Document (#29396)

Author
Kettunen, K.
Kunttu, T.
Järvelin, K.
Title
To stem or lemmatize a highly inflectional language in a probabilistic IR environment?
Source
Journal of documentation. 61(2005) no.4, S.476-496
Year
2005
Abstract
Purpose - To show that stem generation compares well with lemmatization as a morphological tool for a highly inflectional language for IR purposes in a best-match retrieval system. Design/methodology/approach - Effects of three different morphological methods - lemmatization, stemming and stem production - for Finnish are compared in a probabilistic IR environment (INQUERY). Evaluation is done using a four-point relevance scale which is partitioned differently in different test settings. Findings - Results show that stem production, a lighter method than morphological lemmatization, compares well with lemmatization in a best-match IR environment. Differences in performance between stem production and lemmatization are small and they are not statistically significant in most of the tested settings. It is also shown that hitherto a rather neglected method of morphological processing for Finnish, stemming, performs reasonably well although the stemmer used - a Porter stemmer implementation - is far from optimal for a morphologically complex language like Finnish. In another series of tests, the effects of compound splitting and derivational expansion of queries are tested. Practical implications - Usefulness of morphological lemmatization and stem generation for IR purposes can be estimated with many factors. On the average P-R level they seem to behave very close to each other in a probabilistic IR system. Thus, the choice of the used method with highly inflectional languages needs to be estimated along other dimensions too. Originality/value - Results are achieved using Finnish as an example of a highly inflectional language. The results are of interest for anyone who is interested in processing of morphological variation of a highly inflected language for IR purposes.
Footnote
Vgl. auch unter: http://www.emeraldinsight.com/10.1108/00220410510607480
Theme
Computerlinguistik

Similar documents (author)

  1. Järvelin, K.: ¬An analysis of two approaches in information retrieval : from frameworks to study designs (2007) 4.99 
    4.9924345 = sum of:
  4.9924345 = weight(author_txt:järvelin in 1326) [ClassicSimilarity], result of:
    4.9924345 = fieldWeight in 1326, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.9878955 = idf(docFreq=40, maxDocs=44421)
      0.625 = fieldNorm(doc=1326)
  2. Järvelin, K.: Evaluation (2011) 4.99 
    4.9924345 = sum of:
  4.9924345 = weight(author_txt:järvelin in 1548) [ClassicSimilarity], result of:
    4.9924345 = fieldWeight in 1548, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.9878955 = idf(docFreq=40, maxDocs=44421)
      0.625 = fieldNorm(doc=1548)
  3. Järvelin, K.; Vakkari, P.: ¬The evolution of library and information science 1965-1985 : a content analysis of journal titles (1993) 3.99 
    3.9939477 = sum of:
  3.9939477 = weight(author_txt:järvelin in 4648) [ClassicSimilarity], result of:
    3.9939477 = fieldWeight in 4648, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.9878955 = idf(docFreq=40, maxDocs=44421)
      0.5 = fieldNorm(doc=4648)
  4. Kristensen, J.; Järvelin, K.: ¬The effectiveness of a searching thesaurus in free-text searching in a full-text database (1990) 3.99 
    3.9939477 = sum of:
  3.9939477 = weight(author_txt:järvelin in 2111) [ClassicSimilarity], result of:
    3.9939477 = fieldWeight in 2111, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.9878955 = idf(docFreq=40, maxDocs=44421)
      0.5 = fieldNorm(doc=2111)
  5. Pirkola, A.; Järvelin, K.: Employing the resolution power of search keys (2001) 3.99 
    3.9939477 = sum of:
  3.9939477 = weight(author_txt:järvelin in 6907) [ClassicSimilarity], result of:
    3.9939477 = fieldWeight in 6907, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      7.9878955 = idf(docFreq=40, maxDocs=44421)
      0.5 = fieldNorm(doc=6907)

Similar documents (content)

  1. Airio, E.; Kettunen, K.: Does dictionary based bilingual retrieval work in a non-normalized index? (2009) 0.35 
    0.35497865 = sum of:
  0.35497865 = product of:
    0.8874466 = sum of:
      0.008437408 = weight(abstract_txt:results in 224) [ClassicSimilarity], result of:
        0.008437408 = score(doc=224,freq=1.0), product of:
          0.038807783 = queryWeight, product of:
            1.0594945 = boost
            3.4786456 = idf(docFreq=3724, maxDocs=44421)
            0.0105295535 = queryNorm
          0.21741535 = fieldWeight in 224, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4786456 = idf(docFreq=3724, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.02362318 = weight(abstract_txt:generation in 224) [ClassicSimilarity], result of:
        0.02362318 = score(doc=224,freq=1.0), product of:
          0.0673454 = queryWeight, product of:
            1.1395874 = boost
            5.612423 = idf(docFreq=440, maxDocs=44421)
            0.0105295535 = queryNorm
          0.35077643 = fieldWeight in 224, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.612423 = idf(docFreq=440, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.02654665 = weight(abstract_txt:tested in 224) [ClassicSimilarity], result of:
        0.02654665 = score(doc=224,freq=1.0), product of:
          0.07279287 = queryWeight, product of:
            1.184781 = boost
            5.8349996 = idf(docFreq=352, maxDocs=44421)
            0.0105295535 = queryNorm
          0.36468747 = fieldWeight in 224, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.8349996 = idf(docFreq=352, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.011912932 = weight(abstract_txt:well in 224) [ClassicSimilarity], result of:
        0.011912932 = score(doc=224,freq=1.0), product of:
          0.048841827 = queryWeight, product of:
            1.1885986 = boost
            3.9025342 = idf(docFreq=2437, maxDocs=44421)
            0.0105295535 = queryNorm
          0.24390839 = fieldWeight in 224, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.9025342 = idf(docFreq=2437, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.018250316 = weight(abstract_txt:method in 224) [ClassicSimilarity], result of:
        0.018250316 = score(doc=224,freq=1.0), product of:
          0.06490723 = queryWeight, product of:
            1.3702059 = boost
            4.4988065 = idf(docFreq=1342, maxDocs=44421)
            0.0105295535 = queryNorm
          0.2811754 = fieldWeight in 224, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.4988065 = idf(docFreq=1342, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.055319186 = weight(abstract_txt:stemming in 224) [ClassicSimilarity], result of:
        0.055319186 = score(doc=224,freq=1.0), product of:
          0.118758924 = queryWeight, product of:
            1.513306 = boost
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.0105295535 = queryNorm
          0.46581078 = fieldWeight in 224, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.048481263 = weight(abstract_txt:language in 224) [ClassicSimilarity], result of:
        0.048481263 = score(doc=224,freq=4.0), product of:
          0.0929876 = queryWeight, product of:
            2.1172695 = boost
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.0105295535 = queryNorm
          0.52137345 = fieldWeight in 224, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.054064523 = weight(abstract_txt:highly in 224) [ClassicSimilarity], result of:
        0.054064523 = score(doc=224,freq=1.0), product of:
          0.15873425 = queryWeight, product of:
            2.766298 = boost
            5.4495635 = idf(docFreq=518, maxDocs=44421)
            0.0105295535 = queryNorm
          0.34059772 = fieldWeight in 224, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.4495635 = idf(docFreq=518, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.2506976 = weight(abstract_txt:finnish in 224) [ClassicSimilarity], result of:
        0.2506976 = score(doc=224,freq=4.0), product of:
          0.25813043 = queryWeight, product of:
            3.1552098 = boost
            7.769642 = idf(docFreq=50, maxDocs=44421)
            0.0105295535 = queryNorm
          0.97120523 = fieldWeight in 224, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            7.769642 = idf(docFreq=50, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
      0.39011353 = weight(abstract_txt:lemmatization in 224) [ClassicSimilarity], result of:
        0.39011353 = score(doc=224,freq=1.0), product of:
          0.62986887 = queryWeight, product of:
            6.0364184 = boost
            9.909708 = idf(docFreq=5, maxDocs=44421)
            0.0105295535 = queryNorm
          0.61935675 = fieldWeight in 224, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            9.909708 = idf(docFreq=5, maxDocs=44421)
            0.0625 = fieldNorm(doc=224)
    0.4 = coord(10/25)
  2. Suominen, O.; Koskenniemi, I.: Annif Analyzer Shootout : comparing text lemmatization methods for automated subject indexing (2022) 0.33 
    0.33270353 = sum of:
  0.33270353 = product of:
    1.0396986 = sum of:
      0.0159623 = weight(abstract_txt:processing in 1659) [ClassicSimilarity], result of:
        0.0159623 = score(doc=1659,freq=1.0), product of:
          0.051857635 = queryWeight, product of:
            4.9249606 = idf(docFreq=876, maxDocs=44421)
            0.0105295535 = queryNorm
          0.30781004 = fieldWeight in 1659, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.9249606 = idf(docFreq=876, maxDocs=44421)
            0.0625 = fieldNorm(doc=1659)
      0.008437408 = weight(abstract_txt:results in 1659) [ClassicSimilarity], result of:
        0.008437408 = score(doc=1659,freq=1.0), product of:
          0.038807783 = queryWeight, product of:
            1.0594945 = boost
            3.4786456 = idf(docFreq=3724, maxDocs=44421)
            0.0105295535 = queryNorm
          0.21741535 = fieldWeight in 1659, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4786456 = idf(docFreq=3724, maxDocs=44421)
            0.0625 = fieldNorm(doc=1659)
      0.011912932 = weight(abstract_txt:well in 1659) [ClassicSimilarity], result of:
        0.011912932 = score(doc=1659,freq=1.0), product of:
          0.048841827 = queryWeight, product of:
            1.1885986 = boost
            3.9025342 = idf(docFreq=2437, maxDocs=44421)
            0.0105295535 = queryNorm
          0.24390839 = fieldWeight in 1659, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.9025342 = idf(docFreq=2437, maxDocs=44421)
            0.0625 = fieldNorm(doc=1659)
      0.018250316 = weight(abstract_txt:method in 1659) [ClassicSimilarity], result of:
        0.018250316 = score(doc=1659,freq=1.0), product of:
          0.06490723 = queryWeight, product of:
            1.3702059 = boost
            4.4988065 = idf(docFreq=1342, maxDocs=44421)
            0.0105295535 = queryNorm
          0.2811754 = fieldWeight in 1659, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.4988065 = idf(docFreq=1342, maxDocs=44421)
            0.0625 = fieldNorm(doc=1659)
      0.055319186 = weight(abstract_txt:stemming in 1659) [ClassicSimilarity], result of:
        0.055319186 = score(doc=1659,freq=1.0), product of:
          0.118758924 = queryWeight, product of:
            1.513306 = boost
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.0105295535 = queryNorm
          0.46581078 = fieldWeight in 1659, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.0625 = fieldNorm(doc=1659)
      0.024240632 = weight(abstract_txt:language in 1659) [ClassicSimilarity], result of:
        0.024240632 = score(doc=1659,freq=1.0), product of:
          0.0929876 = queryWeight, product of:
            2.1172695 = boost
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.0105295535 = queryNorm
          0.26068673 = fieldWeight in 1659, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.0625 = fieldNorm(doc=1659)
      0.1253488 = weight(abstract_txt:finnish in 1659) [ClassicSimilarity], result of:
        0.1253488 = score(doc=1659,freq=1.0), product of:
          0.25813043 = queryWeight, product of:
            3.1552098 = boost
            7.769642 = idf(docFreq=50, maxDocs=44421)
            0.0105295535 = queryNorm
          0.48560262 = fieldWeight in 1659, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.769642 = idf(docFreq=50, maxDocs=44421)
            0.0625 = fieldNorm(doc=1659)
      0.78022707 = weight(abstract_txt:lemmatization in 1659) [ClassicSimilarity], result of:
        0.78022707 = score(doc=1659,freq=4.0), product of:
          0.62986887 = queryWeight, product of:
            6.0364184 = boost
            9.909708 = idf(docFreq=5, maxDocs=44421)
            0.0105295535 = queryNorm
          1.2387135 = fieldWeight in 1659, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            9.909708 = idf(docFreq=5, maxDocs=44421)
            0.0625 = fieldNorm(doc=1659)
    0.32 = coord(8/25)
  3. Fautsch, C.; Savoy, J.: Algorithmic stemmers or morphological analysis? : an evaluation (2009) 0.20 
    0.19598114 = sum of:
  0.19598114 = product of:
    0.9799057 = sum of:
      0.097791426 = weight(abstract_txt:stemming in 3950) [ClassicSimilarity], result of:
        0.097791426 = score(doc=3950,freq=2.0), product of:
          0.118758924 = queryWeight, product of:
            1.513306 = boost
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.0105295535 = queryNorm
          0.82344484 = fieldWeight in 3950, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.078125 = fieldNorm(doc=3950)
      0.13076875 = weight(abstract_txt:stemmer in 3950) [ClassicSimilarity], result of:
        0.13076875 = score(doc=3950,freq=1.0), product of:
          0.18161221 = queryWeight, product of:
            1.871398 = boost
            9.216561 = idf(docFreq=11, maxDocs=44421)
            0.0105295535 = queryNorm
          0.72004384 = fieldWeight in 3950, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            9.216561 = idf(docFreq=11, maxDocs=44421)
            0.078125 = fieldNorm(doc=3950)
      0.042851787 = weight(abstract_txt:language in 3950) [ClassicSimilarity], result of:
        0.042851787 = score(doc=3950,freq=2.0), product of:
          0.0929876 = queryWeight, product of:
            2.1172695 = boost
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.0105295535 = queryNorm
          0.46083337 = fieldWeight in 3950, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.078125 = fieldNorm(doc=3950)
      0.25777274 = weight(abstract_txt:stem in 3950) [ClassicSimilarity], result of:
        0.25777274 = score(doc=3950,freq=1.0), product of:
          0.41178843 = queryWeight, product of:
            4.8808036 = boost
            8.0125885 = idf(docFreq=39, maxDocs=44421)
            0.0105295535 = queryNorm
          0.6259835 = fieldWeight in 3950, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            8.0125885 = idf(docFreq=39, maxDocs=44421)
            0.078125 = fieldNorm(doc=3950)
      0.45072103 = weight(abstract_txt:morphological in 3950) [ClassicSimilarity], result of:
        0.45072103 = score(doc=3950,freq=3.0), product of:
          0.41439477 = queryWeight, product of:
            4.896225 = boost
            8.037906 = idf(docFreq=38, maxDocs=44421)
            0.0105295535 = queryNorm
          1.087661 = fieldWeight in 3950, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            8.037906 = idf(docFreq=38, maxDocs=44421)
            0.078125 = fieldNorm(doc=3950)
    0.2 = coord(5/25)
  4. Pirkola, A.: Morphological typology of languages for IR (2001) 0.17 
    0.1746944 = sum of:
  0.1746944 = product of:
    0.72789335 = sum of:
      0.019952876 = weight(abstract_txt:processing in 5476) [ClassicSimilarity], result of:
        0.019952876 = score(doc=5476,freq=1.0), product of:
          0.051857635 = queryWeight, product of:
            4.9249606 = idf(docFreq=876, maxDocs=44421)
            0.0105295535 = queryNorm
          0.38476256 = fieldWeight in 5476, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.9249606 = idf(docFreq=876, maxDocs=44421)
            0.078125 = fieldNorm(doc=5476)
      0.02860093 = weight(abstract_txt:effects in 5476) [ClassicSimilarity], result of:
        0.02860093 = score(doc=5476,freq=1.0), product of:
          0.06592687 = queryWeight, product of:
            1.1275216 = boost
            5.5529995 = idf(docFreq=467, maxDocs=44421)
            0.0105295535 = queryNorm
          0.4338281 = fieldWeight in 5476, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.5529995 = idf(docFreq=467, maxDocs=44421)
            0.078125 = fieldNorm(doc=5476)
      0.06914898 = weight(abstract_txt:stemming in 5476) [ClassicSimilarity], result of:
        0.06914898 = score(doc=5476,freq=1.0), product of:
          0.118758924 = queryWeight, product of:
            1.513306 = boost
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.0105295535 = queryNorm
          0.58226347 = fieldWeight in 5476, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.078125 = fieldNorm(doc=5476)
      0.046890907 = weight(abstract_txt:purposes in 5476) [ClassicSimilarity], result of:
        0.046890907 = score(doc=5476,freq=1.0), product of:
          0.10492973 = queryWeight, product of:
            1.7421621 = boost
            5.720053 = idf(docFreq=395, maxDocs=44421)
            0.0105295535 = queryNorm
          0.44687915 = fieldWeight in 5476, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.720053 = idf(docFreq=395, maxDocs=44421)
            0.078125 = fieldNorm(doc=5476)
      0.042851787 = weight(abstract_txt:language in 5476) [ClassicSimilarity], result of:
        0.042851787 = score(doc=5476,freq=2.0), product of:
          0.0929876 = queryWeight, product of:
            2.1172695 = boost
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.0105295535 = queryNorm
          0.46083337 = fieldWeight in 5476, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.078125 = fieldNorm(doc=5476)
      0.52044785 = weight(abstract_txt:morphological in 5476) [ClassicSimilarity], result of:
        0.52044785 = score(doc=5476,freq=4.0), product of:
          0.41439477 = queryWeight, product of:
            4.896225 = boost
            8.037906 = idf(docFreq=38, maxDocs=44421)
            0.0105295535 = queryNorm
          1.2559228 = fieldWeight in 5476, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            8.037906 = idf(docFreq=38, maxDocs=44421)
            0.078125 = fieldNorm(doc=5476)
    0.24 = coord(6/25)
  5. Brychcín, T.; Konopík, M.: HPS: High precision stemmer (2015) 0.17 
    0.16941066 = sum of:
  0.16941066 = product of:
    0.52940834 = sum of:
      0.005878126 = weight(abstract_txt:with in 3686) [ClassicSimilarity], result of:
        0.005878126 = score(doc=3686,freq=2.0), product of:
          0.0266425 = queryWeight, product of:
            1.0136689 = boost
            2.4961398 = idf(docFreq=9949, maxDocs=44421)
            0.0105295535 = queryNorm
          0.22062966 = fieldWeight in 3686, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.4961398 = idf(docFreq=9949, maxDocs=44421)
            0.0625 = fieldNorm(doc=3686)
      0.011932296 = weight(abstract_txt:results in 3686) [ClassicSimilarity], result of:
        0.011932296 = score(doc=3686,freq=2.0), product of:
          0.038807783 = queryWeight, product of:
            1.0594945 = boost
            3.4786456 = idf(docFreq=3724, maxDocs=44421)
            0.0105295535 = queryNorm
          0.30747172 = fieldWeight in 3686, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.4786456 = idf(docFreq=3724, maxDocs=44421)
            0.0625 = fieldNorm(doc=3686)
      0.011912932 = weight(abstract_txt:well in 3686) [ClassicSimilarity], result of:
        0.011912932 = score(doc=3686,freq=1.0), product of:
          0.048841827 = queryWeight, product of:
            1.1885986 = boost
            3.9025342 = idf(docFreq=2437, maxDocs=44421)
            0.0105295535 = queryNorm
          0.24390839 = fieldWeight in 3686, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.9025342 = idf(docFreq=2437, maxDocs=44421)
            0.0625 = fieldNorm(doc=3686)
      0.018250316 = weight(abstract_txt:method in 3686) [ClassicSimilarity], result of:
        0.018250316 = score(doc=3686,freq=1.0), product of:
          0.06490723 = queryWeight, product of:
            1.3702059 = boost
            4.4988065 = idf(docFreq=1342, maxDocs=44421)
            0.0105295535 = queryNorm
          0.2811754 = fieldWeight in 3686, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.4988065 = idf(docFreq=1342, maxDocs=44421)
            0.0625 = fieldNorm(doc=3686)
      0.14636081 = weight(abstract_txt:stemming in 3686) [ClassicSimilarity], result of:
        0.14636081 = score(doc=3686,freq=7.0), product of:
          0.118758924 = queryWeight, product of:
            1.513306 = boost
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.0105295535 = queryNorm
          1.2324195 = fieldWeight in 3686, product of:
            2.6457512 = tf(freq=7.0), with freq of:
              7.0 = termFreq=7.0
            7.4529724 = idf(docFreq=69, maxDocs=44421)
            0.0625 = fieldNorm(doc=3686)
      0.104615 = weight(abstract_txt:stemmer in 3686) [ClassicSimilarity], result of:
        0.104615 = score(doc=3686,freq=1.0), product of:
          0.18161221 = queryWeight, product of:
            1.871398 = boost
            9.216561 = idf(docFreq=11, maxDocs=44421)
            0.0105295535 = queryNorm
          0.5760351 = fieldWeight in 3686, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            9.216561 = idf(docFreq=11, maxDocs=44421)
            0.0625 = fieldNorm(doc=3686)
      0.024240632 = weight(abstract_txt:language in 3686) [ClassicSimilarity], result of:
        0.024240632 = score(doc=3686,freq=1.0), product of:
          0.0929876 = queryWeight, product of:
            2.1172695 = boost
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.0105295535 = queryNorm
          0.26068673 = fieldWeight in 3686, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.1709876 = idf(docFreq=1863, maxDocs=44421)
            0.0625 = fieldNorm(doc=3686)
      0.2062182 = weight(abstract_txt:stem in 3686) [ClassicSimilarity], result of:
        0.2062182 = score(doc=3686,freq=1.0), product of:
          0.41178843 = queryWeight, product of:
            4.8808036 = boost
            8.0125885 = idf(docFreq=39, maxDocs=44421)
            0.0105295535 = queryNorm
          0.5007868 = fieldWeight in 3686, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            8.0125885 = idf(docFreq=39, maxDocs=44421)
            0.0625 = fieldNorm(doc=3686)
    0.32 = coord(8/25)