Search (10 results, page 1 of 1)

  • × author_ss:"Buckley, C."
  1. Buckley, C.; Voorhees, E.M.: Retrieval system evaluation (2005) 0.03
    0.0261232 = product of:
      0.0522464 = sum of:
        0.0522464 = product of:
          0.1044928 = sum of:
            0.1044928 = weight(_text_:retrieval in 648) [ClassicSimilarity], result of:
              0.1044928 = score(doc=648,freq=4.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.6617001 = fieldWeight in 648, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.109375 = fieldNorm(doc=648)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    TREC: experiment and evaluation in information retrieval. Ed.: E.M. Voorhees, u. D.K. Harman
  2. Buckley, C.; Singhal, A.; Mitra, M.; Salton, G.: New retrieval approaches using SMART : TREC 4 (1996) 0.02
    0.022391316 = product of:
      0.04478263 = sum of:
        0.04478263 = product of:
          0.08956526 = sum of:
            0.08956526 = weight(_text_:retrieval in 7528) [ClassicSimilarity], result of:
              0.08956526 = score(doc=7528,freq=4.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.5671716 = fieldWeight in 7528, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.09375 = fieldNorm(doc=7528)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    The Fourth Text Retrieval Conference (TREC-4). Ed.: K. Harman
  3. Salton, G.; Buckley, C.: Term-weighting approaches in automatic text retrieval (1988) 0.02
    0.022391316 = product of:
      0.04478263 = sum of:
        0.04478263 = product of:
          0.08956526 = sum of:
            0.08956526 = weight(_text_:retrieval in 1938) [ClassicSimilarity], result of:
              0.08956526 = score(doc=1938,freq=4.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.5671716 = fieldWeight in 1938, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.09375 = fieldNorm(doc=1938)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.323-328.
  4. Buckley, C.; Voorhees, E.M.: Retrieval evaluation with incomplete information (2004) 0.02
    0.022391316 = product of:
      0.04478263 = sum of:
        0.04478263 = product of:
          0.08956526 = sum of:
            0.08956526 = weight(_text_:retrieval in 4127) [ClassicSimilarity], result of:
              0.08956526 = score(doc=4127,freq=4.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.5671716 = fieldWeight in 4127, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.09375 = fieldNorm(doc=4127)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    SIGIR'04: Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval. Ed.: K. Järvelin, u.a
  5. Salton, G.; Buckley, C.: Improving retrieval performance by relevance feedback (1990) 0.02
    0.018282432 = product of:
      0.036564864 = sum of:
        0.036564864 = product of:
          0.07312973 = sum of:
            0.07312973 = weight(_text_:retrieval in 5442) [ClassicSimilarity], result of:
              0.07312973 = score(doc=5442,freq=6.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.46309367 = fieldWeight in 5442, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5442)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Relevance feedback is an automatic process, introduced over 20 years ago, designed to produce improved query formulations following an initial retrieval operation. The principal relevance feedback methods described over the years are examined briefly, and evaluation data are included to demonstrate the effectiveness of the various methods. Prescriptions are given for conducting text retrieval operations iteratively using relevance feedback
  6. Singhal, A.; Buckley, C.; Mitra, M.: Using query zoning and correlation with SMART : TREC 5 (1997) 0.02
    0.01583305 = product of:
      0.0316661 = sum of:
        0.0316661 = product of:
          0.0633322 = sum of:
            0.0633322 = weight(_text_:retrieval in 3090) [ClassicSimilarity], result of:
              0.0633322 = score(doc=3090,freq=2.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.40105087 = fieldWeight in 3090, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.09375 = fieldNorm(doc=3090)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
  7. Buckley, C.; Allan, J.; Salton, G.: Automatic routing and retrieval using Smart : TREC-2 (1995) 0.02
    0.01583305 = product of:
      0.0316661 = sum of:
        0.0316661 = product of:
          0.0633322 = sum of:
            0.0633322 = weight(_text_:retrieval in 5699) [ClassicSimilarity], result of:
              0.0633322 = score(doc=5699,freq=8.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.40105087 = fieldWeight in 5699, product of:
                  2.828427 = tf(freq=8.0), with freq of:
                    8.0 = termFreq=8.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5699)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    The Smart information retrieval project emphazises completely automatic approaches to the understanding and retrieval of large quantities of text. The work in the TREC-2 environment continues, performing both routing and ad hoc experiments. The ad hoc work extends investigations into combining global similarities, giving an overall indication of how a document matches a query, with local similarities identifying a smaller part of the document that matches the query. The performance of ad hoc runs is good, but it is clear that full advantage of the available local information is not been taken advantage of. The routing experiments use conventional relevance feedback approaches to routing, but with a much greater degree of query expansion than was previously done. The length of a query vector is increased by a factor of 5 to 10 by adding terms found in previously seen relevant documents. This approach improves effectiveness by 30-40% over the original query
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  8. Buckley, C.: ¬The SMART Project at TREC (2005) 0.02
    0.01583305 = product of:
      0.0316661 = sum of:
        0.0316661 = product of:
          0.0633322 = sum of:
            0.0633322 = weight(_text_:retrieval in 5088) [ClassicSimilarity], result of:
              0.0633322 = score(doc=5088,freq=2.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.40105087 = fieldWeight in 5088, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.09375 = fieldNorm(doc=5088)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    TREC: experiment and evaluation in information retrieval. Ed.: E.M. Voorhees, u. D.K. Harman
  9. Salton, G.; Allan, J.; Buckley, C.; Singhal, A.: Automatic analysis, theme generation, and summarization of machine readable texts (1994) 0.01
    0.013194209 = product of:
      0.026388418 = sum of:
        0.026388418 = product of:
          0.052776836 = sum of:
            0.052776836 = weight(_text_:retrieval in 1949) [ClassicSimilarity], result of:
              0.052776836 = score(doc=1949,freq=2.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.33420905 = fieldWeight in 1949, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1949)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.478-483.
  10. Salton, G.; Buckley, C.; Allan, J.: Automatic structuring of text files (1992) 0.01
    0.010555367 = product of:
      0.021110734 = sum of:
        0.021110734 = product of:
          0.042221468 = sum of:
            0.042221468 = weight(_text_:retrieval in 6507) [ClassicSimilarity], result of:
              0.042221468 = score(doc=6507,freq=2.0), product of:
                0.15791564 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.052204985 = queryNorm
                0.26736724 = fieldWeight in 6507, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.0625 = fieldNorm(doc=6507)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    In many practical information retrieval situations, it is necessary to process heterogeneous text databases that vary greatly in scope and coverage and deal with many different subjects. In such an environment it is important to provide flexible access to individual text pieces and to structure the collection so that related text elements are identified and properly linked. Describes methods for the automatic structuring of heterogeneous text collections and the construction of browsing tools and access procedures that facilitate collection use. Illustrates these emthods with searches using a large automated encyclopedia