Document (#39107)

Author

Martín-Moncunill, D.
García-Barriocanal, E.
Sicilia, M.-A.
Sánchez-Alonso, S.

Title

Evaluating the practical applicability of thesaurus-based keyphrase extraction in the agricultural domain : insights from the VOA3R project

Source

Knowledge organization. 42(2015) no.2, S.76-89

Year

2015

Abstract

The use of Knowledge Organization Systems (KOSs) in aggregated metadata collections facilitates the implementation of search mechanisms operating on the same term or keyphrase space, thus preparing the ground for improved browsing, more accurate retrieval and better user profiling. Automatic thesaurus-based keyphrase extraction appears to be an inexpensive tool to obtain this information, but the studies on its effectiveness are scattered and do not consider the practical applicability of these techniques compared to the quality obtained by involving human experts. This paper presents an evaluation of keyphrase extraction using the KEA software and the AGROVOC vocabulary on a sample of a large collection of metadata in the field of agriculture from the AGRIS database. This effort includes a double evaluation, the classical automatic evaluation based on precision and recall measures, plus a blind evaluation aimed to contrast the quality of the keyphrases extracted against expert-provided samples and against the keyphrases originally recorded in the metadata. Results show not only that KEA outperforms humans in matching the original keyphrases, but also that the quality of the keyphrases extracted was similar to those provided by humans.

Content

Vgl.: http://www.ergon-verlag.de/isko_ko/downloads/ko_42_2015_2_b.pdf.

Theme

Konzeption und Anwendung des Prinzips Thesaurus

Field

Landbauwissenschaft

Similar documents (author)

1. Gaona-García, P.A.; Stoitsis, G.; Sánchez-Alonso, S.; Biniari, K.: ¬An exploratory study of user perception in visual search interfaces based on SKOS (2016) 1.85

   1.8480339 = sum of:
     1.8480339 = product of:
       3.0800564 = sum of:
         0.96870863 = weight(author_txt:garcía in 2965) [ClassicSimilarity], result of:
           0.96870863 = score(doc=2965,freq=1.0), product of:
             0.38336378 = queryWeight, product of:
               8.085969 = idf(docFreq=36, maxDocs=44218)
               0.047410987 = queryNorm
             2.5268652 = fieldWeight in 2965, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.085969 = idf(docFreq=36, maxDocs=44218)
               0.3125 = fieldNorm(doc=2965)
         0.9785895 = weight(author_txt:sánchez in 2965) [ClassicSimilarity], result of:
           0.9785895 = score(doc=2965,freq=1.0), product of:
             0.38596624 = queryWeight, product of:
               1.0033885 = boost
               8.113368 = idf(docFreq=35, maxDocs=44218)
               0.047410987 = queryNorm
             2.5354276 = fieldWeight in 2965, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.113368 = idf(docFreq=35, maxDocs=44218)
               0.3125 = fieldNorm(doc=2965)
         1.1327584 = weight(author_txt:alonso in 2965) [ClassicSimilarity], result of:
           1.1327584 = score(doc=2965,freq=1.0), product of:
             0.42550743 = queryWeight, product of:
               1.0535327 = boost
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.047410987 = queryNorm
             2.6621354 = fieldWeight in 2965, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.3125 = fieldNorm(doc=2965)
       0.6 = coord(3/5)
   

2. Garcia-Barriocanal, E.; Sicilia, M.A.; Sanchez-Alonso, S.: Usability evaluation of ontology editors (2005) 1.13

   1.1326221 = sum of:
     1.1326221 = product of:
       2.8315551 = sum of:
         1.1327584 = weight(author_txt:alonso in 3084) [ClassicSimilarity], result of:
           1.1327584 = score(doc=3084,freq=1.0), product of:
             0.42550743 = queryWeight, product of:
               1.0535327 = boost
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.047410987 = queryNorm
             2.6621354 = fieldWeight in 3084, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.3125 = fieldNorm(doc=3084)
         1.6987967 = weight(author_txt:sicilia in 3084) [ClassicSimilarity], result of:
           1.6987967 = score(doc=3084,freq=1.0), product of:
             0.5574979 = queryWeight, product of:
               1.2059133 = boost
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.047410987 = queryNorm
             3.0471804 = fieldWeight in 3084, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.3125 = fieldNorm(doc=3084)
       0.4 = coord(2/5)
   

3. Rajabi, E.; Sanchez-Alonso, S.; Sicilia, M.-A.: Analyzing broken links on the web of data : An experiment with DBpedia (2014) 1.13

   1.1326221 = sum of:
     1.1326221 = product of:
       2.8315551 = sum of:
         1.1327584 = weight(author_txt:alonso in 1330) [ClassicSimilarity], result of:
           1.1327584 = score(doc=1330,freq=1.0), product of:
             0.42550743 = queryWeight, product of:
               1.0535327 = boost
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.047410987 = queryNorm
             2.6621354 = fieldWeight in 1330, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.3125 = fieldNorm(doc=1330)
         1.6987967 = weight(author_txt:sicilia in 1330) [ClassicSimilarity], result of:
           1.6987967 = score(doc=1330,freq=1.0), product of:
             0.5574979 = queryWeight, product of:
               1.2059133 = boost
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.047410987 = queryNorm
             3.0471804 = fieldWeight in 1330, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.3125 = fieldNorm(doc=1330)
       0.4 = coord(2/5)
   

4. Rajabi, E.; Sicilia, M.-A.; Sanchez-Alonso, S.: Research objects interlinking : the case of Dryad repository (2014) 1.13

   1.1326221 = sum of:
     1.1326221 = product of:
       2.8315551 = sum of:
         1.1327584 = weight(author_txt:alonso in 1567) [ClassicSimilarity], result of:
           1.1327584 = score(doc=1567,freq=1.0), product of:
             0.42550743 = queryWeight, product of:
               1.0535327 = boost
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.047410987 = queryNorm
             2.6621354 = fieldWeight in 1567, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.518833 = idf(docFreq=23, maxDocs=44218)
               0.3125 = fieldNorm(doc=1567)
         1.6987967 = weight(author_txt:sicilia in 1567) [ClassicSimilarity], result of:
           1.6987967 = score(doc=1567,freq=1.0), product of:
             0.5574979 = queryWeight, product of:
               1.2059133 = boost
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.047410987 = queryNorm
             3.0471804 = fieldWeight in 1567, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.3125 = fieldNorm(doc=1567)
       0.4 = coord(2/5)
   

5. Blanco, I.; Martín-Bautista, M.J.; Sánchez, D.; Vila, A.: Fuzzy logic for measuring information retrieval effectiviness (2003) 0.90

   0.90182126 = sum of:
     0.90182126 = product of:
       2.254553 = sum of:
         0.9785895 = weight(author_txt:sánchez in 2779) [ClassicSimilarity], result of:
           0.9785895 = score(doc=2779,freq=1.0), product of:
             0.38596624 = queryWeight, product of:
               1.0033885 = boost
               8.113368 = idf(docFreq=35, maxDocs=44218)
               0.047410987 = queryNorm
             2.5354276 = fieldWeight in 2779, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.113368 = idf(docFreq=35, maxDocs=44218)
               0.3125 = fieldNorm(doc=2779)
         1.2759637 = weight(author_txt:martín in 2779) [ClassicSimilarity], result of:
           1.2759637 = score(doc=2779,freq=1.0), product of:
             0.46065363 = queryWeight, product of:
               1.0961796 = boost
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.047410987 = queryNorm
             2.7698982 = fieldWeight in 2779, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.863674 = idf(docFreq=16, maxDocs=44218)
               0.3125 = fieldNorm(doc=2779)
       0.4 = coord(2/5)
   

Similar documents (content)

1. Jones, S.; Paynter, G.W.: Automatic extractionof document keyphrases for use in digital libraries : evaluations and applications (2002) 0.52

   0.5235452 = sum of:
     0.5235452 = product of:
       1.6360788 = sum of:
         0.010214377 = weight(abstract_txt:based in 601) [ClassicSimilarity], result of:
           0.010214377 = score(doc=601,freq=1.0), product of:
             0.05126529 = queryWeight, product of:
               1.231643 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0130566005 = queryNorm
             0.19924548 = fieldWeight in 601, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=601)
         0.04168855 = weight(abstract_txt:automatic in 601) [ClassicSimilarity], result of:
           0.04168855 = score(doc=601,freq=2.0), product of:
             0.090779185 = queryWeight, product of:
               1.3381988 = boost
               5.1955976 = idf(docFreq=665, maxDocs=44218)
               0.0130566005 = queryNorm
             0.45923027 = fieldWeight in 601, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1955976 = idf(docFreq=665, maxDocs=44218)
               0.0625 = fieldNorm(doc=601)
         0.049118247 = weight(abstract_txt:extracted in 601) [ClassicSimilarity], result of:
           0.049118247 = score(doc=601,freq=1.0), product of:
             0.12758912 = queryWeight, product of:
               1.586479 = boost
               6.159553 = idf(docFreq=253, maxDocs=44218)
               0.0130566005 = queryNorm
             0.38497207 = fieldWeight in 601, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.159553 = idf(docFreq=253, maxDocs=44218)
               0.0625 = fieldNorm(doc=601)
         0.031757396 = weight(abstract_txt:quality in 601) [ClassicSimilarity], result of:
           0.031757396 = score(doc=601,freq=1.0), product of:
             0.10920572 = queryWeight, product of:
               1.7976114 = boost
               4.6528544 = idf(docFreq=1145, maxDocs=44218)
               0.0130566005 = queryNorm
             0.2908034 = fieldWeight in 601, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.6528544 = idf(docFreq=1145, maxDocs=44218)
               0.0625 = fieldNorm(doc=601)
         0.05367079 = weight(abstract_txt:evaluation in 601) [ClassicSimilarity], result of:
           0.05367079 = score(doc=601,freq=2.0), product of:
             0.13535586 = queryWeight, product of:
               2.3108993 = boost
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.0130566005 = queryNorm
             0.3965162 = fieldWeight in 601, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.0625 = fieldNorm(doc=601)
         0.07483174 = weight(abstract_txt:extraction in 601) [ClassicSimilarity], result of:
           0.07483174 = score(doc=601,freq=1.0), product of:
             0.19337754 = queryWeight, product of:
               2.3920825 = boost
               6.1915555 = idf(docFreq=245, maxDocs=44218)
               0.0130566005 = queryNorm
             0.38697222 = fieldWeight in 601, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1915555 = idf(docFreq=245, maxDocs=44218)
               0.0625 = fieldNorm(doc=601)
         0.4527194 = weight(abstract_txt:keyphrase in 601) [ClassicSimilarity], result of:
           0.4527194 = score(doc=601,freq=2.0), product of:
             0.5608815 = queryWeight, product of:
               4.7041163 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.0130566005 = queryNorm
             0.8071569 = fieldWeight in 601, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.0625 = fieldNorm(doc=601)
         0.9220784 = weight(abstract_txt:keyphrases in 601) [ClassicSimilarity], result of:
           0.9220784 = score(doc=601,freq=7.0), product of:
             0.5935732 = queryWeight, product of:
               4.8392677 = boost
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.0130566005 = queryNorm
             1.5534366 = fieldWeight in 601, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.0625 = fieldNorm(doc=601)
       0.32 = coord(8/25)
   

2. Wu, Y.-f.B.; Li, Q.; Bot, R.S.; Chen, X.: Finding nuggets in documents : a machine learning approach (2006) 0.39

   0.38630834 = sum of:
     0.38630834 = product of:
       1.6096182 = sum of:
         0.028977495 = weight(abstract_txt:thesaurus in 5290) [ClassicSimilarity], result of:
           0.028977495 = score(doc=5290,freq=1.0), product of:
             0.089748174 = queryWeight, product of:
               1.3305779 = boost
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.0130566005 = queryNorm
             0.3228756 = fieldWeight in 5290, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.0625 = fieldNorm(doc=5290)
         0.029478258 = weight(abstract_txt:automatic in 5290) [ClassicSimilarity], result of:
           0.029478258 = score(doc=5290,freq=1.0), product of:
             0.090779185 = queryWeight, product of:
               1.3381988 = boost
               5.1955976 = idf(docFreq=665, maxDocs=44218)
               0.0130566005 = queryNorm
             0.32472485 = fieldWeight in 5290, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1955976 = idf(docFreq=665, maxDocs=44218)
               0.0625 = fieldNorm(doc=5290)
         0.036667295 = weight(abstract_txt:metadata in 5290) [ClassicSimilarity], result of:
           0.036667295 = score(doc=5290,freq=1.0), product of:
             0.12018993 = queryWeight, product of:
               1.8858501 = boost
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.0130566005 = queryNorm
             0.30507794 = fieldWeight in 5290, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.0625 = fieldNorm(doc=5290)
         0.03795098 = weight(abstract_txt:evaluation in 5290) [ClassicSimilarity], result of:
           0.03795098 = score(doc=5290,freq=1.0), product of:
             0.13535586 = queryWeight, product of:
               2.3108993 = boost
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.0130566005 = queryNorm
             0.2803793 = fieldWeight in 5290, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.0625 = fieldNorm(doc=5290)
         0.5544657 = weight(abstract_txt:keyphrase in 5290) [ClassicSimilarity], result of:
           0.5544657 = score(doc=5290,freq=3.0), product of:
             0.5608815 = queryWeight, product of:
               4.7041163 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.0130566005 = queryNorm
             0.9885613 = fieldWeight in 5290, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.0625 = fieldNorm(doc=5290)
         0.9220784 = weight(abstract_txt:keyphrases in 5290) [ClassicSimilarity], result of:
           0.9220784 = score(doc=5290,freq=7.0), product of:
             0.5935732 = queryWeight, product of:
               4.8392677 = boost
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.0130566005 = queryNorm
             1.5534366 = fieldWeight in 5290, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.0625 = fieldNorm(doc=5290)
       0.24 = coord(6/25)
   

3. Daudaravicius, V.: ¬A framework for keyphrase extraction from scientific journals (2016) 0.36

   0.35726458 = sum of:
     0.35726458 = product of:
       1.4886024 = sum of:
         0.015321567 = weight(abstract_txt:based in 2930) [ClassicSimilarity], result of:
           0.015321567 = score(doc=2930,freq=1.0), product of:
             0.05126529 = queryWeight, product of:
               1.231643 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0130566005 = queryNorm
             0.29886824 = fieldWeight in 2930, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.09375 = fieldNorm(doc=2930)
         0.03734873 = weight(abstract_txt:provided in 2930) [ClassicSimilarity], result of:
           0.03734873 = score(doc=2930,freq=1.0), product of:
             0.0811163 = queryWeight, product of:
               1.2649739 = boost
               4.9112997 = idf(docFreq=884, maxDocs=44218)
               0.0130566005 = queryNorm
             0.46043435 = fieldWeight in 2930, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9112997 = idf(docFreq=884, maxDocs=44218)
               0.09375 = fieldNorm(doc=2930)
         0.104195535 = weight(abstract_txt:extracted in 2930) [ClassicSimilarity], result of:
           0.104195535 = score(doc=2930,freq=2.0), product of:
             0.12758912 = queryWeight, product of:
               1.586479 = boost
               6.159553 = idf(docFreq=253, maxDocs=44218)
               0.0130566005 = queryNorm
             0.8166491 = fieldWeight in 2930, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.159553 = idf(docFreq=253, maxDocs=44218)
               0.09375 = fieldNorm(doc=2930)
         0.11224761 = weight(abstract_txt:extraction in 2930) [ClassicSimilarity], result of:
           0.11224761 = score(doc=2930,freq=1.0), product of:
             0.19337754 = queryWeight, product of:
               2.3920825 = boost
               6.1915555 = idf(docFreq=245, maxDocs=44218)
               0.0130566005 = queryNorm
             0.58045834 = fieldWeight in 2930, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1915555 = idf(docFreq=245, maxDocs=44218)
               0.09375 = fieldNorm(doc=2930)
         0.4801814 = weight(abstract_txt:keyphrase in 2930) [ClassicSimilarity], result of:
           0.4801814 = score(doc=2930,freq=1.0), product of:
             0.5608815 = queryWeight, product of:
               4.7041163 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.0130566005 = queryNorm
             0.85611916 = fieldWeight in 2930, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.09375 = fieldNorm(doc=2930)
         0.73930746 = weight(abstract_txt:keyphrases in 2930) [ClassicSimilarity], result of:
           0.73930746 = score(doc=2930,freq=2.0), product of:
             0.5935732 = queryWeight, product of:
               4.8392677 = boost
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.0130566005 = queryNorm
             1.2455202 = fieldWeight in 2930, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.09375 = fieldNorm(doc=2930)
       0.24 = coord(6/25)
   

4. Medelyan, O.; Witten, I.H.: Domain-independent automatic keyphrase indexing with small training sets (2008) 0.30

   0.3017364 = sum of:
     0.3017364 = product of:
       1.07763 = sum of:
         0.06246046 = weight(abstract_txt:agriculture in 1871) [ClassicSimilarity], result of:
           0.06246046 = score(doc=1871,freq=1.0), product of:
             0.10243267 = queryWeight, product of:
               1.005152 = boost
               7.805067 = idf(docFreq=48, maxDocs=44218)
               0.0130566005 = queryNorm
             0.6097709 = fieldWeight in 1871, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.805067 = idf(docFreq=48, maxDocs=44218)
               0.078125 = fieldNorm(doc=1871)
         0.012767971 = weight(abstract_txt:based in 1871) [ClassicSimilarity], result of:
           0.012767971 = score(doc=1871,freq=1.0), product of:
             0.05126529 = queryWeight, product of:
               1.231643 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0130566005 = queryNorm
             0.24905685 = fieldWeight in 1871, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.078125 = fieldNorm(doc=1871)
         0.03622187 = weight(abstract_txt:thesaurus in 1871) [ClassicSimilarity], result of:
           0.03622187 = score(doc=1871,freq=1.0), product of:
             0.089748174 = queryWeight, product of:
               1.3305779 = boost
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.0130566005 = queryNorm
             0.4035945 = fieldWeight in 1871, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.078125 = fieldNorm(doc=1871)
         0.036847822 = weight(abstract_txt:automatic in 1871) [ClassicSimilarity], result of:
           0.036847822 = score(doc=1871,freq=1.0), product of:
             0.090779185 = queryWeight, product of:
               1.3381988 = boost
               5.1955976 = idf(docFreq=665, maxDocs=44218)
               0.0130566005 = queryNorm
             0.40590608 = fieldWeight in 1871, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1955976 = idf(docFreq=665, maxDocs=44218)
               0.078125 = fieldNorm(doc=1871)
         0.09353967 = weight(abstract_txt:extraction in 1871) [ClassicSimilarity], result of:
           0.09353967 = score(doc=1871,freq=1.0), product of:
             0.19337754 = queryWeight, product of:
               2.3920825 = boost
               6.1915555 = idf(docFreq=245, maxDocs=44218)
               0.0130566005 = queryNorm
             0.48371527 = fieldWeight in 1871, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1915555 = idf(docFreq=245, maxDocs=44218)
               0.078125 = fieldNorm(doc=1871)
         0.4001512 = weight(abstract_txt:keyphrase in 1871) [ClassicSimilarity], result of:
           0.4001512 = score(doc=1871,freq=1.0), product of:
             0.5608815 = queryWeight, product of:
               4.7041163 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.0130566005 = queryNorm
             0.71343267 = fieldWeight in 1871, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.078125 = fieldNorm(doc=1871)
         0.4356411 = weight(abstract_txt:keyphrases in 1871) [ClassicSimilarity], result of:
           0.4356411 = score(doc=1871,freq=1.0), product of:
             0.5935732 = queryWeight, product of:
               4.8392677 = boost
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.0130566005 = queryNorm
             0.7339299 = fieldWeight in 1871, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.078125 = fieldNorm(doc=1871)
       0.28 = coord(7/25)
   

5. Jiang, Y.; Meng, R.; Huang, Y.; Lu, W.; Liu, J.: Generating keyphrases for readers : a controllable keyphrase generation framework (2023) 0.23

   0.23240489 = sum of:
     0.23240489 = product of:
       1.4525306 = sum of:
         0.010214377 = weight(abstract_txt:based in 1012) [ClassicSimilarity], result of:
           0.010214377 = score(doc=1012,freq=1.0), product of:
             0.05126529 = queryWeight, product of:
               1.231643 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0130566005 = queryNorm
             0.19924548 = fieldWeight in 1012, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=1012)
         0.029478258 = weight(abstract_txt:automatic in 1012) [ClassicSimilarity], result of:
           0.029478258 = score(doc=1012,freq=1.0), product of:
             0.090779185 = queryWeight, product of:
               1.3381988 = boost
               5.1955976 = idf(docFreq=665, maxDocs=44218)
               0.0130566005 = queryNorm
             0.32472485 = fieldWeight in 1012, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1955976 = idf(docFreq=665, maxDocs=44218)
               0.0625 = fieldNorm(doc=1012)
         0.71581215 = weight(abstract_txt:keyphrase in 1012) [ClassicSimilarity], result of:
           0.71581215 = score(doc=1012,freq=5.0), product of:
             0.5608815 = queryWeight, product of:
               4.7041163 = boost
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.0130566005 = queryNorm
             1.2762271 = fieldWeight in 1012, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               9.131938 = idf(docFreq=12, maxDocs=44218)
               0.0625 = fieldNorm(doc=1012)
         0.6970258 = weight(abstract_txt:keyphrases in 1012) [ClassicSimilarity], result of:
           0.6970258 = score(doc=1012,freq=4.0), product of:
             0.5935732 = queryWeight, product of:
               4.8392677 = boost
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.0130566005 = queryNorm
             1.1742878 = fieldWeight in 1012, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               9.394302 = idf(docFreq=9, maxDocs=44218)
               0.0625 = fieldNorm(doc=1012)
       0.16 = coord(4/25)