Search (52 results, page 2 of 3)

  • × theme_ss:"Retrievalstudien"
  1. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01
    0.0061666453 = product of:
      0.024666581 = sum of:
        0.024666581 = product of:
          0.049333163 = sum of:
            0.049333163 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.049333163 = score(doc=5002,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    Date
    19. 3.1996 11:22:12
  2. Sanderson, M.: ¬The Reuters test collection (1996) 0.01
    0.0061666453 = product of:
      0.024666581 = sum of:
        0.024666581 = product of:
          0.049333163 = sum of:
            0.049333163 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
              0.049333163 = score(doc=6971,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    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
  3. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.01
    0.0061666453 = product of:
      0.024666581 = sum of:
        0.024666581 = product of:
          0.049333163 = sum of:
            0.049333163 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
              0.049333163 = score(doc=744,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    Date
    1. 8.1996 22:01:00
  4. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.01
    0.0061666453 = product of:
      0.024666581 = sum of:
        0.024666581 = product of:
          0.049333163 = sum of:
            0.049333163 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
              0.049333163 = score(doc=3087,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    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
  5. Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.01
    0.0061666453 = product of:
      0.024666581 = sum of:
        0.024666581 = product of:
          0.049333163 = sum of:
            0.049333163 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
              0.049333163 = score(doc=3572,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    Source
    Online. 22(1998) no.3, S.24-26,28
  6. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.01
    0.0061666453 = product of:
      0.024666581 = sum of:
        0.024666581 = product of:
          0.049333163 = sum of:
            0.049333163 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
              0.049333163 = score(doc=261,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    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
  7. Ellis, D.: Progress and problems in information retrieval (1996) 0.01
    0.0061666453 = product of:
      0.024666581 = sum of:
        0.024666581 = product of:
          0.049333163 = sum of:
            0.049333163 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
              0.049333163 = score(doc=789,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    Date
    26. 7.2002 20:22:46
  8. ¬The Eleventh Text Retrieval Conference, TREC 2002 (2003) 0.01
    0.0061666453 = product of:
      0.024666581 = sum of:
        0.024666581 = product of:
          0.049333163 = sum of:
            0.049333163 = weight(_text_:22 in 4049) [ClassicSimilarity], result of:
              0.049333163 = score(doc=4049,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    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.
  9. Sullivan, M.V.; Borgman, C.L.: Bibliographic searching by end-users and intermediaries : front-end software vs native DIALOG commands (1988) 0.01
    0.0059357807 = product of:
      0.023743123 = sum of:
        0.023743123 = product of:
          0.047486246 = sum of:
            0.047486246 = weight(_text_:software in 3560) [ClassicSimilarity], result of:
              0.047486246 = score(doc=3560,freq=2.0), product of:
                0.18056466 = queryWeight, product of:
                  3.9671519 = idf(docFreq=2274, maxDocs=44218)
                  0.045514934 = queryNorm
                0.2629875 = fieldWeight in 3560, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9671519 = idf(docFreq=2274, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3560)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
  10. Yerbury, H.; Parker, J.: Novice searchers' use of familiar structures in searching bibliographic information retrieval systems (1998) 0.01
    0.0059357807 = product of:
      0.023743123 = sum of:
        0.023743123 = product of:
          0.047486246 = sum of:
            0.047486246 = weight(_text_:software in 2874) [ClassicSimilarity], result of:
              0.047486246 = score(doc=2874,freq=2.0), product of:
                0.18056466 = queryWeight, product of:
                  3.9671519 = idf(docFreq=2274, maxDocs=44218)
                  0.045514934 = queryNorm
                0.2629875 = fieldWeight in 2874, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9671519 = idf(docFreq=2274, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2874)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Abstract
    Reports results of a study of the use of metaphors as problem solving mechanisms by novice searchers of bibliographic databases. Metaphors provide a framework or 'familiar structure' of credible associations within which relationships in other domains may be considered. 28 students taking an undergraduate course in information retrieval at Sydney University of Technology, were recorded as they 'talked through' a search on a bibliographic retrieval system. The transcripts were analyzed using conventional methods and the NUDIST software package for qualitative research. A range of metaphors was apparent from the language use by students in the search process. Those which predominated were: a journey; human interaction; a building or matching process; a problem solving process, and a search for a quantity. Many of the studentes experiencing the interaction as a problem solving process or a search for quantity perceived the outcomes as successful. Concludes that when memory for operating methods and procedures is incomplete an unconscious approach through the use of a conceptual system which is consonant with the task at hand may also lead to success in bibliographic searching
  11. Serrano Cobos, J.; Quintero Orta, A.: Design, development and management of an information recovery system for an Internet Website : from documentary theory to practice (2003) 0.01
    0.0059357807 = product of:
      0.023743123 = sum of:
        0.023743123 = product of:
          0.047486246 = sum of:
            0.047486246 = weight(_text_:software in 2726) [ClassicSimilarity], result of:
              0.047486246 = score(doc=2726,freq=2.0), product of:
                0.18056466 = queryWeight, product of:
                  3.9671519 = idf(docFreq=2274, maxDocs=44218)
                  0.045514934 = queryNorm
                0.2629875 = fieldWeight in 2726, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9671519 = idf(docFreq=2274, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2726)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Abstract
    A real case study is shown, explaining in a timeline the whole process of design, development and evaluation of a search engine used as a navigational help tool for end users and clients an a content website, e-commerce driven. The nature of the website is a community website, which will determine the core design of the information service. This study will involve several steps, such as information recovery system analysis, comparative analysis of other commercial search engines, service design, functionalities and scope; software selection, design of the project, project management, future service administration and conclusions.
  12. Blagden, J.F.: How much noise in a role-free and link-free co-ordinate indexing system? (1966) 0.01
    0.005395815 = product of:
      0.02158326 = sum of:
        0.02158326 = product of:
          0.04316652 = sum of:
            0.04316652 = weight(_text_:22 in 2718) [ClassicSimilarity], result of:
              0.04316652 = score(doc=2718,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = 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)
      0.25 = coord(1/4)
    
    Source
    Journal of documentation. 22(1966), S.203-209
  13. Smithson, S.: Information retrieval evaluation in practice : a case study approach (1994) 0.01
    0.005395815 = product of:
      0.02158326 = sum of:
        0.02158326 = product of:
          0.04316652 = sum of:
            0.04316652 = weight(_text_:22 in 7302) [ClassicSimilarity], result of:
              0.04316652 = score(doc=7302,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = queryNorm
                0.2708308 = fieldWeight in 7302, 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=7302)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Abstract
    The evaluation of information retrieval systems is an important yet difficult operation. This paper describes an exploratory evaluation study that takes an interpretive approach to evaluation. The longitudinal study examines evaluation through the information-seeking behaviour of 22 case studies of 'real' users. The eclectic approach to data collection produced behavioral data that is compared with relevance judgements and satisfaction ratings. The study demonstrates considerable variations among the cases, among different evaluation measures within the same case, and among the same measures at different stages within a single case. It is argued that those involved in evaluation should be aware of the difficulties, and base any evaluation on a good understanding of the cases in question
  14. Blair, D.C.: STAIRS Redux : thoughts on the STAIRS evaluation, ten years after (1996) 0.01
    0.005395815 = product of:
      0.02158326 = sum of:
        0.02158326 = product of:
          0.04316652 = sum of:
            0.04316652 = weight(_text_:22 in 3002) [ClassicSimilarity], result of:
              0.04316652 = score(doc=3002,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = queryNorm
                0.2708308 = fieldWeight in 3002, 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=3002)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Journal of the American Society for Information Science. 47(1996) no.1, S.4-22
  15. Losee, R.M.: Determining information retrieval and filtering performance without experimentation (1995) 0.01
    0.005395815 = product of:
      0.02158326 = sum of:
        0.02158326 = product of:
          0.04316652 = sum of:
            0.04316652 = weight(_text_:22 in 3368) [ClassicSimilarity], result of:
              0.04316652 = score(doc=3368,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = queryNorm
                0.2708308 = fieldWeight in 3368, 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=3368)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    22. 2.1996 13:14:10
  16. Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.01
    0.005395815 = product of:
      0.02158326 = sum of:
        0.02158326 = product of:
          0.04316652 = sum of:
            0.04316652 = weight(_text_:22 in 5001) [ClassicSimilarity], result of:
              0.04316652 = score(doc=5001,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = queryNorm
                0.2708308 = fieldWeight in 5001, 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=5001)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    14. 3.1996 13:22:21
  17. Brown, M.E.: By any other name : accounting for failure in the naming of subject categories (1995) 0.01
    0.005395815 = product of:
      0.02158326 = sum of:
        0.02158326 = product of:
          0.04316652 = sum of:
            0.04316652 = weight(_text_:22 in 5598) [ClassicSimilarity], result of:
              0.04316652 = score(doc=5598,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = queryNorm
                0.2708308 = fieldWeight in 5598, 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=5598)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    2.11.1996 13:08:22
  18. Iivonen, M.: Consistency in the selection of search concepts and search terms (1995) 0.00
    0.0046249838 = product of:
      0.018499935 = sum of:
        0.018499935 = product of:
          0.03699987 = sum of:
            0.03699987 = weight(_text_:22 in 1757) [ClassicSimilarity], result of:
              0.03699987 = score(doc=1757,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = queryNorm
                0.23214069 = fieldWeight in 1757, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1757)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Abstract
    Considers intersearcher and intrasearcher consistency in the selection of search terms. Based on an empirical study where 22 searchers from 4 different types of search environments analyzed altogether 12 search requests of 4 different types in 2 separate test situations between which 2 months elapsed. Statistically very significant differences in consistency were found according to the types of search environments and search requests. Consistency was also considered according to the extent of the scope of search concept. At level I search terms were compared character by character. At level II different search terms were accepted as the same search concept with a rather simple evaluation of linguistic expressions. At level III, in addition to level II, the hierarchical approach of the search request was also controlled. At level IV different search terms were accepted as the same search concept with a broad interpretation of the search concept. Both intersearcher and intrasearcher consistency grew most immediately after a rather simple evaluation of linguistic impressions
  19. Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.00
    0.0046249838 = product of:
      0.018499935 = sum of:
        0.018499935 = product of:
          0.03699987 = sum of:
            0.03699987 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
              0.03699987 = score(doc=3564,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = queryNorm
                0.23214069 = fieldWeight in 3564, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3564)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    9. 1.1996 10:22:31
  20. Wood, F.; Ford, N.; Miller, D.; Sobczyk, G.; Duffin, R.: Information skills, searching behaviour and cognitive styles for student-centred learning : a computer-assisted learning approach (1996) 0.00
    0.0046249838 = product of:
      0.018499935 = sum of:
        0.018499935 = product of:
          0.03699987 = sum of:
            0.03699987 = weight(_text_:22 in 4341) [ClassicSimilarity], result of:
              0.03699987 = score(doc=4341,freq=2.0), product of:
                0.15938555 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045514934 = queryNorm
                0.23214069 = fieldWeight in 4341, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4341)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Journal of information science. 22(1996) no.2, S.79-92

Languages

  • e 42
  • d 8
  • f 1
  • More… Less…

Types

  • a 45
  • s 4
  • el 2
  • m 2
  • p 1
  • x 1
  • More… Less…