Document (#34810)

Author
Schomburg, S.
Prante, J.
Title
Search Engine Federation in Libraries - Suchmaschinenföderation in Bibliotheken
Source
http://www.hbz-nrw.de/dokumentencenter/produkte/suchraum/Vortrag_SchomburgPrante.pdf/view
Year
2009
Abstract
The hbz (Academic Library Center, Cologne) has a strong focus on search engine applications: Beyond the projected integration of respective technologies into the new release of the Digital Library portal solution (DigiBib6), vascoda background services also apply and take advantage of search engine technology. Experience since 2003 has given proof that building and updating of search engine indexes involves a vast amount of resources. The use of search engine federations, however, pledges major improvements: The total amount of data records held in linked indexes can be almost unlimited but also allow for a joint output of all hits retrieved. A federation also comes with excellent response times - hits retrieved can also refer to or link into the original system's layout. Nonetheless, the major challenge these days is different search engine technologies, e.g. Lucene and FAST, the variations in terms of ranking, and the implementation or non-implementation of so-called drill-downs. The lecture is designed to give a brief insight into the hbz search engine workshop with an introduction to the special project state of play.
Content
Vortrag, anlässlich der 9. Internationalen Bielefeld-Konferenz 2009, 3. - 5. Februar 2009. - Vgl.: http://conference.ub.uni-bielefeld.de/2009/programme/.
Theme
Suchmaschinen

Similar documents (author)

  1. Schaufler, K.; Schomburg, C.: Redesign der Homepage der Bayerischen Staatsbibliothek (1998) 4.95
    4.952564 = sum of:
      4.952564 = weight(author_txt:schomburg in 1065) [ClassicSimilarity], result of:
        4.952564 = fieldWeight in 1065, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.905128 = idf(docFreq=5, maxDocs=44218)
          0.5 = fieldNorm(doc=1065)
    
  2. Diedrichs, R.; Conradt, V.; Schomburg, S.: ¬Die Neuausrichtung überregionaler Verbundsysteme - die Zukunft der Bibliotheksinfrastruktur in der Cloud : ein Beitrag von BSZ, GBV und hbz (2014) 3.71
    3.7144227 = sum of:
      3.7144227 = weight(author_txt:schomburg in 2579) [ClassicSimilarity], result of:
        3.7144227 = fieldWeight in 2579, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.905128 = idf(docFreq=5, maxDocs=44218)
          0.375 = fieldNorm(doc=2579)
    
  3. Wiesenmüller, H.; Jendral, L.; Schäffler, H.; Schomburg, S.; Höck, C.; Kohlmann, M.: Auswahlkriterien für das Sammeln von Netzpublikationen im Rahmen des elektronischen Pflichtexemplars Empfehlungen der Arbeitsgemeinschaft der Regionalbibliotheken (2004) 2.48
    2.476282 = sum of:
      2.476282 = weight(author_txt:schomburg in 2983) [ClassicSimilarity], result of:
        2.476282 = fieldWeight in 2983, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.905128 = idf(docFreq=5, maxDocs=44218)
          0.25 = fieldNorm(doc=2983)
    
  4. Hüning, C.; Jansen, H.; Kauke, V.; Roschanski, J.; Schackmann, E.; Schomburg, S.; Selbach, M.: ¬Der Umstieg auf die neuen Bibliothekssysteme : Herausforderungen am Beispiel der FH Münster und des hbz-Verbundes (2016) 2.48
    2.476282 = sum of:
      2.476282 = weight(author_txt:schomburg in 3741) [ClassicSimilarity], result of:
        2.476282 = fieldWeight in 3741, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.905128 = idf(docFreq=5, maxDocs=44218)
          0.25 = fieldNorm(doc=3741)
    

Similar documents (content)

  1. Hogan, A.; Harth, A.; Umbrich, J.; Kinsella, S.; Polleres, A.; Decker, S.: Searching and browsing Linked Data with SWSE : the Semantic Web Search Engine (2011) 0.16
    0.16282484 = sum of:
      0.16282484 = product of:
        0.6784369 = sum of:
          0.037505273 = weight(abstract_txt:technologies in 438) [ClassicSimilarity], result of:
            0.037505273 = score(doc=438,freq=1.0), product of:
              0.12046249 = queryWeight, product of:
                1.4008887 = boost
                4.981504 = idf(docFreq=824, maxDocs=44218)
                0.017261866 = queryNorm
              0.311344 = fieldWeight in 438, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.981504 = idf(docFreq=824, maxDocs=44218)
                0.0625 = fieldNorm(doc=438)
          0.07467547 = weight(abstract_txt:implementation in 438) [ClassicSimilarity], result of:
            0.07467547 = score(doc=438,freq=3.0), product of:
              0.13219099 = queryWeight, product of:
                1.4675018 = boost
                5.2183776 = idf(docFreq=650, maxDocs=44218)
                0.017261866 = queryNorm
              0.56490594 = fieldWeight in 438, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.2183776 = idf(docFreq=650, maxDocs=44218)
                0.0625 = fieldNorm(doc=438)
          0.03267786 = weight(abstract_txt:into in 438) [ClassicSimilarity], result of:
            0.03267786 = score(doc=438,freq=2.0), product of:
              0.09984196 = queryWeight, product of:
                1.5619959 = boost
                3.7029297 = idf(docFreq=2962, maxDocs=44218)
                0.017261866 = queryNorm
              0.32729584 = fieldWeight in 438, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.7029297 = idf(docFreq=2962, maxDocs=44218)
                0.0625 = fieldNorm(doc=438)
          0.04762931 = weight(abstract_txt:also in 438) [ClassicSimilarity], result of:
            0.04762931 = score(doc=438,freq=4.0), product of:
              0.11212346 = queryWeight, product of:
                1.9113531 = boost
                3.3983476 = idf(docFreq=4017, maxDocs=44218)
                0.017261866 = queryNorm
              0.42479345 = fieldWeight in 438, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.3983476 = idf(docFreq=4017, maxDocs=44218)
                0.0625 = fieldNorm(doc=438)
          0.12732227 = weight(abstract_txt:search in 438) [ClassicSimilarity], result of:
            0.12732227 = score(doc=438,freq=6.0), product of:
              0.22735201 = queryWeight, product of:
                3.6004858 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017261866 = queryNorm
              0.56002265 = fieldWeight in 438, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=438)
          0.35862666 = weight(abstract_txt:engine in 438) [ClassicSimilarity], result of:
            0.35862666 = score(doc=438,freq=4.0), product of:
              0.51906455 = queryWeight, product of:
                5.4402943 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.017261866 = queryNorm
              0.69090956 = fieldWeight in 438, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.0625 = fieldNorm(doc=438)
        0.24 = coord(6/25)
    
  2. Van der Walt, M.: South African search engines, directories and portals : a survey and evaluation (2000) 0.15
    0.15290251 = sum of:
      0.15290251 = product of:
        0.76451254 = sum of:
          0.07052708 = weight(abstract_txt:retrieved in 136) [ClassicSimilarity], result of:
            0.07052708 = score(doc=136,freq=1.0), product of:
              0.15815668 = queryWeight, product of:
                1.6051716 = boost
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.017261866 = queryNorm
              0.4459317 = fieldWeight in 136, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.078125 = fieldNorm(doc=136)
          0.029768318 = weight(abstract_txt:also in 136) [ClassicSimilarity], result of:
            0.029768318 = score(doc=136,freq=1.0), product of:
              0.11212346 = queryWeight, product of:
                1.9113531 = boost
                3.3983476 = idf(docFreq=4017, maxDocs=44218)
                0.017261866 = queryNorm
              0.2654959 = fieldWeight in 136, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3983476 = idf(docFreq=4017, maxDocs=44218)
                0.078125 = fieldNorm(doc=136)
          0.1634591 = weight(abstract_txt:hits in 136) [ClassicSimilarity], result of:
            0.1634591 = score(doc=136,freq=1.0), product of:
              0.27698508 = queryWeight, product of:
                2.1242514 = boost
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.017261866 = queryNorm
              0.5901369 = fieldWeight in 136, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.078125 = fieldNorm(doc=136)
          0.18377386 = weight(abstract_txt:search in 136) [ClassicSimilarity], result of:
            0.18377386 = score(doc=136,freq=8.0), product of:
              0.22735201 = queryWeight, product of:
                3.6004858 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017261866 = queryNorm
              0.808323 = fieldWeight in 136, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.078125 = fieldNorm(doc=136)
          0.31698415 = weight(abstract_txt:engine in 136) [ClassicSimilarity], result of:
            0.31698415 = score(doc=136,freq=2.0), product of:
              0.51906455 = queryWeight, product of:
                5.4402943 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.017261866 = queryNorm
              0.6106835 = fieldWeight in 136, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.078125 = fieldNorm(doc=136)
        0.2 = coord(5/25)
    
  3. Grossman, D.A.; Frieder, O.: Information retrieval : algorithms and heuristics (2004) 0.14
    0.13770165 = sum of:
      0.13770165 = product of:
        0.4917916 = sum of:
          0.054568432 = weight(abstract_txt:updating in 1486) [ClassicSimilarity], result of:
            0.054568432 = score(doc=1486,freq=1.0), product of:
              0.12276501 = queryWeight, product of:
                7.11192 = idf(docFreq=97, maxDocs=44218)
                0.017261866 = queryNorm
              0.444495 = fieldWeight in 1486, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.11192 = idf(docFreq=97, maxDocs=44218)
                0.0625 = fieldNorm(doc=1486)
          0.030630065 = weight(abstract_txt:major in 1486) [ClassicSimilarity], result of:
            0.030630065 = score(doc=1486,freq=1.0), product of:
              0.10525003 = queryWeight, product of:
                1.3094497 = boost
                4.6563506 = idf(docFreq=1141, maxDocs=44218)
                0.017261866 = queryNorm
              0.2910219 = fieldWeight in 1486, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6563506 = idf(docFreq=1141, maxDocs=44218)
                0.0625 = fieldNorm(doc=1486)
          0.043113906 = weight(abstract_txt:implementation in 1486) [ClassicSimilarity], result of:
            0.043113906 = score(doc=1486,freq=1.0), product of:
              0.13219099 = queryWeight, product of:
                1.4675018 = boost
                5.2183776 = idf(docFreq=650, maxDocs=44218)
                0.017261866 = queryNorm
              0.3261486 = fieldWeight in 1486, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2183776 = idf(docFreq=650, maxDocs=44218)
                0.0625 = fieldNorm(doc=1486)
          0.023106735 = weight(abstract_txt:into in 1486) [ClassicSimilarity], result of:
            0.023106735 = score(doc=1486,freq=1.0), product of:
              0.09984196 = queryWeight, product of:
                1.5619959 = boost
                3.7029297 = idf(docFreq=2962, maxDocs=44218)
                0.017261866 = queryNorm
              0.23143311 = fieldWeight in 1486, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7029297 = idf(docFreq=2962, maxDocs=44218)
                0.0625 = fieldNorm(doc=1486)
          0.057100926 = weight(abstract_txt:indexes in 1486) [ClassicSimilarity], result of:
            0.057100926 = score(doc=1486,freq=1.0), product of:
              0.15942352 = queryWeight, product of:
                1.6115875 = boost
                5.7307405 = idf(docFreq=389, maxDocs=44218)
                0.017261866 = queryNorm
              0.35817128 = fieldWeight in 1486, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7307405 = idf(docFreq=389, maxDocs=44218)
                0.0625 = fieldNorm(doc=1486)
          0.1039582 = weight(abstract_txt:search in 1486) [ClassicSimilarity], result of:
            0.1039582 = score(doc=1486,freq=4.0), product of:
              0.22735201 = queryWeight, product of:
                3.6004858 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017261866 = queryNorm
              0.45725656 = fieldWeight in 1486, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=1486)
          0.17931333 = weight(abstract_txt:engine in 1486) [ClassicSimilarity], result of:
            0.17931333 = score(doc=1486,freq=1.0), product of:
              0.51906455 = queryWeight, product of:
                5.4402943 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.017261866 = queryNorm
              0.34545478 = fieldWeight in 1486, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.0625 = fieldNorm(doc=1486)
        0.28 = coord(7/25)
    
  4. Jepsen, E.T.; Seiden, P.; Ingwersen, P.; Björneborn, L.; Borlund, P.: Characteristics of scientific Web publications : preliminary data gathering and analysis (2004) 0.13
    0.13223656 = sum of:
      0.13223656 = product of:
        0.66118276 = sum of:
          0.079792276 = weight(abstract_txt:retrieved in 3091) [ClassicSimilarity], result of:
            0.079792276 = score(doc=3091,freq=2.0), product of:
              0.15815668 = queryWeight, product of:
                1.6051716 = boost
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.017261866 = queryNorm
              0.5045141 = fieldWeight in 3091, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.0625 = fieldNorm(doc=3091)
          0.023814656 = weight(abstract_txt:also in 3091) [ClassicSimilarity], result of:
            0.023814656 = score(doc=3091,freq=1.0), product of:
              0.11212346 = queryWeight, product of:
                1.9113531 = boost
                3.3983476 = idf(docFreq=4017, maxDocs=44218)
                0.017261866 = queryNorm
              0.21239673 = fieldWeight in 3091, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3983476 = idf(docFreq=4017, maxDocs=44218)
                0.0625 = fieldNorm(doc=3091)
          0.1307673 = weight(abstract_txt:hits in 3091) [ClassicSimilarity], result of:
            0.1307673 = score(doc=3091,freq=1.0), product of:
              0.27698508 = queryWeight, product of:
                2.1242514 = boost
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.017261866 = queryNorm
              0.47210953 = fieldWeight in 3091, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.0625 = fieldNorm(doc=3091)
          0.1162288 = weight(abstract_txt:search in 3091) [ClassicSimilarity], result of:
            0.1162288 = score(doc=3091,freq=5.0), product of:
              0.22735201 = queryWeight, product of:
                3.6004858 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017261866 = queryNorm
              0.5112284 = fieldWeight in 3091, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=3091)
          0.31057978 = weight(abstract_txt:engine in 3091) [ClassicSimilarity], result of:
            0.31057978 = score(doc=3091,freq=3.0), product of:
              0.51906455 = queryWeight, product of:
                5.4402943 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.017261866 = queryNorm
              0.5983452 = fieldWeight in 3091, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.0625 = fieldNorm(doc=3091)
        0.2 = coord(5/25)
    
  5. Lewandowski, D.: ¬The retrieval effectiveness of web search engines : considering results descriptions (2008) 0.13
    0.13147753 = sum of:
      0.13147753 = product of:
        0.5478231 = sum of:
          0.053052828 = weight(abstract_txt:major in 2345) [ClassicSimilarity], result of:
            0.053052828 = score(doc=2345,freq=3.0), product of:
              0.10525003 = queryWeight, product of:
                1.3094497 = boost
                4.6563506 = idf(docFreq=1141, maxDocs=44218)
                0.017261866 = queryNorm
              0.50406474 = fieldWeight in 2345, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.6563506 = idf(docFreq=1141, maxDocs=44218)
                0.0625 = fieldNorm(doc=2345)
          0.040022038 = weight(abstract_txt:into in 2345) [ClassicSimilarity], result of:
            0.040022038 = score(doc=2345,freq=3.0), product of:
              0.09984196 = queryWeight, product of:
                1.5619959 = boost
                3.7029297 = idf(docFreq=2962, maxDocs=44218)
                0.017261866 = queryNorm
              0.4008539 = fieldWeight in 2345, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.7029297 = idf(docFreq=2962, maxDocs=44218)
                0.0625 = fieldNorm(doc=2345)
          0.06111746 = weight(abstract_txt:amount in 2345) [ClassicSimilarity], result of:
            0.06111746 = score(doc=2345,freq=1.0), product of:
              0.1668145 = queryWeight, product of:
                1.6485214 = boost
                5.8620763 = idf(docFreq=341, maxDocs=44218)
                0.017261866 = queryNorm
              0.36637977 = fieldWeight in 2345, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8620763 = idf(docFreq=341, maxDocs=44218)
                0.0625 = fieldNorm(doc=2345)
          0.023814656 = weight(abstract_txt:also in 2345) [ClassicSimilarity], result of:
            0.023814656 = score(doc=2345,freq=1.0), product of:
              0.11212346 = queryWeight, product of:
                1.9113531 = boost
                3.3983476 = idf(docFreq=4017, maxDocs=44218)
                0.017261866 = queryNorm
              0.21239673 = fieldWeight in 2345, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3983476 = idf(docFreq=4017, maxDocs=44218)
                0.0625 = fieldNorm(doc=2345)
          0.1162288 = weight(abstract_txt:search in 2345) [ClassicSimilarity], result of:
            0.1162288 = score(doc=2345,freq=5.0), product of:
              0.22735201 = queryWeight, product of:
                3.6004858 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017261866 = queryNorm
              0.5112284 = fieldWeight in 2345, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=2345)
          0.25358734 = weight(abstract_txt:engine in 2345) [ClassicSimilarity], result of:
            0.25358734 = score(doc=2345,freq=2.0), product of:
              0.51906455 = queryWeight, product of:
                5.4402943 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.017261866 = queryNorm
              0.48854682 = fieldWeight in 2345, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.0625 = fieldNorm(doc=2345)
        0.24 = coord(6/25)