Search (43 results, page 1 of 3)

  • × theme_ss:"Retrievalstudien"
  1. Mandl, T.: Evaluierung im Information Retrieval : die Hildesheimer Antwort auf aktuelle Herausforderungen der globalisierten Informationsgesellschaft (2010) 0.02
    0.021768343 = product of:
      0.065305024 = sum of:
        0.065305024 = product of:
          0.13061005 = sum of:
            0.13061005 = weight(_text_:2010 in 4011) [ClassicSimilarity], result of:
              0.13061005 = score(doc=4011,freq=5.0), product of:
                0.19538787 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.040849205 = queryNorm
                0.6684655 = fieldWeight in 4011, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.0625 = fieldNorm(doc=4011)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Information - Wissenschaft und Praxis. 61(2010) H.6/7, S.341-348
    Year
    2010
  2. Al-Maskari, A.; Sanderson, M.: ¬A review of factors influencing user satisfaction in information retrieval (2010) 0.02
    0.0190473 = product of:
      0.057141896 = sum of:
        0.057141896 = product of:
          0.11428379 = sum of:
            0.11428379 = weight(_text_:2010 in 3447) [ClassicSimilarity], result of:
              0.11428379 = score(doc=3447,freq=5.0), product of:
                0.19538787 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.040849205 = queryNorm
                0.5849073 = fieldWeight in 3447, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3447)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of the American Society for Information Science and Technology. 61(2010) no.5, S.859-868
    Year
    2010
  3. Vechtomova, O.: Facet-based opinion retrieval from blogs (2010) 0.02
    0.0190473 = product of:
      0.057141896 = sum of:
        0.057141896 = product of:
          0.11428379 = sum of:
            0.11428379 = weight(_text_:2010 in 4225) [ClassicSimilarity], result of:
              0.11428379 = score(doc=4225,freq=5.0), product of:
                0.19538787 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.040849205 = queryNorm
                0.5849073 = fieldWeight in 4225, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4225)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Information processing and management. 46(2010) no.1, S.71-88
    Year
    2010
  4. Becks, D.; Mandl, T.; Womser-Hacker, C.: Spezielle Anforderungen bei der Evaluierung von Patent-Retrieval-Systemen (2010) 0.01
    0.014753974 = product of:
      0.04426192 = sum of:
        0.04426192 = product of:
          0.08852384 = sum of:
            0.08852384 = weight(_text_:2010 in 4667) [ClassicSimilarity], result of:
              0.08852384 = score(doc=4667,freq=3.0), product of:
                0.19538787 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.040849205 = queryNorm
                0.45306724 = fieldWeight in 4667, product of:
                  1.7320508 = tf(freq=3.0), with freq of:
                    3.0 = termFreq=3.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4667)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Year
    2010
  5. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01
    0.012913842 = product of:
      0.038741525 = sum of:
        0.038741525 = product of:
          0.07748305 = sum of:
            0.07748305 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.07748305 = score(doc=262,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  6. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.01
    0.012913842 = product of:
      0.038741525 = sum of:
        0.038741525 = product of:
          0.07748305 = sum of:
            0.07748305 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
              0.07748305 = score(doc=6418,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  7. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.01
    0.012913842 = product of:
      0.038741525 = sum of:
        0.038741525 = product of:
          0.07748305 = sum of:
            0.07748305 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
              0.07748305 = score(doc=6438,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  8. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.01
    0.012913842 = product of:
      0.038741525 = sum of:
        0.038741525 = product of:
          0.07748305 = sum of:
            0.07748305 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
              0.07748305 = score(doc=5089,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  9. Naderi, H.; Rumpler, B.: PERCIRS: a system to combine personalized and collaborative information retrieval (2010) 0.01
    0.010884171 = product of:
      0.032652512 = sum of:
        0.032652512 = product of:
          0.065305024 = sum of:
            0.065305024 = weight(_text_:2010 in 3960) [ClassicSimilarity], result of:
              0.065305024 = score(doc=3960,freq=5.0), product of:
                0.19538787 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.040849205 = queryNorm
                0.33423275 = fieldWeight in 3960, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.03125 = fieldNorm(doc=3960)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of documentation. 66(2010) no.4, S.532-562
    Year
    2010
  10. Munkelt, J.; Schaer, P.; Lepsky, K.: Towards an IR test collection for the German National Library (2018) 0.01
    0.010325631 = product of:
      0.030976893 = sum of:
        0.030976893 = product of:
          0.061953787 = sum of:
            0.061953787 = weight(_text_:2010 in 4311) [ClassicSimilarity], result of:
              0.061953787 = score(doc=4311,freq=2.0), product of:
                0.19538787 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.040849205 = queryNorm
                0.31708103 = fieldWeight in 4311, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4311)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Abstract
    Automatic content indexing is one of the innovations that are increasingly changing the way libraries work. In theory, it promises a cataloguing service that would hardly be possible with humans in terms of speed, quantity and maybe quality. The German National Library (DNB) has also recognised this potential and is increasingly relying on the automatic indexing of their catalogue content. The DNB took a major step in this direction in 2017, which was announced in two papers. The announcement was rather restrained, but the content of the papers is all the more explosive for the library community: Since September 2017, the DNB has discontinued the intellectual indexing of series Band H and has switched to an automatic process for these series. The subject indexing of online publications (series O) has been purely automatical since 2010; from September 2017, monographs and periodicals published outside the publishing industry and university publications will no longer be indexed by people. This raises the question: What is the quality of the automatic indexing compared to the manual work or in other words to which degree can the automatic indexing replace people without a signi cant drop in regards to quality?
  11. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.01
    0.009224173 = product of:
      0.027672518 = sum of:
        0.027672518 = product of:
          0.055345036 = sum of:
            0.055345036 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
              0.055345036 = score(doc=3103,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  12. 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
    0.009224173 = product of:
      0.027672518 = sum of:
        0.027672518 = product of:
          0.055345036 = sum of:
            0.055345036 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
              0.055345036 = score(doc=3107,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  13. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.01
    0.009224173 = product of:
      0.027672518 = sum of:
        0.027672518 = product of:
          0.055345036 = sum of:
            0.055345036 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
              0.055345036 = score(doc=2417,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  14. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01
    0.007379338 = product of:
      0.022138014 = sum of:
        0.022138014 = product of:
          0.04427603 = sum of:
            0.04427603 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.04427603 = score(doc=5002,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  15. Sanderson, M.: ¬The Reuters test collection (1996) 0.01
    0.007379338 = product of:
      0.022138014 = sum of:
        0.022138014 = product of:
          0.04427603 = sum of:
            0.04427603 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
              0.04427603 = score(doc=6971,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  16. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.01
    0.007379338 = product of:
      0.022138014 = sum of:
        0.022138014 = product of:
          0.04427603 = sum of:
            0.04427603 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
              0.04427603 = score(doc=744,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  17. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.01
    0.007379338 = product of:
      0.022138014 = sum of:
        0.022138014 = product of:
          0.04427603 = sum of:
            0.04427603 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
              0.04427603 = score(doc=3087,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  18. Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.01
    0.007379338 = product of:
      0.022138014 = sum of:
        0.022138014 = product of:
          0.04427603 = sum of:
            0.04427603 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
              0.04427603 = score(doc=3572,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  19. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.01
    0.007379338 = product of:
      0.022138014 = sum of:
        0.022138014 = product of:
          0.04427603 = sum of:
            0.04427603 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
              0.04427603 = score(doc=261,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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
  20. Ellis, D.: Progress and problems in information retrieval (1996) 0.01
    0.007379338 = product of:
      0.022138014 = sum of:
        0.022138014 = product of:
          0.04427603 = sum of:
            0.04427603 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
              0.04427603 = score(doc=789,freq=2.0), product of:
                0.14304696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.040849205 = 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

Languages

  • e 35
  • d 6
  • f 1
  • More… Less…

Types

  • a 38
  • s 3
  • m 2
  • r 1
  • More… Less…