Search (89 results, page 1 of 5)

  • × theme_ss:"Retrievalalgorithmen"
  1. Fuhr, N.: Modelle im Information Retrieval (2013) 0.04
    0.044999868 = product of:
      0.11249967 = sum of:
        0.06471766 = weight(_text_:w in 724) [ClassicSimilarity], result of:
          0.06471766 = score(doc=724,freq=2.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.42103854 = fieldWeight in 724, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.078125 = fieldNorm(doc=724)
        0.047782008 = weight(_text_:u in 724) [ClassicSimilarity], result of:
          0.047782008 = score(doc=724,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.3617784 = fieldWeight in 724, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.078125 = fieldNorm(doc=724)
      0.4 = coord(2/5)
    
    Source
    Grundlagen der praktischen Information und Dokumentation. Handbuch zur Einführung in die Informationswissenschaft und -praxis. 6., völlig neu gefaßte Ausgabe. Hrsg. von R. Kuhlen, W. Semar u. D. Strauch. Begründet von Klaus Laisiepen, Ernst Lutterbeck, Karl-Heinrich Meyer-Uhlenried
  2. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.04
    0.042059537 = product of:
      0.10514884 = sum of:
        0.06689481 = weight(_text_:u in 2134) [ClassicSimilarity], result of:
          0.06689481 = score(doc=2134,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.50648975 = fieldWeight in 2134, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.109375 = fieldNorm(doc=2134)
        0.03825403 = product of:
          0.07650806 = sum of:
            0.07650806 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.07650806 = score(doc=2134,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.5416616 = fieldWeight in 2134, 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=2134)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    30. 3.2001 13:32:22
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  3. Harman, D.; Fox, E.; Baeza-Yates, R.; Lee, W.: Inverted files (1992) 0.04
    0.03599989 = product of:
      0.08999972 = sum of:
        0.05177412 = weight(_text_:w in 3497) [ClassicSimilarity], result of:
          0.05177412 = score(doc=3497,freq=2.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.33683082 = fieldWeight in 3497, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.0625 = fieldNorm(doc=3497)
        0.038225602 = weight(_text_:u in 3497) [ClassicSimilarity], result of:
          0.038225602 = score(doc=3497,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.28942272 = fieldWeight in 3497, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0625 = fieldNorm(doc=3497)
      0.4 = coord(2/5)
    
    Source
    Information retrieval: data structures and algorithms. Ed.: W.B. Frakes u. R. Baeza-Yates
  4. Spink, A.; Losee, R.M.: Feedback in information retrieval (1996) 0.03
    0.03226722 = product of:
      0.1613361 = sum of:
        0.1613361 = weight(_text_:r.m in 7441) [ClassicSimilarity], result of:
          0.1613361 = score(doc=7441,freq=2.0), product of:
            0.2713378 = queryWeight, product of:
              6.727074 = idf(docFreq=143, maxDocs=44218)
              0.04033519 = queryNorm
            0.59459496 = fieldWeight in 7441, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.727074 = idf(docFreq=143, maxDocs=44218)
              0.0625 = fieldNorm(doc=7441)
      0.2 = coord(1/5)
    
  5. Dominich, S.: Mathematical foundations of information retrieval (2001) 0.03
    0.031351924 = product of:
      0.07837981 = sum of:
        0.06471766 = weight(_text_:w in 1753) [ClassicSimilarity], result of:
          0.06471766 = score(doc=1753,freq=8.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.42103854 = fieldWeight in 1753, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1753)
        0.013662154 = product of:
          0.027324308 = sum of:
            0.027324308 = weight(_text_:22 in 1753) [ClassicSimilarity], result of:
              0.027324308 = score(doc=1753,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.19345059 = fieldWeight in 1753, 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=1753)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Classification
    TVA (W)
    TLQ (W)
    Date
    22. 3.2008 12:26:32
    GHBS
    TVA (W)
    TLQ (W)
  6. Losee, R.M.; Church Jr., L.: Are two document clusters better than one? : the cluster performance question for information retrieval (2005) 0.03
    0.028233817 = product of:
      0.14116909 = sum of:
        0.14116909 = weight(_text_:r.m in 3270) [ClassicSimilarity], result of:
          0.14116909 = score(doc=3270,freq=2.0), product of:
            0.2713378 = queryWeight, product of:
              6.727074 = idf(docFreq=143, maxDocs=44218)
              0.04033519 = queryNorm
            0.5202706 = fieldWeight in 3270, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.727074 = idf(docFreq=143, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3270)
      0.2 = coord(1/5)
    
  7. Fox, E.; Betrabet, S.; Koushik, M.; Lee, W.: Extended Boolean models (1992) 0.03
    0.026999919 = product of:
      0.067499794 = sum of:
        0.03883059 = weight(_text_:w in 3512) [ClassicSimilarity], result of:
          0.03883059 = score(doc=3512,freq=2.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.2526231 = fieldWeight in 3512, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.046875 = fieldNorm(doc=3512)
        0.028669203 = weight(_text_:u in 3512) [ClassicSimilarity], result of:
          0.028669203 = score(doc=3512,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.21706703 = fieldWeight in 3512, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.046875 = fieldNorm(doc=3512)
      0.4 = coord(2/5)
    
    Source
    Information retrieval: data structures and algorithms. Ed.: W.B. Frakes u. R. Baeza-Yates
  8. Zhang, W.; Yoshida, T.; Tang, X.: ¬A comparative study of TF*IDF, LSI and multi-words for text classification (2011) 0.03
    0.026999919 = product of:
      0.067499794 = sum of:
        0.03883059 = weight(_text_:w in 1165) [ClassicSimilarity], result of:
          0.03883059 = score(doc=1165,freq=2.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.2526231 = fieldWeight in 1165, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.046875 = fieldNorm(doc=1165)
        0.028669203 = weight(_text_:u in 1165) [ClassicSimilarity], result of:
          0.028669203 = score(doc=1165,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.21706703 = fieldWeight in 1165, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.046875 = fieldNorm(doc=1165)
      0.4 = coord(2/5)
    
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  9. Faloutsos, C.: Signature files (1992) 0.02
    0.02403402 = product of:
      0.060085047 = sum of:
        0.038225602 = weight(_text_:u in 3499) [ClassicSimilarity], result of:
          0.038225602 = score(doc=3499,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.28942272 = fieldWeight in 3499, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0625 = fieldNorm(doc=3499)
        0.021859445 = product of:
          0.04371889 = sum of:
            0.04371889 = weight(_text_:22 in 3499) [ClassicSimilarity], result of:
              0.04371889 = score(doc=3499,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.30952093 = fieldWeight in 3499, 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=3499)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    7. 5.1999 15:22:48
    Source
    Information retrieval: data structures and algorithms. Ed.: W.B. Frakes u. R. Baeza-Yates
  10. Klas, C.-P.; Fuhr, N.; Schaefer, A.: Evaluating strategic support for information access in the DAFFODIL system (2004) 0.02
    0.022775585 = product of:
      0.05693896 = sum of:
        0.040544376 = weight(_text_:u in 2419) [ClassicSimilarity], result of:
          0.040544376 = score(doc=2419,freq=4.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.30697915 = fieldWeight in 2419, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.046875 = fieldNorm(doc=2419)
        0.016394584 = product of:
          0.032789167 = sum of:
            0.032789167 = weight(_text_:22 in 2419) [ClassicSimilarity], result of:
              0.032789167 = score(doc=2419,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.23214069 = fieldWeight in 2419, 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=2419)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    16.11.2008 16:22:48
    Source
    Research and advanced technology for digital libraries : 8th European conference, ECDL 2004, Bath, UK, September 12-17, 2004 : proceedings. Eds.: Heery, R. u. E. Lyon
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  11. Liu, X.; Zheng, W.; Fang, H.: ¬An exploration of ranking models and feedback method for related entity finding (2013) 0.02
    0.022499934 = product of:
      0.056249835 = sum of:
        0.03235883 = weight(_text_:w in 2714) [ClassicSimilarity], result of:
          0.03235883 = score(doc=2714,freq=2.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.21051927 = fieldWeight in 2714, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2714)
        0.023891004 = weight(_text_:u in 2714) [ClassicSimilarity], result of:
          0.023891004 = score(doc=2714,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.1808892 = fieldWeight in 2714, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2714)
      0.4 = coord(2/5)
    
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  12. Fan, W.; Fox, E.A.; Pathak, P.; Wu, H.: ¬The effects of fitness functions an genetic programming-based ranking discovery for Web search (2004) 0.02
    0.022090068 = product of:
      0.05522517 = sum of:
        0.03883059 = weight(_text_:w in 2239) [ClassicSimilarity], result of:
          0.03883059 = score(doc=2239,freq=2.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.2526231 = fieldWeight in 2239, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.046875 = fieldNorm(doc=2239)
        0.016394584 = product of:
          0.032789167 = sum of:
            0.032789167 = weight(_text_:22 in 2239) [ClassicSimilarity], result of:
              0.032789167 = score(doc=2239,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.23214069 = fieldWeight in 2239, 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=2239)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    31. 5.2004 19:22:06
  13. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.02
    0.021029769 = product of:
      0.05257442 = sum of:
        0.033447403 = weight(_text_:u in 1319) [ClassicSimilarity], result of:
          0.033447403 = score(doc=1319,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.25324488 = fieldWeight in 1319, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1319)
        0.019127015 = product of:
          0.03825403 = sum of:
            0.03825403 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
              0.03825403 = score(doc=1319,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.2708308 = fieldWeight in 1319, 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=1319)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    1. 8.1996 22:08:06
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  14. Silva, R.M.; Gonçalves, M.A.; Veloso, A.: ¬A Two-stage active learning method for learning to rank (2014) 0.02
    0.020167012 = product of:
      0.100835055 = sum of:
        0.100835055 = weight(_text_:r.m in 1184) [ClassicSimilarity], result of:
          0.100835055 = score(doc=1184,freq=2.0), product of:
            0.2713378 = queryWeight, product of:
              6.727074 = idf(docFreq=143, maxDocs=44218)
              0.04033519 = queryNorm
            0.37162185 = fieldWeight in 1184, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.727074 = idf(docFreq=143, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1184)
      0.2 = coord(1/5)
    
  15. Soulier, L.; Jabeur, L.B.; Tamine, L.; Bahsoun, W.: On ranking relevant entities in heterogeneous networks using a language-based model (2013) 0.02
    0.018408393 = product of:
      0.046020985 = sum of:
        0.03235883 = weight(_text_:w in 664) [ClassicSimilarity], result of:
          0.03235883 = score(doc=664,freq=2.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.21051927 = fieldWeight in 664, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.0390625 = fieldNorm(doc=664)
        0.013662154 = product of:
          0.027324308 = sum of:
            0.027324308 = weight(_text_:22 in 664) [ClassicSimilarity], result of:
              0.027324308 = score(doc=664,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.19345059 = fieldWeight in 664, 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=664)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 3.2013 19:34:49
  16. Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 0.02
    0.015021264 = product of:
      0.037553158 = sum of:
        0.023891004 = weight(_text_:u in 5697) [ClassicSimilarity], result of:
          0.023891004 = score(doc=5697,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.1808892 = fieldWeight in 5697, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5697)
        0.013662154 = product of:
          0.027324308 = sum of:
            0.027324308 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
              0.027324308 = score(doc=5697,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.19345059 = fieldWeight in 5697, 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=5697)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 2.1996 13:14:10
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  17. Song, D.; Bruza, P.D.: Towards context sensitive information inference (2003) 0.02
    0.015021264 = product of:
      0.037553158 = sum of:
        0.023891004 = weight(_text_:u in 1428) [ClassicSimilarity], result of:
          0.023891004 = score(doc=1428,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.1808892 = fieldWeight in 1428, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1428)
        0.013662154 = product of:
          0.027324308 = sum of:
            0.027324308 = weight(_text_:22 in 1428) [ClassicSimilarity], result of:
              0.027324308 = score(doc=1428,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.19345059 = fieldWeight in 1428, 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=1428)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 3.2003 19:35:46
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  18. Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006) 0.02
    0.015021264 = product of:
      0.037553158 = sum of:
        0.023891004 = weight(_text_:u in 56) [ClassicSimilarity], result of:
          0.023891004 = score(doc=56,freq=2.0), product of:
            0.13207534 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.04033519 = queryNorm
            0.1808892 = fieldWeight in 56, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.0390625 = fieldNorm(doc=56)
        0.013662154 = product of:
          0.027324308 = sum of:
            0.027324308 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
              0.027324308 = score(doc=56,freq=2.0), product of:
                0.14124696 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04033519 = queryNorm
                0.19345059 = fieldWeight in 56, 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=56)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 7.2006 16:32:43
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  19. Jacso, P.: Testing the calculation of a realistic h-index in Google Scholar, Scopus, and Web of Science for F. W. Lancaster (2008) 0.01
    0.014471307 = product of:
      0.07235654 = sum of:
        0.07235654 = weight(_text_:w in 5586) [ClassicSimilarity], result of:
          0.07235654 = score(doc=5586,freq=10.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.4707354 = fieldWeight in 5586, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5586)
      0.2 = coord(1/5)
    
    Abstract
    This paper focuses on the practical limitations in the content and software of the databases that are used to calculate the h-index for assessing the publishing productivity and impact of researchers. To celebrate F. W. Lancaster's biological age of seventy-five, and "scientific age" of forty-five, this paper discusses the related features of Google Scholar, Scopus, and Web of Science (WoS), and demonstrates in the latter how a much more realistic and fair h-index can be computed for F. W. Lancaster than the one produced automatically. Browsing and searching the cited reference index of the 1945-2007 edition of WoS, which in my estimate has over a hundred million "orphan references" that have no counterpart master records to be attached to, and "stray references" that cite papers which do have master records but cannot be identified by the matching algorithm because of errors of omission and commission in the references of the citing works, can bring up hundreds of additional cited references given to works of an accomplished author but are ignored in the automatic process of calculating the h-index. The partially manual process doubled the h-index value for F. W. Lancaster from 13 to 26, which is a much more realistic value for an information scientist and professor of his stature.
    Content
    Beitrag in einem Themenheft 'The Influence of F. W. Lancaster on Information Science and on Libraries', das als Festschrift für F.W. Lancaster deklariert ist.
  20. Zhang, W.; Korf, R.E.: Performance of linear-space search algorithms (1995) 0.01
    0.012943531 = product of:
      0.06471766 = sum of:
        0.06471766 = weight(_text_:w in 4744) [ClassicSimilarity], result of:
          0.06471766 = score(doc=4744,freq=2.0), product of:
            0.15370958 = queryWeight, product of:
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.04033519 = queryNorm
            0.42103854 = fieldWeight in 4744, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8108058 = idf(docFreq=2659, maxDocs=44218)
              0.078125 = fieldNorm(doc=4744)
      0.2 = coord(1/5)
    

Languages

  • e 77
  • d 11
  • m 1
  • More… Less…

Types

  • a 82
  • m 4
  • s 3
  • el 1
  • p 1
  • r 1
  • More… Less…