Document (#1845)

Author
Robertson, S.E.
Title
Theories and models in information retrieval
Source
Journal of documentation. 33(1977), S.126-148
Year
1977
Abstract
This paper is concerned with recent work in the theory of information retrieval. More particularly, it is concerned with theories which tackle the problem of retrieval performance, in a sense which will be explained. The aim is not an exhaustive survey of such work; rather it is an analysis and synthesis of those contributions which I feel to be important or find interesting
Theme
Literaturübersicht

Similar documents (author)

  1. Robertson, M.A.: Windows 3.0 for the online searcher (1991) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 592) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 592, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=592)
    
  2. Robertson, S.E.: Some recent theories and models in information retrieval (1980) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 1326) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 1326, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=1326)
    
  3. Robertson, S.E.: On term selection for query expansion (1990) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 2650) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 2650, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=2650)
    
  4. Robertson, S.E.: On relevance weight estimation and query expansion (1986) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 3875) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 3875, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=3875)
    
  5. Robertson, S.E.: Indexing theory and retrieval effectiveness (1979) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 5175) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 5175, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=5175)
    

Similar documents (content)

  1. Vakkari, P.; Järvelin, K.: Explanation in information seeking and retrieval (2005) 0.19
    0.19132374 = sum of:
      0.19132374 = product of:
        0.47830933 = sum of:
          0.025029352 = weight(abstract_txt:models in 948) [ClassicSimilarity], result of:
            0.025029352 = score(doc=948,freq=1.0), product of:
              0.11369728 = queryWeight, product of:
                1.085153 = boost
                4.696326 = idf(docFreq=1056, maxDocs=42596)
                0.022310069 = queryNorm
              0.22014028 = fieldWeight in 948, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.696326 = idf(docFreq=1056, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.020800395 = weight(abstract_txt:information in 948) [ClassicSimilarity], result of:
            0.020800395 = score(doc=948,freq=9.0), product of:
              0.060873356 = queryWeight, product of:
                1.122909 = boost
                2.429863 = idf(docFreq=10194, maxDocs=42596)
                0.022310069 = queryNorm
              0.34169948 = fieldWeight in 948, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                2.429863 = idf(docFreq=10194, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.02871963 = weight(abstract_txt:find in 948) [ClassicSimilarity], result of:
            0.02871963 = score(doc=948,freq=1.0), product of:
              0.1246148 = queryWeight, product of:
                1.1360586 = boost
                4.916635 = idf(docFreq=847, maxDocs=42596)
                0.022310069 = queryNorm
              0.23046726 = fieldWeight in 948, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.916635 = idf(docFreq=847, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.010918397 = weight(abstract_txt:with in 948) [ClassicSimilarity], result of:
            0.010918397 = score(doc=948,freq=2.0), product of:
              0.06539677 = queryWeight, product of:
                1.1638823 = boost
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.022310069 = queryNorm
              0.16695622 = fieldWeight in 948, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.06745617 = weight(abstract_txt:explained in 948) [ClassicSimilarity], result of:
            0.06745617 = score(doc=948,freq=1.0), product of:
              0.22019029 = queryWeight, product of:
                1.5101323 = boost
                6.5355515 = idf(docFreq=167, maxDocs=42596)
                0.022310069 = queryNorm
              0.306354 = fieldWeight in 948, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.5355515 = idf(docFreq=167, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.027132617 = weight(abstract_txt:work in 948) [ClassicSimilarity], result of:
            0.027132617 = score(doc=948,freq=1.0), product of:
              0.15116625 = queryWeight, product of:
                1.7695316 = boost
                3.82909 = idf(docFreq=2515, maxDocs=42596)
                0.022310069 = queryNorm
              0.1794886 = fieldWeight in 948, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.82909 = idf(docFreq=2515, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.10985566 = weight(abstract_txt:feel in 948) [ClassicSimilarity], result of:
            0.10985566 = score(doc=948,freq=1.0), product of:
              0.30478856 = queryWeight, product of:
                1.7767047 = boost
                7.689224 = idf(docFreq=52, maxDocs=42596)
                0.022310069 = queryNorm
              0.36043236 = fieldWeight in 948, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.689224 = idf(docFreq=52, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.018312696 = weight(abstract_txt:which in 948) [ClassicSimilarity], result of:
            0.018312696 = score(doc=948,freq=1.0), product of:
              0.13314524 = queryWeight, product of:
                2.0339458 = boost
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.022310069 = queryNorm
              0.13753925 = fieldWeight in 948, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.042569112 = weight(abstract_txt:retrieval in 948) [ClassicSimilarity], result of:
            0.042569112 = score(doc=948,freq=2.0), product of:
              0.18544303 = queryWeight, product of:
                2.40039 = boost
                3.4628031 = idf(docFreq=3628, maxDocs=42596)
                0.022310069 = queryNorm
              0.22955358 = fieldWeight in 948, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4628031 = idf(docFreq=3628, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
          0.12751532 = weight(abstract_txt:theories in 948) [ClassicSimilarity], result of:
            0.12751532 = score(doc=948,freq=2.0), product of:
              0.3366345 = queryWeight, product of:
                2.6406462 = boost
                5.714095 = idf(docFreq=381, maxDocs=42596)
                0.022310069 = queryNorm
              0.37879455 = fieldWeight in 948, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.714095 = idf(docFreq=381, maxDocs=42596)
                0.046875 = fieldNorm(doc=948)
        0.4 = coord(10/25)
    
  2. Brunt, R.: From main entry to work authority record : development of a cataloguing fundamental (1999) 0.18
    0.17863669 = sum of:
      0.17863669 = product of:
        0.55823964 = sum of:
          0.03264566 = weight(abstract_txt:those in 1061) [ClassicSimilarity], result of:
            0.03264566 = score(doc=1061,freq=1.0), product of:
              0.096553534 = queryWeight, product of:
                4.3278008 = idf(docFreq=1527, maxDocs=42596)
                0.022310069 = queryNorm
              0.33810943 = fieldWeight in 1061, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3278008 = idf(docFreq=1527, maxDocs=42596)
                0.078125 = fieldNorm(doc=1061)
          0.05052377 = weight(abstract_txt:problem in 1061) [ClassicSimilarity], result of:
            0.05052377 = score(doc=1061,freq=2.0), product of:
              0.1025349 = queryWeight, product of:
                1.030509 = boost
                4.4598374 = idf(docFreq=1338, maxDocs=42596)
                0.022310069 = queryNorm
              0.49274707 = fieldWeight in 1061, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.4598374 = idf(docFreq=1338, maxDocs=42596)
                0.078125 = fieldNorm(doc=1061)
          0.03865764 = weight(abstract_txt:theory in 1061) [ClassicSimilarity], result of:
            0.03865764 = score(doc=1061,freq=1.0), product of:
              0.10807072 = queryWeight, product of:
                1.0579617 = boost
                4.5786476 = idf(docFreq=1188, maxDocs=42596)
                0.022310069 = queryNorm
              0.35770684 = fieldWeight in 1061, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5786476 = idf(docFreq=1188, maxDocs=42596)
                0.078125 = fieldNorm(doc=1061)
          0.012867455 = weight(abstract_txt:with in 1061) [ClassicSimilarity], result of:
            0.012867455 = score(doc=1061,freq=1.0), product of:
              0.06539677 = queryWeight, product of:
                1.1638823 = boost
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.022310069 = queryNorm
              0.19675979 = fieldWeight in 1061, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.078125 = fieldNorm(doc=1061)
          0.08984089 = weight(abstract_txt:contributions in 1061) [ClassicSimilarity], result of:
            0.08984089 = score(doc=1061,freq=1.0), product of:
              0.18961261 = queryWeight, product of:
                1.4013593 = boost
                6.064804 = idf(docFreq=268, maxDocs=42596)
                0.022310069 = queryNorm
              0.47381282 = fieldWeight in 1061, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.064804 = idf(docFreq=268, maxDocs=42596)
                0.078125 = fieldNorm(doc=1061)
          0.09044206 = weight(abstract_txt:work in 1061) [ClassicSimilarity], result of:
            0.09044206 = score(doc=1061,freq=4.0), product of:
              0.15116625 = queryWeight, product of:
                1.7695316 = boost
                3.82909 = idf(docFreq=2515, maxDocs=42596)
                0.022310069 = queryNorm
              0.59829533 = fieldWeight in 1061, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.82909 = idf(docFreq=2515, maxDocs=42596)
                0.078125 = fieldNorm(doc=1061)
          0.0528642 = weight(abstract_txt:which in 1061) [ClassicSimilarity], result of:
            0.0528642 = score(doc=1061,freq=3.0), product of:
              0.13314524 = queryWeight, product of:
                2.0339458 = boost
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.022310069 = queryNorm
              0.39704162 = fieldWeight in 1061, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.078125 = fieldNorm(doc=1061)
          0.190398 = weight(abstract_txt:concerned in 1061) [ClassicSimilarity], result of:
            0.190398 = score(doc=1061,freq=1.0), product of:
              0.39415717 = queryWeight, product of:
                2.8573644 = boost
                6.183052 = idf(docFreq=238, maxDocs=42596)
                0.022310069 = queryNorm
              0.48305094 = fieldWeight in 1061, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.183052 = idf(docFreq=238, maxDocs=42596)
                0.078125 = fieldNorm(doc=1061)
        0.32 = coord(8/25)
    
  3. Pirolli, P.: Information foraging theory : adaptive interaction with information (2007) 0.17
    0.16753316 = sum of:
      0.16753316 = product of:
        0.4188329 = sum of:
          0.054120693 = weight(abstract_txt:theory in 6) [ClassicSimilarity], result of:
            0.054120693 = score(doc=6,freq=4.0), product of:
              0.10807072 = queryWeight, product of:
                1.0579617 = boost
                4.5786476 = idf(docFreq=1188, maxDocs=42596)
                0.022310069 = queryNorm
              0.5007896 = fieldWeight in 6, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.5786476 = idf(docFreq=1188, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.028183077 = weight(abstract_txt:performance in 6) [ClassicSimilarity], result of:
            0.028183077 = score(doc=6,freq=1.0), product of:
              0.11103965 = queryWeight, product of:
                1.0723954 = boost
                4.6411138 = idf(docFreq=1116, maxDocs=42596)
                0.022310069 = queryNorm
              0.2538109 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6411138 = idf(docFreq=1116, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.04129632 = weight(abstract_txt:models in 6) [ClassicSimilarity], result of:
            0.04129632 = score(doc=6,freq=2.0), product of:
              0.11369728 = queryWeight, product of:
                1.085153 = boost
                4.696326 = idf(docFreq=1056, maxDocs=42596)
                0.022310069 = queryNorm
              0.36321288 = fieldWeight in 6, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.696326 = idf(docFreq=1056, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.031328727 = weight(abstract_txt:information in 6) [ClassicSimilarity], result of:
            0.031328727 = score(doc=6,freq=15.0), product of:
              0.060873356 = queryWeight, product of:
                1.122909 = boost
                2.429863 = idf(docFreq=10194, maxDocs=42596)
                0.022310069 = queryNorm
              0.51465416 = fieldWeight in 6, product of:
                3.8729835 = tf(freq=15.0), with freq of:
                  15.0 = termFreq=15.0
                2.429863 = idf(docFreq=10194, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.03300859 = weight(abstract_txt:recent in 6) [ClassicSimilarity], result of:
            0.03300859 = score(doc=6,freq=1.0), product of:
              0.123377845 = queryWeight, product of:
                1.1304061 = boost
                4.8921723 = idf(docFreq=868, maxDocs=42596)
                0.022310069 = queryNorm
              0.26754066 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8921723 = idf(docFreq=868, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.012738131 = weight(abstract_txt:with in 6) [ClassicSimilarity], result of:
            0.012738131 = score(doc=6,freq=2.0), product of:
              0.06539677 = queryWeight, product of:
                1.1638823 = boost
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.022310069 = queryNorm
              0.19478226 = fieldWeight in 6, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.05648006 = weight(abstract_txt:sense in 6) [ClassicSimilarity], result of:
            0.05648006 = score(doc=6,freq=1.0), product of:
              0.17650186 = queryWeight, product of:
                1.3520432 = boost
                5.851373 = idf(docFreq=332, maxDocs=42596)
                0.022310069 = queryNorm
              0.31999698 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.851373 = idf(docFreq=332, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.021364814 = weight(abstract_txt:which in 6) [ClassicSimilarity], result of:
            0.021364814 = score(doc=6,freq=1.0), product of:
              0.13314524 = queryWeight, product of:
                2.0339458 = boost
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.022310069 = queryNorm
              0.16046247 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.035117727 = weight(abstract_txt:retrieval in 6) [ClassicSimilarity], result of:
            0.035117727 = score(doc=6,freq=1.0), product of:
              0.18544303 = queryWeight, product of:
                2.40039 = boost
                3.4628031 = idf(docFreq=3628, maxDocs=42596)
                0.022310069 = queryNorm
              0.18937205 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4628031 = idf(docFreq=3628, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
          0.10519476 = weight(abstract_txt:theories in 6) [ClassicSimilarity], result of:
            0.10519476 = score(doc=6,freq=1.0), product of:
              0.3366345 = queryWeight, product of:
                2.6406462 = boost
                5.714095 = idf(docFreq=381, maxDocs=42596)
                0.022310069 = queryNorm
              0.31248957 = fieldWeight in 6, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.714095 = idf(docFreq=381, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6)
        0.4 = coord(10/25)
    
  4. Zhai, C.X.; Lafferty, J.: ¬A risk minimization framework for information retrieval (2006) 0.16
    0.16031395 = sum of:
      0.16031395 = product of:
        0.5725498 = sum of:
          0.061878722 = weight(abstract_txt:problem in 2138) [ClassicSimilarity], result of:
            0.061878722 = score(doc=2138,freq=3.0), product of:
              0.1025349 = queryWeight, product of:
                1.030509 = boost
                4.4598374 = idf(docFreq=1338, maxDocs=42596)
                0.022310069 = queryNorm
              0.6034894 = fieldWeight in 2138, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.4598374 = idf(docFreq=1338, maxDocs=42596)
                0.078125 = fieldNorm(doc=2138)
          0.1021819 = weight(abstract_txt:models in 2138) [ClassicSimilarity], result of:
            0.1021819 = score(doc=2138,freq=6.0), product of:
              0.11369728 = queryWeight, product of:
                1.085153 = boost
                4.696326 = idf(docFreq=1056, maxDocs=42596)
                0.022310069 = queryNorm
              0.8987189 = fieldWeight in 2138, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.696326 = idf(docFreq=1056, maxDocs=42596)
                0.078125 = fieldNorm(doc=2138)
          0.011555774 = weight(abstract_txt:information in 2138) [ClassicSimilarity], result of:
            0.011555774 = score(doc=2138,freq=1.0), product of:
              0.060873356 = queryWeight, product of:
                1.122909 = boost
                2.429863 = idf(docFreq=10194, maxDocs=42596)
                0.022310069 = queryNorm
              0.18983305 = fieldWeight in 2138, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.429863 = idf(docFreq=10194, maxDocs=42596)
                0.078125 = fieldNorm(doc=2138)
          0.012867455 = weight(abstract_txt:with in 2138) [ClassicSimilarity], result of:
            0.012867455 = score(doc=2138,freq=1.0), product of:
              0.06539677 = queryWeight, product of:
                1.1638823 = boost
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.022310069 = queryNorm
              0.19675979 = fieldWeight in 2138, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.078125 = fieldNorm(doc=2138)
          0.043163437 = weight(abstract_txt:which in 2138) [ClassicSimilarity], result of:
            0.043163437 = score(doc=2138,freq=2.0), product of:
              0.13314524 = queryWeight, product of:
                2.0339458 = boost
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.022310069 = queryNorm
              0.3241831 = fieldWeight in 2138, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.078125 = fieldNorm(doc=2138)
          0.15050454 = weight(abstract_txt:retrieval in 2138) [ClassicSimilarity], result of:
            0.15050454 = score(doc=2138,freq=9.0), product of:
              0.18544303 = queryWeight, product of:
                2.40039 = boost
                3.4628031 = idf(docFreq=3628, maxDocs=42596)
                0.022310069 = queryNorm
              0.8115945 = fieldWeight in 2138, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                3.4628031 = idf(docFreq=3628, maxDocs=42596)
                0.078125 = fieldNorm(doc=2138)
          0.190398 = weight(abstract_txt:concerned in 2138) [ClassicSimilarity], result of:
            0.190398 = score(doc=2138,freq=1.0), product of:
              0.39415717 = queryWeight, product of:
                2.8573644 = boost
                6.183052 = idf(docFreq=238, maxDocs=42596)
                0.022310069 = queryNorm
              0.48305094 = fieldWeight in 2138, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.183052 = idf(docFreq=238, maxDocs=42596)
                0.078125 = fieldNorm(doc=2138)
        0.28 = coord(7/25)
    
  5. Alexander, F.: Devising a framework for assessing the subjectivity and objectivity of information taxonomy projects (2014) 0.16
    0.15985656 = sum of:
      0.15985656 = product of:
        0.49955177 = sum of:
          0.013073866 = weight(abstract_txt:information in 2771) [ClassicSimilarity], result of:
            0.013073866 = score(doc=2771,freq=2.0), product of:
              0.060873356 = queryWeight, product of:
                1.122909 = boost
                2.429863 = idf(docFreq=10194, maxDocs=42596)
                0.022310069 = queryNorm
              0.21477157 = fieldWeight in 2771, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.429863 = idf(docFreq=10194, maxDocs=42596)
                0.0625 = fieldNorm(doc=2771)
          0.017829668 = weight(abstract_txt:with in 2771) [ClassicSimilarity], result of:
            0.017829668 = score(doc=2771,freq=3.0), product of:
              0.06539677 = queryWeight, product of:
                1.1638823 = boost
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.022310069 = queryNorm
              0.27263835 = fieldWeight in 2771, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.5185254 = idf(docFreq=9329, maxDocs=42596)
                0.0625 = fieldNorm(doc=2771)
          0.043425996 = weight(abstract_txt:rather in 2771) [ClassicSimilarity], result of:
            0.043425996 = score(doc=2771,freq=1.0), product of:
              0.13551615 = queryWeight, product of:
                1.1847084 = boost
                5.1271815 = idf(docFreq=686, maxDocs=42596)
                0.022310069 = queryNorm
              0.32044885 = fieldWeight in 2771, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1271815 = idf(docFreq=686, maxDocs=42596)
                0.0625 = fieldNorm(doc=2771)
          0.07710259 = weight(abstract_txt:interesting in 2771) [ClassicSimilarity], result of:
            0.07710259 = score(doc=2771,freq=1.0), product of:
              0.19870274 = queryWeight, product of:
                1.4345571 = boost
                6.208477 = idf(docFreq=232, maxDocs=42596)
                0.022310069 = queryNorm
              0.3880298 = fieldWeight in 2771, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.208477 = idf(docFreq=232, maxDocs=42596)
                0.0625 = fieldNorm(doc=2771)
          0.051161755 = weight(abstract_txt:work in 2771) [ClassicSimilarity], result of:
            0.051161755 = score(doc=2771,freq=2.0), product of:
              0.15116625 = queryWeight, product of:
                1.7695316 = boost
                3.82909 = idf(docFreq=2515, maxDocs=42596)
                0.022310069 = queryNorm
              0.33844694 = fieldWeight in 2771, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.82909 = idf(docFreq=2515, maxDocs=42596)
                0.0625 = fieldNorm(doc=2771)
          0.02441693 = weight(abstract_txt:which in 2771) [ClassicSimilarity], result of:
            0.02441693 = score(doc=2771,freq=1.0), product of:
              0.13314524 = queryWeight, product of:
                2.0339458 = boost
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.022310069 = queryNorm
              0.18338567 = fieldWeight in 2771, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.9341707 = idf(docFreq=6156, maxDocs=42596)
                0.0625 = fieldNorm(doc=2771)
          0.12022259 = weight(abstract_txt:theories in 2771) [ClassicSimilarity], result of:
            0.12022259 = score(doc=2771,freq=1.0), product of:
              0.3366345 = queryWeight, product of:
                2.6406462 = boost
                5.714095 = idf(docFreq=381, maxDocs=42596)
                0.022310069 = queryNorm
              0.35713094 = fieldWeight in 2771, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.714095 = idf(docFreq=381, maxDocs=42596)
                0.0625 = fieldNorm(doc=2771)
          0.15231839 = weight(abstract_txt:concerned in 2771) [ClassicSimilarity], result of:
            0.15231839 = score(doc=2771,freq=1.0), product of:
              0.39415717 = queryWeight, product of:
                2.8573644 = boost
                6.183052 = idf(docFreq=238, maxDocs=42596)
                0.022310069 = queryNorm
              0.38644075 = fieldWeight in 2771, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.183052 = idf(docFreq=238, maxDocs=42596)
                0.0625 = fieldNorm(doc=2771)
        0.32 = coord(8/25)