Document (#37433)

Author
Bergamaschi, S.
Domnori, E.
Guerra, F.
Rota, S.
Lado, R.T.
Velegrakis, Y.
Title
Understanding the semantics of keyword queries on relational data without accessing the instance
Source
Semantic search over the Web. Eds.: R. De Virgilio, et al
Imprint
Berlin : Springer
Year
2012
Pages
S.131-158
Series
Data-centric systems and applications
Abstract
The birth of the Web has brought an exponential growth to the amount of the information that is freely available to the Internet population, overloading users and entangling their efforts to satisfy their information needs. Web search engines such Google, Yahoo, or Bing have become popular mainly due to the fact that they offer an easy-to-use query interface (i.e., based on keywords) and an effective and efficient query execution mechanism. The majority of these search engines do not consider information stored on the deep or hidden Web [9,28], despite the fact that the size of the deep Web is estimated to be much bigger than the surface Web [9,47]. There have been a number of systems that record interactions with the deep Web sources or automatically submit queries them (mainly through their Web form interfaces) in order to index their context. Unfortunately, this technique is only partially indexing the data instance. Moreover, it is not possible to take advantage of the query capabilities of data sources, for example, of the relational query features, because their interface is often restricted from the Web form. Besides, Web search engines focus on retrieving documents and not on querying structured sources, so they are unable to access information based on concepts.
Theme
Semantic Web
Semantisches Umfeld in Indexierung u. Retrieval

Similar documents (content)

  1. Zhu, Y.; Yan, E.; Song, I.-Y..: ¬The use of a graph-based system to improve bibliographic information retrieval : system design, implementation, and evaluation (2017) 0.28
    0.28151587 = sum of:
      0.28151587 = product of:
        0.7819885 = sum of:
          0.123260796 = weight(abstract_txt:execution in 275) [ClassicSimilarity], result of:
            0.123260796 = score(doc=275,freq=1.0), product of:
              0.19120653 = queryWeight, product of:
                1.0818312 = boost
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.021419583 = queryNorm
              0.6446474 = fieldWeight in 275, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
          0.035049703 = weight(abstract_txt:form in 275) [ClassicSimilarity], result of:
            0.035049703 = score(doc=275,freq=1.0), product of:
              0.104172304 = queryWeight, product of:
                1.1292739 = boost
                4.306674 = idf(docFreq=1549, maxDocs=42306)
                0.021419583 = queryNorm
              0.33645892 = fieldWeight in 275, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.306674 = idf(docFreq=1549, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
          0.017261172 = weight(abstract_txt:that in 275) [ClassicSimilarity], result of:
            0.017261172 = score(doc=275,freq=2.0), product of:
              0.064964525 = queryWeight, product of:
                1.2611777 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.021419583 = queryNorm
              0.2657015 = fieldWeight in 275, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
          0.070372134 = weight(abstract_txt:interface in 275) [ClassicSimilarity], result of:
            0.070372134 = score(doc=275,freq=2.0), product of:
              0.1315891 = queryWeight, product of:
                1.2692089 = boost
                4.840339 = idf(docFreq=908, maxDocs=42306)
                0.021419583 = queryNorm
              0.53478694 = fieldWeight in 275, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.840339 = idf(docFreq=908, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
          0.028361745 = weight(abstract_txt:information in 275) [ClassicSimilarity], result of:
            0.028361745 = score(doc=275,freq=5.0), product of:
              0.066650696 = queryWeight, product of:
                1.27744 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.021419583 = queryNorm
              0.4255281 = fieldWeight in 275, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
          0.11603513 = weight(abstract_txt:queries in 275) [ClassicSimilarity], result of:
            0.11603513 = score(doc=275,freq=4.0), product of:
              0.14577031 = queryWeight, product of:
                1.33585 = boost
                5.094486 = idf(docFreq=704, maxDocs=42306)
                0.021419583 = queryNorm
              0.7960135 = fieldWeight in 275, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.094486 = idf(docFreq=704, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
          0.16946712 = weight(abstract_txt:relational in 275) [ClassicSimilarity], result of:
            0.16946712 = score(doc=275,freq=2.0), product of:
              0.23641573 = queryWeight, product of:
                1.7012234 = boost
                6.4878983 = idf(docFreq=174, maxDocs=42306)
                0.021419583 = queryNorm
              0.7168183 = fieldWeight in 275, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.4878983 = idf(docFreq=174, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
          0.035971988 = weight(abstract_txt:their in 275) [ClassicSimilarity], result of:
            0.035971988 = score(doc=275,freq=1.0), product of:
              0.14385304 = queryWeight, product of:
                2.098228 = boost
                3.2007766 = idf(docFreq=4683, maxDocs=42306)
                0.021419583 = queryNorm
              0.25006068 = fieldWeight in 275, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2007766 = idf(docFreq=4683, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
          0.18620872 = weight(abstract_txt:query in 275) [ClassicSimilarity], result of:
            0.18620872 = score(doc=275,freq=4.0), product of:
              0.2517403 = queryWeight, product of:
                2.4826443 = boost
                4.733989 = idf(docFreq=1010, maxDocs=42306)
                0.021419583 = queryNorm
              0.7396858 = fieldWeight in 275, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.733989 = idf(docFreq=1010, maxDocs=42306)
                0.078125 = fieldNorm(doc=275)
        0.36 = coord(9/25)
    
  2. Bizer, C.; Mendes, P.N.; Jentzsch, A.: Topology of the Web of Data (2012) 0.26
    0.25912943 = sum of:
      0.25912943 = product of:
        0.6478236 = sum of:
          0.02453479 = weight(abstract_txt:form in 2426) [ClassicSimilarity], result of:
            0.02453479 = score(doc=2426,freq=1.0), product of:
              0.104172304 = queryWeight, product of:
                1.1292739 = boost
                4.306674 = idf(docFreq=1549, maxDocs=42306)
                0.021419583 = queryNorm
              0.23552123 = fieldWeight in 2426, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.306674 = idf(docFreq=1549, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.10141877 = weight(abstract_txt:bing in 2426) [ClassicSimilarity], result of:
            0.10141877 = score(doc=2426,freq=1.0), product of:
              0.21296078 = queryWeight, product of:
                1.1417156 = boost
                8.708245 = idf(docFreq=18, maxDocs=42306)
                0.021419583 = queryNorm
              0.47623217 = fieldWeight in 2426, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.708245 = idf(docFreq=18, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.014798372 = weight(abstract_txt:that in 2426) [ClassicSimilarity], result of:
            0.014798372 = score(doc=2426,freq=3.0), product of:
              0.064964525 = queryWeight, product of:
                1.2611777 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.021419583 = queryNorm
              0.22779158 = fieldWeight in 2426, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.00887863 = weight(abstract_txt:information in 2426) [ClassicSimilarity], result of:
            0.00887863 = score(doc=2426,freq=1.0), product of:
              0.066650696 = queryWeight, product of:
                1.27744 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.021419583 = queryNorm
              0.13321136 = fieldWeight in 2426, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.05914572 = weight(abstract_txt:data in 2426) [ClassicSimilarity], result of:
            0.05914572 = score(doc=2426,freq=11.0), product of:
              0.09640046 = queryWeight, product of:
                1.33048 = boost
                3.382671 = idf(docFreq=3904, maxDocs=42306)
                0.021419583 = queryNorm
              0.61354184 = fieldWeight in 2426, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                3.382671 = idf(docFreq=3904, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.0636652 = weight(abstract_txt:search in 2426) [ClassicSimilarity], result of:
            0.0636652 = score(doc=2426,freq=8.0), product of:
              0.112589836 = queryWeight, product of:
                1.4378659 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.021419583 = queryNorm
              0.5654613 = fieldWeight in 2426, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.08388194 = weight(abstract_txt:relational in 2426) [ClassicSimilarity], result of:
            0.08388194 = score(doc=2426,freq=1.0), product of:
              0.23641573 = queryWeight, product of:
                1.7012234 = boost
                6.4878983 = idf(docFreq=174, maxDocs=42306)
                0.021419583 = queryNorm
              0.35480693 = fieldWeight in 2426, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.4878983 = idf(docFreq=174, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.097966306 = weight(abstract_txt:instance in 2426) [ClassicSimilarity], result of:
            0.097966306 = score(doc=2426,freq=1.0), product of:
              0.26218945 = queryWeight, product of:
                1.7915576 = boost
                6.8324027 = idf(docFreq=123, maxDocs=42306)
                0.021419583 = queryNorm
              0.37364703 = fieldWeight in 2426, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8324027 = idf(docFreq=123, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.16835345 = weight(abstract_txt:engines in 2426) [ClassicSimilarity], result of:
            0.16835345 = score(doc=2426,freq=6.0), product of:
              0.2369693 = queryWeight, product of:
                2.0860026 = boost
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.021419583 = queryNorm
              0.71044415 = fieldWeight in 2426, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
          0.02518039 = weight(abstract_txt:their in 2426) [ClassicSimilarity], result of:
            0.02518039 = score(doc=2426,freq=1.0), product of:
              0.14385304 = queryWeight, product of:
                2.098228 = boost
                3.2007766 = idf(docFreq=4683, maxDocs=42306)
                0.021419583 = queryNorm
              0.17504247 = fieldWeight in 2426, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2007766 = idf(docFreq=4683, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2426)
        0.4 = coord(10/25)
    
  3. Warnick, W.L.; Leberman, A.; Scott, R.L.; Spence, K.J.; Johnsom, L.A.; Allen, V.S.: Searching the deep Web : directed query engine applications at the Department of Energy (2001) 0.24
    0.24189107 = sum of:
      0.24189107 = product of:
        0.7559096 = sum of:
          0.035049703 = weight(abstract_txt:form in 3216) [ClassicSimilarity], result of:
            0.035049703 = score(doc=3216,freq=1.0), product of:
              0.104172304 = queryWeight, product of:
                1.1292739 = boost
                4.306674 = idf(docFreq=1549, maxDocs=42306)
                0.021419583 = queryNorm
              0.33645892 = fieldWeight in 3216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.306674 = idf(docFreq=1549, maxDocs=42306)
                0.078125 = fieldNorm(doc=3216)
          0.012205492 = weight(abstract_txt:that in 3216) [ClassicSimilarity], result of:
            0.012205492 = score(doc=3216,freq=1.0), product of:
              0.064964525 = queryWeight, product of:
                1.2611777 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.021419583 = queryNorm
              0.18787934 = fieldWeight in 3216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.078125 = fieldNorm(doc=3216)
          0.025367515 = weight(abstract_txt:information in 3216) [ClassicSimilarity], result of:
            0.025367515 = score(doc=3216,freq=4.0), product of:
              0.066650696 = queryWeight, product of:
                1.27744 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.021419583 = queryNorm
              0.3806039 = fieldWeight in 3216, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.078125 = fieldNorm(doc=3216)
          0.03215578 = weight(abstract_txt:search in 3216) [ClassicSimilarity], result of:
            0.03215578 = score(doc=3216,freq=1.0), product of:
              0.112589836 = queryWeight, product of:
                1.4378659 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.021419583 = queryNorm
              0.28560108 = fieldWeight in 3216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.078125 = fieldNorm(doc=3216)
          0.07135301 = weight(abstract_txt:sources in 3216) [ClassicSimilarity], result of:
            0.07135301 = score(doc=3216,freq=1.0), product of:
              0.19154376 = queryWeight, product of:
                1.8754383 = boost
                4.7681975 = idf(docFreq=976, maxDocs=42306)
                0.021419583 = queryNorm
              0.37251544 = fieldWeight in 3216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7681975 = idf(docFreq=976, maxDocs=42306)
                0.078125 = fieldNorm(doc=3216)
          0.17006268 = weight(abstract_txt:engines in 3216) [ClassicSimilarity], result of:
            0.17006268 = score(doc=3216,freq=3.0), product of:
              0.2369693 = queryWeight, product of:
                2.0860026 = boost
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.021419583 = queryNorm
              0.71765697 = fieldWeight in 3216, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.078125 = fieldNorm(doc=3216)
          0.20818768 = weight(abstract_txt:query in 3216) [ClassicSimilarity], result of:
            0.20818768 = score(doc=3216,freq=5.0), product of:
              0.2517403 = queryWeight, product of:
                2.4826443 = boost
                4.733989 = idf(docFreq=1010, maxDocs=42306)
                0.021419583 = queryNorm
              0.8269938 = fieldWeight in 3216, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.733989 = idf(docFreq=1010, maxDocs=42306)
                0.078125 = fieldNorm(doc=3216)
          0.20152779 = weight(abstract_txt:deep in 3216) [ClassicSimilarity], result of:
            0.20152779 = score(doc=3216,freq=1.0), product of:
              0.38272175 = queryWeight, product of:
                2.6510038 = boost
                6.7400293 = idf(docFreq=135, maxDocs=42306)
                0.021419583 = queryNorm
              0.5265648 = fieldWeight in 3216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7400293 = idf(docFreq=135, maxDocs=42306)
                0.078125 = fieldNorm(doc=3216)
        0.32 = coord(8/25)
    
  4. Barrio, P.; Gravano, L.: Sampling strategies for information extraction over the deep web (2017) 0.22
    0.21978572 = sum of:
      0.21978572 = product of:
        0.6868304 = sum of:
          0.12202195 = weight(abstract_txt:execution in 331) [ClassicSimilarity], result of:
            0.12202195 = score(doc=331,freq=2.0), product of:
              0.19120653 = queryWeight, product of:
                1.0818312 = boost
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.021419583 = queryNorm
              0.63816833 = fieldWeight in 331, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.0546875 = fieldNorm(doc=331)
          0.02453479 = weight(abstract_txt:form in 331) [ClassicSimilarity], result of:
            0.02453479 = score(doc=331,freq=1.0), product of:
              0.104172304 = queryWeight, product of:
                1.1292739 = boost
                4.306674 = idf(docFreq=1549, maxDocs=42306)
                0.021419583 = queryNorm
              0.23552123 = fieldWeight in 331, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.306674 = idf(docFreq=1549, maxDocs=42306)
                0.0546875 = fieldNorm(doc=331)
          0.008543844 = weight(abstract_txt:that in 331) [ClassicSimilarity], result of:
            0.008543844 = score(doc=331,freq=1.0), product of:
              0.064964525 = queryWeight, product of:
                1.2611777 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.021419583 = queryNorm
              0.13151553 = fieldWeight in 331, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.0546875 = fieldNorm(doc=331)
          0.025112556 = weight(abstract_txt:information in 331) [ClassicSimilarity], result of:
            0.025112556 = score(doc=331,freq=8.0), product of:
              0.066650696 = queryWeight, product of:
                1.27744 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.021419583 = queryNorm
              0.3767786 = fieldWeight in 331, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.0546875 = fieldNorm(doc=331)
          0.025219817 = weight(abstract_txt:data in 331) [ClassicSimilarity], result of:
            0.025219817 = score(doc=331,freq=2.0), product of:
              0.09640046 = queryWeight, product of:
                1.33048 = boost
                3.382671 = idf(docFreq=3904, maxDocs=42306)
                0.021419583 = queryNorm
              0.2616151 = fieldWeight in 331, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.382671 = idf(docFreq=3904, maxDocs=42306)
                0.0546875 = fieldNorm(doc=331)
          0.035610452 = weight(abstract_txt:their in 331) [ClassicSimilarity], result of:
            0.035610452 = score(doc=331,freq=2.0), product of:
              0.14385304 = queryWeight, product of:
                2.098228 = boost
                3.2007766 = idf(docFreq=4683, maxDocs=42306)
                0.021419583 = queryNorm
              0.24754745 = fieldWeight in 331, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.2007766 = idf(docFreq=4683, maxDocs=42306)
                0.0546875 = fieldNorm(doc=331)
          0.1303461 = weight(abstract_txt:query in 331) [ClassicSimilarity], result of:
            0.1303461 = score(doc=331,freq=4.0), product of:
              0.2517403 = queryWeight, product of:
                2.4826443 = boost
                4.733989 = idf(docFreq=1010, maxDocs=42306)
                0.021419583 = queryNorm
              0.51778 = fieldWeight in 331, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.733989 = idf(docFreq=1010, maxDocs=42306)
                0.0546875 = fieldNorm(doc=331)
          0.3154409 = weight(abstract_txt:deep in 331) [ClassicSimilarity], result of:
            0.3154409 = score(doc=331,freq=5.0), product of:
              0.38272175 = queryWeight, product of:
                2.6510038 = boost
                6.7400293 = idf(docFreq=135, maxDocs=42306)
                0.021419583 = queryNorm
              0.82420427 = fieldWeight in 331, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.7400293 = idf(docFreq=135, maxDocs=42306)
                0.0546875 = fieldNorm(doc=331)
        0.32 = coord(8/25)
    
  5. Ren, P.; Chen, Z.; Ma, J.; Zhang, Z.; Si, L.; Wang, S.: Detecting temporal patterns of user queries (2017) 0.21
    0.20600356 = sum of:
      0.20600356 = product of:
        0.64376116 = sum of:
          0.012205492 = weight(abstract_txt:that in 234) [ClassicSimilarity], result of:
            0.012205492 = score(doc=234,freq=1.0), product of:
              0.064964525 = queryWeight, product of:
                1.2611777 = boost
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.021419583 = queryNorm
              0.18787934 = fieldWeight in 234, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4048555 = idf(docFreq=10381, maxDocs=42306)
                0.078125 = fieldNorm(doc=234)
          0.012683758 = weight(abstract_txt:information in 234) [ClassicSimilarity], result of:
            0.012683758 = score(doc=234,freq=1.0), product of:
              0.066650696 = queryWeight, product of:
                1.27744 = boost
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.021419583 = queryNorm
              0.19030195 = fieldWeight in 234, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.435865 = idf(docFreq=10064, maxDocs=42306)
                0.078125 = fieldNorm(doc=234)
          0.025475863 = weight(abstract_txt:data in 234) [ClassicSimilarity], result of:
            0.025475863 = score(doc=234,freq=1.0), product of:
              0.09640046 = queryWeight, product of:
                1.33048 = boost
                3.382671 = idf(docFreq=3904, maxDocs=42306)
                0.021419583 = queryNorm
              0.26427117 = fieldWeight in 234, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.382671 = idf(docFreq=3904, maxDocs=42306)
                0.078125 = fieldNorm(doc=234)
          0.16409846 = weight(abstract_txt:queries in 234) [ClassicSimilarity], result of:
            0.16409846 = score(doc=234,freq=8.0), product of:
              0.14577031 = queryWeight, product of:
                1.33585 = boost
                5.094486 = idf(docFreq=704, maxDocs=42306)
                0.021419583 = queryNorm
              1.125733 = fieldWeight in 234, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                5.094486 = idf(docFreq=704, maxDocs=42306)
                0.078125 = fieldNorm(doc=234)
          0.06431156 = weight(abstract_txt:search in 234) [ClassicSimilarity], result of:
            0.06431156 = score(doc=234,freq=4.0), product of:
              0.112589836 = queryWeight, product of:
                1.4378659 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.021419583 = queryNorm
              0.57120216 = fieldWeight in 234, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.078125 = fieldNorm(doc=234)
          0.105538785 = weight(abstract_txt:mainly in 234) [ClassicSimilarity], result of:
            0.105538785 = score(doc=234,freq=1.0), product of:
              0.21722217 = queryWeight, product of:
                1.6307043 = boost
                6.218962 = idf(docFreq=228, maxDocs=42306)
                0.021419583 = queryNorm
              0.4858564 = fieldWeight in 234, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.218962 = idf(docFreq=228, maxDocs=42306)
                0.078125 = fieldNorm(doc=234)
          0.09818573 = weight(abstract_txt:engines in 234) [ClassicSimilarity], result of:
            0.09818573 = score(doc=234,freq=1.0), product of:
              0.2369693 = queryWeight, product of:
                2.0860026 = boost
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.021419583 = queryNorm
              0.41433945 = fieldWeight in 234, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.078125 = fieldNorm(doc=234)
          0.16126147 = weight(abstract_txt:query in 234) [ClassicSimilarity], result of:
            0.16126147 = score(doc=234,freq=3.0), product of:
              0.2517403 = queryWeight, product of:
                2.4826443 = boost
                4.733989 = idf(docFreq=1010, maxDocs=42306)
                0.021419583 = queryNorm
              0.6405866 = fieldWeight in 234, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.733989 = idf(docFreq=1010, maxDocs=42306)
                0.078125 = fieldNorm(doc=234)
        0.32 = coord(8/25)