Document (#28456)

Author
Radev, D.
Fan, W.
Qu, H.
Wu, H.
Grewal, A.
Title
Probabilistic question answering on the Web
Source
Journal of the American Society for Information Science and Technology. 56(2005) no.6, S.571-583
Year
2005
Abstract
Web-based search engines such as Google and NorthernLight return documents that are relevant to a user query, not answers to user questions. We have developed an architecture that augments existing search engines so that they support natural language question answering. The process entails five steps: query modulation, document retrieval, passage extraction, phrase extraction, and answer ranking. In this article, we describe some probabilistic approaches to the last three of these stages. We show how our techniques apply to a number of existing search engines, and we also present results contrasting three different methods for question answering. Our algorithm, probabilistic phrase reranking (PPR), uses proximity and question type features and achieves a total reciprocal document rank of .20 an the TREC8 corpus. Our techniques have been implemented as a Web-accessible system, called NSIR.
Theme
Suchmaschinen
Retrievalalgorithmen
Computerlinguistik
Sprachretrieval
Object
NSIR

Similar documents (author)

  1. Otterbacher, J.; Radev, D.: Exploring fact-focused relevance and novelty detection (2008) 4.57
    4.565969 = sum of:
      4.565969 = weight(author_txt:radev in 2210) [ClassicSimilarity], result of:
        4.565969 = fieldWeight in 2210, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.131938 = idf(docFreq=12, maxDocs=44218)
          0.5 = fieldNorm(doc=2210)
    
  2. Finegan-Dollak, C.; Radev, D.R.: Sentence simplification, compression, and disaggregation for summarization of sophisticated documents (2016) 4.00
    3.9952228 = sum of:
      3.9952228 = weight(author_txt:radev in 3122) [ClassicSimilarity], result of:
        3.9952228 = fieldWeight in 3122, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.131938 = idf(docFreq=12, maxDocs=44218)
          0.4375 = fieldNorm(doc=3122)
    
  3. Radev, D.R.; Libner, K.; Fan, W.: Getting answers to natural language questions on the Web (2002) 3.42
    3.4244766 = sum of:
      3.4244766 = weight(author_txt:radev in 5204) [ClassicSimilarity], result of:
        3.4244766 = fieldWeight in 5204, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.131938 = idf(docFreq=12, maxDocs=44218)
          0.375 = fieldNorm(doc=5204)
    
  4. Otterbacher, J.; Radev, D.; Kareem, O.: Hierarchical summarization for delivering information to mobile devices (2008) 3.42
    3.4244766 = sum of:
      3.4244766 = weight(author_txt:radev in 2071) [ClassicSimilarity], result of:
        3.4244766 = fieldWeight in 2071, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.131938 = idf(docFreq=12, maxDocs=44218)
          0.375 = fieldNorm(doc=2071)
    
  5. Otterbacher, J.; Erkan, G.; Radev, D.R.: Biased LexRank : passage retrieval using random walks with question-based priors (2009) 3.42
    3.4244766 = sum of:
      3.4244766 = weight(author_txt:radev in 2450) [ClassicSimilarity], result of:
        3.4244766 = fieldWeight in 2450, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.131938 = idf(docFreq=12, maxDocs=44218)
          0.375 = fieldNorm(doc=2450)
    

Similar documents (content)

  1. Lin, J.; Katz, B.: Building a reusable test collection for question answering (2006) 0.23
    0.22750796 = sum of:
      0.22750796 = product of:
        0.81252843 = sum of:
          0.014508331 = weight(abstract_txt:that in 5045) [ClassicSimilarity], result of:
            0.014508331 = score(doc=5045,freq=3.0), product of:
              0.045249593 = queryWeight, product of:
                1.1065612 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.017257866 = queryNorm
              0.320629 = fieldWeight in 5045, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.078125 = fieldNorm(doc=5045)
          0.07973553 = weight(abstract_txt:return in 5045) [ClassicSimilarity], result of:
            0.07973553 = score(doc=5045,freq=1.0), product of:
              0.14091946 = queryWeight, product of:
                1.1274388 = boost
                7.24254 = idf(docFreq=85, maxDocs=44218)
                0.017257866 = queryNorm
              0.56582344 = fieldWeight in 5045, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.24254 = idf(docFreq=85, maxDocs=44218)
                0.078125 = fieldNorm(doc=5045)
          0.020980064 = weight(abstract_txt:user in 5045) [ClassicSimilarity], result of:
            0.020980064 = score(doc=5045,freq=1.0), product of:
              0.07290392 = queryWeight, product of:
                1.1468271 = boost
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.017257866 = queryNorm
              0.2877769 = fieldWeight in 5045, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.078125 = fieldNorm(doc=5045)
          0.04695566 = weight(abstract_txt:document in 5045) [ClassicSimilarity], result of:
            0.04695566 = score(doc=5045,freq=2.0), product of:
              0.099006034 = queryWeight, product of:
                1.3364519 = boost
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.017257866 = queryNorm
              0.4742707 = fieldWeight in 5045, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.078125 = fieldNorm(doc=5045)
          0.0390176 = weight(abstract_txt:techniques in 5045) [ClassicSimilarity], result of:
            0.0390176 = score(doc=5045,freq=1.0), product of:
              0.11025206 = queryWeight, product of:
                1.4103141 = boost
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.017257866 = queryNorm
              0.3538945 = fieldWeight in 5045, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.078125 = fieldNorm(doc=5045)
          0.37419248 = weight(abstract_txt:answering in 5045) [ClassicSimilarity], result of:
            0.37419248 = score(doc=5045,freq=4.0), product of:
              0.3588835 = queryWeight, product of:
                3.1163402 = boost
                6.6730065 = idf(docFreq=151, maxDocs=44218)
                0.017257866 = queryNorm
              1.0426573 = fieldWeight in 5045, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.6730065 = idf(docFreq=151, maxDocs=44218)
                0.078125 = fieldNorm(doc=5045)
          0.23713876 = weight(abstract_txt:question in 5045) [ClassicSimilarity], result of:
            0.23713876 = score(doc=5045,freq=4.0), product of:
              0.29143256 = queryWeight, product of:
                3.2426982 = boost
                5.207682 = idf(docFreq=657, maxDocs=44218)
                0.017257866 = queryNorm
              0.8137003 = fieldWeight in 5045, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.207682 = idf(docFreq=657, maxDocs=44218)
                0.078125 = fieldNorm(doc=5045)
        0.28 = coord(7/25)
    
  2. Habernal, I.; Konopík, M.; Rohlík, O.: Question answering (2012) 0.21
    0.2092063 = sum of:
      0.2092063 = product of:
        0.87169296 = sum of:
          0.00837639 = weight(abstract_txt:that in 101) [ClassicSimilarity], result of:
            0.00837639 = score(doc=101,freq=1.0), product of:
              0.045249593 = queryWeight, product of:
                1.1065612 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.017257866 = queryNorm
              0.18511525 = fieldWeight in 101, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.078125 = fieldNorm(doc=101)
          0.055179212 = weight(abstract_txt:techniques in 101) [ClassicSimilarity], result of:
            0.055179212 = score(doc=101,freq=2.0), product of:
              0.11025206 = queryWeight, product of:
                1.4103141 = boost
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.017257866 = queryNorm
              0.5004824 = fieldWeight in 101, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.078125 = fieldNorm(doc=101)
          0.030821247 = weight(abstract_txt:search in 101) [ClassicSimilarity], result of:
            0.030821247 = score(doc=101,freq=1.0), product of:
              0.10784754 = queryWeight, product of:
                1.7083358 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017257866 = queryNorm
              0.28578535 = fieldWeight in 101, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.078125 = fieldNorm(doc=101)
          0.09382696 = weight(abstract_txt:engines in 101) [ClassicSimilarity], result of:
            0.09382696 = score(doc=101,freq=1.0), product of:
              0.22653146 = queryWeight, product of:
                2.475896 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.017257866 = queryNorm
              0.41418952 = fieldWeight in 101, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.078125 = fieldNorm(doc=101)
          0.41835994 = weight(abstract_txt:answering in 101) [ClassicSimilarity], result of:
            0.41835994 = score(doc=101,freq=5.0), product of:
              0.3588835 = queryWeight, product of:
                3.1163402 = boost
                6.6730065 = idf(docFreq=151, maxDocs=44218)
                0.017257866 = queryNorm
              1.1657263 = fieldWeight in 101, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.6730065 = idf(docFreq=151, maxDocs=44218)
                0.078125 = fieldNorm(doc=101)
          0.2651292 = weight(abstract_txt:question in 101) [ClassicSimilarity], result of:
            0.2651292 = score(doc=101,freq=5.0), product of:
              0.29143256 = queryWeight, product of:
                3.2426982 = boost
                5.207682 = idf(docFreq=657, maxDocs=44218)
                0.017257866 = queryNorm
              0.9097446 = fieldWeight in 101, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.207682 = idf(docFreq=657, maxDocs=44218)
                0.078125 = fieldNorm(doc=101)
        0.24 = coord(6/25)
    
  3. Hammache, A.; Boughanem, M.: Term position-based language model for information retrieval (2021) 0.19
    0.19323327 = sum of:
      0.19323327 = product of:
        0.48308316 = sum of:
          0.04451055 = weight(abstract_txt:rank in 216) [ClassicSimilarity], result of:
            0.04451055 = score(doc=216,freq=1.0), product of:
              0.11086259 = queryWeight, product of:
                6.4238877 = idf(docFreq=194, maxDocs=44218)
                0.017257866 = queryNorm
              0.40149298 = fieldWeight in 216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.4238877 = idf(docFreq=194, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.0067011113 = weight(abstract_txt:that in 216) [ClassicSimilarity], result of:
            0.0067011113 = score(doc=216,freq=1.0), product of:
              0.045249593 = queryWeight, product of:
                1.1065612 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.017257866 = queryNorm
              0.1480922 = fieldWeight in 216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.06288671 = weight(abstract_txt:proximity in 216) [ClassicSimilarity], result of:
            0.06288671 = score(doc=216,freq=1.0), product of:
              0.13958828 = queryWeight, product of:
                1.1221011 = boost
                7.208251 = idf(docFreq=88, maxDocs=44218)
                0.017257866 = queryNorm
              0.4505157 = fieldWeight in 216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.208251 = idf(docFreq=88, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.070196815 = weight(abstract_txt:achieves in 216) [ClassicSimilarity], result of:
            0.070196815 = score(doc=216,freq=1.0), product of:
              0.15020624 = queryWeight, product of:
                1.163996 = boost
                7.4773793 = idf(docFreq=67, maxDocs=44218)
                0.017257866 = queryNorm
              0.4673362 = fieldWeight in 216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4773793 = idf(docFreq=67, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.06506367 = weight(abstract_txt:document in 216) [ClassicSimilarity], result of:
            0.06506367 = score(doc=216,freq=6.0), product of:
              0.099006034 = queryWeight, product of:
                1.3364519 = boost
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.017257866 = queryNorm
              0.65716875 = fieldWeight in 216, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.02892294 = weight(abstract_txt:three in 216) [ClassicSimilarity], result of:
            0.02892294 = score(doc=216,freq=1.0), product of:
              0.10478875 = queryWeight, product of:
                1.3749275 = boost
                4.41619 = idf(docFreq=1451, maxDocs=44218)
                0.017257866 = queryNorm
              0.27601188 = fieldWeight in 216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.41619 = idf(docFreq=1451, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.05406437 = weight(abstract_txt:techniques in 216) [ClassicSimilarity], result of:
            0.05406437 = score(doc=216,freq=3.0), product of:
              0.11025206 = queryWeight, product of:
                1.4103141 = boost
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.017257866 = queryNorm
              0.4903706 = fieldWeight in 216, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.051018443 = weight(abstract_txt:query in 216) [ClassicSimilarity], result of:
            0.051018443 = score(doc=216,freq=2.0), product of:
              0.121421196 = queryWeight, product of:
                1.4800273 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.017257866 = queryNorm
              0.4201774 = fieldWeight in 216, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.024656998 = weight(abstract_txt:search in 216) [ClassicSimilarity], result of:
            0.024656998 = score(doc=216,freq=1.0), product of:
              0.10784754 = queryWeight, product of:
                1.7083358 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017257866 = queryNorm
              0.22862828 = fieldWeight in 216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
          0.07506157 = weight(abstract_txt:engines in 216) [ClassicSimilarity], result of:
            0.07506157 = score(doc=216,freq=1.0), product of:
              0.22653146 = queryWeight, product of:
                2.475896 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.017257866 = queryNorm
              0.3313516 = fieldWeight in 216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.0625 = fieldNorm(doc=216)
        0.4 = coord(10/25)
    
  4. Yeganova, L.; Comeau, D.C.; Kim, W.; Wilbur, W.J.: How to interpret PubMed queries and why it matters (2009) 0.19
    0.19176728 = sum of:
      0.19176728 = product of:
        0.5992727 = sum of:
          0.014984141 = weight(abstract_txt:that in 2712) [ClassicSimilarity], result of:
            0.014984141 = score(doc=2712,freq=5.0), product of:
              0.045249593 = queryWeight, product of:
                1.1065612 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.017257866 = queryNorm
              0.3311442 = fieldWeight in 2712, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0625 = fieldNorm(doc=2712)
          0.08893523 = weight(abstract_txt:proximity in 2712) [ClassicSimilarity], result of:
            0.08893523 = score(doc=2712,freq=2.0), product of:
              0.13958828 = queryWeight, product of:
                1.1221011 = boost
                7.208251 = idf(docFreq=88, maxDocs=44218)
                0.017257866 = queryNorm
              0.6371254 = fieldWeight in 2712, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.208251 = idf(docFreq=88, maxDocs=44218)
                0.0625 = fieldNorm(doc=2712)
          0.031214077 = weight(abstract_txt:techniques in 2712) [ClassicSimilarity], result of:
            0.031214077 = score(doc=2712,freq=1.0), product of:
              0.11025206 = queryWeight, product of:
                1.4103141 = boost
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.017257866 = queryNorm
              0.2831156 = fieldWeight in 2712, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.0625 = fieldNorm(doc=2712)
          0.051018443 = weight(abstract_txt:query in 2712) [ClassicSimilarity], result of:
            0.051018443 = score(doc=2712,freq=2.0), product of:
              0.121421196 = queryWeight, product of:
                1.4800273 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.017257866 = queryNorm
              0.4201774 = fieldWeight in 2712, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=2712)
          0.03487026 = weight(abstract_txt:search in 2712) [ClassicSimilarity], result of:
            0.03487026 = score(doc=2712,freq=2.0), product of:
              0.10784754 = queryWeight, product of:
                1.7083358 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017257866 = queryNorm
              0.3233292 = fieldWeight in 2712, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=2712)
          0.2083335 = weight(abstract_txt:phrase in 2712) [ClassicSimilarity], result of:
            0.2083335 = score(doc=2712,freq=3.0), product of:
              0.27098924 = queryWeight, product of:
                2.2110498 = boost
                7.1017675 = idf(docFreq=98, maxDocs=44218)
                0.017257866 = queryNorm
              0.7687889 = fieldWeight in 2712, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.1017675 = idf(docFreq=98, maxDocs=44218)
                0.0625 = fieldNorm(doc=2712)
          0.07506157 = weight(abstract_txt:engines in 2712) [ClassicSimilarity], result of:
            0.07506157 = score(doc=2712,freq=1.0), product of:
              0.22653146 = queryWeight, product of:
                2.475896 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.017257866 = queryNorm
              0.3313516 = fieldWeight in 2712, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.0625 = fieldNorm(doc=2712)
          0.09485551 = weight(abstract_txt:question in 2712) [ClassicSimilarity], result of:
            0.09485551 = score(doc=2712,freq=1.0), product of:
              0.29143256 = queryWeight, product of:
                3.2426982 = boost
                5.207682 = idf(docFreq=657, maxDocs=44218)
                0.017257866 = queryNorm
              0.32548013 = fieldWeight in 2712, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.207682 = idf(docFreq=657, maxDocs=44218)
                0.0625 = fieldNorm(doc=2712)
        0.32 = coord(8/25)
    
  5. Yilmaz, T.; Ozcan, R.; Altingovde, I.S.; Ulusoy, Ö.: Improving educational web search for question-like queries through subject classification (2019) 0.19
    0.1898904 = sum of:
      0.1898904 = product of:
        0.5934075 = sum of:
          0.014984141 = weight(abstract_txt:that in 5041) [ClassicSimilarity], result of:
            0.014984141 = score(doc=5041,freq=5.0), product of:
              0.045249593 = queryWeight, product of:
                1.1065612 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.017257866 = queryNorm
              0.3311442 = fieldWeight in 5041, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0625 = fieldNorm(doc=5041)
          0.06378843 = weight(abstract_txt:return in 5041) [ClassicSimilarity], result of:
            0.06378843 = score(doc=5041,freq=1.0), product of:
              0.14091946 = queryWeight, product of:
                1.1274388 = boost
                7.24254 = idf(docFreq=85, maxDocs=44218)
                0.017257866 = queryNorm
              0.45265874 = fieldWeight in 5041, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.24254 = idf(docFreq=85, maxDocs=44218)
                0.0625 = fieldNorm(doc=5041)
          0.026562132 = weight(abstract_txt:document in 5041) [ClassicSimilarity], result of:
            0.026562132 = score(doc=5041,freq=1.0), product of:
              0.099006034 = queryWeight, product of:
                1.3364519 = boost
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.017257866 = queryNorm
              0.26828802 = fieldWeight in 5041, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2926083 = idf(docFreq=1642, maxDocs=44218)
                0.0625 = fieldNorm(doc=5041)
          0.072150975 = weight(abstract_txt:query in 5041) [ClassicSimilarity], result of:
            0.072150975 = score(doc=5041,freq=4.0), product of:
              0.121421196 = queryWeight, product of:
                1.4800273 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.017257866 = queryNorm
              0.5942206 = fieldWeight in 5041, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=5041)
          0.065236285 = weight(abstract_txt:search in 5041) [ClassicSimilarity], result of:
            0.065236285 = score(doc=5041,freq=7.0), product of:
              0.10784754 = queryWeight, product of:
                1.7083358 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.017257866 = queryNorm
              0.60489357 = fieldWeight in 5041, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=5041)
          0.106153086 = weight(abstract_txt:engines in 5041) [ClassicSimilarity], result of:
            0.106153086 = score(doc=5041,freq=2.0), product of:
              0.22653146 = queryWeight, product of:
                2.475896 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.017257866 = queryNorm
              0.46860194 = fieldWeight in 5041, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.0625 = fieldNorm(doc=5041)
          0.149677 = weight(abstract_txt:answering in 5041) [ClassicSimilarity], result of:
            0.149677 = score(doc=5041,freq=1.0), product of:
              0.3588835 = queryWeight, product of:
                3.1163402 = boost
                6.6730065 = idf(docFreq=151, maxDocs=44218)
                0.017257866 = queryNorm
              0.4170629 = fieldWeight in 5041, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6730065 = idf(docFreq=151, maxDocs=44218)
                0.0625 = fieldNorm(doc=5041)
          0.09485551 = weight(abstract_txt:question in 5041) [ClassicSimilarity], result of:
            0.09485551 = score(doc=5041,freq=1.0), product of:
              0.29143256 = queryWeight, product of:
                3.2426982 = boost
                5.207682 = idf(docFreq=657, maxDocs=44218)
                0.017257866 = queryNorm
              0.32548013 = fieldWeight in 5041, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.207682 = idf(docFreq=657, maxDocs=44218)
                0.0625 = fieldNorm(doc=5041)
        0.32 = coord(8/25)