Document (#42046)

Author

Li, X.
Zhang, A.
Li, C.
Ouyang, J.
Cai, Y.

Title

Exploring coherent topics by topic modeling with term weighting

Source

Information processing and management. 54(2018) no.6, S.1345-1358

Year

2018

Abstract

Topic models often produce unexplainable topics that are filled with noisy words. The reason is that words in topic modeling have equal weights. High frequency words dominate the top topic word lists, but most of them are meaningless words, e.g., domain-specific stopwords. To address this issue, in this paper we aim to investigate how to weight words, and then develop a straightforward but effective term weighting scheme, namely entropy weighting (EW). The proposed EW scheme is based on conditional entropy measured by word co-occurrences. Compared with existing term weighting schemes, the highlight of EW is that it can automatically reward informative words. For more robust word weight, we further suggest a combination form of EW (CEW) with two existing weighting schemes. Basically, our CEW assigns meaningless words lower weights and informative words higher weights, leading to more coherent topics during topic modeling inference. We apply CEW to Dirichlet multinomial mixture and latent Dirichlet allocation, and evaluate it by topic quality, document clustering and classification tasks on 8 real world data sets. Experimental results show that weighting words can effectively improve the topic modeling performance over both short texts and normal long texts. More importantly, the proposed CEW significantly outperforms the existing term weighting schemes, since it further considers which words are informative.

Content

Vgl.: https://doi.org/10.1016/j.ipm.2018.05.009.

Theme

Automatisches Indexieren

Similar documents (author)

1. Zhang, M.; Zhang, Y.: Professional organizations in Twittersphere : an empirical study of U.S. library and information science professional organizations-related Tweets (2020) 4.53

   4.5277104 = sum of:
     4.5277104 = weight(author_txt:zhang in 775) [ClassicSimilarity], result of:
       4.5277104 = score(doc=775,freq=2.0), product of:
         0.99999994 = queryWeight, product of:
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.15617312 = queryNorm
         4.527711 = fieldWeight in 775, product of:
           1.4142135 = tf(freq=2.0), with freq of:
             2.0 = termFreq=2.0
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.5 = fieldNorm(doc=775)
   

2. Zhang, Y.; Zhang, C.: Enhancing keyphrase extraction from microblogs using human reading time (2021) 4.53

   4.5277104 = sum of:
     4.5277104 = weight(author_txt:zhang in 1238) [ClassicSimilarity], result of:
       4.5277104 = score(doc=1238,freq=2.0), product of:
         0.99999994 = queryWeight, product of:
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.15617312 = queryNorm
         4.527711 = fieldWeight in 1238, product of:
           1.4142135 = tf(freq=2.0), with freq of:
             2.0 = termFreq=2.0
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.5 = fieldNorm(doc=1238)
   

3. Zhang, J.: TOFIR: A tool of facilitating information retrieval : introduce a visual retrieval model (2001) 4.00

   4.0019684 = sum of:
     4.0019684 = weight(author_txt:zhang in 7710) [ClassicSimilarity], result of:
       4.0019684 = score(doc=7710,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.15617312 = queryNorm
         4.001969 = fieldWeight in 7710, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.625 = fieldNorm(doc=7710)
   

4. Zhang, A.: Multimedia file formats on the Internet : a beginner's guide for PC users (1995) 4.00

   4.0019684 = sum of:
     4.0019684 = weight(author_txt:zhang in 3280) [ClassicSimilarity], result of:
       4.0019684 = score(doc=3280,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.15617312 = queryNorm
         4.001969 = fieldWeight in 3280, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.625 = fieldNorm(doc=3280)
   

5. Zhang, J.: ¬A representational analysis of relational information displays (1996) 4.00

   4.0019684 = sum of:
     4.0019684 = weight(author_txt:zhang in 6471) [ClassicSimilarity], result of:
       4.0019684 = score(doc=6471,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.15617312 = queryNorm
         4.001969 = fieldWeight in 6471, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           6.40315 = idf(docFreq=199, maxDocs=44421)
           0.625 = fieldNorm(doc=6471)
   

Similar documents (content)

1. Paijmans, H.: Gravity wells of meaning : detecting information rich passages in scientific texts (1997) 0.35

   0.35429826 = sum of:
     0.35429826 = product of:
       1.1071821 = sum of:
         0.014001971 = weight(abstract_txt:that in 513) [ClassicSimilarity], result of:
           0.014001971 = score(doc=513,freq=2.0), product of:
             0.033492297 = queryWeight, product of:
               1.0264335 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.013797325 = queryNorm
             0.41806543 = fieldWeight in 513, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.125 = fieldNorm(doc=513)
         0.011641882 = weight(abstract_txt:with in 513) [ClassicSimilarity], result of:
           0.011641882 = score(doc=513,freq=1.0), product of:
             0.037311636 = queryWeight, product of:
               1.0833791 = boost
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.013797325 = queryNorm
             0.31201747 = fieldWeight in 513, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.125 = fieldNorm(doc=513)
         0.06706382 = weight(abstract_txt:texts in 513) [ClassicSimilarity], result of:
           0.06706382 = score(doc=513,freq=1.0), product of:
             0.095165096 = queryWeight, product of:
               1.2234386 = boost
               5.6376824 = idf(docFreq=429, maxDocs=44421)
               0.013797325 = queryNorm
             0.7047103 = fieldWeight in 513, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6376824 = idf(docFreq=429, maxDocs=44421)
               0.125 = fieldNorm(doc=513)
         0.09028426 = weight(abstract_txt:word in 513) [ClassicSimilarity], result of:
           0.09028426 = score(doc=513,freq=1.0), product of:
             0.1328181 = queryWeight, product of:
               1.7701807 = boost
               5.4380693 = idf(docFreq=524, maxDocs=44421)
               0.013797325 = queryNorm
             0.67975867 = fieldWeight in 513, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4380693 = idf(docFreq=524, maxDocs=44421)
               0.125 = fieldNorm(doc=513)
         0.09514451 = weight(abstract_txt:schemes in 513) [ClassicSimilarity], result of:
           0.09514451 = score(doc=513,freq=1.0), product of:
             0.13754296 = queryWeight, product of:
               1.8013917 = boost
               5.5339513 = idf(docFreq=476, maxDocs=44421)
               0.013797325 = queryNorm
             0.6917439 = fieldWeight in 513, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5339513 = idf(docFreq=476, maxDocs=44421)
               0.125 = fieldNorm(doc=513)
         0.08250957 = weight(abstract_txt:term in 513) [ClassicSimilarity], result of:
           0.08250957 = score(doc=513,freq=1.0), product of:
             0.13766758 = queryWeight, product of:
               2.08101 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.013797325 = queryNorm
             0.5993391 = fieldWeight in 513, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.125 = fieldNorm(doc=513)
         0.3021963 = weight(abstract_txt:weights in 513) [ClassicSimilarity], result of:
           0.3021963 = score(doc=513,freq=2.0), product of:
             0.2358841 = queryWeight, product of:
               2.3590562 = boost
               7.2471204 = idf(docFreq=85, maxDocs=44421)
               0.013797325 = queryNorm
             1.281122 = fieldWeight in 513, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.2471204 = idf(docFreq=85, maxDocs=44421)
               0.125 = fieldNorm(doc=513)
         0.44433984 = weight(abstract_txt:weighting in 513) [ClassicSimilarity], result of:
           0.44433984 = score(doc=513,freq=1.0), product of:
             0.50970435 = queryWeight, product of:
               5.29708 = boost
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.013797325 = queryNorm
             0.87175995 = fieldWeight in 513, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.125 = fieldNorm(doc=513)
       0.32 = coord(8/25)
   

2. Savoy, J.: Text representation strategies : an example with the State of the union addresses (2016) 0.32

   0.32209298 = sum of:
     0.32209298 = product of:
       0.7320295 = sum of:
         0.018310988 = weight(abstract_txt:proposed in 4042) [ClassicSimilarity], result of:
           0.018310988 = score(doc=4042,freq=1.0), product of:
             0.06357895 = queryWeight, product of:
               4.608063 = idf(docFreq=1203, maxDocs=44421)
               0.013797325 = queryNorm
             0.28800395 = fieldWeight in 4042, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.608063 = idf(docFreq=1203, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
         0.004950444 = weight(abstract_txt:that in 4042) [ClassicSimilarity], result of:
           0.004950444 = score(doc=4042,freq=1.0), product of:
             0.033492297 = queryWeight, product of:
               1.0264335 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.013797325 = queryNorm
             0.14780845 = fieldWeight in 4042, 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=4042)
         0.008232053 = weight(abstract_txt:with in 4042) [ClassicSimilarity], result of:
           0.008232053 = score(doc=4042,freq=2.0), product of:
             0.037311636 = queryWeight, product of:
               1.0833791 = boost
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.013797325 = queryNorm
             0.22062966 = fieldWeight in 4042, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
         0.030912062 = weight(abstract_txt:scheme in 4042) [ClassicSimilarity], result of:
           0.030912062 = score(doc=4042,freq=1.0), product of:
             0.09014136 = queryWeight, product of:
               1.1907084 = boost
               5.4868593 = idf(docFreq=499, maxDocs=44421)
               0.013797325 = queryNorm
             0.3429287 = fieldWeight in 4042, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4868593 = idf(docFreq=499, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
         0.03353191 = weight(abstract_txt:texts in 4042) [ClassicSimilarity], result of:
           0.03353191 = score(doc=4042,freq=1.0), product of:
             0.095165096 = queryWeight, product of:
               1.2234386 = boost
               5.6376824 = idf(docFreq=429, maxDocs=44421)
               0.013797325 = queryNorm
             0.35235515 = fieldWeight in 4042, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6376824 = idf(docFreq=429, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
         0.03677167 = weight(abstract_txt:topics in 4042) [ClassicSimilarity], result of:
           0.03677167 = score(doc=4042,freq=1.0), product of:
             0.11584522 = queryWeight, product of:
               1.65321 = boost
               5.078731 = idf(docFreq=751, maxDocs=44421)
               0.013797325 = queryNorm
             0.3174207 = fieldWeight in 4042, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.078731 = idf(docFreq=751, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
         0.04514213 = weight(abstract_txt:word in 4042) [ClassicSimilarity], result of:
           0.04514213 = score(doc=4042,freq=1.0), product of:
             0.1328181 = queryWeight, product of:
               1.7701807 = boost
               5.4380693 = idf(docFreq=524, maxDocs=44421)
               0.013797325 = queryNorm
             0.33987933 = fieldWeight in 4042, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4380693 = idf(docFreq=524, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
         0.10574896 = weight(abstract_txt:dirichlet in 4042) [ClassicSimilarity], result of:
           0.10574896 = score(doc=4042,freq=1.0), product of:
             0.20465524 = queryWeight, product of:
               1.7941335 = boost
               8.267481 = idf(docFreq=30, maxDocs=44421)
               0.013797325 = queryNorm
             0.51671755 = fieldWeight in 4042, 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=4042)
         0.08250957 = weight(abstract_txt:term in 4042) [ClassicSimilarity], result of:
           0.08250957 = score(doc=4042,freq=4.0), product of:
             0.13766758 = queryWeight, product of:
               2.08101 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.013797325 = queryNorm
             0.5993391 = fieldWeight in 4042, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
         0.22216992 = weight(abstract_txt:weighting in 4042) [ClassicSimilarity], result of:
           0.22216992 = score(doc=4042,freq=1.0), product of:
             0.50970435 = queryWeight, product of:
               5.29708 = boost
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.013797325 = queryNorm
             0.43587998 = fieldWeight in 4042, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
         0.14374976 = weight(abstract_txt:words in 4042) [ClassicSimilarity], result of:
           0.14374976 = score(doc=4042,freq=1.0), product of:
             0.42943776 = queryWeight, product of:
               5.811369 = boost
               5.355831 = idf(docFreq=569, maxDocs=44421)
               0.013797325 = queryNorm
             0.33473945 = fieldWeight in 4042, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.355831 = idf(docFreq=569, maxDocs=44421)
               0.0625 = fieldNorm(doc=4042)
       0.44 = coord(11/25)
   

3. Craven, T.C.: ¬A computer-aided abstracting tool kit (1993) 0.29

   0.2855392 = sum of:
     0.2855392 = product of:
       1.427696 = sum of:
         0.13256602 = weight(abstract_txt:weight in 6505) [ClassicSimilarity], result of:
           0.13256602 = score(doc=6505,freq=1.0), product of:
             0.16384566 = queryWeight, product of:
               1.605317 = boost
               7.3974023 = idf(docFreq=73, maxDocs=44421)
               0.013797325 = queryNorm
             0.80909085 = fieldWeight in 6505, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.3974023 = idf(docFreq=73, maxDocs=44421)
               0.109375 = fieldNorm(doc=6505)
         0.07899873 = weight(abstract_txt:word in 6505) [ClassicSimilarity], result of:
           0.07899873 = score(doc=6505,freq=1.0), product of:
             0.1328181 = queryWeight, product of:
               1.7701807 = boost
               5.4380693 = idf(docFreq=524, maxDocs=44421)
               0.013797325 = queryNorm
             0.59478885 = fieldWeight in 6505, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4380693 = idf(docFreq=524, maxDocs=44421)
               0.109375 = fieldNorm(doc=6505)
         0.18697442 = weight(abstract_txt:weights in 6505) [ClassicSimilarity], result of:
           0.18697442 = score(doc=6505,freq=1.0), product of:
             0.2358841 = queryWeight, product of:
               2.3590562 = boost
               7.2471204 = idf(docFreq=85, maxDocs=44421)
               0.013797325 = queryNorm
             0.7926538 = fieldWeight in 6505, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2471204 = idf(docFreq=85, maxDocs=44421)
               0.109375 = fieldNorm(doc=6505)
         0.77759475 = weight(abstract_txt:weighting in 6505) [ClassicSimilarity], result of:
           0.77759475 = score(doc=6505,freq=4.0), product of:
             0.50970435 = queryWeight, product of:
               5.29708 = boost
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.013797325 = queryNorm
             1.5255799 = fieldWeight in 6505, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.109375 = fieldNorm(doc=6505)
         0.2515621 = weight(abstract_txt:words in 6505) [ClassicSimilarity], result of:
           0.2515621 = score(doc=6505,freq=1.0), product of:
             0.42943776 = queryWeight, product of:
               5.811369 = boost
               5.355831 = idf(docFreq=569, maxDocs=44421)
               0.013797325 = queryNorm
             0.58579403 = fieldWeight in 6505, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.355831 = idf(docFreq=569, maxDocs=44421)
               0.109375 = fieldNorm(doc=6505)
       0.2 = coord(5/25)
   

4. Ko, Y.: ¬A new term-weighting scheme for text classification using the odds of positive and negative class probabilities (2015) 0.27

   0.27486125 = sum of:
     0.27486125 = product of:
       0.98164725 = sum of:
         0.022888735 = weight(abstract_txt:proposed in 3339) [ClassicSimilarity], result of:
           0.022888735 = score(doc=3339,freq=1.0), product of:
             0.06357895 = queryWeight, product of:
               4.608063 = idf(docFreq=1203, maxDocs=44421)
               0.013797325 = queryNorm
             0.36000493 = fieldWeight in 3339, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.608063 = idf(docFreq=1203, maxDocs=44421)
               0.078125 = fieldNorm(doc=3339)
         0.008751233 = weight(abstract_txt:that in 3339) [ClassicSimilarity], result of:
           0.008751233 = score(doc=3339,freq=2.0), product of:
             0.033492297 = queryWeight, product of:
               1.0264335 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.013797325 = queryNorm
             0.2612909 = fieldWeight in 3339, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.078125 = fieldNorm(doc=3339)
         0.054645322 = weight(abstract_txt:scheme in 3339) [ClassicSimilarity], result of:
           0.054645322 = score(doc=3339,freq=2.0), product of:
             0.09014136 = queryWeight, product of:
               1.1907084 = boost
               5.4868593 = idf(docFreq=499, maxDocs=44421)
               0.013797325 = queryNorm
             0.60621804 = fieldWeight in 3339, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4868593 = idf(docFreq=499, maxDocs=44421)
               0.078125 = fieldNorm(doc=3339)
         0.09469002 = weight(abstract_txt:weight in 3339) [ClassicSimilarity], result of:
           0.09469002 = score(doc=3339,freq=1.0), product of:
             0.16384566 = queryWeight, product of:
               1.605317 = boost
               7.3974023 = idf(docFreq=73, maxDocs=44421)
               0.013797325 = queryNorm
             0.57792205 = fieldWeight in 3339, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.3974023 = idf(docFreq=73, maxDocs=44421)
               0.078125 = fieldNorm(doc=3339)
         0.11893063 = weight(abstract_txt:schemes in 3339) [ClassicSimilarity], result of:
           0.11893063 = score(doc=3339,freq=4.0), product of:
             0.13754296 = queryWeight, product of:
               1.8013917 = boost
               5.5339513 = idf(docFreq=476, maxDocs=44421)
               0.013797325 = queryNorm
             0.8646799 = fieldWeight in 3339, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.5339513 = idf(docFreq=476, maxDocs=44421)
               0.078125 = fieldNorm(doc=3339)
         0.12631647 = weight(abstract_txt:term in 3339) [ClassicSimilarity], result of:
           0.12631647 = score(doc=3339,freq=6.0), product of:
             0.13766758 = queryWeight, product of:
               2.08101 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.013797325 = queryNorm
             0.917547 = fieldWeight in 3339, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.078125 = fieldNorm(doc=3339)
         0.5554248 = weight(abstract_txt:weighting in 3339) [ClassicSimilarity], result of:
           0.5554248 = score(doc=3339,freq=4.0), product of:
             0.50970435 = queryWeight, product of:
               5.29708 = boost
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.013797325 = queryNorm
             1.0897 = fieldWeight in 3339, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.078125 = fieldNorm(doc=3339)
       0.28 = coord(7/25)
   

5. Abu-Salem, H.; Al-Omari, M.; Evens, M.W.: Stemming methodologies over individual query words for an Arabic information retrieval system (1999) 0.26

   0.25556737 = sum of:
     0.25556737 = product of:
       0.91274065 = sum of:
         0.018310988 = weight(abstract_txt:proposed in 4672) [ClassicSimilarity], result of:
           0.018310988 = score(doc=4672,freq=1.0), product of:
             0.06357895 = queryWeight, product of:
               4.608063 = idf(docFreq=1203, maxDocs=44421)
               0.013797325 = queryNorm
             0.28800395 = fieldWeight in 4672, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.608063 = idf(docFreq=1203, maxDocs=44421)
               0.0625 = fieldNorm(doc=4672)
         0.008574421 = weight(abstract_txt:that in 4672) [ClassicSimilarity], result of:
           0.008574421 = score(doc=4672,freq=3.0), product of:
             0.033492297 = queryWeight, product of:
               1.0264335 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.013797325 = queryNorm
             0.25601172 = fieldWeight in 4672, 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=4672)
         0.07571878 = weight(abstract_txt:scheme in 4672) [ClassicSimilarity], result of:
           0.07571878 = score(doc=4672,freq=6.0), product of:
             0.09014136 = queryWeight, product of:
               1.1907084 = boost
               5.4868593 = idf(docFreq=499, maxDocs=44421)
               0.013797325 = queryNorm
             0.8400004 = fieldWeight in 4672, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.4868593 = idf(docFreq=499, maxDocs=44421)
               0.0625 = fieldNorm(doc=4672)
         0.06384061 = weight(abstract_txt:word in 4672) [ClassicSimilarity], result of:
           0.06384061 = score(doc=4672,freq=2.0), product of:
             0.1328181 = queryWeight, product of:
               1.7701807 = boost
               5.4380693 = idf(docFreq=524, maxDocs=44421)
               0.013797325 = queryNorm
             0.48066196 = fieldWeight in 4672, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4380693 = idf(docFreq=524, maxDocs=44421)
               0.0625 = fieldNorm(doc=4672)
         0.05834307 = weight(abstract_txt:term in 4672) [ClassicSimilarity], result of:
           0.05834307 = score(doc=4672,freq=2.0), product of:
             0.13766758 = queryWeight, product of:
               2.08101 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.013797325 = queryNorm
             0.42379674 = fieldWeight in 4672, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.0625 = fieldNorm(doc=4672)
         0.544203 = weight(abstract_txt:weighting in 4672) [ClassicSimilarity], result of:
           0.544203 = score(doc=4672,freq=6.0), product of:
             0.50970435 = queryWeight, product of:
               5.29708 = boost
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.013797325 = queryNorm
             1.0676836 = fieldWeight in 4672, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.0625 = fieldNorm(doc=4672)
         0.14374976 = weight(abstract_txt:words in 4672) [ClassicSimilarity], result of:
           0.14374976 = score(doc=4672,freq=1.0), product of:
             0.42943776 = queryWeight, product of:
               5.811369 = boost
               5.355831 = idf(docFreq=569, maxDocs=44421)
               0.013797325 = queryNorm
             0.33473945 = fieldWeight in 4672, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.355831 = idf(docFreq=569, maxDocs=44421)
               0.0625 = fieldNorm(doc=4672)
       0.28 = coord(7/25)