Document (#40541)

Author
Varathan, K.D.
Giachanou, A.
Crestani, F.
Title
Comparative opinion mining : a review
Source
Journal of the Association for Information Science and Technology. 68(2017) no.4, S.811-829
Year
2017
Series
Review
Abstract
Opinion mining refers to the use of natural language processing, text analysis, and computational linguistics to identify and extract subjective information in textual material. Opinion mining, also known as sentiment analysis, has received a lot of attention in recent times, as it provides a number of tools to analyze public opinion on a number of different topics. Comparative opinion mining is a subfield of opinion mining which deals with identifying and extracting information that is expressed in a comparative form (e.g., "paper X is better than the Y"). Comparative opinion mining plays a very important role when one tries to evaluate something because it provides a reference point for the comparison. This paper provides a review of the area of comparative opinion mining. It is the first review that cover specifically this topic as all previous reviews dealt mostly with general opinion mining. This survey covers comparative opinion mining from two different angles. One from the perspective of techniques and the other from the perspective of comparative opinion elements. It also incorporates preprocessing tools as well as data set that were used by past researchers that can be useful to future researchers in the field of comparative opinion mining.
Content
Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23716/full.
Theme
Data Mining
Field
Kommunikationswissenschaften

Similar documents (author)

  1. Crestani, F.: Combination of similarity measures for effective spoken document retrieval (2003) 5.44
    5.438222 = sum of:
      5.438222 = weight(author_txt:crestani in 4690) [ClassicSimilarity], result of:
        5.438222 = fieldWeight in 4690, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.701155 = idf(docFreq=19, maxDocs=44218)
          0.625 = fieldNorm(doc=4690)
    
  2. Crestani, F.; Lee, P.L.: Searching the web by constraining spreading activities (2000) 4.35
    4.3505774 = sum of:
      4.3505774 = weight(author_txt:crestani in 1326) [ClassicSimilarity], result of:
        4.3505774 = fieldWeight in 1326, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.701155 = idf(docFreq=19, maxDocs=44218)
          0.5 = fieldNorm(doc=1326)
    
  3. Tombros, T.; Crestani, F.: Users' perception of relevance of spoken documents (2000) 4.35
    4.3505774 = sum of:
      4.3505774 = weight(author_txt:crestani in 4996) [ClassicSimilarity], result of:
        4.3505774 = fieldWeight in 4996, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.701155 = idf(docFreq=19, maxDocs=44218)
          0.5 = fieldNorm(doc=4996)
    
  4. Crestani, F.; Du, H.: Written versus spoken queries : a qualitative and quantitative comparative analysis (2006) 4.35
    4.3505774 = sum of:
      4.3505774 = weight(author_txt:crestani in 5047) [ClassicSimilarity], result of:
        4.3505774 = fieldWeight in 5047, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.701155 = idf(docFreq=19, maxDocs=44218)
          0.5 = fieldNorm(doc=5047)
    
  5. Crestani, F.; Wu, S.: Testing the cluster hypothesis in distributed information retrieval (2006) 4.35
    4.3505774 = sum of:
      4.3505774 = weight(author_txt:crestani in 984) [ClassicSimilarity], result of:
        4.3505774 = fieldWeight in 984, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.701155 = idf(docFreq=19, maxDocs=44218)
          0.5 = fieldNorm(doc=984)
    

Similar documents (content)

  1. Belbachir, F.; Boughanem, M.: Using language models to improve opinion detection (2018) 0.42
    0.41577744 = sum of:
      0.41577744 = product of:
        1.1549373 = sum of:
          0.0057407487 = weight(abstract_txt:paper in 5044) [ClassicSimilarity], result of:
            0.0057407487 = score(doc=5044,freq=1.0), product of:
              0.030274678 = queryWeight, product of:
                1.0000056 = boost
                3.467376 = idf(docFreq=3749, maxDocs=44218)
                0.008731245 = queryNorm
              0.18962212 = fieldWeight in 5044, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.467376 = idf(docFreq=3749, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5044)
          0.0041044354 = weight(abstract_txt:this in 5044) [ClassicSimilarity], result of:
            0.0041044354 = score(doc=5044,freq=2.0), product of:
              0.021993274 = queryWeight, product of:
                1.0438864 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.008731245 = queryNorm
              0.1866223 = fieldWeight in 5044, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5044)
          0.009497824 = weight(abstract_txt:analysis in 5044) [ClassicSimilarity], result of:
            0.009497824 = score(doc=5044,freq=2.0), product of:
              0.033612948 = queryWeight, product of:
                1.0536975 = boost
                3.6535451 = idf(docFreq=3112, maxDocs=44218)
                0.008731245 = queryNorm
              0.28256446 = fieldWeight in 5044, 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=5044)
          0.013564258 = weight(abstract_txt:different in 5044) [ClassicSimilarity], result of:
            0.013564258 = score(doc=5044,freq=4.0), product of:
              0.033833314 = queryWeight, product of:
                1.0571458 = boost
                3.6655018 = idf(docFreq=3075, maxDocs=44218)
                0.008731245 = queryNorm
              0.40091425 = fieldWeight in 5044, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6655018 = idf(docFreq=3075, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5044)
          0.0043612984 = weight(abstract_txt:from in 5044) [ClassicSimilarity], result of:
            0.0043612984 = score(doc=5044,freq=1.0), product of:
              0.02885414 = queryWeight, product of:
                1.1956728 = boost
                2.7638826 = idf(docFreq=7577, maxDocs=44218)
                0.008731245 = queryNorm
              0.15114984 = fieldWeight in 5044, 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=5044)
          0.005181639 = weight(abstract_txt:that in 5044) [ClassicSimilarity], result of:
            0.005181639 = score(doc=5044,freq=2.0), product of:
              0.028275609 = queryWeight, product of:
                1.3667328 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.008731245 = queryNorm
              0.18325473 = fieldWeight in 5044, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5044)
          0.019586464 = weight(abstract_txt:perspective in 5044) [ClassicSimilarity], result of:
            0.019586464 = score(doc=5044,freq=1.0), product of:
              0.0686127 = queryWeight, product of:
                1.505445 = boost
                5.219915 = idf(docFreq=649, maxDocs=44218)
                0.008731245 = queryNorm
              0.2854641 = fieldWeight in 5044, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.219915 = idf(docFreq=649, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5044)
          0.16215731 = weight(abstract_txt:mining in 5044) [ClassicSimilarity], result of:
            0.16215731 = score(doc=5044,freq=1.0), product of:
              0.48015508 = queryWeight, product of:
                8.905092 = boost
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.008731245 = queryNorm
              0.33771864 = fieldWeight in 5044, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5044)
          0.93074334 = weight(abstract_txt:opinion in 5044) [ClassicSimilarity], result of:
            0.93074334 = score(doc=5044,freq=12.0), product of:
              0.7144587 = queryWeight, product of:
                11.899448 = boost
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.008731245 = queryNorm
              1.3027252 = fieldWeight in 5044, product of:
                3.4641016 = tf(freq=12.0), with freq of:
                  12.0 = termFreq=12.0
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.0546875 = fieldNorm(doc=5044)
        0.36 = coord(9/25)
    
  2. Bi, Y.: Sentiment classification in social media data by combining triplet belief functions (2022) 0.39
    0.39453363 = sum of:
      0.39453363 = product of:
        0.9863341 = sum of:
          0.008201069 = weight(abstract_txt:paper in 613) [ClassicSimilarity], result of:
            0.008201069 = score(doc=613,freq=1.0), product of:
              0.030274678 = queryWeight, product of:
                1.0000056 = boost
                3.467376 = idf(docFreq=3749, maxDocs=44218)
                0.008731245 = queryNorm
              0.27088875 = fieldWeight in 613, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.467376 = idf(docFreq=3749, maxDocs=44218)
                0.078125 = fieldNorm(doc=613)
          0.0041461056 = weight(abstract_txt:this in 613) [ClassicSimilarity], result of:
            0.0041461056 = score(doc=613,freq=1.0), product of:
              0.021993274 = queryWeight, product of:
                1.0438864 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.008731245 = queryNorm
              0.18851699 = fieldWeight in 613, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.078125 = fieldNorm(doc=613)
          0.009594251 = weight(abstract_txt:analysis in 613) [ClassicSimilarity], result of:
            0.009594251 = score(doc=613,freq=1.0), product of:
              0.033612948 = queryWeight, product of:
                1.0536975 = boost
                3.6535451 = idf(docFreq=3112, maxDocs=44218)
                0.008731245 = queryNorm
              0.2854332 = fieldWeight in 613, 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=613)
          0.09480055 = weight(abstract_txt:sentiment in 613) [ClassicSimilarity], result of:
            0.09480055 = score(doc=613,freq=5.0), product of:
              0.07184112 = queryWeight, product of:
                1.0892667 = boost
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.008731245 = queryNorm
              1.3195862 = fieldWeight in 613, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.078125 = fieldNorm(doc=613)
          0.006230426 = weight(abstract_txt:from in 613) [ClassicSimilarity], result of:
            0.006230426 = score(doc=613,freq=1.0), product of:
              0.02885414 = queryWeight, product of:
                1.1956728 = boost
                2.7638826 = idf(docFreq=7577, maxDocs=44218)
                0.008731245 = queryNorm
              0.21592833 = fieldWeight in 613, 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=613)
          0.007402342 = weight(abstract_txt:that in 613) [ClassicSimilarity], result of:
            0.007402342 = score(doc=613,freq=2.0), product of:
              0.028275609 = queryWeight, product of:
                1.3667328 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.008731245 = queryNorm
              0.26179248 = fieldWeight in 613, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.078125 = fieldNorm(doc=613)
          0.033842366 = weight(abstract_txt:review in 613) [ClassicSimilarity], result of:
            0.033842366 = score(doc=613,freq=1.0), product of:
              0.08916 = queryWeight, product of:
                2.1018093 = boost
                4.858482 = idf(docFreq=932, maxDocs=44218)
                0.008731245 = queryNorm
              0.3795689 = fieldWeight in 613, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.858482 = idf(docFreq=932, maxDocs=44218)
                0.078125 = fieldNorm(doc=613)
          0.2066316 = weight(abstract_txt:comparative in 613) [ClassicSimilarity], result of:
            0.2066316 = score(doc=613,freq=1.0), product of:
              0.413032 = queryWeight, product of:
                7.3872786 = boost
                6.4035826 = idf(docFreq=198, maxDocs=44218)
                0.008731245 = queryNorm
              0.5002799 = fieldWeight in 613, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.4035826 = idf(docFreq=198, maxDocs=44218)
                0.078125 = fieldNorm(doc=613)
          0.23165332 = weight(abstract_txt:mining in 613) [ClassicSimilarity], result of:
            0.23165332 = score(doc=613,freq=1.0), product of:
              0.48015508 = queryWeight, product of:
                8.905092 = boost
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.008731245 = queryNorm
              0.4824552 = fieldWeight in 613, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.078125 = fieldNorm(doc=613)
          0.38383207 = weight(abstract_txt:opinion in 613) [ClassicSimilarity], result of:
            0.38383207 = score(doc=613,freq=1.0), product of:
              0.7144587 = queryWeight, product of:
                11.899448 = boost
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.008731245 = queryNorm
              0.5372348 = fieldWeight in 613, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.078125 = fieldNorm(doc=613)
        0.4 = coord(10/25)
    
  3. Miao, Q.; Li, Q.; Zeng, D.: Fine-grained opinion mining by integrating multiple review sources (2010) 0.32
    0.32485756 = sum of:
      0.32485756 = product of:
        1.1602056 = sum of:
          0.0049753273 = weight(abstract_txt:this in 4104) [ClassicSimilarity], result of:
            0.0049753273 = score(doc=4104,freq=1.0), product of:
              0.021993274 = queryWeight, product of:
                1.0438864 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.008731245 = queryNorm
              0.2262204 = fieldWeight in 4104, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.09375 = fieldNorm(doc=4104)
          0.050875314 = weight(abstract_txt:sentiment in 4104) [ClassicSimilarity], result of:
            0.050875314 = score(doc=4104,freq=1.0), product of:
              0.07184112 = queryWeight, product of:
                1.0892667 = boost
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.008731245 = queryNorm
              0.7081643 = fieldWeight in 4104, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.09375 = fieldNorm(doc=4104)
          0.012949697 = weight(abstract_txt:from in 4104) [ClassicSimilarity], result of:
            0.012949697 = score(doc=4104,freq=3.0), product of:
              0.02885414 = queryWeight, product of:
                1.1956728 = boost
                2.7638826 = idf(docFreq=7577, maxDocs=44218)
                0.008731245 = queryNorm
              0.4487986 = fieldWeight in 4104, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.7638826 = idf(docFreq=7577, maxDocs=44218)
                0.09375 = fieldNorm(doc=4104)
          0.006281095 = weight(abstract_txt:that in 4104) [ClassicSimilarity], result of:
            0.006281095 = score(doc=4104,freq=1.0), product of:
              0.028275609 = queryWeight, product of:
                1.3667328 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.008731245 = queryNorm
              0.22213829 = fieldWeight in 4104, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.09375 = fieldNorm(doc=4104)
          0.040610835 = weight(abstract_txt:review in 4104) [ClassicSimilarity], result of:
            0.040610835 = score(doc=4104,freq=1.0), product of:
              0.08916 = queryWeight, product of:
                2.1018093 = boost
                4.858482 = idf(docFreq=932, maxDocs=44218)
                0.008731245 = queryNorm
              0.45548266 = fieldWeight in 4104, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.858482 = idf(docFreq=932, maxDocs=44218)
                0.09375 = fieldNorm(doc=4104)
          0.3931287 = weight(abstract_txt:mining in 4104) [ClassicSimilarity], result of:
            0.3931287 = score(doc=4104,freq=2.0), product of:
              0.48015508 = queryWeight, product of:
                8.905092 = boost
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.008731245 = queryNorm
              0.8187536 = fieldWeight in 4104, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.09375 = fieldNorm(doc=4104)
          0.65138465 = weight(abstract_txt:opinion in 4104) [ClassicSimilarity], result of:
            0.65138465 = score(doc=4104,freq=2.0), product of:
              0.7144587 = queryWeight, product of:
                11.899448 = boost
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.008731245 = queryNorm
              0.9117177 = fieldWeight in 4104, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.09375 = fieldNorm(doc=4104)
        0.28 = coord(7/25)
    
  4. Pang, B.; Lee, L.: Opinion mining and sentiment analysis (2008) 0.32
    0.32350937 = sum of:
      0.32350937 = product of:
        1.1553906 = sum of:
          0.0029022743 = weight(abstract_txt:this in 1171) [ClassicSimilarity], result of:
            0.0029022743 = score(doc=1171,freq=1.0), product of:
              0.021993274 = queryWeight, product of:
                1.0438864 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.008731245 = queryNorm
              0.1319619 = fieldWeight in 1171, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1171)
          0.013431952 = weight(abstract_txt:analysis in 1171) [ClassicSimilarity], result of:
            0.013431952 = score(doc=1171,freq=4.0), product of:
              0.033612948 = queryWeight, product of:
                1.0536975 = boost
                3.6535451 = idf(docFreq=3112, maxDocs=44218)
                0.008731245 = queryNorm
              0.3996065 = fieldWeight in 1171, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6535451 = idf(docFreq=3112, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1171)
          0.066360384 = weight(abstract_txt:sentiment in 1171) [ClassicSimilarity], result of:
            0.066360384 = score(doc=1171,freq=5.0), product of:
              0.07184112 = queryWeight, product of:
                1.0892667 = boost
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.008731245 = queryNorm
              0.92371035 = fieldWeight in 1171, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1171)
          0.008192891 = weight(abstract_txt:that in 1171) [ClassicSimilarity], result of:
            0.008192891 = score(doc=1171,freq=5.0), product of:
              0.028275609 = queryWeight, product of:
                1.3667328 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.008731245 = queryNorm
              0.28975117 = fieldWeight in 1171, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1171)
          0.023689654 = weight(abstract_txt:review in 1171) [ClassicSimilarity], result of:
            0.023689654 = score(doc=1171,freq=1.0), product of:
              0.08916 = queryWeight, product of:
                2.1018093 = boost
                4.858482 = idf(docFreq=932, maxDocs=44218)
                0.008731245 = queryNorm
              0.26569822 = fieldWeight in 1171, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.858482 = idf(docFreq=932, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1171)
          0.28086472 = weight(abstract_txt:mining in 1171) [ClassicSimilarity], result of:
            0.28086472 = score(doc=1171,freq=3.0), product of:
              0.48015508 = queryWeight, product of:
                8.905092 = boost
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.008731245 = queryNorm
              0.58494586 = fieldWeight in 1171, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1171)
          0.75994873 = weight(abstract_txt:opinion in 1171) [ClassicSimilarity], result of:
            0.75994873 = score(doc=1171,freq=8.0), product of:
              0.7144587 = queryWeight, product of:
                11.899448 = boost
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.008731245 = queryNorm
              1.0636706 = fieldWeight in 1171, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.0546875 = fieldNorm(doc=1171)
        0.28 = coord(7/25)
    
  5. Huang, H.-H.; Wang, J.-J.; Chen, H.-H.: Implicit opinion analysis : extraction and polarity labelling (2017) 0.28
    0.27671257 = sum of:
      0.27671257 = product of:
        1.152969 = sum of:
          0.009841284 = weight(abstract_txt:paper in 3820) [ClassicSimilarity], result of:
            0.009841284 = score(doc=3820,freq=1.0), product of:
              0.030274678 = queryWeight, product of:
                1.0000056 = boost
                3.467376 = idf(docFreq=3749, maxDocs=44218)
                0.008731245 = queryNorm
              0.3250665 = fieldWeight in 3820, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.467376 = idf(docFreq=3749, maxDocs=44218)
                0.09375 = fieldNorm(doc=3820)
          0.0049753273 = weight(abstract_txt:this in 3820) [ClassicSimilarity], result of:
            0.0049753273 = score(doc=3820,freq=1.0), product of:
              0.021993274 = queryWeight, product of:
                1.0438864 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.008731245 = queryNorm
              0.2262204 = fieldWeight in 3820, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.09375 = fieldNorm(doc=3820)
          0.011513102 = weight(abstract_txt:analysis in 3820) [ClassicSimilarity], result of:
            0.011513102 = score(doc=3820,freq=1.0), product of:
              0.033612948 = queryWeight, product of:
                1.0536975 = boost
                3.6535451 = idf(docFreq=3112, maxDocs=44218)
                0.008731245 = queryNorm
              0.34251985 = fieldWeight in 3820, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6535451 = idf(docFreq=3112, maxDocs=44218)
                0.09375 = fieldNorm(doc=3820)
          0.050875314 = weight(abstract_txt:sentiment in 3820) [ClassicSimilarity], result of:
            0.050875314 = score(doc=3820,freq=1.0), product of:
              0.07184112 = queryWeight, product of:
                1.0892667 = boost
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.008731245 = queryNorm
              0.7081643 = fieldWeight in 3820, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5537524 = idf(docFreq=62, maxDocs=44218)
                0.09375 = fieldNorm(doc=3820)
          0.27798396 = weight(abstract_txt:mining in 3820) [ClassicSimilarity], result of:
            0.27798396 = score(doc=3820,freq=1.0), product of:
              0.48015508 = queryWeight, product of:
                8.905092 = boost
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.008731245 = queryNorm
              0.57894623 = fieldWeight in 3820, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1754265 = idf(docFreq=249, maxDocs=44218)
                0.09375 = fieldNorm(doc=3820)
          0.79778004 = weight(abstract_txt:opinion in 3820) [ClassicSimilarity], result of:
            0.79778004 = score(doc=3820,freq=3.0), product of:
              0.7144587 = queryWeight, product of:
                11.899448 = boost
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.008731245 = queryNorm
              1.1166216 = fieldWeight in 3820, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.8766055 = idf(docFreq=123, maxDocs=44218)
                0.09375 = fieldNorm(doc=3820)
        0.24 = coord(6/25)