Document (#38287)

Author

Zhang, Z.
Li, Q.
Zeng, D.
Ga, H.

Title

Extracting evolutionary communities in community question answering

Source

Journal of the Association for Information Science and Technology. 65(2014) no.6, S.1170-1186

Year

2014

Abstract

With the rapid growth of Web 2.0, community question answering (CQA) has become a prevalent information seeking channel, in which users form interactive communities by posting questions and providing answers. Communities may evolve over time, because of changes in users' interests, activities, and new users joining the network. To better understand user interactions in CQA communities, it is necessary to analyze the community structures and track community evolution over time. Existing work in CQA focuses on question searching or content quality detection, and the important problems of community extraction and evolutionary pattern detection have not been studied. In this article, we propose a probabilistic community model (PCM) to extract overlapping community structures and capture their evolution patterns in CQA. The empirical results show that our algorithm appears to improve the community extraction quality. We show empirically, using the iPhone data set, that interesting community evolution patterns can be discovered, with each evolution pattern reflecting the variation of users' interests over time. Our analysis suggests that individual users could benefit to gain comprehensive information from tracking the transition of products. We also show that the communities provide a decision-making basis for business.

Theme

Data Mining

Similar documents (author)

1. Zhang, J.; Zeng, M.L.: ¬A new similarity measure for subject hierarchical structures (2014) 4.94

   4.9427214 = sum of:
     4.9427214 = sum of:
       1.8615206 = weight(author_txt:zhang in 2778) [ClassicSimilarity], result of:
         1.8615206 = score(doc=2778,freq=1.0), product of:
           0.581439 = queryWeight, product of:
             6.40315 = idf(docFreq=199, maxDocs=44421)
             0.09080515 = queryNorm
           3.201575 = fieldWeight in 2778, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.40315 = idf(docFreq=199, maxDocs=44421)
             0.5 = fieldNorm(doc=2778)
       3.0812008 = weight(author_txt:zeng in 2778) [ClassicSimilarity], result of:
         3.0812008 = score(doc=2778,freq=1.0), product of:
           0.81359 = queryWeight, product of:
             1.1829073 = boost
             7.574333 = idf(docFreq=61, maxDocs=44421)
             0.09080515 = queryNorm
           3.7871666 = fieldWeight in 2778, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.574333 = idf(docFreq=61, maxDocs=44421)
             0.5 = fieldNorm(doc=2778)
   

2. Shen, D.; Chen, Z.; Yang, Q.; Zeng, H.J.; Zhang, B.; Lu, Y.; Ma, W.Y.: Web page classification through summarization (2004) 2.47

   2.4713607 = sum of:
     2.4713607 = sum of:
       0.9307603 = weight(author_txt:zhang in 5132) [ClassicSimilarity], result of:
         0.9307603 = score(doc=5132,freq=1.0), product of:
           0.581439 = queryWeight, product of:
             6.40315 = idf(docFreq=199, maxDocs=44421)
             0.09080515 = queryNorm
           1.6007875 = fieldWeight in 5132, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.40315 = idf(docFreq=199, maxDocs=44421)
             0.25 = fieldNorm(doc=5132)
       1.5406004 = weight(author_txt:zeng in 5132) [ClassicSimilarity], result of:
         1.5406004 = score(doc=5132,freq=1.0), product of:
           0.81359 = queryWeight, product of:
             1.1829073 = boost
             7.574333 = idf(docFreq=61, maxDocs=44421)
             0.09080515 = queryNorm
           1.8935833 = fieldWeight in 5132, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.574333 = idf(docFreq=61, maxDocs=44421)
             0.25 = fieldNorm(doc=5132)
   

3. Zhang, C.; Zeng, D.; Li, J.; Wang, F.-Y.; Zuo, W.: Sentiment analysis of Chinese documents : from sentence to document level (2009) 2.47

   2.4713607 = sum of:
     2.4713607 = sum of:
       0.9307603 = weight(author_txt:zhang in 283) [ClassicSimilarity], result of:
         0.9307603 = score(doc=283,freq=1.0), product of:
           0.581439 = queryWeight, product of:
             6.40315 = idf(docFreq=199, maxDocs=44421)
             0.09080515 = queryNorm
           1.6007875 = fieldWeight in 283, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.40315 = idf(docFreq=199, maxDocs=44421)
             0.25 = fieldNorm(doc=283)
       1.5406004 = weight(author_txt:zeng in 283) [ClassicSimilarity], result of:
         1.5406004 = score(doc=283,freq=1.0), product of:
           0.81359 = queryWeight, product of:
             1.1829073 = boost
             7.574333 = idf(docFreq=61, maxDocs=44421)
             0.09080515 = queryNorm
           1.8935833 = fieldWeight in 283, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.574333 = idf(docFreq=61, maxDocs=44421)
             0.25 = fieldNorm(doc=283)
   

4. Zeng, L.: ¬An introduction to thesauri and classification systems in the People's Republic of China (1986) 1.93

   1.9257505 = sum of:
     1.9257505 = product of:
       3.851501 = sum of:
         3.851501 = weight(author_txt:zeng in 1730) [ClassicSimilarity], result of:
           3.851501 = score(doc=1730,freq=1.0), product of:
             0.81359 = queryWeight, product of:
               1.1829073 = boost
               7.574333 = idf(docFreq=61, maxDocs=44421)
               0.09080515 = queryNorm
             4.7339582 = fieldWeight in 1730, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.574333 = idf(docFreq=61, maxDocs=44421)
               0.625 = fieldNorm(doc=1730)
       0.5 = coord(1/2)
   

5. Zeng, L.: Achieving compatibility of indexing languages in online access environment (1992) 1.93

   1.9257505 = sum of:
     1.9257505 = product of:
       3.851501 = sum of:
         3.851501 = weight(author_txt:zeng in 1352) [ClassicSimilarity], result of:
           3.851501 = score(doc=1352,freq=1.0), product of:
             0.81359 = queryWeight, product of:
               1.1829073 = boost
               7.574333 = idf(docFreq=61, maxDocs=44421)
               0.09080515 = queryNorm
             4.7339582 = fieldWeight in 1352, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.574333 = idf(docFreq=61, maxDocs=44421)
               0.625 = fieldNorm(doc=1352)
       0.5 = coord(1/2)
   

Similar documents (content)

1. Chua, A.Y.K.; Banerjee, S.: So fast so good : an analysis of answer quality and answer speed in community Question-answering sites (2013) 0.22

   0.217224 = sum of:
     0.217224 = product of:
       0.678825 = sum of:
         0.08174075 = weight(abstract_txt:posting in 2086) [ClassicSimilarity], result of:
           0.08174075 = score(doc=2086,freq=1.0), product of:
             0.15819232 = queryWeight, product of:
               1.1515112 = boost
               8.267481 = idf(docFreq=30, maxDocs=44421)
               0.016616672 = queryNorm
             0.51671755 = fieldWeight in 2086, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.267481 = idf(docFreq=30, maxDocs=44421)
               0.0625 = fieldNorm(doc=2086)
         0.10450046 = weight(abstract_txt:quality in 2086) [ClassicSimilarity], result of:
           0.10450046 = score(doc=2086,freq=13.0), product of:
             0.099846765 = queryWeight, product of:
               1.2937711 = boost
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.016616672 = queryNorm
             1.0466083 = fieldWeight in 2086, product of:
               3.6055512 = tf(freq=13.0), with freq of:
                 13.0 = termFreq=13.0
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.0625 = fieldNorm(doc=2086)
         0.0076530892 = weight(abstract_txt:that in 2086) [ClassicSimilarity], result of:
           0.0076530892 = score(doc=2086,freq=1.0), product of:
             0.051777076 = queryWeight, product of:
               1.3175715 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.016616672 = queryNorm
             0.14780845 = fieldWeight in 2086, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.0625 = fieldNorm(doc=2086)
         0.04382209 = weight(abstract_txt:time in 2086) [ClassicSimilarity], result of:
           0.04382209 = score(doc=2086,freq=2.0), product of:
             0.11950484 = queryWeight, product of:
               1.7335199 = boost
               4.1487055 = idf(docFreq=1905, maxDocs=44421)
               0.016616672 = queryNorm
             0.36669722 = fieldWeight in 2086, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.1487055 = idf(docFreq=1905, maxDocs=44421)
               0.0625 = fieldNorm(doc=2086)
         0.03314124 = weight(abstract_txt:over in 2086) [ClassicSimilarity], result of:
           0.03314124 = score(doc=2086,freq=1.0), product of:
             0.12498156 = queryWeight, product of:
               1.7727972 = boost
               4.242705 = idf(docFreq=1734, maxDocs=44421)
               0.016616672 = queryNorm
             0.26516905 = fieldWeight in 2086, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.242705 = idf(docFreq=1734, maxDocs=44421)
               0.0625 = fieldNorm(doc=2086)
         0.08465099 = weight(abstract_txt:answering in 2086) [ClassicSimilarity], result of:
           0.08465099 = score(doc=2086,freq=1.0), product of:
             0.20401293 = queryWeight, product of:
               1.8493508 = boost
               6.6388726 = idf(docFreq=157, maxDocs=44421)
               0.016616672 = queryNorm
             0.41492954 = fieldWeight in 2086, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6388726 = idf(docFreq=157, maxDocs=44421)
               0.0625 = fieldNorm(doc=2086)
         0.18322831 = weight(abstract_txt:question in 2086) [ClassicSimilarity], result of:
           0.18322831 = score(doc=2086,freq=9.0), product of:
             0.18786576 = queryWeight, product of:
               2.1735013 = boost
               5.2016807 = idf(docFreq=664, maxDocs=44421)
               0.016616672 = queryNorm
             0.9753151 = fieldWeight in 2086, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               5.2016807 = idf(docFreq=664, maxDocs=44421)
               0.0625 = fieldNorm(doc=2086)
         0.14008807 = weight(abstract_txt:community in 2086) [ClassicSimilarity], result of:
           0.14008807 = score(doc=2086,freq=1.0), product of:
             0.47123903 = queryWeight, product of:
               5.9623485 = boost
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.016616672 = queryNorm
             0.29727602 = fieldWeight in 2086, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.0625 = fieldNorm(doc=2086)
       0.32 = coord(8/25)
   

2. Velden, V.; Lagoze, C.: ¬The extraction of community structures from publication networks to support ethnographic observations of field differences in scientific communication (2013) 0.21

   0.21194905 = sum of:
     0.21194905 = product of:
       0.6623408 = sum of:
         0.0663593 = weight(abstract_txt:overlapping in 2128) [ClassicSimilarity], result of:
           0.0663593 = score(doc=2128,freq=1.0), product of:
             0.13766626 = queryWeight, product of:
               1.07421 = boost
               7.7124834 = idf(docFreq=53, maxDocs=44421)
               0.016616672 = queryNorm
             0.4820302 = fieldWeight in 2128, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.7124834 = idf(docFreq=53, maxDocs=44421)
               0.0625 = fieldNorm(doc=2128)
         0.013255538 = weight(abstract_txt:that in 2128) [ClassicSimilarity], result of:
           0.013255538 = score(doc=2128,freq=3.0), product of:
             0.051777076 = queryWeight, product of:
               1.3175715 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.016616672 = queryNorm
             0.25601172 = fieldWeight in 2128, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.0625 = fieldNorm(doc=2128)
         0.06723225 = weight(abstract_txt:structures in 2128) [ClassicSimilarity], result of:
           0.06723225 = score(doc=2128,freq=3.0), product of:
             0.12131496 = queryWeight, product of:
               1.4260923 = boost
               5.1194425 = idf(docFreq=721, maxDocs=44421)
               0.016616672 = queryNorm
             0.5541959 = fieldWeight in 2128, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.1194425 = idf(docFreq=721, maxDocs=44421)
               0.0625 = fieldNorm(doc=2128)
         0.042307444 = weight(abstract_txt:patterns in 2128) [ClassicSimilarity], result of:
           0.042307444 = score(doc=2128,freq=1.0), product of:
             0.12848355 = queryWeight, product of:
               1.467622 = boost
               5.2685275 = idf(docFreq=621, maxDocs=44421)
               0.016616672 = queryNorm
             0.32928297 = fieldWeight in 2128, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2685275 = idf(docFreq=621, maxDocs=44421)
               0.0625 = fieldNorm(doc=2128)
         0.0309869 = weight(abstract_txt:time in 2128) [ClassicSimilarity], result of:
           0.0309869 = score(doc=2128,freq=1.0), product of:
             0.11950484 = queryWeight, product of:
               1.7335199 = boost
               4.1487055 = idf(docFreq=1905, maxDocs=44421)
               0.016616672 = queryNorm
             0.2592941 = fieldWeight in 2128, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1487055 = idf(docFreq=1905, maxDocs=44421)
               0.0625 = fieldNorm(doc=2128)
         0.03314124 = weight(abstract_txt:over in 2128) [ClassicSimilarity], result of:
           0.03314124 = score(doc=2128,freq=1.0), product of:
             0.12498156 = queryWeight, product of:
               1.7727972 = boost
               4.242705 = idf(docFreq=1734, maxDocs=44421)
               0.016616672 = queryNorm
             0.26516905 = fieldWeight in 2128, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.242705 = idf(docFreq=1734, maxDocs=44421)
               0.0625 = fieldNorm(doc=2128)
         0.16641851 = weight(abstract_txt:communities in 2128) [ClassicSimilarity], result of:
           0.16641851 = score(doc=2128,freq=2.0), product of:
             0.3448848 = queryWeight, product of:
               3.801872 = boost
               5.4592443 = idf(docFreq=513, maxDocs=44421)
               0.016616672 = queryNorm
             0.48253357 = fieldWeight in 2128, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4592443 = idf(docFreq=513, maxDocs=44421)
               0.0625 = fieldNorm(doc=2128)
         0.24263965 = weight(abstract_txt:community in 2128) [ClassicSimilarity], result of:
           0.24263965 = score(doc=2128,freq=3.0), product of:
             0.47123903 = queryWeight, product of:
               5.9623485 = boost
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.016616672 = queryNorm
             0.51489717 = fieldWeight in 2128, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.0625 = fieldNorm(doc=2128)
       0.32 = coord(8/25)
   

3. Panzarasa, P.; Opsahl, T.; Carley, K.M.: Patterns and dynamics of users' behavior and interaction : network analysis of an online community (2009) 0.20

   0.20139027 = sum of:
     0.20139027 = product of:
       0.6293446 = sum of:
         0.0076530892 = weight(abstract_txt:that in 3795) [ClassicSimilarity], result of:
           0.0076530892 = score(doc=3795,freq=1.0), product of:
             0.051777076 = queryWeight, product of:
               1.3175715 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.016616672 = queryNorm
             0.14780845 = fieldWeight in 3795, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.0625 = fieldNorm(doc=3795)
         0.042307444 = weight(abstract_txt:patterns in 3795) [ClassicSimilarity], result of:
           0.042307444 = score(doc=3795,freq=1.0), product of:
             0.12848355 = queryWeight, product of:
               1.467622 = boost
               5.2685275 = idf(docFreq=621, maxDocs=44421)
               0.016616672 = queryNorm
             0.32928297 = fieldWeight in 3795, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2685275 = idf(docFreq=621, maxDocs=44421)
               0.0625 = fieldNorm(doc=3795)
         0.0309869 = weight(abstract_txt:time in 3795) [ClassicSimilarity], result of:
           0.0309869 = score(doc=3795,freq=1.0), product of:
             0.11950484 = queryWeight, product of:
               1.7335199 = boost
               4.1487055 = idf(docFreq=1905, maxDocs=44421)
               0.016616672 = queryNorm
             0.2592941 = fieldWeight in 3795, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1487055 = idf(docFreq=1905, maxDocs=44421)
               0.0625 = fieldNorm(doc=3795)
         0.03314124 = weight(abstract_txt:over in 3795) [ClassicSimilarity], result of:
           0.03314124 = score(doc=3795,freq=1.0), product of:
             0.12498156 = queryWeight, product of:
               1.7727972 = boost
               4.242705 = idf(docFreq=1734, maxDocs=44421)
               0.016616672 = queryNorm
             0.26516905 = fieldWeight in 3795, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.242705 = idf(docFreq=1734, maxDocs=44421)
               0.0625 = fieldNorm(doc=3795)
         0.09286468 = weight(abstract_txt:users in 3795) [ClassicSimilarity], result of:
           0.09286468 = score(doc=3795,freq=8.0), product of:
             0.14726065 = queryWeight, product of:
               2.4842987 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.016616672 = queryNorm
             0.63061434 = fieldWeight in 3795, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.0625 = fieldNorm(doc=3795)
         0.106601104 = weight(abstract_txt:evolution in 3795) [ClassicSimilarity], result of:
           0.106601104 = score(doc=3795,freq=1.0), product of:
             0.2997465 = queryWeight, product of:
               3.1701698 = boost
               5.6902003 = idf(docFreq=407, maxDocs=44421)
               0.016616672 = queryNorm
             0.35563752 = fieldWeight in 3795, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6902003 = idf(docFreq=407, maxDocs=44421)
               0.0625 = fieldNorm(doc=3795)
         0.117675655 = weight(abstract_txt:communities in 3795) [ClassicSimilarity], result of:
           0.117675655 = score(doc=3795,freq=1.0), product of:
             0.3448848 = queryWeight, product of:
               3.801872 = boost
               5.4592443 = idf(docFreq=513, maxDocs=44421)
               0.016616672 = queryNorm
             0.34120277 = fieldWeight in 3795, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4592443 = idf(docFreq=513, maxDocs=44421)
               0.0625 = fieldNorm(doc=3795)
         0.19811444 = weight(abstract_txt:community in 3795) [ClassicSimilarity], result of:
           0.19811444 = score(doc=3795,freq=2.0), product of:
             0.47123903 = queryWeight, product of:
               5.9623485 = boost
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.016616672 = queryNorm
             0.42041177 = fieldWeight in 3795, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.0625 = fieldNorm(doc=3795)
       0.32 = coord(8/25)
   

4. Wu, P.F.; Korfiatis, N.: You scratch someone's back and we'll scratch yours : collective reciprocity in social Q&A communities (2013) 0.19

   0.18834834 = sum of:
     0.18834834 = product of:
       0.78478473 = sum of:
         0.021391036 = weight(abstract_txt:that in 2079) [ClassicSimilarity], result of:
           0.021391036 = score(doc=2079,freq=5.0), product of:
             0.051777076 = queryWeight, product of:
               1.3175715 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.016616672 = queryNorm
             0.4131372 = fieldWeight in 2079, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.078125 = fieldNorm(doc=2079)
         0.08776454 = weight(abstract_txt:pattern in 2079) [ClassicSimilarity], result of:
           0.08776454 = score(doc=2079,freq=1.0), product of:
             0.18009806 = queryWeight, product of:
               1.7375807 = boost
               6.2376356 = idf(docFreq=235, maxDocs=44421)
               0.016616672 = queryNorm
             0.4873153 = fieldWeight in 2079, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2376356 = idf(docFreq=235, maxDocs=44421)
               0.078125 = fieldNorm(doc=2079)
         0.07634514 = weight(abstract_txt:question in 2079) [ClassicSimilarity], result of:
           0.07634514 = score(doc=2079,freq=1.0), product of:
             0.18786576 = queryWeight, product of:
               2.1735013 = boost
               5.2016807 = idf(docFreq=664, maxDocs=44421)
               0.016616672 = queryNorm
             0.4063813 = fieldWeight in 2079, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2016807 = idf(docFreq=664, maxDocs=44421)
               0.078125 = fieldNorm(doc=2079)
         0.04104078 = weight(abstract_txt:users in 2079) [ClassicSimilarity], result of:
           0.04104078 = score(doc=2079,freq=1.0), product of:
             0.14726065 = queryWeight, product of:
               2.4842987 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.016616672 = queryNorm
             0.2786948 = fieldWeight in 2079, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.078125 = fieldNorm(doc=2079)
         0.20802312 = weight(abstract_txt:communities in 2079) [ClassicSimilarity], result of:
           0.20802312 = score(doc=2079,freq=2.0), product of:
             0.3448848 = queryWeight, product of:
               3.801872 = boost
               5.4592443 = idf(docFreq=513, maxDocs=44421)
               0.016616672 = queryNorm
             0.60316694 = fieldWeight in 2079, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4592443 = idf(docFreq=513, maxDocs=44421)
               0.078125 = fieldNorm(doc=2079)
         0.35022014 = weight(abstract_txt:community in 2079) [ClassicSimilarity], result of:
           0.35022014 = score(doc=2079,freq=4.0), product of:
             0.47123903 = queryWeight, product of:
               5.9623485 = boost
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.016616672 = queryNorm
             0.74319005 = fieldWeight in 2079, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.078125 = fieldNorm(doc=2079)
       0.24 = coord(6/25)
   

5. Sood, S.O.; Churchill, E.F.; Antin, J.: Automatic identification of personal insults on social news sites (2012) 0.17

   0.17219359 = sum of:
     0.17219359 = product of:
       0.71747327 = sum of:
         0.028983211 = weight(abstract_txt:quality in 976) [ClassicSimilarity], result of:
           0.028983211 = score(doc=976,freq=1.0), product of:
             0.099846765 = queryWeight, product of:
               1.2937711 = boost
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.016616672 = queryNorm
             0.2902769 = fieldWeight in 976, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.6444306 = idf(docFreq=1160, maxDocs=44421)
               0.0625 = fieldNorm(doc=976)
         0.010823103 = weight(abstract_txt:that in 976) [ClassicSimilarity], result of:
           0.010823103 = score(doc=976,freq=2.0), product of:
             0.051777076 = queryWeight, product of:
               1.3175715 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.016616672 = queryNorm
             0.20903271 = fieldWeight in 976, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.0625 = fieldNorm(doc=976)
         0.15577091 = weight(abstract_txt:detection in 976) [ClassicSimilarity], result of:
           0.15577091 = score(doc=976,freq=3.0), product of:
             0.2124158 = queryWeight, product of:
               1.887052 = boost
               6.774214 = idf(docFreq=137, maxDocs=44421)
               0.016616672 = queryNorm
             0.73333013 = fieldWeight in 976, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.774214 = idf(docFreq=137, maxDocs=44421)
               0.0625 = fieldNorm(doc=976)
         0.06107611 = weight(abstract_txt:question in 976) [ClassicSimilarity], result of:
           0.06107611 = score(doc=976,freq=1.0), product of:
             0.18786576 = queryWeight, product of:
               2.1735013 = boost
               5.2016807 = idf(docFreq=664, maxDocs=44421)
               0.016616672 = queryNorm
             0.32510504 = fieldWeight in 976, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2016807 = idf(docFreq=664, maxDocs=44421)
               0.0625 = fieldNorm(doc=976)
         0.117675655 = weight(abstract_txt:communities in 976) [ClassicSimilarity], result of:
           0.117675655 = score(doc=976,freq=1.0), product of:
             0.3448848 = queryWeight, product of:
               3.801872 = boost
               5.4592443 = idf(docFreq=513, maxDocs=44421)
               0.016616672 = queryNorm
             0.34120277 = fieldWeight in 976, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4592443 = idf(docFreq=513, maxDocs=44421)
               0.0625 = fieldNorm(doc=976)
         0.34314427 = weight(abstract_txt:community in 976) [ClassicSimilarity], result of:
           0.34314427 = score(doc=976,freq=6.0), product of:
             0.47123903 = queryWeight, product of:
               5.9623485 = boost
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.016616672 = queryNorm
             0.72817457 = fieldWeight in 976, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.7564163 = idf(docFreq=1037, maxDocs=44421)
               0.0625 = fieldNorm(doc=976)
       0.24 = coord(6/25)