord(1/5)
    
    Date
    21. 2.1997 19:37:24
  11. Voorhees, E.M.: Text REtrieval Conference (TREC) (2009) 0.01
    0.008851476 = product of:
      0.04425738 = sum of:
        0.04425738 = weight(_text_:21 in 3890) [ClassicSimilarity], result of:
          0.04425738 = score(doc=3890,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.27382088 = fieldWeight in 3890, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.0625 = fieldNorm(doc=3890)
      0.2 = coord(1/5)
    
    Date
    27. 8.2011 14:31:21
  12. Leininger, K.: Interindexer consistency in PsychINFO (2000) 0.01
    0.0084825 = product of:
      0.0424125 = sum of:
        0.0424125 = weight(_text_:22 in 2552) [ClassicSimilarity], result of:
          0.0424125 = score(doc=2552,freq=2.0), product of:
            0.1827017 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052173212 = queryNorm
            0.23214069 = fieldWeight in 2552, 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=2552)
      0.2 = coord(1/5)
    
    Date
    9. 2.1997 18:44:22
  13. Kluck, M.; Mandl, T.; Womser-Hacker, C.: Cross-Language Evaluation Forum (CLEF) : Europäische Initiative zur Bewertung sprachübergreifender Retrievalverfahren (2002) 0.01
    0.007745042 = product of:
      0.03872521 = sum of:
        0.03872521 = weight(_text_:21 in 266) [ClassicSimilarity], result of:
          0.03872521 = score(doc=266,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.23959327 = fieldWeight in 266, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.0546875 = fieldNorm(doc=266)
      0.2 = coord(1/5)
    
    Date
    21. 2.1997 19:37:24
  14. Della Mea, V.; Mizzaro, S.: Measuring retrieval effectiveness : a new proposal and a first experimental validation (2004) 0.01
    0.007745042 = product of:
      0.03872521 = sum of:
        0.03872521 = weight(_text_:21 in 2263) [ClassicSimilarity], result of:
          0.03872521 = score(doc=2263,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.23959327 = fieldWeight in 2263, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2263)
      0.2 = coord(1/5)
    
    Date
    6. 6.2004 21:08:50
  15. Fugmann, R.: ¬Das Faule Ei des Kolumbus im Aslib-Cranfield Vergleich von Informationssystemen : Die erneute Betrachtung eines einflussreichen Experiments (2004) 0.01
    0.007745042 = product of:
      0.03872521 = sum of:
        0.03872521 = weight(_text_:21 in 2364) [ClassicSimilarity], result of:
          0.03872521 = score(doc=2364,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.23959327 = fieldWeight in 2364, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2364)
      0.2 = coord(1/5)
    
    Date
    21. 2.1997 19:37:24
  16. King, D.W.: Blazing new trails : in celebration of an audacious career (2000) 0.01
    0.0070687504 = product of:
      0.03534375 = sum of:
        0.03534375 = weight(_text_:22 in 1184) [ClassicSimilarity], result of:
          0.03534375 = score(doc=1184,freq=2.0), product of:
            0.1827017 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052173212 = queryNorm
            0.19345059 = fieldWeight in 1184, 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=1184)
      0.2 = coord(1/5)
    
    Date
    22. 9.1997 19:16:05
  17. Petrelli, D.: On the role of user-centred evaluation in the advancement of interactive information retrieval (2008) 0.01
    0.0070687504 = product of:
      0.03534375 = sum of:
        0.03534375 = weight(_text_:22 in 2026) [ClassicSimilarity], result of:
          0.03534375 = score(doc=2026,freq=2.0), product of:
            0.1827017 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052173212 = queryNorm
            0.19345059 = fieldWeight in 2026, 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=2026)
      0.2 = coord(1/5)
    
    Source
    Information processing and management. 44(2008) no.1, S.22-38
  18. Rapke, K.: Automatische Indexierung von Volltexten für die Gruner+Jahr Pressedatenbank (2001) 0.01
    0.0066386065 = product of:
      0.033193033 = sum of:
        0.033193033 = weight(_text_:21 in 6386) [ClassicSimilarity], result of:
          0.033193033 = score(doc=6386,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.20536566 = fieldWeight in 6386, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.046875 = fieldNorm(doc=6386)
      0.2 = coord(1/5)
    
    Date
    21. 2.1997 19:37:24
  19. 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
    0.0066386065 = product of:
      0.033193033 = sum of:
        0.033193033 = weight(_text_:21 in 1850) [ClassicSimilarity], result of:
          0.033193033 = score(doc=1850,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.20536566 = fieldWeight in 1850, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.046875 = fieldNorm(doc=1850)
      0.2 = coord(1/5)
    
    Date
    21. 2.2007 13:16:57
  20. Blandford, A.; Adams, A.; Attfield, S.; Buchanan, G.; Gow, J.; Makri, S.; Rimmer, J.; Warwick, C.: ¬The PRET A Rapporter framework : evaluating digital libraries from the perspective of information work (2008) 0.01
    0.0066386065 = product of:
      0.033193033 = sum of:
        0.033193033 = weight(_text_:21 in 2021) [ClassicSimilarity], result of:
          0.033193033 = score(doc=2021,freq=2.0), product of:
            0.16162895 = queryWeight, product of:
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.052173212 = queryNorm
            0.20536566 = fieldWeight in 2021, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0979297 = idf(docFreq=5425, maxDocs=44218)
              0.046875 = fieldNorm(doc=2021)
      0.2 = coord(1/5)
    
    Source
    Information processing and management. 44(2008) no.1, S.4-21