Search (44 results, page 1 of 3)

  • × theme_ss:"Retrievalstudien"
  1. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01 
    0.011605277 = product of:
  0.03481583 = sum of:
    0.03481583 = product of:
      0.06963166 = sum of:
        0.06963166 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
          0.06963166 = score(doc=262,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Date
    20.10.2000 12:22:23
  2. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.01 
    0.011605277 = product of:
  0.03481583 = sum of:
    0.03481583 = product of:
      0.06963166 = sum of:
        0.06963166 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
          0.06963166 = score(doc=6418,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Source
    Online. 22(1998) no.6, S.57-58
  3. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.01 
    0.011605277 = product of:
  0.03481583 = sum of:
    0.03481583 = product of:
      0.06963166 = sum of:
        0.06963166 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
          0.06963166 = score(doc=6438,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Date
    11. 8.2001 16:22:19
  4. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.01 
    0.011605277 = product of:
  0.03481583 = sum of:
    0.03481583 = product of:
      0.06963166 = sum of:
        0.06963166 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
          0.06963166 = score(doc=5089,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Date
    22. 7.2006 18:43:54
  5. 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 
    0.010930616 = product of:
  0.03279185 = sum of:
    0.03279185 = product of:
      0.0655837 = sum of:
        0.0655837 = weight(_text_:digital in 2021) [ClassicSimilarity], result of:
          0.0655837 = score(doc=2021,freq=6.0), product of:
            0.14480425 = queryWeight, product of:
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.03670994 = queryNorm
            0.4529128 = fieldWeight in 2021, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.046875 = fieldNorm(doc=2021)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    The strongest tradition of IR systems evaluation has focused on system effectiveness; more recently, there has been a growing interest in evaluation of Interactive IR systems, balancing system and user-oriented evaluation criteria. In this paper we shift the focus to considering how IR systems, and particularly digital libraries, can be evaluated to assess (and improve) their fit with users' broader work activities. Taking this focus, we answer a different set of evaluation questions that reveal more about the design of interfaces, user-system interactions and how systems may be deployed in the information working context. The planning and conduct of such evaluation studies share some features with the established methods for conducting IR evaluation studies, but come with a shift in emphasis; for example, a greater range of ethical considerations may be pertinent. We present the PRET A Rapporter framework for structuring user-centred evaluation studies and illustrate its application to three evaluation studies of digital library systems.
  6. Salampasis, M.; Tait, J.; Bloor, C.: Evaluation of information-seeking performance in hypermedia digital libraries (1998) 0.01 
    0.0104122795 = product of:
  0.031236839 = sum of:
    0.031236839 = product of:
      0.062473677 = sum of:
        0.062473677 = weight(_text_:digital in 3759) [ClassicSimilarity], result of:
          0.062473677 = score(doc=3759,freq=4.0), product of:
            0.14480425 = queryWeight, product of:
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.03670994 = queryNorm
            0.43143538 = fieldWeight in 3759, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3759)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    Discusses current information retrieval methods based on recall (R) and precision (P) for evaluating information retrieval and examines their suitability for evaluating the performance of hypermedia digital libraries. Proposes a new quantitative evaluation methodology, based on the structural analysis of hypermedia networks and the navigational and search state patterns of information seekers. Although the proposed methodology retains some of the characteristics of R and P evaluation, it could be more suitable than them for measuring the performance of information-seeking environments where information seekers can utilize arbitrary mixtures of browsing and query-based searching strategies
  7. Park, S.: Usability, user preferences, effectiveness, and user behaviors when searching individual and integrated full-text databases : implications for digital libraries (2000) 0.01 
    0.009108848 = product of:
  0.027326543 = sum of:
    0.027326543 = product of:
      0.054653086 = sum of:
        0.054653086 = weight(_text_:digital in 4591) [ClassicSimilarity], result of:
          0.054653086 = score(doc=4591,freq=6.0), product of:
            0.14480425 = queryWeight, product of:
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.03670994 = queryNorm
            0.37742734 = fieldWeight in 4591, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4591)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    This article addresses a crucial issue in the digital library environment: how to support effective interaction of users with heterogeneous and distributed information resources. In particular, this study compared usability, user preference, effectiveness, and searching behaviors in systems that implement interaction with multiple databases as if they were one (integrated interaction) in a experiment in the TREC environment. 28 volunteers were recruited from the graduate students of the School of Communication, Information & Library Studies at Rutgers University. Significantly more subjects preferred the common interface to the integrated interface, mainly because they could have more control over database selection. Subjects were also more satisfied with the results from the common interface, and performed better with the common interface than with the integrated interface. Overall, it appears that for this population, interacting with databases through a common interface is preferable on all grounds to interacting with databases through an integrated interface. These results suggest that: (1) the general assumption of the information retrieval (IR) literature that an integrated interaction is best needs to be revisited; (2) it is important to allow for more user control in the distributed environment; (3) for digital library purposes, it is important to characterize different databases to support user choice for integration; and (4) certain users prefer control over database selection while still opting for results to be merged
  8. MacCall, S.L.; Cleveland, A.D.; Gibson, I.E.: Outline and preliminary evaluation of the classical digital library model (1999) 0.01 
    0.009108848 = product of:
  0.027326543 = sum of:
    0.027326543 = product of:
      0.054653086 = sum of:
        0.054653086 = weight(_text_:digital in 6541) [ClassicSimilarity], result of:
          0.054653086 = score(doc=6541,freq=6.0), product of:
            0.14480425 = queryWeight, product of:
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.03670994 = queryNorm
            0.37742734 = fieldWeight in 6541, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.0390625 = fieldNorm(doc=6541)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    The growing number of networked information resources and services offers unprecedented opportunities for delivering high quality information to the computer desktop of a wide range of individuals. However, currently there is a reliance on a database retrieval model, in which endusers use keywords to search large collections of automatically indexed resources in order to find needed information. As an alternative to the database retrieval model, this paper outlines the classical digital library model, which is derived from traditional practices of library and information science professionals. These practices include the selection and organization of information resources for local populations of users and the integration of advanced information retrieval tools, such as databases and the Internet into these collections. To evaluate this model, library and information professionals and endusers involved with primary care medicine were asked to respond to a series of questions comparing their experiences with a digital library developed for the primary care population to their experiences with general Internet use. Preliminary results are reported
  9. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.01 
    0.008289483 = product of:
  0.02486845 = sum of:
    0.02486845 = product of:
      0.0497369 = sum of:
        0.0497369 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
          0.0497369 = score(doc=3103,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    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) 0.01 
    0.008289483 = product of:
  0.02486845 = sum of:
    0.02486845 = product of:
      0.0497369 = sum of:
        0.0497369 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
          0.0497369 = score(doc=3107,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    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) 0.01 
    0.008289483 = product of:
  0.02486845 = sum of:
    0.02486845 = product of:
      0.0497369 = sum of:
        0.0497369 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
          0.0497369 = score(doc=2417,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Pages
    S.22-25
  12. Boros, E.; Kantor, P.B.; Neu, D.J.: Pheromonic representation of user quests by digital structures (1999) 0.01 
    0.0074373423 = product of:
  0.022312026 = sum of:
    0.022312026 = product of:
      0.044624053 = sum of:
        0.044624053 = weight(_text_:digital in 6684) [ClassicSimilarity], result of:
          0.044624053 = score(doc=6684,freq=4.0), product of:
            0.14480425 = queryWeight, product of:
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.03670994 = queryNorm
            0.3081681 = fieldWeight in 6684, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.944552 = idf(docFreq=2326, maxDocs=44218)
              0.0390625 = fieldNorm(doc=6684)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    In a novel approach to information finding in networked environments, each user's specific purpose or "quest" can be represented in numerous ways. The most familiar is a list of keywords, or a natural language sentence or paragraph. More effective is an extended text that has been judged as to relevance. This forms the basis of relevance feedback, as it is used in information retrieval. In the "Ant World" project (Ant World, 1999; Kantor et al., 1999b; Kantor et al., 1999a), the items to be retrieved are not documents, but rather quests, represented by entire collections of judged documents. In order to save space and time we have developed methods for representing these complex entities in a short string of about 1,000 bytes, which we call a "Digital Information Pheromone" (DIP). The principles for determining the DIP for a given quest, and for matching DIPs to each other are presented. The effectiveness of this scheme is explored with some applications to the large judged collections of TREC documents
  13. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01 
    0.0066315862 = product of:
  0.019894758 = sum of:
    0.019894758 = product of:
      0.039789516 = sum of:
        0.039789516 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.039789516 = score(doc=5002,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Date
    19. 3.1996 11:22:12
  14. Sanderson, M.: ¬The Reuters test collection (1996) 0.01 
    0.0066315862 = product of:
  0.019894758 = sum of:
    0.019894758 = product of:
      0.039789516 = sum of:
        0.039789516 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
          0.039789516 = score(doc=6971,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    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
  15. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.01 
    0.0066315862 = product of:
  0.019894758 = sum of:
    0.019894758 = product of:
      0.039789516 = sum of:
        0.039789516 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
          0.039789516 = score(doc=744,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Date
    1. 8.1996 22:01:00
  16. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.01 
    0.0066315862 = product of:
  0.019894758 = sum of:
    0.019894758 = product of:
      0.039789516 = sum of:
        0.039789516 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
          0.039789516 = score(doc=3087,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    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
  17. Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.01 
    0.0066315862 = product of:
  0.019894758 = sum of:
    0.019894758 = product of:
      0.039789516 = sum of:
        0.039789516 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
          0.039789516 = score(doc=3572,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Source
    Online. 22(1998) no.3, S.24-26,28
  18. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.01 
    0.0066315862 = product of:
  0.019894758 = sum of:
    0.019894758 = product of:
      0.039789516 = sum of:
        0.039789516 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
          0.039789516 = score(doc=261,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    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
  19. Ellis, D.: Progress and problems in information retrieval (1996) 0.01 
    0.0066315862 = product of:
  0.019894758 = sum of:
    0.019894758 = product of:
      0.039789516 = sum of:
        0.039789516 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
          0.039789516 = score(doc=789,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    Date
    26. 7.2002 20:22:46
  20. ¬The Eleventh Text Retrieval Conference, TREC 2002 (2003) 0.01 
    0.0066315862 = product of:
  0.019894758 = sum of:
    0.019894758 = product of:
      0.039789516 = sum of:
        0.039789516 = weight(_text_:22 in 4049) [ClassicSimilarity], result of:
          0.039789516 = score(doc=4049,freq=2.0), product of:
            0.12855195 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03670994 = 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)
  0.33333334 = coord(1/3)
    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.

Authors

Years

Languages

  • e 39
  • d 3
  • f 1
  • More… Less…

Types

  • a 39
  • s 4
  • m 3
  • el 1
  • More… Less…

Themes

Subjects

Classifications