Search (82 results, page 1 of 5)

  • × theme_ss:"Retrievalstudien"
  1. Pao, M.L.: Retrieval differences between term and citation indexing (1989) 0.06
    0.061957862 = product of:
      0.123915724 = sum of:
        0.123915724 = product of:
          0.37174717 = sum of:
            0.37174717 = weight(_text_:28.8 in 3566) [ClassicSimilarity], result of:
              0.37174717 = score(doc=3566,freq=2.0), product of:
                0.44273564 = queryWeight, product of:
                  9.499662 = idf(docFreq=8, maxDocs=44218)
                  0.04660541 = queryNorm
                0.83965945 = fieldWeight in 3566, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  9.499662 = idf(docFreq=8, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3566)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Information, knowledge, evolution. Proceedings of the 44th FID congress, Helsinki, 28.8.-1.9.1988. Ed. by S. Koshiala and R. Launo
  2. Pirkola, A.; Jarvelin, K.: ¬The effect of anaphor and ellipsis resolution on proximity searching in a text database (1995) 0.04
    0.038723666 = product of:
      0.07744733 = sum of:
        0.07744733 = product of:
          0.23234199 = sum of:
            0.23234199 = weight(_text_:28.8 in 4088) [ClassicSimilarity], result of:
              0.23234199 = score(doc=4088,freq=2.0), product of:
                0.44273564 = queryWeight, product of:
                  9.499662 = idf(docFreq=8, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5247872 = fieldWeight in 4088, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  9.499662 = idf(docFreq=8, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4088)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Abstract
    So far, methods for ellipsis and anaphor resolution have been developed and the effects of anaphor resolution have been analyzed in the context of statistical information retrieval of scientific abstracts. No significant improvements has been observed. Analyzes the effects of ellipsis and anaphor resolution on proximity searching in a full text database. Anaphora and ellipsis are classified on the basis of the type of their correlates / antecedents rather than, as traditional, on the basis of their own linguistic type. The classification differentiates proper names and common nouns of basic words, compound words, and phrases. The study was carried out in a newspaper article database containing 55.000 full text articles. A set of 154 keyword pairs in different categories was created. Human resolution of keyword ellipsis and anaphora was performed to identify sentences and paragraphs which would match proximity searches after resolution. Findings indicate that ellipsis and anaphor resolution is most relevant for proper name phrases and only marginal in the other keyword categories. Therefore the recall effect of restricted resolution of proper name phrases only was analyzed for keyword pairs containing at least 1 proper name phrase. Findings indicate a recall increase of 38.2% in sentence searches, and 28.8% in paragraph searches when proper name ellipsis were resolved. The recall increase was 17.6% sentence searches, and 19.8% in paragraph searches when proper name anaphora were resolved. Some simple and computationally justifiable resolution method might be developed only for proper name phrases to support keyword based full text information retrieval. Discusses elements of such a method
  3. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.03
    0.033829592 = product of:
      0.067659184 = sum of:
        0.067659184 = product of:
          0.10148877 = sum of:
            0.050973658 = weight(_text_:29 in 5002) [ClassicSimilarity], result of:
              0.050973658 = score(doc=5002,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.31092256 = fieldWeight in 5002, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5002)
            0.050515115 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.050515115 = score(doc=5002,freq=2.0), product of:
                0.1632042 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04660541 = 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)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Date
    19. 3.1996 11:22:12
    Source
    Journal of documentation. 29(1973) no.3, S.251-257
  4. Chu, H.: Factors affecting relevance judgment : a report from TREC Legal track (2011) 0.02
    0.021143496 = product of:
      0.042286992 = sum of:
        0.042286992 = product of:
          0.06343049 = sum of:
            0.031858537 = weight(_text_:29 in 4540) [ClassicSimilarity], result of:
              0.031858537 = score(doc=4540,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.19432661 = fieldWeight in 4540, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4540)
            0.031571947 = weight(_text_:22 in 4540) [ClassicSimilarity], result of:
              0.031571947 = score(doc=4540,freq=2.0), product of:
                0.1632042 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04660541 = queryNorm
                0.19345059 = fieldWeight in 4540, 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=4540)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Date
    12. 7.2011 18:29:22
  5. Hofstede, M.: Literatuur over onderwerpen zoeken in de OPC (1994) 0.02
    0.01699122 = product of:
      0.03398244 = sum of:
        0.03398244 = product of:
          0.101947315 = sum of:
            0.101947315 = weight(_text_:29 in 5400) [ClassicSimilarity], result of:
              0.101947315 = score(doc=5400,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.6218451 = fieldWeight in 5400, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.125 = fieldNorm(doc=5400)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    CRI bulletin. 29(1994), Sept., S.14-15
  6. Hancock-Beaulieu, M.; McKenzie, L.; Irving, A.: Evaluative protocols for searching behaviour in online library catalogues (1991) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 347) [ClassicSimilarity], result of:
              0.0892039 = score(doc=347,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 347, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=347)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    23. 1.1999 19:52:29
  7. Harman, D.K.: ¬The TREC test collections (2005) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 4637) [ClassicSimilarity], result of:
              0.0892039 = score(doc=4637,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 4637, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4637)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    29. 3.1996 18:16:49
  8. Buckley, C.; Voorhees, E.M.: Retrieval system evaluation (2005) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 648) [ClassicSimilarity], result of:
              0.0892039 = score(doc=648,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 648, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=648)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    29. 3.1996 18:16:49
  9. Voiskunskii, V.G.: Evaluation of search results (2000) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 4670) [ClassicSimilarity], result of:
              0.0892039 = score(doc=4670,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 4670, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4670)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Encyclopedia of library and information science. Vol.66, [=Suppl.29]
  10. Harman, D.K.: ¬The TREC ad hoc experiments (2005) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 5711) [ClassicSimilarity], result of:
              0.0892039 = score(doc=5711,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 5711, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=5711)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    29. 3.1996 18:16:49
  11. Robertson, S.; Callan, J.: Routing and filtering (2005) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 4688) [ClassicSimilarity], result of:
              0.0892039 = score(doc=4688,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 4688, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4688)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    29. 3.1996 18:16:49
  12. Beaulieu, M.: Approaches to user-based studies in information seeking and retrieval : a Sheffield perspective (2003) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 4692) [ClassicSimilarity], result of:
              0.0892039 = score(doc=4692,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 4692, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4692)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Journal of information science. 29(2003) no.4, S.239-248
  13. Harman, D.K.: Beyond English (2005) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 4850) [ClassicSimilarity], result of:
              0.0892039 = score(doc=4850,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 4850, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4850)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    29. 3.1996 18:16:49
  14. Voorhees, E.M.; Garofolo, J.S.: Retrieving noisy text (2005) 0.01
    0.014867317 = product of:
      0.029734634 = sum of:
        0.029734634 = product of:
          0.0892039 = sum of:
            0.0892039 = weight(_text_:29 in 5084) [ClassicSimilarity], result of:
              0.0892039 = score(doc=5084,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.5441145 = fieldWeight in 5084, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.109375 = fieldNorm(doc=5084)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    29. 3.1996 18:16:49
  15. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01
    0.014733574 = product of:
      0.029467149 = sum of:
        0.029467149 = product of:
          0.088401444 = sum of:
            0.088401444 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.088401444 = score(doc=262,freq=2.0), product of:
                0.1632042 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04660541 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    20.10.2000 12:22:23
  16. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.01
    0.014733574 = product of:
      0.029467149 = sum of:
        0.029467149 = product of:
          0.088401444 = sum of:
            0.088401444 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
              0.088401444 = score(doc=6418,freq=2.0), product of:
                0.1632042 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04660541 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Online. 22(1998) no.6, S.57-58
  17. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.01
    0.014733574 = product of:
      0.029467149 = sum of:
        0.029467149 = product of:
          0.088401444 = sum of:
            0.088401444 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
              0.088401444 = score(doc=6438,freq=2.0), product of:
                0.1632042 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04660541 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    11. 8.2001 16:22:19
  18. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.01
    0.014733574 = product of:
      0.029467149 = sum of:
        0.029467149 = product of:
          0.088401444 = sum of:
            0.088401444 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
              0.088401444 = score(doc=5089,freq=2.0), product of:
                0.1632042 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04660541 = 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)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 18:43:54
  19. Voorhees, E.M.: Question answering in TREC (2005) 0.01
    0.012743415 = product of:
      0.02548683 = sum of:
        0.02548683 = product of:
          0.07646049 = sum of:
            0.07646049 = weight(_text_:29 in 6487) [ClassicSimilarity], result of:
              0.07646049 = score(doc=6487,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.46638384 = fieldWeight in 6487, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.09375 = fieldNorm(doc=6487)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    29. 3.1996 18:16:49
  20. TREC-1: The first text retrieval conference : Rockville, MD, USA, 4-6 Nov. 1993 (1993) 0.01
    0.012743415 = product of:
      0.02548683 = sum of:
        0.02548683 = product of:
          0.07646049 = sum of:
            0.07646049 = weight(_text_:29 in 1315) [ClassicSimilarity], result of:
              0.07646049 = score(doc=1315,freq=2.0), product of:
                0.16394326 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04660541 = queryNorm
                0.46638384 = fieldWeight in 1315, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.09375 = fieldNorm(doc=1315)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Information processing and management. 29(1993) no.4, S.411-521

Languages

  • e 73
  • d 5
  • f 1
  • fi 1
  • nl 1
  • More… Less…

Types

  • a 74
  • s 6
  • m 3
  • el 1
  • r 1
  • More… Less…