Document (#35874)

Author
White, H.D.
Title
Relevance in theory
Source
Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
Imprint
London : Taylor & Francis
Year
2009
Pages
S.xx-xx
Abstract
Relevance is the central concept in information science because of its salience in designing and evaluating literature-based answering systems. It is salient when users seek information through human intermediaries, such as reference librarians, but becomes even more so when systems are automated and users must navigate them on their own. Designers of classic precomputer systems of the nineteenth and twentieth centuries appear to have been no less concerned with relevance than the information scientists of today. The concept has, however, proved difficult to define and operationalize. A common belief is that it is a relation between a user's request for information and the documents the system retrieves in response. Documents might be considered retrieval-worthy because they: 1) constitute evidence for or against a claim; 2) answer a question; or 3) simply match the request in topic. In practice, literature-based answering makes use of term-matching technology, and most evaluation of relevance has involved topical match as the primary criterion for acceptability. The standard table for evaluating the relation of retrieved documents to a request has only the values "relevant" and "not relevant," yet many analysts hold that relevance admits of degrees. Moreover, many analysts hold that users decide relevance on more dimensions than topical match. Who then can validly judge relevance? Is it only the person who put the request and who can evaluate a document on multiple dimensions? Or can surrogate judges perform this function on the basis of topicality? Such questions arise in a longstanding debate on whether relevance is objective or subjective. One proposal has been to reframe the debate in terms of relevance theory (imported from linguistic pragmatics), which makes relevance increase with a document's valuable cognitive effects and decrease with the effort needed to process it. This notion allows degree of topical match to contribute to relevance but allows other considerations to contribute as well. Since both cognitive effects and processing effort will differ across users, they can be taken as subjective, but users' decisions can also be objectively evaluated if the logic behind them is made explicit. Relevance seems problematical because the considerations that lead people to accept documents in literature searches, or to use them later in contexts such as citation, are seldom fully revealed. Once they are revealed, relevance may be seen as not only multidimensional and dynamic, but also understandable.
Footnote
Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.

Similar documents (author)

  1. White, H.S.: OCR software : an introduction (1991) 4.54
    4.535107 = sum of:
      4.535107 = weight(author_txt:white in 3760) [ClassicSimilarity], result of:
        4.535107 = fieldWeight in 3760, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.256171 = idf(docFreq=81, maxDocs=42740)
          0.625 = fieldNorm(doc=3760)
    
  2. White, S.: Compton's affiliate's program : a new type of publisher/developer partnership emerges (1993) 4.54
    4.535107 = sum of:
      4.535107 = weight(author_txt:white in 4634) [ClassicSimilarity], result of:
        4.535107 = fieldWeight in 4634, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.256171 = idf(docFreq=81, maxDocs=42740)
          0.625 = fieldNorm(doc=4634)
    
  3. White, A.: Electronic copying of a cuttings library : a case of fari dealing? (1993) 4.54
    4.535107 = sum of:
      4.535107 = weight(author_txt:white in 6638) [ClassicSimilarity], result of:
        4.535107 = fieldWeight in 6638, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.256171 = idf(docFreq=81, maxDocs=42740)
          0.625 = fieldNorm(doc=6638)
    
  4. White, F.: EndNote Plus: a bibliography maker for the researcher (1993) 4.54
    4.535107 = sum of:
      4.535107 = weight(author_txt:white in 6949) [ClassicSimilarity], result of:
        4.535107 = fieldWeight in 6949, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.256171 = idf(docFreq=81, maxDocs=42740)
          0.625 = fieldNorm(doc=6949)
    
  5. White, A.: Copyright law, information services and the challenge of multimedia (1993) 4.54
    4.535107 = sum of:
      4.535107 = weight(author_txt:white in 7115) [ClassicSimilarity], result of:
        4.535107 = fieldWeight in 7115, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.256171 = idf(docFreq=81, maxDocs=42740)
          0.625 = fieldNorm(doc=7115)
    

Similar documents (content)

  1. Maron, M.E.; Kuhns, I.L.: On relevance, probabilistic indexing and information retrieval (1960) 0.21
    0.20625938 = sum of:
      0.20625938 = product of:
        0.8594141 = sum of:
          0.037415367 = weight(abstract_txt:allows in 2929) [ClassicSimilarity], result of:
            0.037415367 = score(doc=2929,freq=1.0), product of:
              0.10918468 = queryWeight, product of:
                5.482874 = idf(docFreq=482, maxDocs=42740)
                0.019913768 = queryNorm
              0.34267962 = fieldWeight in 2929, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.482874 = idf(docFreq=482, maxDocs=42740)
                0.0625 = fieldNorm(doc=2929)
          0.03869735 = weight(abstract_txt:makes in 2929) [ClassicSimilarity], result of:
            0.03869735 = score(doc=2929,freq=1.0), product of:
              0.11166469 = queryWeight, product of:
                1.0112932 = boost
                5.544793 = idf(docFreq=453, maxDocs=42740)
                0.019913768 = queryNorm
              0.34654957 = fieldWeight in 2929, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.544793 = idf(docFreq=453, maxDocs=42740)
                0.0625 = fieldNorm(doc=2929)
          0.030002339 = weight(abstract_txt:literature in 2929) [ClassicSimilarity], result of:
            0.030002339 = score(doc=2929,freq=1.0), product of:
              0.107877 = queryWeight, product of:
                1.2173885 = boost
                4.4498587 = idf(docFreq=1356, maxDocs=42740)
                0.019913768 = queryNorm
              0.27811617 = fieldWeight in 2929, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4498587 = idf(docFreq=1356, maxDocs=42740)
                0.0625 = fieldNorm(doc=2929)
          0.05480857 = weight(abstract_txt:documents in 2929) [ClassicSimilarity], result of:
            0.05480857 = score(doc=2929,freq=3.0), product of:
              0.123026006 = queryWeight, product of:
                1.5011795 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.019913768 = queryNorm
              0.44550392 = fieldWeight in 2929, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.0625 = fieldNorm(doc=2929)
          0.34397504 = weight(abstract_txt:request in 2929) [ClassicSimilarity], result of:
            0.34397504 = score(doc=2929,freq=5.0), product of:
              0.35304737 = queryWeight, product of:
                2.543025 = boost
                6.971543 = idf(docFreq=108, maxDocs=42740)
                0.019913768 = queryNorm
              0.97430277 = fieldWeight in 2929, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.971543 = idf(docFreq=108, maxDocs=42740)
                0.0625 = fieldNorm(doc=2929)
          0.3545154 = weight(abstract_txt:relevance in 2929) [ClassicSimilarity], result of:
            0.3545154 = score(doc=2929,freq=4.0), product of:
              0.57478166 = queryWeight, product of:
                5.8496146 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.019913768 = queryNorm
              0.6167827 = fieldWeight in 2929, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.0625 = fieldNorm(doc=2929)
        0.24 = coord(6/25)
    
  2. Cosijn, E.: Relevance judgments and measurements (2009) 0.19
    0.19448161 = sum of:
      0.19448161 = product of:
        0.81034005 = sum of:
          0.023019217 = weight(abstract_txt:they in 856) [ClassicSimilarity], result of:
            0.023019217 = score(doc=856,freq=1.0), product of:
              0.07791346 = queryWeight, product of:
                1.0345966 = boost
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.019913768 = queryNorm
              0.29544595 = fieldWeight in 856, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.078125 = fieldNorm(doc=856)
          0.034194224 = weight(abstract_txt:them in 856) [ClassicSimilarity], result of:
            0.034194224 = score(doc=856,freq=1.0), product of:
              0.10143487 = queryWeight, product of:
                1.1804794 = boost
                4.3149467 = idf(docFreq=1552, maxDocs=42740)
                0.019913768 = queryNorm
              0.3371052 = fieldWeight in 856, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3149467 = idf(docFreq=1552, maxDocs=42740)
                0.078125 = fieldNorm(doc=856)
          0.081122234 = weight(abstract_txt:subjective in 856) [ClassicSimilarity], result of:
            0.081122234 = score(doc=856,freq=1.0), product of:
              0.15762132 = queryWeight, product of:
                1.2015079 = boost
                6.5877166 = idf(docFreq=159, maxDocs=42740)
                0.019913768 = queryNorm
              0.51466537 = fieldWeight in 856, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.5877166 = idf(docFreq=159, maxDocs=42740)
                0.078125 = fieldNorm(doc=856)
          0.09688878 = weight(abstract_txt:documents in 856) [ClassicSimilarity], result of:
            0.09688878 = score(doc=856,freq=6.0), product of:
              0.123026006 = queryWeight, product of:
                1.5011795 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.019913768 = queryNorm
              0.7875472 = fieldWeight in 856, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.078125 = fieldNorm(doc=856)
          0.032376874 = weight(abstract_txt:users in 856) [ClassicSimilarity], result of:
            0.032376874 = score(doc=856,freq=1.0), product of:
              0.11596448 = queryWeight, product of:
                1.6294898 = boost
                3.5737147 = idf(docFreq=3258, maxDocs=42740)
                0.019913768 = queryNorm
              0.27919647 = fieldWeight in 856, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5737147 = idf(docFreq=3258, maxDocs=42740)
                0.078125 = fieldNorm(doc=856)
          0.5427387 = weight(abstract_txt:relevance in 856) [ClassicSimilarity], result of:
            0.5427387 = score(doc=856,freq=6.0), product of:
              0.57478166 = queryWeight, product of:
                5.8496146 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.019913768 = queryNorm
              0.9442519 = fieldWeight in 856, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.078125 = fieldNorm(doc=856)
        0.24 = coord(6/25)
    
  3. Kelly, D.: Implicit feedback : using behavior to infer relevance (2005) 0.19
    0.1936511 = sum of:
      0.1936511 = product of:
        0.69161105 = sum of:
          0.03088352 = weight(abstract_txt:they in 1771) [ClassicSimilarity], result of:
            0.03088352 = score(doc=1771,freq=5.0), product of:
              0.07791346 = queryWeight, product of:
                1.0345966 = boost
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.019913768 = queryNorm
              0.39638233 = fieldWeight in 1771, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.046875 = fieldNorm(doc=1771)
          0.055265535 = weight(abstract_txt:effort in 1771) [ClassicSimilarity], result of:
            0.055265535 = score(doc=1771,freq=3.0), product of:
              0.11894606 = queryWeight, product of:
                1.0437444 = boost
                5.722719 = idf(docFreq=379, maxDocs=42740)
                0.019913768 = queryNorm
              0.46462685 = fieldWeight in 1771, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.722719 = idf(docFreq=379, maxDocs=42740)
                0.046875 = fieldNorm(doc=1771)
          0.034167342 = weight(abstract_txt:evaluating in 1771) [ClassicSimilarity], result of:
            0.034167342 = score(doc=1771,freq=1.0), product of:
              0.12449779 = queryWeight, product of:
                1.0678247 = boost
                5.8547482 = idf(docFreq=332, maxDocs=42740)
                0.019913768 = queryNorm
              0.27444133 = fieldWeight in 1771, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8547482 = idf(docFreq=332, maxDocs=42740)
                0.046875 = fieldNorm(doc=1771)
          0.05169354 = weight(abstract_txt:answering in 1771) [ClassicSimilarity], result of:
            0.05169354 = score(doc=1771,freq=1.0), product of:
              0.164076 = queryWeight, product of:
                1.2258623 = boost
                6.721248 = idf(docFreq=139, maxDocs=42740)
                0.019913768 = queryNorm
              0.3150585 = fieldWeight in 1771, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.721248 = idf(docFreq=139, maxDocs=42740)
                0.046875 = fieldNorm(doc=1771)
          0.023732806 = weight(abstract_txt:documents in 1771) [ClassicSimilarity], result of:
            0.023732806 = score(doc=1771,freq=1.0), product of:
              0.123026006 = queryWeight, product of:
                1.5011795 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.019913768 = queryNorm
              0.19290885 = fieldWeight in 1771, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.046875 = fieldNorm(doc=1771)
          0.054945376 = weight(abstract_txt:users in 1771) [ClassicSimilarity], result of:
            0.054945376 = score(doc=1771,freq=8.0), product of:
              0.11596448 = queryWeight, product of:
                1.6294898 = boost
                3.5737147 = idf(docFreq=3258, maxDocs=42740)
                0.019913768 = queryNorm
              0.4738121 = fieldWeight in 1771, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                3.5737147 = idf(docFreq=3258, maxDocs=42740)
                0.046875 = fieldNorm(doc=1771)
          0.44092295 = weight(abstract_txt:relevance in 1771) [ClassicSimilarity], result of:
            0.44092295 = score(doc=1771,freq=11.0), product of:
              0.57478166 = queryWeight, product of:
                5.8496146 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.019913768 = queryNorm
              0.7671138 = fieldWeight in 1771, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.046875 = fieldNorm(doc=1771)
        0.28 = coord(7/25)
    
  4. White, H.D.: Combining bibliometrics, information retrieval, and relevance theory : part 2: some implications for information science (2007) 0.19
    0.18600975 = sum of:
      0.18600975 = product of:
        0.6643205 = sum of:
          0.07976031 = weight(abstract_txt:effects in 2438) [ClassicSimilarity], result of:
            0.07976031 = score(doc=2438,freq=5.0), product of:
              0.115608804 = queryWeight, product of:
                1.0289981 = boost
                5.641867 = idf(docFreq=411, maxDocs=42740)
                0.019913768 = queryNorm
              0.68991554 = fieldWeight in 2438, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.641867 = idf(docFreq=411, maxDocs=42740)
                0.0546875 = fieldNorm(doc=2438)
          0.016113453 = weight(abstract_txt:they in 2438) [ClassicSimilarity], result of:
            0.016113453 = score(doc=2438,freq=1.0), product of:
              0.07791346 = queryWeight, product of:
                1.0345966 = boost
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.019913768 = queryNorm
              0.20681217 = fieldWeight in 2438, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.0546875 = fieldNorm(doc=2438)
          0.09848942 = weight(abstract_txt:effort in 2438) [ClassicSimilarity], result of:
            0.09848942 = score(doc=2438,freq=7.0), product of:
              0.11894606 = queryWeight, product of:
                1.0437444 = boost
                5.722719 = idf(docFreq=379, maxDocs=42740)
                0.019913768 = queryNorm
              0.8280175 = fieldWeight in 2438, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                5.722719 = idf(docFreq=379, maxDocs=42740)
                0.0546875 = fieldNorm(doc=2438)
          0.03385055 = weight(abstract_txt:them in 2438) [ClassicSimilarity], result of:
            0.03385055 = score(doc=2438,freq=2.0), product of:
              0.10143487 = queryWeight, product of:
                1.1804794 = boost
                4.3149467 = idf(docFreq=1552, maxDocs=42740)
                0.019913768 = queryNorm
              0.3337171 = fieldWeight in 2438, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.3149467 = idf(docFreq=1552, maxDocs=42740)
                0.0546875 = fieldNorm(doc=2438)
          0.037126 = weight(abstract_txt:literature in 2438) [ClassicSimilarity], result of:
            0.037126 = score(doc=2438,freq=2.0), product of:
              0.107877 = queryWeight, product of:
                1.2173885 = boost
                4.4498587 = idf(docFreq=1356, maxDocs=42740)
                0.019913768 = queryNorm
              0.3441512 = fieldWeight in 2438, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.4498587 = idf(docFreq=1356, maxDocs=42740)
                0.0546875 = fieldNorm(doc=2438)
          0.08877982 = weight(abstract_txt:topical in 2438) [ClassicSimilarity], result of:
            0.08877982 = score(doc=2438,freq=1.0), product of:
              0.24305037 = queryWeight, product of:
                1.827313 = boost
                6.679284 = idf(docFreq=145, maxDocs=42740)
                0.019913768 = queryNorm
              0.36527336 = fieldWeight in 2438, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.679284 = idf(docFreq=145, maxDocs=42740)
                0.0546875 = fieldNorm(doc=2438)
          0.310201 = weight(abstract_txt:relevance in 2438) [ClassicSimilarity], result of:
            0.310201 = score(doc=2438,freq=4.0), product of:
              0.57478166 = queryWeight, product of:
                5.8496146 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.019913768 = queryNorm
              0.5396849 = fieldWeight in 2438, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.0546875 = fieldNorm(doc=2438)
        0.28 = coord(7/25)
    
  5. White, H.D.: Relevance theory and distributions of judgments in document retrieval (2017) 0.18
    0.17579384 = sum of:
      0.17579384 = product of:
        0.62783515 = sum of:
          0.057651255 = weight(abstract_txt:effects in 1100) [ClassicSimilarity], result of:
            0.057651255 = score(doc=1100,freq=2.0), product of:
              0.115608804 = queryWeight, product of:
                1.0289981 = boost
                5.641867 = idf(docFreq=411, maxDocs=42740)
                0.019913768 = queryNorm
              0.49867532 = fieldWeight in 1100, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.641867 = idf(docFreq=411, maxDocs=42740)
                0.0625 = fieldNorm(doc=1100)
          0.018415375 = weight(abstract_txt:they in 1100) [ClassicSimilarity], result of:
            0.018415375 = score(doc=1100,freq=1.0), product of:
              0.07791346 = queryWeight, product of:
                1.0345966 = boost
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.019913768 = queryNorm
              0.23635677 = fieldWeight in 1100, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.0625 = fieldNorm(doc=1100)
          0.08508686 = weight(abstract_txt:effort in 1100) [ClassicSimilarity], result of:
            0.08508686 = score(doc=1100,freq=4.0), product of:
              0.11894606 = queryWeight, product of:
                1.0437444 = boost
                5.722719 = idf(docFreq=379, maxDocs=42740)
                0.019913768 = queryNorm
              0.7153399 = fieldWeight in 1100, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.722719 = idf(docFreq=379, maxDocs=42740)
                0.0625 = fieldNorm(doc=1100)
          0.027355378 = weight(abstract_txt:them in 1100) [ClassicSimilarity], result of:
            0.027355378 = score(doc=1100,freq=1.0), product of:
              0.10143487 = queryWeight, product of:
                1.1804794 = boost
                4.3149467 = idf(docFreq=1552, maxDocs=42740)
                0.019913768 = queryNorm
              0.26968417 = fieldWeight in 1100, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3149467 = idf(docFreq=1552, maxDocs=42740)
                0.0625 = fieldNorm(doc=1100)
          0.030002339 = weight(abstract_txt:literature in 1100) [ClassicSimilarity], result of:
            0.030002339 = score(doc=1100,freq=1.0), product of:
              0.107877 = queryWeight, product of:
                1.2173885 = boost
                4.4498587 = idf(docFreq=1356, maxDocs=42740)
                0.019913768 = queryNorm
              0.27811617 = fieldWeight in 1100, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4498587 = idf(docFreq=1356, maxDocs=42740)
                0.0625 = fieldNorm(doc=1100)
          0.05480857 = weight(abstract_txt:documents in 1100) [ClassicSimilarity], result of:
            0.05480857 = score(doc=1100,freq=3.0), product of:
              0.123026006 = queryWeight, product of:
                1.5011795 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.019913768 = queryNorm
              0.44550392 = fieldWeight in 1100, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.0625 = fieldNorm(doc=1100)
          0.3545154 = weight(abstract_txt:relevance in 1100) [ClassicSimilarity], result of:
            0.3545154 = score(doc=1100,freq=4.0), product of:
              0.57478166 = queryWeight, product of:
                5.8496146 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.019913768 = queryNorm
              0.6167827 = fieldWeight in 1100, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.0625 = fieldNorm(doc=1100)
        0.28 = coord(7/25)