Document (#38058)

Author
Barthel, S.
Tönnies, S.
Balke, W.-T.
Title
Large-scale experiments for mathematical document classification
Source
15th International Conference on Asia-Pacific Digital Libraries ICADL 2013. Bangalore, India. [to appear, 2013]
Imprint
Berlin : Springer
Year
2013
Pages
S.xxx-xxx
Abstract
The ever increasing amount of digitally available information is curse and blessing at the same time. On the one hand, users have increasingly large amounts of information at their fingertips. On the other hand, the assessment and refinement of web search results becomes more and more tiresome and difficult for non-experts in a domain. Therefore, established digital libraries offer specialized collections with a certain degree of quality. This quality can largely be attributed to the great effort invested into semantic enrichment of the provided documents e.g. by annotating their documents with respect to a domain-specific taxonomy. This process is still done manually in many domains, e.g. chemistry CAS, medicine MeSH, or mathematics MSC. But due to the growing amount of data, this manual task gets more and more time consuming and expensive. The only solution for this problem seems to employ automated classification algorithms, but from evaluations done in previous research, conclusions to a real world scenario are difficult to make. We therefore conducted a large scale feasibility study on a real world data set from one of the biggest mathematical digital libraries, i.e. Zentralblatt MATH, with special focus on its practical applicability.
Content
Vgl.: http://www.ifis.cs.tu-bs.de/node/2838.
Theme
Automatisches Klassifizieren
Field
Mathematik
Object
Zentralblatt für Mathematik
MSC
DeliverMATH

Similar documents (content)

  1. Pu, H.-T.; Chuang, S.-L.; Yang, C.: Subject categorization of query terms for exploring Web users' search interests (2002) 0.17
    0.16799888 = sum of:
      0.16799888 = product of:
        0.46666354 = sum of:
          0.038807385 = weight(abstract_txt:documents in 1588) [ClassicSimilarity], result of:
            0.038807385 = score(doc=1588,freq=2.0), product of:
              0.10673272 = queryWeight, product of:
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.025946321 = queryNorm
              0.36359408 = fieldWeight in 1588, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
          0.049336273 = weight(abstract_txt:time in 1588) [ClassicSimilarity], result of:
            0.049336273 = score(doc=1588,freq=3.0), product of:
              0.109421276 = queryWeight, product of:
                1.0125165 = boost
                4.1650853 = idf(docFreq=1797, maxDocs=42596)
                0.025946321 = queryNorm
              0.45088372 = fieldWeight in 1588, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.1650853 = idf(docFreq=1797, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
          0.034485064 = weight(abstract_txt:world in 1588) [ClassicSimilarity], result of:
            0.034485064 = score(doc=1588,freq=1.0), product of:
              0.124294534 = queryWeight, product of:
                1.0791386 = boost
                4.4391418 = idf(docFreq=1366, maxDocs=42596)
                0.025946321 = queryNorm
              0.27744636 = fieldWeight in 1588, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4391418 = idf(docFreq=1366, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
          0.01151526 = weight(abstract_txt:this in 1588) [ClassicSimilarity], result of:
            0.01151526 = score(doc=1588,freq=1.0), product of:
              0.07537439 = queryWeight, product of:
                1.1884423 = boost
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.025946321 = queryNorm
              0.15277417 = fieldWeight in 1588, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
          0.084662385 = weight(abstract_txt:real in 1588) [ClassicSimilarity], result of:
            0.084662385 = score(doc=1588,freq=2.0), product of:
              0.17953467 = queryWeight, product of:
                1.2969564 = boost
                5.3351564 = idf(docFreq=557, maxDocs=42596)
                0.025946321 = queryNorm
              0.47156566 = fieldWeight in 1588, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.3351564 = idf(docFreq=557, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
          0.06391843 = weight(abstract_txt:therefore in 1588) [ClassicSimilarity], result of:
            0.06391843 = score(doc=1588,freq=1.0), product of:
              0.18754926 = queryWeight, product of:
                1.3255891 = boost
                5.4529395 = idf(docFreq=495, maxDocs=42596)
                0.025946321 = queryNorm
              0.34080872 = fieldWeight in 1588, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4529395 = idf(docFreq=495, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
          0.06500441 = weight(abstract_txt:difficult in 1588) [ClassicSimilarity], result of:
            0.06500441 = score(doc=1588,freq=1.0), product of:
              0.18966761 = queryWeight, product of:
                1.3330542 = boost
                5.4836483 = idf(docFreq=480, maxDocs=42596)
                0.025946321 = queryNorm
              0.34272802 = fieldWeight in 1588, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4836483 = idf(docFreq=480, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
          0.06621492 = weight(abstract_txt:scale in 1588) [ClassicSimilarity], result of:
            0.06621492 = score(doc=1588,freq=1.0), product of:
              0.19201502 = queryWeight, product of:
                1.3412781 = boost
                5.517478 = idf(docFreq=464, maxDocs=42596)
                0.025946321 = queryNorm
              0.34484237 = fieldWeight in 1588, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.517478 = idf(docFreq=464, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
          0.052719403 = weight(abstract_txt:large in 1588) [ClassicSimilarity], result of:
            0.052719403 = score(doc=1588,freq=1.0), product of:
              0.18881743 = queryWeight, product of:
                1.628988 = boost
                4.467334 = idf(docFreq=1328, maxDocs=42596)
                0.025946321 = queryNorm
              0.27920836 = fieldWeight in 1588, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.467334 = idf(docFreq=1328, maxDocs=42596)
                0.0625 = fieldNorm(doc=1588)
        0.36 = coord(9/25)
    
  2. Wang, S.; Koopman, R.: Embed first, then predict (2019) 0.15
    0.14637488 = sum of:
      0.14637488 = product of:
        0.5227674 = sum of:
          0.034301206 = weight(abstract_txt:documents in 998) [ClassicSimilarity], result of:
            0.034301206 = score(doc=998,freq=1.0), product of:
              0.10673272 = queryWeight, product of:
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.025946321 = queryNorm
              0.3213748 = fieldWeight in 998, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.078125 = fieldNorm(doc=998)
          0.16022739 = weight(abstract_txt:gets in 998) [ClassicSimilarity], result of:
            0.16022739 = score(doc=998,freq=1.0), product of:
              0.23672229 = queryWeight, product of:
                1.0530665 = boost
                8.663783 = idf(docFreq=19, maxDocs=42596)
                0.025946321 = queryNorm
              0.67685807 = fieldWeight in 998, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.663783 = idf(docFreq=19, maxDocs=42596)
                0.078125 = fieldNorm(doc=998)
          0.05884327 = weight(abstract_txt:digital in 998) [ClassicSimilarity], result of:
            0.05884327 = score(doc=998,freq=2.0), product of:
              0.12139828 = queryWeight, product of:
                1.0664917 = boost
                4.3871174 = idf(docFreq=1439, maxDocs=42596)
                0.025946321 = queryNorm
              0.48471257 = fieldWeight in 998, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.3871174 = idf(docFreq=1439, maxDocs=42596)
                0.078125 = fieldNorm(doc=998)
          0.03218613 = weight(abstract_txt:this in 998) [ClassicSimilarity], result of:
            0.03218613 = score(doc=998,freq=5.0), product of:
              0.07537439 = queryWeight, product of:
                1.1884423 = boost
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.025946321 = queryNorm
              0.4270168 = fieldWeight in 998, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.078125 = fieldNorm(doc=998)
          0.0812555 = weight(abstract_txt:difficult in 998) [ClassicSimilarity], result of:
            0.0812555 = score(doc=998,freq=1.0), product of:
              0.18966761 = queryWeight, product of:
                1.3330542 = boost
                5.4836483 = idf(docFreq=480, maxDocs=42596)
                0.025946321 = queryNorm
              0.42841002 = fieldWeight in 998, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4836483 = idf(docFreq=480, maxDocs=42596)
                0.078125 = fieldNorm(doc=998)
          0.099802025 = weight(abstract_txt:amount in 998) [ClassicSimilarity], result of:
            0.099802025 = score(doc=998,freq=1.0), product of:
              0.2175292 = queryWeight, product of:
                1.4276114 = boost
                5.872618 = idf(docFreq=325, maxDocs=42596)
                0.025946321 = queryNorm
              0.4587983 = fieldWeight in 998, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.872618 = idf(docFreq=325, maxDocs=42596)
                0.078125 = fieldNorm(doc=998)
          0.056151915 = weight(abstract_txt:more in 998) [ClassicSimilarity], result of:
            0.056151915 = score(doc=998,freq=2.0), product of:
              0.14825216 = queryWeight, product of:
                1.6667356 = boost
                3.4281397 = idf(docFreq=3756, maxDocs=42596)
                0.025946321 = queryNorm
              0.3787595 = fieldWeight in 998, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4281397 = idf(docFreq=3756, maxDocs=42596)
                0.078125 = fieldNorm(doc=998)
        0.28 = coord(7/25)
    
  3. Liu, Z.: Reading behavior in the digital environment : changes in reading behavior over the past ten years (2005) 0.15
    0.145885 = sum of:
      0.145885 = product of:
        0.52101785 = sum of:
          0.04850923 = weight(abstract_txt:documents in 5702) [ClassicSimilarity], result of:
            0.04850923 = score(doc=5702,freq=2.0), product of:
              0.10673272 = queryWeight, product of:
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.025946321 = queryNorm
              0.4544926 = fieldWeight in 5702, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.078125 = fieldNorm(doc=5702)
          0.07121077 = weight(abstract_txt:time in 5702) [ClassicSimilarity], result of:
            0.07121077 = score(doc=5702,freq=4.0), product of:
              0.109421276 = queryWeight, product of:
                1.0125165 = boost
                4.1650853 = idf(docFreq=1797, maxDocs=42596)
                0.025946321 = queryNorm
              0.65079457 = fieldWeight in 5702, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.1650853 = idf(docFreq=1797, maxDocs=42596)
                0.078125 = fieldNorm(doc=5702)
          0.16614437 = weight(abstract_txt:annotating in 5702) [ClassicSimilarity], result of:
            0.16614437 = score(doc=5702,freq=1.0), product of:
              0.2425149 = queryWeight, product of:
                1.0658729 = boost
                8.769144 = idf(docFreq=17, maxDocs=42596)
                0.025946321 = queryNorm
              0.68508935 = fieldWeight in 5702, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.769144 = idf(docFreq=17, maxDocs=42596)
                0.078125 = fieldNorm(doc=5702)
          0.05884327 = weight(abstract_txt:digital in 5702) [ClassicSimilarity], result of:
            0.05884327 = score(doc=5702,freq=2.0), product of:
              0.12139828 = queryWeight, product of:
                1.0664917 = boost
                4.3871174 = idf(docFreq=1439, maxDocs=42596)
                0.025946321 = queryNorm
              0.48471257 = fieldWeight in 5702, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.3871174 = idf(docFreq=1439, maxDocs=42596)
                0.078125 = fieldNorm(doc=5702)
          0.020356294 = weight(abstract_txt:this in 5702) [ClassicSimilarity], result of:
            0.020356294 = score(doc=5702,freq=2.0), product of:
              0.07537439 = queryWeight, product of:
                1.1884423 = boost
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.025946321 = queryNorm
              0.27006912 = fieldWeight in 5702, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.078125 = fieldNorm(doc=5702)
          0.099802025 = weight(abstract_txt:amount in 5702) [ClassicSimilarity], result of:
            0.099802025 = score(doc=5702,freq=1.0), product of:
              0.2175292 = queryWeight, product of:
                1.4276114 = boost
                5.872618 = idf(docFreq=325, maxDocs=42596)
                0.025946321 = queryNorm
              0.4587983 = fieldWeight in 5702, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.872618 = idf(docFreq=325, maxDocs=42596)
                0.078125 = fieldNorm(doc=5702)
          0.056151915 = weight(abstract_txt:more in 5702) [ClassicSimilarity], result of:
            0.056151915 = score(doc=5702,freq=2.0), product of:
              0.14825216 = queryWeight, product of:
                1.6667356 = boost
                3.4281397 = idf(docFreq=3756, maxDocs=42596)
                0.025946321 = queryNorm
              0.3787595 = fieldWeight in 5702, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4281397 = idf(docFreq=3756, maxDocs=42596)
                0.078125 = fieldNorm(doc=5702)
        0.28 = coord(7/25)
    
  4. Zhang, J.; Mostafa, J.; Tripathy, H.: Information retrieval by semantic analysis and visualization of the concept space of D-Lib® magazine (2002) 0.15
    0.14566138 = sum of:
      0.14566138 = product of:
        0.3310486 = sum of:
          0.027440965 = weight(abstract_txt:documents in 2391) [ClassicSimilarity], result of:
            0.027440965 = score(doc=2391,freq=4.0), product of:
              0.10673272 = queryWeight, product of:
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.025946321 = queryNorm
              0.25709984 = fieldWeight in 2391, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.020141447 = weight(abstract_txt:time in 2391) [ClassicSimilarity], result of:
            0.020141447 = score(doc=2391,freq=2.0), product of:
              0.109421276 = queryWeight, product of:
                1.0125165 = boost
                4.1650853 = idf(docFreq=1797, maxDocs=42596)
                0.025946321 = queryNorm
              0.1840725 = fieldWeight in 2391, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1650853 = idf(docFreq=1797, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.03328678 = weight(abstract_txt:digital in 2391) [ClassicSimilarity], result of:
            0.03328678 = score(doc=2391,freq=4.0), product of:
              0.12139828 = queryWeight, product of:
                1.0664917 = boost
                4.3871174 = idf(docFreq=1439, maxDocs=42596)
                0.025946321 = queryNorm
              0.27419484 = fieldWeight in 2391, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.3871174 = idf(docFreq=1439, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.017242532 = weight(abstract_txt:world in 2391) [ClassicSimilarity], result of:
            0.017242532 = score(doc=2391,freq=1.0), product of:
              0.124294534 = queryWeight, product of:
                1.0791386 = boost
                4.4391418 = idf(docFreq=1366, maxDocs=42596)
                0.025946321 = queryNorm
              0.13872318 = fieldWeight in 2391, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4391418 = idf(docFreq=1366, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.020257363 = weight(abstract_txt:quality in 2391) [ClassicSimilarity], result of:
            0.020257363 = score(doc=2391,freq=1.0), product of:
              0.1383906 = queryWeight, product of:
                1.1386874 = boost
                4.6841016 = idf(docFreq=1069, maxDocs=42596)
                0.025946321 = queryNorm
              0.14637817 = fieldWeight in 2391, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6841016 = idf(docFreq=1069, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.015233257 = weight(abstract_txt:this in 2391) [ClassicSimilarity], result of:
            0.015233257 = score(doc=2391,freq=7.0), product of:
              0.07537439 = queryWeight, product of:
                1.1884423 = boost
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.025946321 = queryNorm
              0.20210123 = fieldWeight in 2391, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.045965057 = weight(abstract_txt:difficult in 2391) [ClassicSimilarity], result of:
            0.045965057 = score(doc=2391,freq=2.0), product of:
              0.18966761 = queryWeight, product of:
                1.3330542 = boost
                5.4836483 = idf(docFreq=480, maxDocs=42596)
                0.025946321 = queryNorm
              0.2423453 = fieldWeight in 2391, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.4836483 = idf(docFreq=480, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.03895165 = weight(abstract_txt:done in 2391) [ClassicSimilarity], result of:
            0.03895165 = score(doc=2391,freq=1.0), product of:
              0.21399415 = queryWeight, product of:
                1.4159639 = boost
                5.824705 = idf(docFreq=341, maxDocs=42596)
                0.025946321 = queryNorm
              0.18202204 = fieldWeight in 2391, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.824705 = idf(docFreq=341, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.03992081 = weight(abstract_txt:amount in 2391) [ClassicSimilarity], result of:
            0.03992081 = score(doc=2391,freq=1.0), product of:
              0.2175292 = queryWeight, product of:
                1.4276114 = boost
                5.872618 = idf(docFreq=325, maxDocs=42596)
                0.025946321 = queryNorm
              0.18351932 = fieldWeight in 2391, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.872618 = idf(docFreq=325, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.050147995 = weight(abstract_txt:mathematical in 2391) [ClassicSimilarity], result of:
            0.050147995 = score(doc=2391,freq=1.0), product of:
              0.25325248 = queryWeight, product of:
                1.5403807 = boost
                6.336506 = idf(docFreq=204, maxDocs=42596)
                0.025946321 = queryNorm
              0.19801581 = fieldWeight in 2391, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.336506 = idf(docFreq=204, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
          0.022460766 = weight(abstract_txt:more in 2391) [ClassicSimilarity], result of:
            0.022460766 = score(doc=2391,freq=2.0), product of:
              0.14825216 = queryWeight, product of:
                1.6667356 = boost
                3.4281397 = idf(docFreq=3756, maxDocs=42596)
                0.025946321 = queryNorm
              0.1515038 = fieldWeight in 2391, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4281397 = idf(docFreq=3756, maxDocs=42596)
                0.03125 = fieldNorm(doc=2391)
        0.44 = coord(11/25)
    
  5. Ziemba, L.: Information retrieval with concept discovery in digital collections for agriculture and natural resources (2011) 0.14
    0.14109696 = sum of:
      0.14109696 = product of:
        0.391936 = sum of:
          0.020580722 = weight(abstract_txt:documents in 729) [ClassicSimilarity], result of:
            0.020580722 = score(doc=729,freq=1.0), product of:
              0.10673272 = queryWeight, product of:
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.025946321 = queryNorm
              0.19282487 = fieldWeight in 729, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
          0.061151724 = weight(abstract_txt:digital in 729) [ClassicSimilarity], result of:
            0.061151724 = score(doc=729,freq=6.0), product of:
              0.12139828 = queryWeight, product of:
                1.0664917 = boost
                4.3871174 = idf(docFreq=1439, maxDocs=42596)
                0.025946321 = queryNorm
              0.5037281 = fieldWeight in 729, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.3871174 = idf(docFreq=1439, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
          0.025863798 = weight(abstract_txt:world in 729) [ClassicSimilarity], result of:
            0.025863798 = score(doc=729,freq=1.0), product of:
              0.124294534 = queryWeight, product of:
                1.0791386 = boost
                4.4391418 = idf(docFreq=1366, maxDocs=42596)
                0.025946321 = queryNorm
              0.20808476 = fieldWeight in 729, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4391418 = idf(docFreq=1366, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
          0.0790529 = weight(abstract_txt:domain in 729) [ClassicSimilarity], result of:
            0.0790529 = score(doc=729,freq=6.0), product of:
              0.14406283 = queryWeight, product of:
                1.1617888 = boost
                4.7791314 = idf(docFreq=972, maxDocs=42596)
                0.025946321 = queryNorm
              0.5487391 = fieldWeight in 729, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.7791314 = idf(docFreq=972, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
          0.012213778 = weight(abstract_txt:this in 729) [ClassicSimilarity], result of:
            0.012213778 = score(doc=729,freq=2.0), product of:
              0.07537439 = queryWeight, product of:
                1.1884423 = boost
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.025946321 = queryNorm
              0.16204149 = fieldWeight in 729, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4443867 = idf(docFreq=10047, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
          0.044899013 = weight(abstract_txt:real in 729) [ClassicSimilarity], result of:
            0.044899013 = score(doc=729,freq=1.0), product of:
              0.17953467 = queryWeight, product of:
                1.2969564 = boost
                5.3351564 = idf(docFreq=557, maxDocs=42596)
                0.025946321 = queryNorm
              0.25008547 = fieldWeight in 729, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3351564 = idf(docFreq=557, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
          0.048753303 = weight(abstract_txt:difficult in 729) [ClassicSimilarity], result of:
            0.048753303 = score(doc=729,freq=1.0), product of:
              0.18966761 = queryWeight, product of:
                1.3330542 = boost
                5.4836483 = idf(docFreq=480, maxDocs=42596)
                0.025946321 = queryNorm
              0.257046 = fieldWeight in 729, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4836483 = idf(docFreq=480, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
          0.059881214 = weight(abstract_txt:amount in 729) [ClassicSimilarity], result of:
            0.059881214 = score(doc=729,freq=1.0), product of:
              0.2175292 = queryWeight, product of:
                1.4276114 = boost
                5.872618 = idf(docFreq=325, maxDocs=42596)
                0.025946321 = queryNorm
              0.275279 = fieldWeight in 729, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.872618 = idf(docFreq=325, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
          0.039539553 = weight(abstract_txt:large in 729) [ClassicSimilarity], result of:
            0.039539553 = score(doc=729,freq=1.0), product of:
              0.18881743 = queryWeight, product of:
                1.628988 = boost
                4.467334 = idf(docFreq=1328, maxDocs=42596)
                0.025946321 = queryNorm
              0.20940627 = fieldWeight in 729, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.467334 = idf(docFreq=1328, maxDocs=42596)
                0.046875 = fieldNorm(doc=729)
        0.36 = coord(9/25)