Document (#26854)

Author

Ibekwe-SanJuan, F.
SanJuan, E.

Title

From term variants to research topics

Source

Knowledge organization. 29(2002) nos.3/4, S.181-197

Year

2002

Abstract

In a scientific and technological watch (STW) task, an expert user needs to survey the evolution of research topics in his area of specialisation in order to detect interesting changes. The majority of methods proposing evaluation metrics (bibliometrics and scientometrics studies) for STW rely solely an statistical data analysis methods (Co-citation analysis, co-word analysis). Such methods usually work an structured databases where the units of analysis (words, keywords) are already attributed to documents by human indexers. The advent of huge amounts of unstructured textual data has rendered necessary the integration of natural language processing (NLP) techniques to first extract meaningful units from texts. We propose a method for STW which is NLP-oriented. The method not only analyses texts linguistically in order to extract terms from them, but also uses linguistic relations (syntactic variations) as the basis for clustering. Terms and variation relations are formalised as weighted di-graphs which the clustering algorithm, CPCL (Classification by Preferential Clustered Link) will seek to reduce in order to produces classes. These classes ideally represent the research topics present in the corpus. The results of the classification are subjected to validation by an expert in STW.

Theme

Computerlinguistik
Automatisches Klassifizieren

Similar documents (author)

1. Ibekwe-SanJuan, F.; SanJuan, E.: Knowledge organization research in the last two decades: 1988-2008 (2010) 6.81

   6.806153 = sum of:
     6.806153 = sum of:
       1.8100873 = weight(author_txt:ibekwe in 3522) [ClassicSimilarity], result of:
         1.8100873 = score(doc=3522,freq=1.0), product of:
           0.45306292 = queryWeight, product of:
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.04961301 = queryNorm
           3.9952228 = fieldWeight in 3522, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.4375 = fieldNorm(doc=3522)
       4.9960656 = weight(author_txt:sanjuan in 3522) [ClassicSimilarity], result of:
         4.9960656 = score(doc=3522,freq=2.0), product of:
           0.8914786 = queryWeight, product of:
             1.9837694 = boost
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.04961301 = queryNorm
           5.604246 = fieldWeight in 3522, product of:
             1.4142135 = tf(freq=2.0), with freq of:
               2.0 = termFreq=2.0
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.4375 = fieldNorm(doc=3522)
   

2. Ibekwe-SanJuan, F.: Constructing and maintaining knowledge organization tools : a symbolic approach (2006) 6.11

   6.106102 = sum of:
     6.106102 = sum of:
       2.0686712 = weight(author_txt:ibekwe in 5595) [ClassicSimilarity], result of:
         2.0686712 = score(doc=5595,freq=1.0), product of:
           0.45306292 = queryWeight, product of:
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.04961301 = queryNorm
           4.565969 = fieldWeight in 5595, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.5 = fieldNorm(doc=5595)
       4.037431 = weight(author_txt:sanjuan in 5595) [ClassicSimilarity], result of:
         4.037431 = score(doc=5595,freq=1.0), product of:
           0.8914786 = queryWeight, product of:
             1.9837694 = boost
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.04961301 = queryNorm
           4.528915 = fieldWeight in 5595, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.5 = fieldNorm(doc=5595)
   

3. Ibekwe-SanJuan, F.: ¬The impact of geographic location on the development of a specialty field : a case study of Sloan Digital Sky Survey in astronomy (2008) 6.11

   6.106102 = sum of:
     6.106102 = sum of:
       2.0686712 = weight(author_txt:ibekwe in 3241) [ClassicSimilarity], result of:
         2.0686712 = score(doc=3241,freq=1.0), product of:
           0.45306292 = queryWeight, product of:
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.04961301 = queryNorm
           4.565969 = fieldWeight in 3241, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.5 = fieldNorm(doc=3241)
       4.037431 = weight(author_txt:sanjuan in 3241) [ClassicSimilarity], result of:
         4.037431 = score(doc=3241,freq=1.0), product of:
           0.8914786 = queryWeight, product of:
             1.9837694 = boost
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.04961301 = queryNorm
           4.528915 = fieldWeight in 3241, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.5 = fieldNorm(doc=3241)
   

4. Ibekwe-SanJuan, F.: Semantic metadata annotation : tagging Medline abstracts for enhanced information access (2010) 6.11

   6.106102 = sum of:
     6.106102 = sum of:
       2.0686712 = weight(author_txt:ibekwe in 3949) [ClassicSimilarity], result of:
         2.0686712 = score(doc=3949,freq=1.0), product of:
           0.45306292 = queryWeight, product of:
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.04961301 = queryNorm
           4.565969 = fieldWeight in 3949, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.5 = fieldNorm(doc=3949)
       4.037431 = weight(author_txt:sanjuan in 3949) [ClassicSimilarity], result of:
         4.037431 = score(doc=3949,freq=1.0), product of:
           0.8914786 = queryWeight, product of:
             1.9837694 = boost
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.04961301 = queryNorm
           4.528915 = fieldWeight in 3949, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.5 = fieldNorm(doc=3949)
   

5. Ibekwe-SanJuan, F.: ¬The French conception of information science : "une exception française"? (2012) 6.11

   6.106102 = sum of:
     6.106102 = sum of:
       2.0686712 = weight(author_txt:ibekwe in 380) [ClassicSimilarity], result of:
         2.0686712 = score(doc=380,freq=1.0), product of:
           0.45306292 = queryWeight, product of:
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.04961301 = queryNorm
           4.565969 = fieldWeight in 380, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.131938 = idf(docFreq=12, maxDocs=44218)
             0.5 = fieldNorm(doc=380)
       4.037431 = weight(author_txt:sanjuan in 380) [ClassicSimilarity], result of:
         4.037431 = score(doc=380,freq=1.0), product of:
           0.8914786 = queryWeight, product of:
             1.9837694 = boost
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.04961301 = queryNorm
           4.528915 = fieldWeight in 380, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.05783 = idf(docFreq=13, maxDocs=44218)
             0.5 = fieldNorm(doc=380)
   

Similar documents (content)

1. Qin, J.: Semantic patterns in bibliographically coupled documents (2002) 0.17

   0.16910681 = sum of:
     0.16910681 = product of:
       0.5284588 = sum of:
         0.018808067 = weight(abstract_txt:research in 4266) [ClassicSimilarity], result of:
           0.018808067 = score(doc=4266,freq=2.0), product of:
             0.08949161 = queryWeight, product of:
               1.2120975 = boost
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.023288377 = queryNorm
             0.2101657 = fieldWeight in 4266, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.046875 = fieldNorm(doc=4266)
         0.04747093 = weight(abstract_txt:relations in 4266) [ClassicSimilarity], result of:
           0.04747093 = score(doc=4266,freq=1.0), product of:
             0.18259306 = queryWeight, product of:
               1.4136533 = boost
               5.5462847 = idf(docFreq=468, maxDocs=44218)
               0.023288377 = queryNorm
             0.2599821 = fieldWeight in 4266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5462847 = idf(docFreq=468, maxDocs=44218)
               0.046875 = fieldNorm(doc=4266)
         0.050297607 = weight(abstract_txt:texts in 4266) [ClassicSimilarity], result of:
           0.050297607 = score(doc=4266,freq=1.0), product of:
             0.18977137 = queryWeight, product of:
               1.441173 = boost
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.023288377 = queryNorm
             0.26504317 = fieldWeight in 4266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.046875 = fieldNorm(doc=4266)
         0.06683537 = weight(abstract_txt:clustering in 4266) [ClassicSimilarity], result of:
           0.06683537 = score(doc=4266,freq=1.0), product of:
             0.22937006 = queryWeight, product of:
               1.5844157 = boost
               6.2162485 = idf(docFreq=239, maxDocs=44218)
               0.023288377 = queryNorm
             0.29138666 = fieldWeight in 4266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2162485 = idf(docFreq=239, maxDocs=44218)
               0.046875 = fieldNorm(doc=4266)
         0.15079735 = weight(abstract_txt:units in 4266) [ClassicSimilarity], result of:
           0.15079735 = score(doc=4266,freq=4.0), product of:
             0.24856594 = queryWeight, product of:
               1.6493832 = boost
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.023288377 = queryNorm
             0.6066694 = fieldWeight in 4266, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.046875 = fieldNorm(doc=4266)
         0.07988491 = weight(abstract_txt:extract in 4266) [ClassicSimilarity], result of:
           0.07988491 = score(doc=4266,freq=1.0), product of:
             0.25833046 = queryWeight, product of:
               1.6814679 = boost
               6.5970206 = idf(docFreq=163, maxDocs=44218)
               0.023288377 = queryNorm
             0.30923533 = fieldWeight in 4266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.5970206 = idf(docFreq=163, maxDocs=44218)
               0.046875 = fieldNorm(doc=4266)
         0.036703095 = weight(abstract_txt:order in 4266) [ClassicSimilarity], result of:
           0.036703095 = score(doc=4266,freq=1.0), product of:
             0.17607513 = queryWeight, product of:
               1.700182 = boost
               4.446962 = idf(docFreq=1407, maxDocs=44218)
               0.023288377 = queryNorm
             0.20845133 = fieldWeight in 4266, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.446962 = idf(docFreq=1407, maxDocs=44218)
               0.046875 = fieldNorm(doc=4266)
         0.077661455 = weight(abstract_txt:topics in 4266) [ClassicSimilarity], result of:
           0.077661455 = score(doc=4266,freq=2.0), product of:
             0.23033322 = queryWeight, product of:
               1.944575 = boost
               5.086191 = idf(docFreq=742, maxDocs=44218)
               0.023288377 = queryNorm
             0.33717 = fieldWeight in 4266, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.086191 = idf(docFreq=742, maxDocs=44218)
               0.046875 = fieldNorm(doc=4266)
       0.32 = coord(8/25)
   

2. Vickery, B.: Knowledge discovery from databases : an introductory review (1997) 0.16

   0.15783612 = sum of:
     0.15783612 = product of:
       0.56370044 = sum of:
         0.041723534 = weight(abstract_txt:classification in 4707) [ClassicSimilarity], result of:
           0.041723534 = score(doc=4707,freq=2.0), product of:
             0.094597004 = queryWeight, product of:
               1.0175118 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.023288377 = queryNorm
             0.44106615 = fieldWeight in 4707, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.078125 = fieldNorm(doc=4707)
         0.020769931 = weight(abstract_txt:from in 4707) [ClassicSimilarity], result of:
           0.020769931 = score(doc=4707,freq=2.0), product of:
             0.068015896 = queryWeight, product of:
               1.0566998 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.023288377 = queryNorm
             0.30536878 = fieldWeight in 4707, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.078125 = fieldNorm(doc=4707)
         0.07911821 = weight(abstract_txt:relations in 4707) [ClassicSimilarity], result of:
           0.07911821 = score(doc=4707,freq=1.0), product of:
             0.18259306 = queryWeight, product of:
               1.4136533 = boost
               5.5462847 = idf(docFreq=468, maxDocs=44218)
               0.023288377 = queryNorm
             0.43330348 = fieldWeight in 4707, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5462847 = idf(docFreq=468, maxDocs=44218)
               0.078125 = fieldNorm(doc=4707)
         0.091644466 = weight(abstract_txt:classes in 4707) [ClassicSimilarity], result of:
           0.091644466 = score(doc=4707,freq=1.0), product of:
             0.20138979 = queryWeight, product of:
               1.4846343 = boost
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.023288377 = queryNorm
             0.45506012 = fieldWeight in 4707, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.078125 = fieldNorm(doc=4707)
         0.11139228 = weight(abstract_txt:clustering in 4707) [ClassicSimilarity], result of:
           0.11139228 = score(doc=4707,freq=1.0), product of:
             0.22937006 = queryWeight, product of:
               1.5844157 = boost
               6.2162485 = idf(docFreq=239, maxDocs=44218)
               0.023288377 = queryNorm
             0.4856444 = fieldWeight in 4707, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2162485 = idf(docFreq=239, maxDocs=44218)
               0.078125 = fieldNorm(doc=4707)
         0.08591046 = weight(abstract_txt:methods in 4707) [ClassicSimilarity], result of:
           0.08591046 = score(doc=4707,freq=3.0), product of:
             0.15310428 = queryWeight, product of:
               1.5854044 = boost
               4.146752 = idf(docFreq=1900, maxDocs=44218)
               0.023288377 = queryNorm
             0.56112385 = fieldWeight in 4707, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.146752 = idf(docFreq=1900, maxDocs=44218)
               0.078125 = fieldNorm(doc=4707)
         0.13314152 = weight(abstract_txt:extract in 4707) [ClassicSimilarity], result of:
           0.13314152 = score(doc=4707,freq=1.0), product of:
             0.25833046 = queryWeight, product of:
               1.6814679 = boost
               6.5970206 = idf(docFreq=163, maxDocs=44218)
               0.023288377 = queryNorm
             0.51539224 = fieldWeight in 4707, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.5970206 = idf(docFreq=163, maxDocs=44218)
               0.078125 = fieldNorm(doc=4707)
       0.28 = coord(7/25)
   

3. Ibekwe-SanJuan, F.: Constructing and maintaining knowledge organization tools : a symbolic approach (2006) 0.15

   0.1517655 = sum of:
     0.1517655 = product of:
       0.5420196 = sum of:
         0.042932726 = weight(abstract_txt:terms in 5595) [ClassicSimilarity], result of:
           0.042932726 = score(doc=5595,freq=4.0), product of:
             0.097067446 = queryWeight, product of:
               1.0307126 = boost
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.023288377 = queryNorm
             0.4422979 = fieldWeight in 5595, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.0546875 = fieldNorm(doc=5595)
         0.010280591 = weight(abstract_txt:from in 5595) [ClassicSimilarity], result of:
           0.010280591 = score(doc=5595,freq=1.0), product of:
             0.068015896 = queryWeight, product of:
               1.0566998 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.023288377 = queryNorm
             0.15114984 = fieldWeight in 5595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.0546875 = fieldNorm(doc=5595)
         0.10882449 = weight(abstract_txt:watch in 5595) [ClassicSimilarity], result of:
           0.10882449 = score(doc=5595,freq=1.0), product of:
             0.22735737 = queryWeight, product of:
               1.1154248 = boost
               8.752448 = idf(docFreq=18, maxDocs=44218)
               0.023288377 = queryNorm
             0.4786495 = fieldWeight in 5595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.752448 = idf(docFreq=18, maxDocs=44218)
               0.0546875 = fieldNorm(doc=5595)
         0.02959924 = weight(abstract_txt:method in 5595) [ClassicSimilarity], result of:
           0.02959924 = score(doc=5595,freq=1.0), product of:
             0.120250896 = queryWeight, product of:
               1.1472152 = boost
               4.50095 = idf(docFreq=1333, maxDocs=44218)
               0.023288377 = queryNorm
             0.2461457 = fieldWeight in 5595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.50095 = idf(docFreq=1333, maxDocs=44218)
               0.0546875 = fieldNorm(doc=5595)
         0.15664606 = weight(abstract_txt:relations in 5595) [ClassicSimilarity], result of:
           0.15664606 = score(doc=5595,freq=8.0), product of:
             0.18259306 = queryWeight, product of:
               1.4136533 = boost
               5.5462847 = idf(docFreq=468, maxDocs=44218)
               0.023288377 = queryNorm
             0.8578971 = fieldWeight in 5595, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               5.5462847 = idf(docFreq=468, maxDocs=44218)
               0.0546875 = fieldNorm(doc=5595)
         0.05868054 = weight(abstract_txt:texts in 5595) [ClassicSimilarity], result of:
           0.05868054 = score(doc=5595,freq=1.0), product of:
             0.18977137 = queryWeight, product of:
               1.441173 = boost
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.023288377 = queryNorm
             0.30921704 = fieldWeight in 5595, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.0546875 = fieldNorm(doc=5595)
         0.13505596 = weight(abstract_txt:clustering in 5595) [ClassicSimilarity], result of:
           0.13505596 = score(doc=5595,freq=3.0), product of:
             0.22937006 = queryWeight, product of:
               1.5844157 = boost
               6.2162485 = idf(docFreq=239, maxDocs=44218)
               0.023288377 = queryNorm
             0.58881253 = fieldWeight in 5595, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.2162485 = idf(docFreq=239, maxDocs=44218)
               0.0546875 = fieldNorm(doc=5595)
       0.28 = coord(7/25)
   

4. Hooydonk, G. Van: Standardizing relative impacts : estimating the quality of research from citation counts (1998) 0.15

   0.1492804 = sum of:
     0.1492804 = product of:
       0.5331443 = sum of:
         0.014686558 = weight(abstract_txt:from in 1791) [ClassicSimilarity], result of:
           0.014686558 = score(doc=1791,freq=1.0), product of:
             0.068015896 = queryWeight, product of:
               1.0566998 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.023288377 = queryNorm
             0.21592833 = fieldWeight in 1791, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.078125 = fieldNorm(doc=1791)
         0.059799492 = weight(abstract_txt:method in 1791) [ClassicSimilarity], result of:
           0.059799492 = score(doc=1791,freq=2.0), product of:
             0.120250896 = queryWeight, product of:
               1.1472152 = boost
               4.50095 = idf(docFreq=1333, maxDocs=44218)
               0.023288377 = queryNorm
             0.49728936 = fieldWeight in 1791, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.50095 = idf(docFreq=1333, maxDocs=44218)
               0.078125 = fieldNorm(doc=1791)
         0.054294214 = weight(abstract_txt:research in 1791) [ClassicSimilarity], result of:
           0.054294214 = score(doc=1791,freq=6.0), product of:
             0.08949161 = queryWeight, product of:
               1.2120975 = boost
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.023288377 = queryNorm
             0.6066961 = fieldWeight in 1791, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.078125 = fieldNorm(doc=1791)
         0.07911821 = weight(abstract_txt:relations in 1791) [ClassicSimilarity], result of:
           0.07911821 = score(doc=1791,freq=1.0), product of:
             0.18259306 = queryWeight, product of:
               1.4136533 = boost
               5.5462847 = idf(docFreq=468, maxDocs=44218)
               0.023288377 = queryNorm
             0.43330348 = fieldWeight in 1791, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5462847 = idf(docFreq=468, maxDocs=44218)
               0.078125 = fieldNorm(doc=1791)
         0.07014559 = weight(abstract_txt:methods in 1791) [ClassicSimilarity], result of:
           0.07014559 = score(doc=1791,freq=2.0), product of:
             0.15310428 = queryWeight, product of:
               1.5854044 = boost
               4.146752 = idf(docFreq=1900, maxDocs=44218)
               0.023288377 = queryNorm
             0.4581557 = fieldWeight in 1791, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.146752 = idf(docFreq=1900, maxDocs=44218)
               0.078125 = fieldNorm(doc=1791)
         0.12566446 = weight(abstract_txt:units in 1791) [ClassicSimilarity], result of:
           0.12566446 = score(doc=1791,freq=1.0), product of:
             0.24856594 = queryWeight, product of:
               1.6493832 = boost
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.023288377 = queryNorm
             0.50555784 = fieldWeight in 1791, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.078125 = fieldNorm(doc=1791)
         0.12943576 = weight(abstract_txt:topics in 1791) [ClassicSimilarity], result of:
           0.12943576 = score(doc=1791,freq=2.0), product of:
             0.23033322 = queryWeight, product of:
               1.944575 = boost
               5.086191 = idf(docFreq=742, maxDocs=44218)
               0.023288377 = queryNorm
             0.56195 = fieldWeight in 1791, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.086191 = idf(docFreq=742, maxDocs=44218)
               0.078125 = fieldNorm(doc=1791)
       0.28 = coord(7/25)
   

5. Moreira, A.; Alvarenga, L.; Paiva Oliveira, A. de: "Thesaurus" and "Ontology" : a study of the definitions found in the computer and information science literature (2004) 0.15

   0.14867167 = sum of:
     0.14867167 = product of:
       0.46459898 = sum of:
         0.030666236 = weight(abstract_txt:terms in 3726) [ClassicSimilarity], result of:
           0.030666236 = score(doc=3726,freq=1.0), product of:
             0.097067446 = queryWeight, product of:
               1.0307126 = boost
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.023288377 = queryNorm
             0.3159271 = fieldWeight in 3726, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.078125 = fieldNorm(doc=3726)
         0.020769931 = weight(abstract_txt:from in 3726) [ClassicSimilarity], result of:
           0.020769931 = score(doc=3726,freq=2.0), product of:
             0.068015896 = queryWeight, product of:
               1.0566998 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.023288377 = queryNorm
             0.30536878 = fieldWeight in 3726, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.078125 = fieldNorm(doc=3726)
         0.04228463 = weight(abstract_txt:method in 3726) [ClassicSimilarity], result of:
           0.04228463 = score(doc=3726,freq=1.0), product of:
             0.120250896 = queryWeight, product of:
               1.1472152 = boost
               4.50095 = idf(docFreq=1333, maxDocs=44218)
               0.023288377 = queryNorm
             0.3516367 = fieldWeight in 3726, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.50095 = idf(docFreq=1333, maxDocs=44218)
               0.078125 = fieldNorm(doc=3726)
         0.02216552 = weight(abstract_txt:research in 3726) [ClassicSimilarity], result of:
           0.02216552 = score(doc=3726,freq=1.0), product of:
             0.08949161 = queryWeight, product of:
               1.2120975 = boost
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.023288377 = queryNorm
             0.24768265 = fieldWeight in 3726, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.078125 = fieldNorm(doc=3726)
         0.08382934 = weight(abstract_txt:texts in 3726) [ClassicSimilarity], result of:
           0.08382934 = score(doc=3726,freq=1.0), product of:
             0.18977137 = queryWeight, product of:
               1.441173 = boost
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.023288377 = queryNorm
             0.44173864 = fieldWeight in 3726, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.078125 = fieldNorm(doc=3726)
         0.13314152 = weight(abstract_txt:extract in 3726) [ClassicSimilarity], result of:
           0.13314152 = score(doc=3726,freq=1.0), product of:
             0.25833046 = queryWeight, product of:
               1.6814679 = boost
               6.5970206 = idf(docFreq=163, maxDocs=44218)
               0.023288377 = queryNorm
             0.51539224 = fieldWeight in 3726, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.5970206 = idf(docFreq=163, maxDocs=44218)
               0.078125 = fieldNorm(doc=3726)
         0.086510025 = weight(abstract_txt:order in 3726) [ClassicSimilarity], result of:
           0.086510025 = score(doc=3726,freq=2.0), product of:
             0.17607513 = queryWeight, product of:
               1.700182 = boost
               4.446962 = idf(docFreq=1407, maxDocs=44218)
               0.023288377 = queryNorm
             0.4913245 = fieldWeight in 3726, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.446962 = idf(docFreq=1407, maxDocs=44218)
               0.078125 = fieldNorm(doc=3726)
         0.045231752 = weight(abstract_txt:analysis in 3726) [ClassicSimilarity], result of:
           0.045231752 = score(doc=3726,freq=1.0), product of:
             0.15846702 = queryWeight, product of:
               1.8624525 = boost
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.023288377 = queryNorm
             0.2854332 = fieldWeight in 3726, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.078125 = fieldNorm(doc=3726)
       0.32 = coord(8/25)