Document (#37706)

Author
Bast, H.
Bäurle, F.
Buchhold, B.
Haussmann, E.
Title
Broccoli: semantic full-text search at your fingertips
Source
http://arxiv.org/pdf/1207.2615v2.pdf
Year
2012
Abstract
We present Broccoli, a fast and easy-to-use search engine forwhat we call semantic full-text search. Semantic full-textsearch combines the capabilities of standard full-text searchand ontology search. The search operates on four kinds ofobjects: ordinary words (e.g., edible), classes (e.g., plants), instances (e.g.,Broccoli), and relations (e.g., occurs-with or native-to). Queries are trees, where nodes are arbitrary bags of these objects, and arcs are relations. The user interface guides the user in incrementally constructing such trees by instant (search-as-you-type) suggestions of words, classes, instances, or relations that lead to good hits. Both standard full-text search and pure ontology search are included as special cases. In this paper, we describe the query language of Broccoli, a new kind of index that enables fast processing of queries from that language as well as fast query suggestion, the natural language processing required, and the user interface. We evaluated query times and result quality on the full version of the English Wikipedia (32 GB XML dump) combined with the YAGO ontology (26 million facts). We have implemented a fully functional prototype based on our ideas, see: http://broccoli.informatik.uni-freiburg.de.
Theme
Wissensrepräsentation
Object
Broccoli
YAGO
Wikipedia

Similar documents (content)

  1. Jiang, X.; Tan, A.-H.: CRCTOL: a semantic-based domain ontology learning system (2009) 0.21
    0.20975214 = sum of:
      0.20975214 = product of:
        0.65547544 = sum of:
          0.032824602 = weight(abstract_txt:processing in 321) [ClassicSimilarity], result of:
            0.032824602 = score(doc=321,freq=1.0), product of:
              0.12125843 = queryWeight, product of:
                1.2453732 = boost
                4.9499345 = idf(docFreq=822, maxDocs=42740)
                0.01967039 = queryNorm
              0.27069953 = fieldWeight in 321, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9499345 = idf(docFreq=822, maxDocs=42740)
                0.0546875 = fieldNorm(doc=321)
          0.041640572 = weight(abstract_txt:words in 321) [ClassicSimilarity], result of:
            0.041640572 = score(doc=321,freq=1.0), product of:
              0.1420987 = queryWeight, product of:
                1.3481512 = boost
                5.358442 = idf(docFreq=546, maxDocs=42740)
                0.01967039 = queryNorm
              0.2930398 = fieldWeight in 321, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.358442 = idf(docFreq=546, maxDocs=42740)
                0.0546875 = fieldNorm(doc=321)
          0.029944535 = weight(abstract_txt:language in 321) [ClassicSimilarity], result of:
            0.029944535 = score(doc=321,freq=1.0), product of:
              0.13056329 = queryWeight, product of:
                1.5827042 = boost
                4.1938066 = idf(docFreq=1752, maxDocs=42740)
                0.01967039 = queryNorm
              0.22934881 = fieldWeight in 321, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1938066 = idf(docFreq=1752, maxDocs=42740)
                0.0546875 = fieldNorm(doc=321)
          0.06399716 = weight(abstract_txt:semantic in 321) [ClassicSimilarity], result of:
            0.06399716 = score(doc=321,freq=3.0), product of:
              0.15020214 = queryWeight, product of:
                1.6975683 = boost
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.01967039 = queryNorm
              0.42607355 = fieldWeight in 321, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.0546875 = fieldNorm(doc=321)
          0.062283922 = weight(abstract_txt:text in 321) [ClassicSimilarity], result of:
            0.062283922 = score(doc=321,freq=3.0), product of:
              0.16235508 = queryWeight, product of:
                2.0379405 = boost
                4.0500593 = idf(docFreq=2023, maxDocs=42740)
                0.01967039 = queryNorm
              0.3836278 = fieldWeight in 321, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.0500593 = idf(docFreq=2023, maxDocs=42740)
                0.0546875 = fieldNorm(doc=321)
          0.14129126 = weight(abstract_txt:relations in 321) [ClassicSimilarity], result of:
            0.14129126 = score(doc=321,freq=4.0), product of:
              0.2313838 = queryWeight, product of:
                2.106957 = boost
                5.5829573 = idf(docFreq=436, maxDocs=42740)
                0.01967039 = queryNorm
              0.61063594 = fieldWeight in 321, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.5829573 = idf(docFreq=436, maxDocs=42740)
                0.0546875 = fieldNorm(doc=321)
          0.18714099 = weight(abstract_txt:ontology in 321) [ClassicSimilarity], result of:
            0.18714099 = score(doc=321,freq=7.0), product of:
              0.23157375 = queryWeight, product of:
                2.1078217 = boost
                5.5852485 = idf(docFreq=435, maxDocs=42740)
                0.01967039 = queryNorm
              0.8081269 = fieldWeight in 321, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                5.5852485 = idf(docFreq=435, maxDocs=42740)
                0.0546875 = fieldNorm(doc=321)
          0.09635242 = weight(abstract_txt:full in 321) [ClassicSimilarity], result of:
            0.09635242 = score(doc=321,freq=1.0), product of:
              0.35853192 = queryWeight, product of:
                3.7090962 = boost
                4.914131 = idf(docFreq=852, maxDocs=42740)
                0.01967039 = queryNorm
              0.26874155 = fieldWeight in 321, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.914131 = idf(docFreq=852, maxDocs=42740)
                0.0546875 = fieldNorm(doc=321)
        0.32 = coord(8/25)
    
  2. Rajasurya, S.; Muralidharan, T.; Devi, S.; Swamynathan, S.: Semantic information retrieval using ontology in university domain (2012) 0.21
    0.2084695 = sum of:
      0.2084695 = product of:
        0.6514672 = sum of:
          0.03751383 = weight(abstract_txt:processing in 4862) [ClassicSimilarity], result of:
            0.03751383 = score(doc=4862,freq=1.0), product of:
              0.12125843 = queryWeight, product of:
                1.2453732 = boost
                4.9499345 = idf(docFreq=822, maxDocs=42740)
                0.01967039 = queryNorm
              0.3093709 = fieldWeight in 4862, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9499345 = idf(docFreq=822, maxDocs=42740)
                0.0625 = fieldNorm(doc=4862)
          0.0462364 = weight(abstract_txt:user in 4862) [ClassicSimilarity], result of:
            0.0462364 = score(doc=4862,freq=4.0), product of:
              0.100519605 = queryWeight, product of:
                1.3887197 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.01967039 = queryNorm
              0.45997396 = fieldWeight in 4862, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.0625 = fieldNorm(doc=4862)
          0.034222323 = weight(abstract_txt:language in 4862) [ClassicSimilarity], result of:
            0.034222323 = score(doc=4862,freq=1.0), product of:
              0.13056329 = queryWeight, product of:
                1.5827042 = boost
                4.1938066 = idf(docFreq=1752, maxDocs=42740)
                0.01967039 = queryNorm
              0.26211292 = fieldWeight in 4862, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1938066 = idf(docFreq=1752, maxDocs=42740)
                0.0625 = fieldNorm(doc=4862)
          0.073139615 = weight(abstract_txt:semantic in 4862) [ClassicSimilarity], result of:
            0.073139615 = score(doc=4862,freq=3.0), product of:
              0.15020214 = queryWeight, product of:
                1.6975683 = boost
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.01967039 = queryNorm
              0.48694122 = fieldWeight in 4862, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.0625 = fieldNorm(doc=4862)
          0.11002255 = weight(abstract_txt:query in 4862) [ClassicSimilarity], result of:
            0.11002255 = score(doc=4862,freq=5.0), product of:
              0.16632055 = queryWeight, product of:
                1.7863319 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.01967039 = queryNorm
              0.6615091 = fieldWeight in 4862, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.0625 = fieldNorm(doc=4862)
          0.08083731 = weight(abstract_txt:ontology in 4862) [ClassicSimilarity], result of:
            0.08083731 = score(doc=4862,freq=1.0), product of:
              0.23157375 = queryWeight, product of:
                2.1078217 = boost
                5.5852485 = idf(docFreq=435, maxDocs=42740)
                0.01967039 = queryNorm
              0.34907803 = fieldWeight in 4862, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5852485 = idf(docFreq=435, maxDocs=42740)
                0.0625 = fieldNorm(doc=4862)
          0.15937811 = weight(abstract_txt:search in 4862) [ClassicSimilarity], result of:
            0.15937811 = score(doc=4862,freq=7.0), product of:
              0.26395148 = queryWeight, product of:
                3.6748161 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.01967039 = queryNorm
              0.6038159 = fieldWeight in 4862, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.0625 = fieldNorm(doc=4862)
          0.110117055 = weight(abstract_txt:full in 4862) [ClassicSimilarity], result of:
            0.110117055 = score(doc=4862,freq=1.0), product of:
              0.35853192 = queryWeight, product of:
                3.7090962 = boost
                4.914131 = idf(docFreq=852, maxDocs=42740)
                0.01967039 = queryNorm
              0.3071332 = fieldWeight in 4862, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.914131 = idf(docFreq=852, maxDocs=42740)
                0.0625 = fieldNorm(doc=4862)
        0.32 = coord(8/25)
    
  3. Zhitomirsky-Geffet, M.; Bar-Ilan, J.: Towards maximal unification of semantically diverse ontologies for controversial domains (2014) 0.20
    0.20001218 = sum of:
      0.20001218 = product of:
        0.7143292 = sum of:
          0.06543862 = weight(abstract_txt:classes in 3635) [ClassicSimilarity], result of:
            0.06543862 = score(doc=3635,freq=2.0), product of:
              0.16894925 = queryWeight, product of:
                1.4700148 = boost
                5.842808 = idf(docFreq=336, maxDocs=42740)
                0.01967039 = queryNorm
              0.38732708 = fieldWeight in 3635, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.842808 = idf(docFreq=336, maxDocs=42740)
                0.046875 = fieldNorm(doc=3635)
          0.08379196 = weight(abstract_txt:semantic in 3635) [ClassicSimilarity], result of:
            0.08379196 = score(doc=3635,freq=7.0), product of:
              0.15020214 = queryWeight, product of:
                1.6975683 = boost
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.01967039 = queryNorm
              0.55786127 = fieldWeight in 3635, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.046875 = fieldNorm(doc=3635)
          0.08447924 = weight(abstract_txt:instances in 3635) [ClassicSimilarity], result of:
            0.08447924 = score(doc=3635,freq=1.0), product of:
              0.25237337 = queryWeight, product of:
                1.7966577 = boost
                7.141102 = idf(docFreq=91, maxDocs=42740)
                0.01967039 = queryNorm
              0.33473915 = fieldWeight in 3635, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.141102 = idf(docFreq=91, maxDocs=42740)
                0.046875 = fieldNorm(doc=3635)
          0.17127088 = weight(abstract_txt:relations in 3635) [ClassicSimilarity], result of:
            0.17127088 = score(doc=3635,freq=8.0), product of:
              0.2313838 = queryWeight, product of:
                2.106957 = boost
                5.5829573 = idf(docFreq=436, maxDocs=42740)
                0.01967039 = queryNorm
              0.74020255 = fieldWeight in 3635, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                5.5829573 = idf(docFreq=436, maxDocs=42740)
                0.046875 = fieldNorm(doc=3635)
          0.14850762 = weight(abstract_txt:ontology in 3635) [ClassicSimilarity], result of:
            0.14850762 = score(doc=3635,freq=6.0), product of:
              0.23157375 = queryWeight, product of:
                2.1078217 = boost
                5.5852485 = idf(docFreq=435, maxDocs=42740)
                0.01967039 = queryNorm
              0.64129734 = fieldWeight in 3635, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                5.5852485 = idf(docFreq=435, maxDocs=42740)
                0.046875 = fieldNorm(doc=3635)
          0.07825309 = weight(abstract_txt:search in 3635) [ClassicSimilarity], result of:
            0.07825309 = score(doc=3635,freq=3.0), product of:
              0.26395148 = queryWeight, product of:
                3.6748161 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.01967039 = queryNorm
              0.29646772 = fieldWeight in 3635, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.046875 = fieldNorm(doc=3635)
          0.08258779 = weight(abstract_txt:full in 3635) [ClassicSimilarity], result of:
            0.08258779 = score(doc=3635,freq=1.0), product of:
              0.35853192 = queryWeight, product of:
                3.7090962 = boost
                4.914131 = idf(docFreq=852, maxDocs=42740)
                0.01967039 = queryNorm
              0.2303499 = fieldWeight in 3635, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.914131 = idf(docFreq=852, maxDocs=42740)
                0.046875 = fieldNorm(doc=3635)
        0.28 = coord(7/25)
    
  4. Hildebrand, M.; Ossenbruggen, J. van; Hardman, L.: ¬An analysis of search-based user interaction on the Semantic Web (2007) 0.18
    0.18480846 = sum of:
      0.18480846 = product of:
        0.66003025 = sum of:
          0.05276935 = weight(abstract_txt:interface in 2060) [ClassicSimilarity], result of:
            0.05276935 = score(doc=2060,freq=1.0), product of:
              0.116174646 = queryWeight, product of:
                1.2189875 = boost
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.01967039 = queryNorm
              0.45422435 = fieldWeight in 2060, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.84506 = idf(docFreq=913, maxDocs=42740)
                0.09375 = fieldNorm(doc=2060)
          0.06115551 = weight(abstract_txt:queries in 2060) [ClassicSimilarity], result of:
            0.06115551 = score(doc=2060,freq=1.0), product of:
              0.12817812 = queryWeight, product of:
                1.2804143 = boost
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.01967039 = queryNorm
              0.4771135 = fieldWeight in 2060, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.09375 = fieldNorm(doc=2060)
          0.049041107 = weight(abstract_txt:user in 2060) [ClassicSimilarity], result of:
            0.049041107 = score(doc=2060,freq=2.0), product of:
              0.100519605 = queryWeight, product of:
                1.3887197 = boost
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.01967039 = queryNorm
              0.48787606 = fieldWeight in 2060, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6797917 = idf(docFreq=2930, maxDocs=42740)
                0.09375 = fieldNorm(doc=2060)
          0.10970942 = weight(abstract_txt:semantic in 2060) [ClassicSimilarity], result of:
            0.10970942 = score(doc=2060,freq=3.0), product of:
              0.15020214 = queryWeight, product of:
                1.6975683 = boost
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.01967039 = queryNorm
              0.7304118 = fieldWeight in 2060, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.09375 = fieldNorm(doc=2060)
          0.10437656 = weight(abstract_txt:query in 2060) [ClassicSimilarity], result of:
            0.10437656 = score(doc=2060,freq=2.0), product of:
              0.16632055 = queryWeight, product of:
                1.7863319 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.01967039 = queryNorm
              0.62756264 = fieldWeight in 2060, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.09375 = fieldNorm(doc=2060)
          0.061645098 = weight(abstract_txt:text in 2060) [ClassicSimilarity], result of:
            0.061645098 = score(doc=2060,freq=1.0), product of:
              0.16235508 = queryWeight, product of:
                2.0379405 = boost
                4.0500593 = idf(docFreq=2023, maxDocs=42740)
                0.01967039 = queryNorm
              0.37969306 = fieldWeight in 2060, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0500593 = idf(docFreq=2023, maxDocs=42740)
                0.09375 = fieldNorm(doc=2060)
          0.22133319 = weight(abstract_txt:search in 2060) [ClassicSimilarity], result of:
            0.22133319 = score(doc=2060,freq=6.0), product of:
              0.26395148 = queryWeight, product of:
                3.6748161 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.01967039 = queryNorm
              0.8385374 = fieldWeight in 2060, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.09375 = fieldNorm(doc=2060)
        0.28 = coord(7/25)
    
  5. Li, Z.: ¬A domain specific search engine with explicit document relations (2013) 0.18
    0.18465073 = sum of:
      0.18465073 = product of:
        0.5770336 = sum of:
          0.032560304 = weight(abstract_txt:standard in 3211) [ClassicSimilarity], result of:
            0.032560304 = score(doc=3211,freq=1.0), product of:
              0.11033416 = queryWeight, product of:
                1.1879511 = boost
                4.7217007 = idf(docFreq=1033, maxDocs=42740)
                0.01967039 = queryNorm
              0.2951063 = fieldWeight in 3211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7217007 = idf(docFreq=1033, maxDocs=42740)
                0.0625 = fieldNorm(doc=3211)
          0.03751383 = weight(abstract_txt:processing in 3211) [ClassicSimilarity], result of:
            0.03751383 = score(doc=3211,freq=1.0), product of:
              0.12125843 = queryWeight, product of:
                1.2453732 = boost
                4.9499345 = idf(docFreq=822, maxDocs=42740)
                0.01967039 = queryNorm
              0.3093709 = fieldWeight in 3211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9499345 = idf(docFreq=822, maxDocs=42740)
                0.0625 = fieldNorm(doc=3211)
          0.034222323 = weight(abstract_txt:language in 3211) [ClassicSimilarity], result of:
            0.034222323 = score(doc=3211,freq=1.0), product of:
              0.13056329 = queryWeight, product of:
                1.5827042 = boost
                4.1938066 = idf(docFreq=1752, maxDocs=42740)
                0.01967039 = queryNorm
              0.26211292 = fieldWeight in 3211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1938066 = idf(docFreq=1752, maxDocs=42740)
                0.0625 = fieldNorm(doc=3211)
          0.073139615 = weight(abstract_txt:semantic in 3211) [ClassicSimilarity], result of:
            0.073139615 = score(doc=3211,freq=3.0), product of:
              0.15020214 = queryWeight, product of:
                1.6975683 = boost
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.01967039 = queryNorm
              0.48694122 = fieldWeight in 3211, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.4981704 = idf(docFreq=1292, maxDocs=42740)
                0.0625 = fieldNorm(doc=3211)
          0.041096732 = weight(abstract_txt:text in 3211) [ClassicSimilarity], result of:
            0.041096732 = score(doc=3211,freq=1.0), product of:
              0.16235508 = queryWeight, product of:
                2.0379405 = boost
                4.0500593 = idf(docFreq=2023, maxDocs=42740)
                0.01967039 = queryNorm
              0.2531287 = fieldWeight in 3211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0500593 = idf(docFreq=2023, maxDocs=42740)
                0.0625 = fieldNorm(doc=3211)
          0.1398421 = weight(abstract_txt:relations in 3211) [ClassicSimilarity], result of:
            0.1398421 = score(doc=3211,freq=3.0), product of:
              0.2313838 = queryWeight, product of:
                2.106957 = boost
                5.5829573 = idf(docFreq=436, maxDocs=42740)
                0.01967039 = queryNorm
              0.60437286 = fieldWeight in 3211, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.5829573 = idf(docFreq=436, maxDocs=42740)
                0.0625 = fieldNorm(doc=3211)
          0.11432122 = weight(abstract_txt:ontology in 3211) [ClassicSimilarity], result of:
            0.11432122 = score(doc=3211,freq=2.0), product of:
              0.23157375 = queryWeight, product of:
                2.1078217 = boost
                5.5852485 = idf(docFreq=435, maxDocs=42740)
                0.01967039 = queryNorm
              0.49367088 = fieldWeight in 3211, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5852485 = idf(docFreq=435, maxDocs=42740)
                0.0625 = fieldNorm(doc=3211)
          0.10433746 = weight(abstract_txt:search in 3211) [ClassicSimilarity], result of:
            0.10433746 = score(doc=3211,freq=3.0), product of:
              0.26395148 = queryWeight, product of:
                3.6748161 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.01967039 = queryNorm
              0.39529032 = fieldWeight in 3211, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.0625 = fieldNorm(doc=3211)
        0.32 = coord(8/25)