Document (#29927)

Author

Qin, J.
Hernández, N.

Title

Building interoperable vocabulary and structures for learning objects : an empirical study

Source

Journal of the American Society for Information Science and Technology. 57(2006) no.2, S.280-292

Year

2006

Abstract

The structural, functional, and production views on learning objects influence metadata structure and vocabulary. The authors drew on these views and conducted a literature review and in-depth analysis of 14 learning objects and over 500 components in these learning objects to model the knowledge framework for a learning object ontology. The learning object ontology reported in this article consists of 8 top-level classes, 28 classes at the second level, and 34 at the third level. Except class Learning object, all other classes have the three properties of preferred term, related term, and synonym. To validate the ontology, we conducted a query log analysis that focused an discovering what terms users have used at both conceptual and word levels. The findings show that the main classes in the ontology are either conceptually or linguistically similar to the top terms in the query log data. The authors built an "Exercise Editor" as an informal experiment to test its adoption ability in authoring tools. The main contribution of this project is in the framework for the learning object domain and the methodology used to develop and validate an ontology.

Similar documents (author)

1. Hernández, S. Fernández- -> Fernández-Hernández, S.: 4.73

   4.732824 = sum of:
     4.732824 = weight(author_txt:hernández in 1953) [ClassicSimilarity], result of:
       4.732824 = fieldWeight in 1953, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         8.924298 = idf(docFreq=15, maxDocs=44218)
         0.375 = fieldNorm(doc=1953)
   

2. Hernández, S. Soto- => Soto-Hernández, S.: 4.73

   4.732824 = sum of:
     4.732824 = weight(author_txt:hernández in 4821) [ClassicSimilarity], result of:
       4.732824 = fieldWeight in 4821, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         8.924298 = idf(docFreq=15, maxDocs=44218)
         0.375 = fieldNorm(doc=4821)
   

3. Pacheco, F. Hernández- => Hernández-Pacheco, F.: 4.73

   4.732824 = sum of:
     4.732824 = weight(author_txt:hernández in 5175) [ClassicSimilarity], result of:
       4.732824 = fieldWeight in 5175, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         8.924298 = idf(docFreq=15, maxDocs=44218)
         0.375 = fieldNorm(doc=5175)
   

4. Hernández, E. Chávez-=> Chávez-Hernández, E.: 4.73

   4.732824 = sum of:
     4.732824 = weight(author_txt:hernández in 5271) [ClassicSimilarity], result of:
       4.732824 = fieldWeight in 5271, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         8.924298 = idf(docFreq=15, maxDocs=44218)
         0.375 = fieldNorm(doc=5271)
   

5. Martínez-Arellano, F.F.; Hernández-Pacheco, F.; Chávez-Hernández, E.: Classification and subject indexing issues at a Mexican library specializing in law research (2019) 3.94

   3.94402 = sum of:
     3.94402 = weight(author_txt:hernández in 5278) [ClassicSimilarity], result of:
       3.94402 = fieldWeight in 5278, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         8.924298 = idf(docFreq=15, maxDocs=44218)
         0.3125 = fieldNorm(doc=5278)
   

Similar documents (content)

1. Lee, C.A.: ¬A framework for contextual information in digital collections (2011) 0.18

   0.1833995 = sum of:
     0.1833995 = product of:
       0.57312346 = sum of:
         0.0180693 = weight(abstract_txt:analysis in 4492) [ClassicSimilarity], result of:
           0.0180693 = score(doc=4492,freq=2.0), product of:
             0.063947536 = queryWeight, product of:
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.017502872 = queryNorm
             0.28256446 = fieldWeight in 4492, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4492)
         0.053821646 = weight(abstract_txt:discovering in 4492) [ClassicSimilarity], result of:
           0.053821646 = score(doc=4492,freq=1.0), product of:
             0.13238361 = queryWeight, product of:
               1.0173965 = boost
               7.4342074 = idf(docFreq=70, maxDocs=44218)
               0.017502872 = queryNorm
             0.40655822 = fieldWeight in 4492, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.4342074 = idf(docFreq=70, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4492)
         0.034921315 = weight(abstract_txt:framework in 4492) [ClassicSimilarity], result of:
           0.034921315 = score(doc=4492,freq=2.0), product of:
             0.099217884 = queryWeight, product of:
               1.2456129 = boost
               4.550903 = idf(docFreq=1268, maxDocs=44218)
               0.017502872 = queryNorm
             0.35196593 = fieldWeight in 4492, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.550903 = idf(docFreq=1268, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4492)
         0.025712097 = weight(abstract_txt:main in 4492) [ClassicSimilarity], result of:
           0.025712097 = score(doc=4492,freq=1.0), product of:
             0.10192903 = queryWeight, product of:
               1.2625165 = boost
               4.612661 = idf(docFreq=1192, maxDocs=44218)
               0.017502872 = queryNorm
             0.2522549 = fieldWeight in 4492, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.612661 = idf(docFreq=1192, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4492)
         0.028995698 = weight(abstract_txt:term in 4492) [ClassicSimilarity], result of:
           0.028995698 = score(doc=4492,freq=1.0), product of:
             0.11043209 = queryWeight, product of:
               1.3141222 = boost
               4.8012047 = idf(docFreq=987, maxDocs=44218)
               0.017502872 = queryNorm
             0.26256588 = fieldWeight in 4492, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8012047 = idf(docFreq=987, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4492)
         0.17044245 = weight(abstract_txt:objects in 4492) [ClassicSimilarity], result of:
           0.17044245 = score(doc=4492,freq=4.0), product of:
             0.28548375 = queryWeight, product of:
               2.9880908 = boost
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.017502872 = queryNorm
             0.5970303 = fieldWeight in 4492, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4492)
         0.0947194 = weight(abstract_txt:object in 4492) [ClassicSimilarity], result of:
           0.0947194 = score(doc=4492,freq=1.0), product of:
             0.30632013 = queryWeight, product of:
               3.0952153 = boost
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.017502872 = queryNorm
             0.30921704 = fieldWeight in 4492, 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=4492)
         0.14644149 = weight(abstract_txt:classes in 4492) [ClassicSimilarity], result of:
           0.14644149 = score(doc=4492,freq=2.0), product of:
             0.32507408 = queryWeight, product of:
               3.1885576 = boost
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.017502872 = queryNorm
             0.4504865 = fieldWeight in 4492, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4492)
       0.32 = coord(8/25)
   

2. Naskar, D.; Das, S.: HNS ontology using faceted approach (2019) 0.15

   0.15105891 = sum of:
     0.15105891 = product of:
       0.6294122 = sum of:
         0.014602201 = weight(abstract_txt:analysis in 5267) [ClassicSimilarity], result of:
           0.014602201 = score(doc=5267,freq=1.0), product of:
             0.063947536 = queryWeight, product of:
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.017502872 = queryNorm
             0.22834657 = fieldWeight in 5267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.058898136 = weight(abstract_txt:editor in 5267) [ClassicSimilarity], result of:
           0.058898136 = score(doc=5267,freq=1.0), product of:
             0.12860839 = queryWeight, product of:
               1.0027848 = boost
               7.3274393 = idf(docFreq=78, maxDocs=44218)
               0.017502872 = queryNorm
             0.45796496 = fieldWeight in 5267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.3274393 = idf(docFreq=78, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.032165322 = weight(abstract_txt:query in 5267) [ClassicSimilarity], result of:
           0.032165322 = score(doc=5267,freq=1.0), product of:
             0.10826055 = queryWeight, product of:
               1.3011376 = boost
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.017502872 = queryNorm
             0.2971103 = fieldWeight in 5267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.04606322 = weight(abstract_txt:vocabulary in 5267) [ClassicSimilarity], result of:
           0.04606322 = score(doc=5267,freq=1.0), product of:
             0.13754594 = queryWeight, product of:
               1.466601 = boost
               5.358293 = idf(docFreq=565, maxDocs=44218)
               0.017502872 = queryNorm
             0.33489332 = fieldWeight in 5267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.358293 = idf(docFreq=565, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.1673617 = weight(abstract_txt:classes in 5267) [ClassicSimilarity], result of:
           0.1673617 = score(doc=5267,freq=2.0), product of:
             0.32507408 = queryWeight, product of:
               3.1885576 = boost
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.017502872 = queryNorm
             0.51484174 = fieldWeight in 5267, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.31032163 = weight(abstract_txt:ontology in 5267) [ClassicSimilarity], result of:
           0.31032163 = score(doc=5267,freq=6.0), product of:
             0.36645097 = queryWeight, product of:
               3.7850013 = boost
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.017502872 = queryNorm
             0.8468299 = fieldWeight in 5267, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
       0.24 = coord(6/25)
   

3. Dumais, S.T.: Latent semantic analysis (2003) 0.14

   0.14190777 = sum of:
     0.14190777 = product of:
       0.3547694 = sum of:
         0.014602201 = weight(abstract_txt:analysis in 2462) [ClassicSimilarity], result of:
           0.014602201 = score(doc=2462,freq=4.0), product of:
             0.063947536 = queryWeight, product of:
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.017502872 = queryNorm
             0.22834657 = fieldWeight in 2462, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.032834593 = weight(abstract_txt:terms in 2462) [ClassicSimilarity], result of:
           0.032834593 = score(doc=2462,freq=11.0), product of:
             0.07834088 = queryWeight, product of:
               1.1068336 = boost
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.017502872 = queryNorm
             0.41912463 = fieldWeight in 2462, product of:
               3.3166249 = tf(freq=11.0), with freq of:
                 11.0 = termFreq=11.0
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.021266626 = weight(abstract_txt:authors in 2462) [ClassicSimilarity], result of:
           0.021266626 = score(doc=2462,freq=2.0), product of:
             0.10351915 = queryWeight, product of:
               1.2723261 = boost
               4.648501 = idf(docFreq=1150, maxDocs=44218)
               0.017502872 = queryNorm
             0.20543665 = fieldWeight in 2462, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.648501 = idf(docFreq=1150, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.035961926 = weight(abstract_txt:query in 2462) [ClassicSimilarity], result of:
           0.035961926 = score(doc=2462,freq=5.0), product of:
             0.10826055 = queryWeight, product of:
               1.3011376 = boost
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.017502872 = queryNorm
             0.3321794 = fieldWeight in 2462, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.01656897 = weight(abstract_txt:term in 2462) [ClassicSimilarity], result of:
           0.01656897 = score(doc=2462,freq=1.0), product of:
             0.11043209 = queryWeight, product of:
               1.3141222 = boost
               4.8012047 = idf(docFreq=987, maxDocs=44218)
               0.017502872 = queryNorm
             0.15003765 = fieldWeight in 2462, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8012047 = idf(docFreq=987, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.04606322 = weight(abstract_txt:vocabulary in 2462) [ClassicSimilarity], result of:
           0.04606322 = score(doc=2462,freq=4.0), product of:
             0.13754594 = queryWeight, product of:
               1.466601 = boost
               5.358293 = idf(docFreq=565, maxDocs=44218)
               0.017502872 = queryNorm
             0.33489332 = fieldWeight in 2462, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.358293 = idf(docFreq=565, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.020435331 = weight(abstract_txt:level in 2462) [ClassicSimilarity], result of:
           0.020435331 = score(doc=2462,freq=1.0), product of:
             0.14538395 = queryWeight, product of:
               1.8466815 = boost
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.017502872 = queryNorm
             0.14056112 = fieldWeight in 2462, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.04869784 = weight(abstract_txt:objects in 2462) [ClassicSimilarity], result of:
           0.04869784 = score(doc=2462,freq=1.0), product of:
             0.28548375 = queryWeight, product of:
               2.9880908 = boost
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.017502872 = queryNorm
             0.17058007 = fieldWeight in 2462, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.054125372 = weight(abstract_txt:object in 2462) [ClassicSimilarity], result of:
           0.054125372 = score(doc=2462,freq=1.0), product of:
             0.30632013 = queryWeight, product of:
               3.0952153 = boost
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.017502872 = queryNorm
             0.17669545 = fieldWeight in 2462, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6542544 = idf(docFreq=420, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
         0.06421332 = weight(abstract_txt:learning in 2462) [ClassicSimilarity], result of:
           0.06421332 = score(doc=2462,freq=1.0), product of:
             0.4325155 = queryWeight, product of:
               5.201384 = boost
               4.750873 = idf(docFreq=1038, maxDocs=44218)
               0.017502872 = queryNorm
             0.14846478 = fieldWeight in 2462, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.750873 = idf(docFreq=1038, maxDocs=44218)
               0.03125 = fieldNorm(doc=2462)
       0.4 = coord(10/25)
   

4. Ma, X.; Xue, P.; Matta, N.; Chen, Q.: Fine-grained ontology reconstruction for crisis knowledge based on integrated analysis of temporal-spatial factors (2021) 0.14

   0.13771385 = sum of:
     0.13771385 = product of:
       0.5738077 = sum of:
         0.014602201 = weight(abstract_txt:analysis in 232) [ClassicSimilarity], result of:
           0.014602201 = score(doc=232,freq=1.0), product of:
             0.063947536 = queryWeight, product of:
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.017502872 = queryNorm
             0.22834657 = fieldWeight in 232, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.0625 = fieldNorm(doc=232)
         0.029385254 = weight(abstract_txt:main in 232) [ClassicSimilarity], result of:
           0.029385254 = score(doc=232,freq=1.0), product of:
             0.10192903 = queryWeight, product of:
               1.2625165 = boost
               4.612661 = idf(docFreq=1192, maxDocs=44218)
               0.017502872 = queryNorm
             0.2882913 = fieldWeight in 232, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.612661 = idf(docFreq=1192, maxDocs=44218)
               0.0625 = fieldNorm(doc=232)
         0.03542136 = weight(abstract_txt:conducted in 232) [ClassicSimilarity], result of:
           0.03542136 = score(doc=232,freq=1.0), product of:
             0.115448534 = queryWeight, product of:
               1.3436381 = boost
               4.9090424 = idf(docFreq=886, maxDocs=44218)
               0.017502872 = queryNorm
             0.30681515 = fieldWeight in 232, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9090424 = idf(docFreq=886, maxDocs=44218)
               0.0625 = fieldNorm(doc=232)
         0.040870663 = weight(abstract_txt:level in 232) [ClassicSimilarity], result of:
           0.040870663 = score(doc=232,freq=1.0), product of:
             0.14538395 = queryWeight, product of:
               1.8466815 = boost
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.017502872 = queryNorm
             0.28112224 = fieldWeight in 232, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.0625 = fieldNorm(doc=232)
         0.1183426 = weight(abstract_txt:classes in 232) [ClassicSimilarity], result of:
           0.1183426 = score(doc=232,freq=1.0), product of:
             0.32507408 = queryWeight, product of:
               3.1885576 = boost
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.017502872 = queryNorm
             0.3640481 = fieldWeight in 232, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.0625 = fieldNorm(doc=232)
         0.33518565 = weight(abstract_txt:ontology in 232) [ClassicSimilarity], result of:
           0.33518565 = score(doc=232,freq=7.0), product of:
             0.36645097 = queryWeight, product of:
               3.7850013 = boost
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.017502872 = queryNorm
             0.9146807 = fieldWeight in 232, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.0625 = fieldNorm(doc=232)
       0.24 = coord(6/25)
   

5. AlQenaei, Z.M.; Monarchi, D.E.: ¬The use of learning techniques to analyze the results of a manual classification system (2016) 0.13

   0.13431492 = sum of:
     0.13431492 = product of:
       0.55964553 = sum of:
         0.025291752 = weight(abstract_txt:analysis in 2836) [ClassicSimilarity], result of:
           0.025291752 = score(doc=2836,freq=3.0), product of:
             0.063947536 = queryWeight, product of:
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.017502872 = queryNorm
             0.39550784 = fieldWeight in 2836, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.6535451 = idf(docFreq=3112, maxDocs=44218)
               0.0625 = fieldNorm(doc=2836)
         0.030075554 = weight(abstract_txt:authors in 2836) [ClassicSimilarity], result of:
           0.030075554 = score(doc=2836,freq=1.0), product of:
             0.10351915 = queryWeight, product of:
               1.2723261 = boost
               4.648501 = idf(docFreq=1150, maxDocs=44218)
               0.017502872 = queryNorm
             0.2905313 = fieldWeight in 2836, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.648501 = idf(docFreq=1150, maxDocs=44218)
               0.0625 = fieldNorm(doc=2836)
         0.03313794 = weight(abstract_txt:term in 2836) [ClassicSimilarity], result of:
           0.03313794 = score(doc=2836,freq=1.0), product of:
             0.11043209 = queryWeight, product of:
               1.3141222 = boost
               4.8012047 = idf(docFreq=987, maxDocs=44218)
               0.017502872 = queryNorm
             0.3000753 = fieldWeight in 2836, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8012047 = idf(docFreq=987, maxDocs=44218)
               0.0625 = fieldNorm(doc=2836)
         0.13773829 = weight(abstract_txt:objects in 2836) [ClassicSimilarity], result of:
           0.13773829 = score(doc=2836,freq=2.0), product of:
             0.28548375 = queryWeight, product of:
               2.9880908 = boost
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.017502872 = queryNorm
             0.4824733 = fieldWeight in 2836, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.0625 = fieldNorm(doc=2836)
         0.2049754 = weight(abstract_txt:classes in 2836) [ClassicSimilarity], result of:
           0.2049754 = score(doc=2836,freq=3.0), product of:
             0.32507408 = queryWeight, product of:
               3.1885576 = boost
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.017502872 = queryNorm
             0.6305498 = fieldWeight in 2836, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.8247695 = idf(docFreq=354, maxDocs=44218)
               0.0625 = fieldNorm(doc=2836)
         0.12842664 = weight(abstract_txt:learning in 2836) [ClassicSimilarity], result of:
           0.12842664 = score(doc=2836,freq=1.0), product of:
             0.4325155 = queryWeight, product of:
               5.201384 = boost
               4.750873 = idf(docFreq=1038, maxDocs=44218)
               0.017502872 = queryNorm
             0.29692957 = fieldWeight in 2836, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.750873 = idf(docFreq=1038, maxDocs=44218)
               0.0625 = fieldNorm(doc=2836)
       0.24 = coord(6/25)