Document (#38259)

Author
Li, R.
Chambers, T.
Ding, Y.
Zhang, G.
Meng, L.
Title
Patent citation analysis : calculating science linkage based on citing motivation
Source
Journal of the Association for Information Science and Technology. 65(2014) no.5, S.1007-1017
Year
2014
Abstract
Science linkage is a widely used patent bibliometric indicator to measure patent linkage to scientific research based on the frequency of citations to scientific papers within the patent. Science linkage is also regarded as noisy because the subject of patent citation behavior varies from inventors/applicants to examiners. In order to identify and ultimately reduce this noise, we analyzed the different citing motivations of examiners and inventors/applicants. We built 4 hypotheses based upon our study of patent law, the unique economic nature of a patent, and a patent citation's market effect. To test our hypotheses, we conducted an expert survey based on our science linkage calculation in the domain of catalyst from U.S. patent data (2006-2009) over 3 types of citations: self-citation by inventor/applicant, non-self-citation by inventor/applicant, and citation by examiner. According to our results, evaluated by domain experts, we conclude that the non-self-citation by inventor/applicant is quite noisy and cannot indicate science linkage and that self-citation by inventor/applicant, although limited, is more appropriate for understanding science linkage.
Theme
Informetrie
Field
Patentinformation

Similar documents (author)

  1. Song, M.; Kim, S.Y.; Zhang, G.; Ding, Y.; Chambers, T.: Productivity and influence in bioinformatics : a bibliometric analysis using PubMed central (2014) 2.51
    2.5131302 = sum of:
      2.5131302 = product of:
        3.35084 = sum of:
          0.63822037 = weight(author_txt:zhang in 3203) [ClassicSimilarity], result of:
            0.63822037 = score(doc=3203,freq=1.0), product of:
              0.30840066 = queryWeight, product of:
                6.6222463 = idf(docFreq=152, maxDocs=42306)
                0.0465704 = queryNorm
              2.069452 = fieldWeight in 3203, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6222463 = idf(docFreq=152, maxDocs=42306)
                0.3125 = fieldNorm(doc=3203)
          1.019269 = weight(author_txt:ding in 3203) [ClassicSimilarity], result of:
            1.019269 = score(doc=3203,freq=1.0), product of:
              0.42136723 = queryWeight, product of:
                1.1688875 = boost
                7.740661 = idf(docFreq=49, maxDocs=42306)
                0.0465704 = queryNorm
              2.4189565 = fieldWeight in 3203, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.740661 = idf(docFreq=49, maxDocs=42306)
                0.3125 = fieldNorm(doc=3203)
          1.6933508 = weight(author_txt:chambers in 3203) [ClassicSimilarity], result of:
            1.6933508 = score(doc=3203,freq=1.0), product of:
              0.5910617 = queryWeight, product of:
                1.384391 = boost
                9.167778 = idf(docFreq=11, maxDocs=42306)
                0.0465704 = queryNorm
              2.8649306 = fieldWeight in 3203, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.167778 = idf(docFreq=11, maxDocs=42306)
                0.3125 = fieldNorm(doc=3203)
        0.75 = coord(3/4)
    
  2. Ding, Y.; Zhang, G.; Chambers, T.; Song, M.; Wang, X.; Zhai, C.: Content-based citation analysis : the next generation of citation analysis (2014) 2.01
    2.0105042 = sum of:
      2.0105042 = product of:
        2.6806722 = sum of:
          0.5105763 = weight(author_txt:zhang in 3522) [ClassicSimilarity], result of:
            0.5105763 = score(doc=3522,freq=1.0), product of:
              0.30840066 = queryWeight, product of:
                6.6222463 = idf(docFreq=152, maxDocs=42306)
                0.0465704 = queryNorm
              1.6555616 = fieldWeight in 3522, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6222463 = idf(docFreq=152, maxDocs=42306)
                0.25 = fieldNorm(doc=3522)
          0.8154152 = weight(author_txt:ding in 3522) [ClassicSimilarity], result of:
            0.8154152 = score(doc=3522,freq=1.0), product of:
              0.42136723 = queryWeight, product of:
                1.1688875 = boost
                7.740661 = idf(docFreq=49, maxDocs=42306)
                0.0465704 = queryNorm
              1.9351653 = fieldWeight in 3522, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.740661 = idf(docFreq=49, maxDocs=42306)
                0.25 = fieldNorm(doc=3522)
          1.3546807 = weight(author_txt:chambers in 3522) [ClassicSimilarity], result of:
            1.3546807 = score(doc=3522,freq=1.0), product of:
              0.5910617 = queryWeight, product of:
                1.384391 = boost
                9.167778 = idf(docFreq=11, maxDocs=42306)
                0.0465704 = queryNorm
              2.2919445 = fieldWeight in 3522, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.167778 = idf(docFreq=11, maxDocs=42306)
                0.25 = fieldNorm(doc=3522)
        0.75 = coord(3/4)
    
  3. Li, D.; Tang, J.; Ding, Y.; Shuai, X.; Chambers, T.; Sun, G.; Luo, Z.; Zhang, J.: Topic-level opinion influence model (TOIM) : an investigation using tencent microblogging (2015) 2.01
    2.0105042 = sum of:
      2.0105042 = product of:
        2.6806722 = sum of:
          0.5105763 = weight(author_txt:zhang in 4346) [ClassicSimilarity], result of:
            0.5105763 = score(doc=4346,freq=1.0), product of:
              0.30840066 = queryWeight, product of:
                6.6222463 = idf(docFreq=152, maxDocs=42306)
                0.0465704 = queryNorm
              1.6555616 = fieldWeight in 4346, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6222463 = idf(docFreq=152, maxDocs=42306)
                0.25 = fieldNorm(doc=4346)
          0.8154152 = weight(author_txt:ding in 4346) [ClassicSimilarity], result of:
            0.8154152 = score(doc=4346,freq=1.0), product of:
              0.42136723 = queryWeight, product of:
                1.1688875 = boost
                7.740661 = idf(docFreq=49, maxDocs=42306)
                0.0465704 = queryNorm
              1.9351653 = fieldWeight in 4346, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.740661 = idf(docFreq=49, maxDocs=42306)
                0.25 = fieldNorm(doc=4346)
          1.3546807 = weight(author_txt:chambers in 4346) [ClassicSimilarity], result of:
            1.3546807 = score(doc=4346,freq=1.0), product of:
              0.5910617 = queryWeight, product of:
                1.384391 = boost
                9.167778 = idf(docFreq=11, maxDocs=42306)
                0.0465704 = queryNorm
              2.2919445 = fieldWeight in 4346, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.167778 = idf(docFreq=11, maxDocs=42306)
                0.25 = fieldNorm(doc=4346)
        0.75 = coord(3/4)
    
  4. Zhang, G.; Ding, Y.; Milojevic, S.: Citation content analysis (CCA) : a framework for syntactic and semantic analysis of citation content (2013) 0.99
    0.9944936 = sum of:
      0.9944936 = product of:
        1.9889872 = sum of:
          0.76586443 = weight(author_txt:zhang in 2976) [ClassicSimilarity], result of:
            0.76586443 = score(doc=2976,freq=1.0), product of:
              0.30840066 = queryWeight, product of:
                6.6222463 = idf(docFreq=152, maxDocs=42306)
                0.0465704 = queryNorm
              2.4833424 = fieldWeight in 2976, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6222463 = idf(docFreq=152, maxDocs=42306)
                0.375 = fieldNorm(doc=2976)
          1.2231228 = weight(author_txt:ding in 2976) [ClassicSimilarity], result of:
            1.2231228 = score(doc=2976,freq=1.0), product of:
              0.42136723 = queryWeight, product of:
                1.1688875 = boost
                7.740661 = idf(docFreq=49, maxDocs=42306)
                0.0465704 = queryNorm
              2.9027479 = fieldWeight in 2976, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.740661 = idf(docFreq=49, maxDocs=42306)
                0.375 = fieldNorm(doc=2976)
        0.5 = coord(2/4)
    
  5. Meng, M.: ¬A conceptual framework for online education programs (1993) 0.90
    0.89820075 = sum of:
      0.89820075 = product of:
        3.592803 = sum of:
          3.592803 = weight(author_txt:meng in 7822) [ClassicSimilarity], result of:
            3.592803 = score(doc=7822,freq=1.0), product of:
              0.6148047 = queryWeight, product of:
                1.4119227 = boost
                9.3501 = idf(docFreq=9, maxDocs=42306)
                0.0465704 = queryNorm
              5.843812 = fieldWeight in 7822, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.3501 = idf(docFreq=9, maxDocs=42306)
                0.625 = fieldNorm(doc=7822)
        0.25 = coord(1/4)
    

Similar documents (content)

  1. Azagra-Caro, J.M.; Mattsson, P.; Perruchas, F.: Smoothing the lies : the distinctive effects of patent characteristics on examiner and applicant citations (2011) 0.36
    0.35691074 = sum of:
      0.35691074 = product of:
        1.2746812 = sum of:
          0.08076003 = weight(abstract_txt:citations in 1748) [ClassicSimilarity], result of:
            0.08076003 = score(doc=1748,freq=8.0), product of:
              0.06807764 = queryWeight, product of:
                1.5714968 = boost
                5.36855 = idf(docFreq=535, maxDocs=42306)
                0.008069266 = queryNorm
              1.1862931 = fieldWeight in 1748, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                5.36855 = idf(docFreq=535, maxDocs=42306)
                0.078125 = fieldNorm(doc=1748)
          0.012266706 = weight(abstract_txt:based in 1748) [ClassicSimilarity], result of:
            0.012266706 = score(doc=1748,freq=1.0), product of:
              0.048835106 = queryWeight, product of:
                1.8823152 = boost
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.008069266 = queryNorm
              0.25118622 = fieldWeight in 1748, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.078125 = fieldNorm(doc=1748)
          0.21332626 = weight(abstract_txt:applicants in 1748) [ClassicSimilarity], result of:
            0.21332626 = score(doc=1748,freq=2.0), product of:
              0.20650142 = queryWeight, product of:
                2.7369874 = boost
                9.3501 = idf(docFreq=9, maxDocs=42306)
                0.008069266 = queryNorm
              1.0330498 = fieldWeight in 1748, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                9.3501 = idf(docFreq=9, maxDocs=42306)
                0.078125 = fieldNorm(doc=1748)
          0.25023526 = weight(abstract_txt:examiners in 1748) [ClassicSimilarity], result of:
            0.25023526 = score(doc=1748,freq=2.0), product of:
              0.22968142 = queryWeight, product of:
                2.8865175 = boost
                9.860925 = idf(docFreq=5, maxDocs=42306)
                0.008069266 = queryNorm
              1.0894885 = fieldWeight in 1748, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                9.860925 = idf(docFreq=5, maxDocs=42306)
                0.078125 = fieldNorm(doc=1748)
          0.033501394 = weight(abstract_txt:science in 1748) [ClassicSimilarity], result of:
            0.033501394 = score(doc=1748,freq=1.0), product of:
              0.109224275 = queryWeight, product of:
                3.4477158 = boost
                3.9260306 = idf(docFreq=2267, maxDocs=42306)
                0.008069266 = queryNorm
              0.30672115 = fieldWeight in 1748, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9260306 = idf(docFreq=2267, maxDocs=42306)
                0.078125 = fieldNorm(doc=1748)
          0.0771112 = weight(abstract_txt:citation in 1748) [ClassicSimilarity], result of:
            0.0771112 = score(doc=1748,freq=1.0), product of:
              0.20044927 = queryWeight, product of:
                5.0448413 = boost
                4.9240556 = idf(docFreq=835, maxDocs=42306)
                0.008069266 = queryNorm
              0.38469183 = fieldWeight in 1748, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9240556 = idf(docFreq=835, maxDocs=42306)
                0.078125 = fieldNorm(doc=1748)
          0.60748035 = weight(abstract_txt:patent in 1748) [ClassicSimilarity], result of:
            0.60748035 = score(doc=1748,freq=5.0), product of:
              0.50466806 = queryWeight, product of:
                9.076542 = boost
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.008069266 = queryNorm
              1.2037226 = fieldWeight in 1748, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.078125 = fieldNorm(doc=1748)
        0.28 = coord(7/25)
    
  2. Karki, M.M.S.: Patent citation analysis : a policy analysis tool (1997) 0.23
    0.23408668 = sum of:
      0.23408668 = product of:
        1.1704334 = sum of:
          0.03997418 = weight(abstract_txt:citations in 3077) [ClassicSimilarity], result of:
            0.03997418 = score(doc=3077,freq=1.0), product of:
              0.06807764 = queryWeight, product of:
                1.5714968 = boost
                5.36855 = idf(docFreq=535, maxDocs=42306)
                0.008069266 = queryNorm
              0.58718514 = fieldWeight in 3077, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.36855 = idf(docFreq=535, maxDocs=42306)
                0.109375 = fieldNorm(doc=3077)
          0.017173389 = weight(abstract_txt:based in 3077) [ClassicSimilarity], result of:
            0.017173389 = score(doc=3077,freq=1.0), product of:
              0.048835106 = queryWeight, product of:
                1.8823152 = boost
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.008069266 = queryNorm
              0.35166073 = fieldWeight in 3077, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.109375 = fieldNorm(doc=3077)
          0.046901952 = weight(abstract_txt:science in 3077) [ClassicSimilarity], result of:
            0.046901952 = score(doc=3077,freq=1.0), product of:
              0.109224275 = queryWeight, product of:
                3.4477158 = boost
                3.9260306 = idf(docFreq=2267, maxDocs=42306)
                0.008069266 = queryNorm
              0.4294096 = fieldWeight in 3077, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9260306 = idf(docFreq=2267, maxDocs=42306)
                0.109375 = fieldNorm(doc=3077)
          0.21591134 = weight(abstract_txt:citation in 3077) [ClassicSimilarity], result of:
            0.21591134 = score(doc=3077,freq=4.0), product of:
              0.20044927 = queryWeight, product of:
                5.0448413 = boost
                4.9240556 = idf(docFreq=835, maxDocs=42306)
                0.008069266 = queryNorm
              1.0771371 = fieldWeight in 3077, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.9240556 = idf(docFreq=835, maxDocs=42306)
                0.109375 = fieldNorm(doc=3077)
          0.8504725 = weight(abstract_txt:patent in 3077) [ClassicSimilarity], result of:
            0.8504725 = score(doc=3077,freq=5.0), product of:
              0.50466806 = queryWeight, product of:
                9.076542 = boost
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.008069266 = queryNorm
              1.6852117 = fieldWeight in 3077, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.109375 = fieldNorm(doc=3077)
        0.2 = coord(5/25)
    
  3. Yan, B.; Luo, J.: Filtering patent maps for visualization of diversification paths of inventors and organizations (2017) 0.22
    0.21738997 = sum of:
      0.21738997 = product of:
        1.0869498 = sum of:
          0.009813365 = weight(abstract_txt:based in 570) [ClassicSimilarity], result of:
            0.009813365 = score(doc=570,freq=1.0), product of:
              0.048835106 = queryWeight, product of:
                1.8823152 = boost
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.008069266 = queryNorm
              0.20094898 = fieldWeight in 570, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.0625 = fieldNorm(doc=570)
          0.17649545 = weight(abstract_txt:inventors in 570) [ClassicSimilarity], result of:
            0.17649545 = score(doc=570,freq=2.0), product of:
              0.21118149 = queryWeight, product of:
                2.7678285 = boost
                9.45546 = idf(docFreq=8, maxDocs=42306)
                0.008069266 = queryNorm
              0.8357524 = fieldWeight in 570, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                9.45546 = idf(docFreq=8, maxDocs=42306)
                0.0625 = fieldNorm(doc=570)
          0.026801115 = weight(abstract_txt:science in 570) [ClassicSimilarity], result of:
            0.026801115 = score(doc=570,freq=1.0), product of:
              0.109224275 = queryWeight, product of:
                3.4477158 = boost
                3.9260306 = idf(docFreq=2267, maxDocs=42306)
                0.008069266 = queryNorm
              0.24537691 = fieldWeight in 570, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9260306 = idf(docFreq=2267, maxDocs=42306)
                0.0625 = fieldNorm(doc=570)
          0.29881564 = weight(abstract_txt:inventor in 570) [ClassicSimilarity], result of:
            0.29881564 = score(doc=570,freq=2.0), product of:
              0.3779599 = queryWeight, product of:
                5.2365966 = boost
                8.944634 = idf(docFreq=14, maxDocs=42306)
                0.008069266 = queryNorm
              0.79060143 = fieldWeight in 570, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.944634 = idf(docFreq=14, maxDocs=42306)
                0.0625 = fieldNorm(doc=570)
          0.5750243 = weight(abstract_txt:patent in 570) [ClassicSimilarity], result of:
            0.5750243 = score(doc=570,freq=7.0), product of:
              0.50466806 = queryWeight, product of:
                9.076542 = boost
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.008069266 = queryNorm
              1.139411 = fieldWeight in 570, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.0625 = fieldNorm(doc=570)
        0.2 = coord(5/25)
    
  4. Narin, F.; Hamilton, K.S.: Bibliometric performance measures (1996) 0.20
    0.19987273 = sum of:
      0.19987273 = product of:
        1.2492046 = sum of:
          0.030691087 = weight(abstract_txt:scientific in 6763) [ClassicSimilarity], result of:
            0.030691087 = score(doc=6763,freq=1.0), product of:
              0.052219376 = queryWeight, product of:
                1.3763443 = boost
                4.7018695 = idf(docFreq=1043, maxDocs=42306)
                0.008069266 = queryNorm
              0.5877337 = fieldWeight in 6763, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7018695 = idf(docFreq=1043, maxDocs=42306)
                0.125 = fieldNorm(doc=6763)
          0.045684773 = weight(abstract_txt:citations in 6763) [ClassicSimilarity], result of:
            0.045684773 = score(doc=6763,freq=1.0), product of:
              0.06807764 = queryWeight, product of:
                1.5714968 = boost
                5.36855 = idf(docFreq=535, maxDocs=42306)
                0.008069266 = queryNorm
              0.6710687 = fieldWeight in 6763, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.36855 = idf(docFreq=535, maxDocs=42306)
                0.125 = fieldNorm(doc=6763)
          0.7381513 = weight(abstract_txt:linkage in 6763) [ClassicSimilarity], result of:
            0.7381513 = score(doc=6763,freq=2.0), product of:
              0.52432406 = queryWeight, product of:
                8.159155 = boost
                7.9638047 = idf(docFreq=39, maxDocs=42306)
                0.008069266 = queryNorm
              1.4078151 = fieldWeight in 6763, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.9638047 = idf(docFreq=39, maxDocs=42306)
                0.125 = fieldNorm(doc=6763)
          0.43467754 = weight(abstract_txt:patent in 6763) [ClassicSimilarity], result of:
            0.43467754 = score(doc=6763,freq=1.0), product of:
              0.50466806 = queryWeight, product of:
                9.076542 = boost
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.008069266 = queryNorm
              0.86131376 = fieldWeight in 6763, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.125 = fieldNorm(doc=6763)
        0.16 = coord(4/25)
    
  5. Kousha, K.; Thelwall, M.: Patent citation analysis with Google (2017) 0.18
    0.18264909 = sum of:
      0.18264909 = product of:
        0.91324544 = sum of:
          0.015345544 = weight(abstract_txt:scientific in 236) [ClassicSimilarity], result of:
            0.015345544 = score(doc=236,freq=1.0), product of:
              0.052219376 = queryWeight, product of:
                1.3763443 = boost
                4.7018695 = idf(docFreq=1043, maxDocs=42306)
                0.008069266 = queryNorm
              0.29386684 = fieldWeight in 236, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7018695 = idf(docFreq=1043, maxDocs=42306)
                0.0625 = fieldNorm(doc=236)
          0.060435273 = weight(abstract_txt:citations in 236) [ClassicSimilarity], result of:
            0.060435273 = score(doc=236,freq=7.0), product of:
              0.06807764 = queryWeight, product of:
                1.5714968 = boost
                5.36855 = idf(docFreq=535, maxDocs=42306)
                0.008069266 = queryNorm
              0.88774043 = fieldWeight in 236, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                5.36855 = idf(docFreq=535, maxDocs=42306)
                0.0625 = fieldNorm(doc=236)
          0.026801115 = weight(abstract_txt:science in 236) [ClassicSimilarity], result of:
            0.026801115 = score(doc=236,freq=1.0), product of:
              0.109224275 = queryWeight, product of:
                3.4477158 = boost
                3.9260306 = idf(docFreq=2267, maxDocs=42306)
                0.008069266 = queryNorm
              0.24537691 = fieldWeight in 236, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9260306 = idf(docFreq=2267, maxDocs=42306)
                0.0625 = fieldNorm(doc=236)
          0.12337792 = weight(abstract_txt:citation in 236) [ClassicSimilarity], result of:
            0.12337792 = score(doc=236,freq=4.0), product of:
              0.20044927 = queryWeight, product of:
                5.0448413 = boost
                4.9240556 = idf(docFreq=835, maxDocs=42306)
                0.008069266 = queryNorm
              0.61550695 = fieldWeight in 236, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.9240556 = idf(docFreq=835, maxDocs=42306)
                0.0625 = fieldNorm(doc=236)
          0.6872856 = weight(abstract_txt:patent in 236) [ClassicSimilarity], result of:
            0.6872856 = score(doc=236,freq=10.0), product of:
              0.50466806 = queryWeight, product of:
                9.076542 = boost
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.008069266 = queryNorm
              1.3618567 = fieldWeight in 236, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                6.89051 = idf(docFreq=116, maxDocs=42306)
                0.0625 = fieldNorm(doc=236)
        0.2 = coord(5/25)