Search (56 results, page 3 of 3)

  • × language_ss:"e"
  • × theme_ss:"Retrievalstudien"
  1. Palmquist, R.A.; Kim, K.-S.: Cognitive style and on-line database search experience as predictors of Web search performance (2000) 0.01 
    0.0075771073 = product of:
  0.037885536 = sum of:
    0.037885536 = weight(_text_:7 in 4605) [ClassicSimilarity], result of:
      0.037885536 = score(doc=4605,freq=2.0), product of:
        0.17251469 = queryWeight, product of:
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.052075688 = queryNorm
        0.21960759 = fieldWeight in 4605, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.046875 = fieldNorm(doc=4605)
  0.2 = coord(1/5)
    Date
    7. 5.2000 20:10:10
  2. Colace, F.; Santo, M. de; Greco, L.; Napoletano, P.: Improving relevance feedback-based query expansion by the use of a weighted word pairs approach (2015) 0.01 
    0.0075771073 = product of:
  0.037885536 = sum of:
    0.037885536 = weight(_text_:7 in 2263) [ClassicSimilarity], result of:
      0.037885536 = score(doc=2263,freq=2.0), product of:
        0.17251469 = queryWeight, product of:
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.052075688 = queryNorm
        0.21960759 = fieldWeight in 2263, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.046875 = fieldNorm(doc=2263)
  0.2 = coord(1/5)
    Abstract
    In this article, the use of a new term extraction method for query expansion (QE) in text retrieval is investigated. The new method expands the initial query with a structured representation made of weighted word pairs (WWP) extracted from a set of training documents (relevance feedback). Standard text retrieval systems can handle a WWP structure through custom Boolean weighted models. We experimented with both the explicit and pseudorelevance feedback schemas and compared the proposed term extraction method with others in the literature, such as KLD and RM3. Evaluations have been conducted on a number of test collections (Text REtrivel Conference [TREC]-6, -7, -8, -9, and -10). Results demonstrated that the QE method based on this new structure outperforms the baseline.
  3. Belkin, N.J.: ¬An overview of results from Rutgers' investigations of interactive information retrieval (1998) 0.01 
    0.007055537 = product of:
  0.035277683 = sum of:
    0.035277683 = weight(_text_:22 in 2339) [ClassicSimilarity], result of:
      0.035277683 = score(doc=2339,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = queryNorm
        0.19345059 = fieldWeight in 2339, 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=2339)
  0.2 = coord(1/5)
    Date
    22. 9.1997 19:16:05
  4. King, D.W.: Blazing new trails : in celebration of an audacious career (2000) 0.01 
    0.007055537 = product of:
  0.035277683 = sum of:
    0.035277683 = weight(_text_:22 in 1184) [ClassicSimilarity], result of:
      0.035277683 = score(doc=1184,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = 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
  5. Petrelli, D.: On the role of user-centred evaluation in the advancement of interactive information retrieval (2008) 0.01 
    0.007055537 = product of:
  0.035277683 = sum of:
    0.035277683 = weight(_text_:22 in 2026) [ClassicSimilarity], result of:
      0.035277683 = score(doc=2026,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = 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
  6. Pal, S.; Mitra, M.; Kamps, J.: Evaluation effort, reliability and reusability in XML retrieval (2011) 0.01 
    0.007055537 = product of:
  0.035277683 = sum of:
    0.035277683 = weight(_text_:22 in 4197) [ClassicSimilarity], result of:
      0.035277683 = score(doc=4197,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = queryNorm
        0.19345059 = fieldWeight in 4197, 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=4197)
  0.2 = coord(1/5)
    Date
    22. 1.2011 14:20:56
  7. Chu, H.: Factors affecting relevance judgment : a report from TREC Legal track (2011) 0.01 
    0.007055537 = product of:
  0.035277683 = sum of:
    0.035277683 = weight(_text_:22 in 4540) [ClassicSimilarity], result of:
      0.035277683 = score(doc=4540,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = 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)
  0.2 = coord(1/5)
    Date
    12. 7.2011 18:29:22
  8. Wildemuth, B.; Freund, L.; Toms, E.G.: Untangling search task complexity and difficulty in the context of interactive information retrieval studies (2014) 0.01 
    0.007055537 = product of:
  0.035277683 = sum of:
    0.035277683 = weight(_text_:22 in 1786) [ClassicSimilarity], result of:
      0.035277683 = score(doc=1786,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = queryNorm
        0.19345059 = fieldWeight in 1786, 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=1786)
  0.2 = coord(1/5)
    Date
    6. 4.2015 19:31:22
  9. Ravana, S.D.; Taheri, M.S.; Rajagopal, P.: Document-based approach to improve the accuracy of pairwise comparison in evaluating information retrieval systems (2015) 0.01 
    0.007055537 = product of:
  0.035277683 = sum of:
    0.035277683 = weight(_text_:22 in 2587) [ClassicSimilarity], result of:
      0.035277683 = score(doc=2587,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = queryNorm
        0.19345059 = fieldWeight in 2587, 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=2587)
  0.2 = coord(1/5)
    Date
    20. 1.2015 18:30:22
  10. Rajagopal, P.; Ravana, S.D.; Koh, Y.S.; Balakrishnan, V.: Evaluating the effectiveness of information retrieval systems using effort-based relevance judgment (2019) 0.01 
    0.007055537 = product of:
  0.035277683 = sum of:
    0.035277683 = weight(_text_:22 in 5287) [ClassicSimilarity], result of:
      0.035277683 = score(doc=5287,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = queryNorm
        0.19345059 = fieldWeight in 5287, 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=5287)
  0.2 = coord(1/5)
    Date
    20. 1.2015 18:30:22
  11. Keenan, S.; Smeaton, A.F.; Keogh, G.: ¬The effect of pool depth on system evaluation in TREC (2001) 0.01 
    0.0063142553 = product of:
  0.031571276 = sum of:
    0.031571276 = weight(_text_:7 in 5908) [ClassicSimilarity], result of:
      0.031571276 = score(doc=5908,freq=2.0), product of:
        0.17251469 = queryWeight, product of:
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.052075688 = queryNorm
        0.18300632 = fieldWeight in 5908, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5908)
  0.2 = coord(1/5)
    Source
    Journal of the American Society for Information Science and technology. 52(2001) no.7, S.570-574
  12. Voorbij, H.: Title keywords and subject descriptors : a comparison of subject search entries of books in the humanities and social sciences (1998) 0.01 
    0.0063142553 = product of:
  0.031571276 = sum of:
    0.031571276 = weight(_text_:7 in 4721) [ClassicSimilarity], result of:
      0.031571276 = score(doc=4721,freq=2.0), product of:
        0.17251469 = queryWeight, product of:
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.052075688 = queryNorm
        0.18300632 = fieldWeight in 4721, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4721)
  0.2 = coord(1/5)
    Abstract
    In order to compare the value of subject descriptors and title keywords as entries to subject searches, two studies were carried out. Both studies concentrated on monographs in the humanities and social sciences, held by the online public access catalogue of the National Library of the Netherlands. In the first study, a comparison was made by subject librarians between the subject descriptors and the title keywords of 475 records. They could express their opinion on a scale from 1 (descriptor is exactly or almost the same as word in title) to 7 (descriptor does not appear in title at all). It was concluded that 37 per cent of the records are considerably enhanced by a subject descriptor, and 49 per cent slightly or considerably enhanced. In the second study, subject librarians performed subject searches using title keywords and subject descriptors on the same topic. The relative recall amounted to 48 per cent and 86 per cent respectively. Failure analysis revealed the reasons why so many records that were found by subject descriptors were not found by title keywords. First, although completely meaningless titles hardly ever appear, the title of a publication does not always offer sufficient clues for title keyword searching. In those cases, descriptors may enhance the record of a publication. A second and even more important task of subject descriptors is controlling the vocabulary. Many relevant titles cannot be retrieved by title keyword searching because of the wide diversity of ways of expressing a topic. Descriptors take away the burden of vocabulary control from the user.
  13. Toepfer, M.; Seifert, C.: Content-based quality estimation for automatic subject indexing of short texts under precision and recall constraints 0.01 
    0.0063142553 = product of:
  0.031571276 = sum of:
    0.031571276 = weight(_text_:7 in 4309) [ClassicSimilarity], result of:
      0.031571276 = score(doc=4309,freq=2.0), product of:
        0.17251469 = queryWeight, product of:
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.052075688 = queryNorm
        0.18300632 = fieldWeight in 4309, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4309)
  0.2 = coord(1/5)
    Issue
    [Submitted on 7 Jun 2018].
  14. Larsen, B.; Ingwersen, P.; Lund, B.: Data fusion according to the principle of polyrepresentation (2009) 0.01 
    0.0056444295 = product of:
  0.028222147 = sum of:
    0.028222147 = weight(_text_:22 in 2752) [ClassicSimilarity], result of:
      0.028222147 = score(doc=2752,freq=2.0), product of:
        0.18236019 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052075688 = queryNorm
        0.15476047 = fieldWeight in 2752, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.03125 = fieldNorm(doc=2752)
  0.2 = coord(1/5)
    Date
    22. 3.2009 18:48:28
  15. Borgman, C.L.: Why are online catalogs still hard to use? (1996) 0.01 
    0.0050514047 = product of:
  0.025257023 = sum of:
    0.025257023 = weight(_text_:7 in 4380) [ClassicSimilarity], result of:
      0.025257023 = score(doc=4380,freq=2.0), product of:
        0.17251469 = queryWeight, product of:
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.052075688 = queryNorm
        0.14640506 = fieldWeight in 4380, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.03125 = fieldNorm(doc=4380)
  0.2 = coord(1/5)
    Source
    Journal of the American Society for Information Science. 47(1996) no.7, S.493-503
  16. TREC: experiment and evaluation in information retrieval (2005) 0.00 
    0.0031571276 = product of:
  0.015785638 = sum of:
    0.015785638 = weight(_text_:7 in 636) [ClassicSimilarity], result of:
      0.015785638 = score(doc=636,freq=2.0), product of:
        0.17251469 = queryWeight, product of:
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.052075688 = queryNorm
        0.09150316 = fieldWeight in 636, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.3127685 = idf(docFreq=4376, maxDocs=44218)
          0.01953125 = fieldNorm(doc=636)
  0.2 = coord(1/5)
    Content
    Enthält die Beiträge: 1. The Text REtrieval Conference - Ellen M. Voorhees and Donna K. Harman 2. The TREC Test Collections - Donna K. Harman 3. Retrieval System Evaluation - Chris Buckley and Ellen M. Voorhees 4. The TREC Ad Hoc Experiments - Donna K. Harman 5. Routing and Filtering - Stephen Robertson and Jamie Callan 6. The TREC Interactive Tracks: Putting the User into Search - Susan T. Dumais and Nicholas J. Belkin 7. Beyond English - Donna K. Harman 8. Retrieving Noisy Text - Ellen M. Voorhees and John S. Garofolo 9.The Very Large Collection and Web Tracks - David Hawking and Nick Craswell 10. Question Answering in TREC - Ellen M. Voorhees 11. The University of Massachusetts and a Dozen TRECs - James Allan, W. Bruce Croft and Jamie Callan 12. How Okapi Came to TREC - Stephen Robertson 13. The SMART Project at TREC - Chris Buckley 14. Ten Years of Ad Hoc Retrieval at TREC Using PIRCS - Kui-Lam Kwok 15. MultiText Experiments for TREC - Gordon V. Cormack, Charles L. A. Clarke, Christopher R. Palmer and Thomas R. Lynam 16. A Language-Modeling Approach to TREC - Djoerd Hiemstra and Wessel Kraaij 17. BM Research Activities at TREC - Eric W. Brown, David Carmel, Martin Franz, Abraham Ittycheriah, Tapas Kanungo, Yoelle Maarek, J. Scott McCarley, Robert L. Mack, John M. Prager, John R. Smith, Aya Soffer, Jason Y. Zien and Alan D. Marwick Epilogue: Metareflections on TREC - Karen Sparck Jones

Authors

Years

Types

  • a 51
  • s 4
  • m 2
  • el 1
  • More… Less…

Themes

Subjects

Classifications