Search (40 results, page 1 of 2)

  • × theme_ss:"Retrievalstudien"
  1. Schoger, A.; Frommer, J.: Heterogen - was nun? : Evaluierung heterogener bibliographischer Metadaten (2000) 0.02 
    0.016901694 = product of:
  0.10141016 = sum of:
    0.10141016 = weight(_text_:bibliothekswesen in 4465) [ClassicSimilarity], result of:
      0.10141016 = score(doc=4465,freq=2.0), product of:
        0.17158806 = queryWeight, product of:
          4.457672 = idf(docFreq=1392, maxDocs=44218)
          0.03849275 = queryNorm
        0.5910094 = fieldWeight in 4465, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.457672 = idf(docFreq=1392, maxDocs=44218)
          0.09375 = fieldNorm(doc=4465)
  0.16666667 = coord(1/6)
    Source
    Zeitschrift für Bibliothekswesen und Bibliographie. 47(2000) H.1, S.110-128
  2. Lepsky, K.; Siepmann, J.; Zimmermann, A.: Automatische Indexierung für Online-Kataloge : Ergebnisse eines Retrievaltests (1996) 0.01 
    0.009859321 = product of:
  0.059155922 = sum of:
    0.059155922 = weight(_text_:bibliothekswesen in 3251) [ClassicSimilarity], result of:
      0.059155922 = score(doc=3251,freq=2.0), product of:
        0.17158806 = queryWeight, product of:
          4.457672 = idf(docFreq=1392, maxDocs=44218)
          0.03849275 = queryNorm
        0.34475547 = fieldWeight in 3251, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.457672 = idf(docFreq=1392, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3251)
  0.16666667 = coord(1/6)
    Source
    Zeitschrift für Bibliothekswesen und Bibliographie. 43(1996) H.1, S.47-56
  3. Peritz, B.C.: On the informativeness of titles (1984) 0.01 
    0.009859321 = product of:
  0.059155922 = sum of:
    0.059155922 = weight(_text_:bibliothekswesen in 2636) [ClassicSimilarity], result of:
      0.059155922 = score(doc=2636,freq=2.0), product of:
        0.17158806 = queryWeight, product of:
          4.457672 = idf(docFreq=1392, maxDocs=44218)
          0.03849275 = queryNorm
        0.34475547 = fieldWeight in 2636, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.457672 = idf(docFreq=1392, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2636)
  0.16666667 = coord(1/6)
    Field
    Bibliothekswesen
  4. Gödert, W.; Liebig, M.: Maschinelle Indexierung auf dem Prüfstand : Ergebnisse eines Retrievaltests zum MILOS II Projekt (1997) 0.01 
    0.009859321 = product of:
  0.059155922 = sum of:
    0.059155922 = weight(_text_:bibliothekswesen in 1174) [ClassicSimilarity], result of:
      0.059155922 = score(doc=1174,freq=2.0), product of:
        0.17158806 = queryWeight, product of:
          4.457672 = idf(docFreq=1392, maxDocs=44218)
          0.03849275 = queryNorm
        0.34475547 = fieldWeight in 1174, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.457672 = idf(docFreq=1392, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1174)
  0.16666667 = coord(1/6)
    Abstract
    The test ran between Nov 95-Aug 96 in Cologne Fachhochschule fur Bibliothekswesen (College of Librarianship).The test basis was a database of 190,000 book titles published between 1990-95. MILOS II mechanized indexing methods proved helpful in avoiding or reducing numbers of unsatisfied/no result retrieval searches. Retrieval from mechanised indexing is 3 times more successful than from title keyword data. MILOS II also used a standardized semantic vocabulary. Mechanised indexing demands high quality software and output data
  5. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01 
    0.006084442 = product of:
  0.036506653 = sum of:
    0.036506653 = product of:
      0.073013306 = sum of:
        0.073013306 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
          0.073013306 = score(doc=262,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Date
    20.10.2000 12:22:23
  6. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.01 
    0.006084442 = product of:
  0.036506653 = sum of:
    0.036506653 = product of:
      0.073013306 = sum of:
        0.073013306 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
          0.073013306 = score(doc=6418,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Source
    Online. 22(1998) no.6, S.57-58
  7. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.01 
    0.006084442 = product of:
  0.036506653 = sum of:
    0.036506653 = product of:
      0.073013306 = sum of:
        0.073013306 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
          0.073013306 = score(doc=6438,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Date
    11. 8.2001 16:22:19
  8. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.01 
    0.006084442 = product of:
  0.036506653 = sum of:
    0.036506653 = product of:
      0.073013306 = sum of:
        0.073013306 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
          0.073013306 = score(doc=5089,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Date
    22. 7.2006 18:43:54
  9. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.00 
    0.0043460308 = product of:
  0.026076183 = sum of:
    0.026076183 = product of:
      0.052152365 = sum of:
        0.052152365 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
          0.052152365 = score(doc=3103,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Date
    27. 2.1999 20:55:22
  10. 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 
    0.0043460308 = product of:
  0.026076183 = sum of:
    0.026076183 = product of:
      0.052152365 = sum of:
        0.052152365 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
          0.052152365 = score(doc=3107,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Date
    27. 2.1999 20:59:22
  11. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.00 
    0.0043460308 = product of:
  0.026076183 = sum of:
    0.026076183 = product of:
      0.052152365 = sum of:
        0.052152365 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
          0.052152365 = score(doc=2417,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Pages
    S.22-25
  12. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.00 
    0.0034768244 = product of:
  0.020860946 = sum of:
    0.020860946 = product of:
      0.04172189 = sum of:
        0.04172189 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.04172189 = score(doc=5002,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Date
    19. 3.1996 11:22:12
  13. Sanderson, M.: ¬The Reuters test collection (1996) 0.00 
    0.0034768244 = product of:
  0.020860946 = sum of:
    0.020860946 = product of:
      0.04172189 = sum of:
        0.04172189 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
          0.04172189 = score(doc=6971,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    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
  14. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.00 
    0.0034768244 = product of:
  0.020860946 = sum of:
    0.020860946 = product of:
      0.04172189 = sum of:
        0.04172189 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
          0.04172189 = score(doc=744,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Date
    1. 8.1996 22:01:00
  15. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.00 
    0.0034768244 = product of:
  0.020860946 = sum of:
    0.020860946 = product of:
      0.04172189 = sum of:
        0.04172189 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
          0.04172189 = score(doc=3087,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    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
  16. Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.00 
    0.0034768244 = product of:
  0.020860946 = sum of:
    0.020860946 = product of:
      0.04172189 = sum of:
        0.04172189 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
          0.04172189 = score(doc=3572,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Source
    Online. 22(1998) no.3, S.24-26,28
  17. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.00 
    0.0034768244 = product of:
  0.020860946 = sum of:
    0.020860946 = product of:
      0.04172189 = sum of:
        0.04172189 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
          0.04172189 = score(doc=261,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    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
  18. Ellis, D.: Progress and problems in information retrieval (1996) 0.00 
    0.0034768244 = product of:
  0.020860946 = sum of:
    0.020860946 = product of:
      0.04172189 = sum of:
        0.04172189 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
          0.04172189 = score(doc=789,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    Date
    26. 7.2002 20:22:46
  19. ¬The Eleventh Text Retrieval Conference, TREC 2002 (2003) 0.00 
    0.0034768244 = product of:
  0.020860946 = sum of:
    0.020860946 = product of:
      0.04172189 = sum of:
        0.04172189 = weight(_text_:22 in 4049) [ClassicSimilarity], result of:
          0.04172189 = score(doc=4049,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)
    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.
  20. Blagden, J.F.: How much noise in a role-free and link-free co-ordinate indexing system? (1966) 0.00 
    0.003042221 = product of:
  0.018253326 = sum of:
    0.018253326 = product of:
      0.036506653 = sum of:
        0.036506653 = weight(_text_:22 in 2718) [ClassicSimilarity], result of:
          0.036506653 = score(doc=2718,freq=2.0), product of:
            0.13479505 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03849275 = 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)
  0.16666667 = coord(1/6)
    Source
    Journal of documentation. 22(1966), S.203-209

Authors

Years

Languages

  • e 32
  • d 6
  • f 1
  • More… Less…

Types

  • a 36
  • s 3
  • m 2
  • More… Less…

Themes