Document (#7963)

Author
Petry, F.E.
Buckles, B.P.
Prabhu, D.
Title
Fuzzy information retrieval using genetic algorithms and relevance feedback
Source
Integrating technologies - converging professions: proceedings of the 56th Annual Meeting of the American Society for Information Science, Columbus, OH, 24-28 October 1993. Ed.: S. Bonzi
Imprint
Medford, NJ : Learned Information
Year
1993
Pages
S.122-125
Abstract
Genetic programming is applied to a weighted, i.e. fuzzy, information retrieval system in order to improve weighted Boolean query formulation via relevance feedback. The approach brings together the concepts of information retrieval, fuzzy set theory, and genetic programming. Documents are viewed as vectors of weights for the index terms. A weighted Boolean query, viewed as a parse tree, is an organism in the genetic algorithm sense. Through the mechanisms of genetic programming, the weighted query is modified in order to improve precision and recall. Relevance feedback is incorporated, via user defined measures over a trial set of documents. The fitness of a candidate query can be expressed directly as a function of the relevance of the retrieved set. Gives preliminary results based on a tested. The form of the fitness function has a significant effect upon performance and the proper fitness functions take into account relevance based on topicality (and perhaps other factors)

Similar documents (author)

  1. Petry, W.: Im Praxistest : die Retrievalsoftware Genesys/2 für Windows (1993) 5.92
    5.9160414 = sum of:
      5.9160414 = weight(author_txt:petry in 4503) [ClassicSimilarity], result of:
        5.9160414 = fieldWeight in 4503, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.465666 = idf(docFreq=8, maxDocs=42740)
          0.625 = fieldNorm(doc=4503)
    
  2. Petry, W.: Datenreisen billiger : wie man Telekommunikationskosten sparen kann (1994) 5.92
    5.9160414 = sum of:
      5.9160414 = weight(author_txt:petry in 109) [ClassicSimilarity], result of:
        5.9160414 = fieldWeight in 109, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.465666 = idf(docFreq=8, maxDocs=42740)
          0.625 = fieldNorm(doc=109)
    
  3. Petry, A.: Wissen auf schnellen Scheiben (2004) 5.92
    5.9160414 = sum of:
      5.9160414 = weight(author_txt:petry in 4044) [ClassicSimilarity], result of:
        5.9160414 = fieldWeight in 4044, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.465666 = idf(docFreq=8, maxDocs=42740)
          0.625 = fieldNorm(doc=4044)
    
  4. Petry, W.; Schedelbeck, A.: Retrievalsoftware im Vergleich : Recherchieren in Datenbanken (1995) 4.73
    4.732833 = sum of:
      4.732833 = weight(author_txt:petry in 2738) [ClassicSimilarity], result of:
        4.732833 = fieldWeight in 2738, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.465666 = idf(docFreq=8, maxDocs=42740)
          0.5 = fieldNorm(doc=2738)
    
  5. Petry-Eberle, A.: Information services : Beispiel für die Neuausrichtung firmeninterner Zentralfunktionen (1996) 4.73
    4.732833 = sum of:
      4.732833 = weight(author_txt:petry in 4578) [ClassicSimilarity], result of:
        4.732833 = fieldWeight in 4578, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.465666 = idf(docFreq=8, maxDocs=42740)
          0.5 = fieldNorm(doc=4578)
    

Similar documents (content)

  1. Smith, M.P.; Smith, M.: ¬The use of genetic programming to build Boolean queries for text retrieval through relevance feedback (1997) 0.71
    0.7095488 = sum of:
      0.7095488 = product of:
        1.6126108 = sum of:
          0.008626277 = weight(abstract_txt:information in 1762) [ClassicSimilarity], result of:
            0.008626277 = score(doc=1762,freq=2.0), product of:
              0.032128725 = queryWeight, product of:
                1.0654287 = boost
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.012409212 = queryNorm
              0.2684911 = fieldWeight in 1762, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.034208637 = weight(abstract_txt:documents in 1762) [ClassicSimilarity], result of:
            0.034208637 = score(doc=1762,freq=3.0), product of:
              0.061429113 = queryWeight, product of:
                1.2028713 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.012409212 = queryNorm
              0.5568799 = fieldWeight in 1762, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.05012303 = weight(abstract_txt:improve in 1762) [ClassicSimilarity], result of:
            0.05012303 = score(doc=1762,freq=2.0), product of:
              0.09071359 = queryWeight, product of:
                1.4617336 = boost
                5.0010357 = idf(docFreq=781, maxDocs=42740)
                0.012409212 = queryNorm
              0.55254155 = fieldWeight in 1762, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.0010357 = idf(docFreq=781, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.025002519 = weight(abstract_txt:retrieval in 1762) [ClassicSimilarity], result of:
            0.025002519 = score(doc=1762,freq=2.0), product of:
              0.065313116 = queryWeight, product of:
                1.5190703 = boost
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.012409212 = queryNorm
              0.3828101 = fieldWeight in 1762, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.1364089 = weight(abstract_txt:boolean in 1762) [ClassicSimilarity], result of:
            0.1364089 = score(doc=1762,freq=4.0), product of:
              0.14034575 = queryWeight, product of:
                1.8181583 = boost
                6.220473 = idf(docFreq=230, maxDocs=42740)
                0.012409212 = queryNorm
              0.97194886 = fieldWeight in 1762, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.220473 = idf(docFreq=230, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.089198716 = weight(abstract_txt:feedback in 1762) [ClassicSimilarity], result of:
            0.089198716 = score(doc=1762,freq=1.0), product of:
              0.19212931 = queryWeight, product of:
                2.6054003 = boost
                5.942579 = idf(docFreq=304, maxDocs=42740)
                0.012409212 = queryNorm
              0.46426398 = fieldWeight in 1762, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.942579 = idf(docFreq=304, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.08499627 = weight(abstract_txt:query in 1762) [ClassicSimilarity], result of:
            0.08499627 = score(doc=1762,freq=2.0), product of:
              0.16252646 = queryWeight, product of:
                2.7669995 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.012409212 = queryNorm
              0.5229688 = fieldWeight in 1762, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.19190383 = weight(abstract_txt:programming in 1762) [ClassicSimilarity], result of:
            0.19190383 = score(doc=1762,freq=2.0), product of:
              0.25413647 = queryWeight, product of:
                2.9964786 = boost
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.012409212 = queryNorm
              0.7551212 = fieldWeight in 1762, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.08510382 = weight(abstract_txt:relevance in 1762) [ClassicSimilarity], result of:
            0.08510382 = score(doc=1762,freq=1.0), product of:
              0.22076836 = queryWeight, product of:
                3.6055412 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.012409212 = queryNorm
              0.3854892 = fieldWeight in 1762, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.25235677 = weight(abstract_txt:fitness in 1762) [ClassicSimilarity], result of:
            0.25235677 = score(doc=1762,freq=1.0), product of:
              0.3843243 = queryWeight, product of:
                3.6849077 = boost
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.012409212 = queryNorm
              0.6566245 = fieldWeight in 1762, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
          0.65468204 = weight(abstract_txt:genetic in 1762) [ClassicSimilarity], result of:
            0.65468204 = score(doc=1762,freq=4.0), product of:
              0.5419648 = queryWeight, product of:
                5.649208 = boost
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.012409212 = queryNorm
              1.2079788 = fieldWeight in 1762, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.078125 = fieldNorm(doc=1762)
        0.44 = coord(11/25)
    
  2. Robertson, M.; Willett, P.: ¬An upperbound to the performance of ranked output searching : optimal weighting of query terms using a genetic algorithms (1996) 0.47
    0.46620184 = sum of:
      0.46620184 = product of:
        1.4568808 = sum of:
          0.123103775 = weight(abstract_txt:weights in 47) [ClassicSimilarity], result of:
            0.123103775 = score(doc=47,freq=2.0), product of:
              0.09580873 = queryWeight, product of:
                1.0622325 = boost
                7.268441 = idf(docFreq=80, maxDocs=42740)
                0.012409212 = queryNorm
              1.284891 = fieldWeight in 47, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.268441 = idf(docFreq=80, maxDocs=42740)
                0.125 = fieldNorm(doc=47)
          0.009759518 = weight(abstract_txt:information in 47) [ClassicSimilarity], result of:
            0.009759518 = score(doc=47,freq=1.0), product of:
              0.032128725 = queryWeight, product of:
                1.0654287 = boost
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.012409212 = queryNorm
              0.303763 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.125 = fieldNorm(doc=47)
          0.028287122 = weight(abstract_txt:retrieval in 47) [ClassicSimilarity], result of:
            0.028287122 = score(doc=47,freq=1.0), product of:
              0.065313116 = queryWeight, product of:
                1.5190703 = boost
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.012409212 = queryNorm
              0.43310016 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.125 = fieldNorm(doc=47)
          0.079483636 = weight(abstract_txt:function in 47) [ClassicSimilarity], result of:
            0.079483636 = score(doc=47,freq=1.0), product of:
              0.11361334 = queryWeight, product of:
                1.6358621 = boost
                5.596782 = idf(docFreq=430, maxDocs=42740)
                0.012409212 = queryNorm
              0.6995978 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.596782 = idf(docFreq=430, maxDocs=42740)
                0.125 = fieldNorm(doc=47)
          0.096162304 = weight(abstract_txt:query in 47) [ClassicSimilarity], result of:
            0.096162304 = score(doc=47,freq=1.0), product of:
              0.16252646 = queryWeight, product of:
                2.7669995 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.012409212 = queryNorm
              0.5916717 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.125 = fieldNorm(doc=47)
          0.19256796 = weight(abstract_txt:relevance in 47) [ClassicSimilarity], result of:
            0.19256796 = score(doc=47,freq=2.0), product of:
              0.22076836 = queryWeight, product of:
                3.6055412 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.012409212 = queryNorm
              0.8722625 = fieldWeight in 47, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.125 = fieldNorm(doc=47)
          0.40377083 = weight(abstract_txt:fitness in 47) [ClassicSimilarity], result of:
            0.40377083 = score(doc=47,freq=1.0), product of:
              0.3843243 = queryWeight, product of:
                3.6849077 = boost
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.012409212 = queryNorm
              1.0505992 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.125 = fieldNorm(doc=47)
          0.52374566 = weight(abstract_txt:genetic in 47) [ClassicSimilarity], result of:
            0.52374566 = score(doc=47,freq=1.0), product of:
              0.5419648 = queryWeight, product of:
                5.649208 = boost
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.012409212 = queryNorm
              0.9663831 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.125 = fieldNorm(doc=47)
        0.32 = coord(8/25)
    
  3. López-Pujalte, C.; Guerrero-Bote, V.P.; Moya-Anegón, F. de: Order-based fitness functions for genetic algorithms applied to relevance feedback (2003) 0.45
    0.44543383 = sum of:
      0.44543383 = product of:
        1.0123496 = sum of:
          0.043719303 = weight(abstract_txt:documents in 155) [ClassicSimilarity], result of:
            0.043719303 = score(doc=155,freq=10.0), product of:
              0.061429113 = queryWeight, product of:
                1.2028713 = boost
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.012409212 = queryNorm
              0.7117033 = fieldWeight in 155, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                4.115389 = idf(docFreq=1895, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.017670803 = weight(abstract_txt:order in 155) [ClassicSimilarity], result of:
            0.017670803 = score(doc=155,freq=1.0), product of:
              0.07234851 = queryWeight, product of:
                1.3054098 = boost
                4.466204 = idf(docFreq=1334, maxDocs=42740)
                0.012409212 = queryNorm
              0.24424554 = fieldWeight in 155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.466204 = idf(docFreq=1334, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.012375616 = weight(abstract_txt:retrieval in 155) [ClassicSimilarity], result of:
            0.012375616 = score(doc=155,freq=1.0), product of:
              0.065313116 = queryWeight, product of:
                1.5190703 = boost
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.012409212 = queryNorm
              0.18948132 = fieldWeight in 155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.04917799 = weight(abstract_txt:function in 155) [ClassicSimilarity], result of:
            0.04917799 = score(doc=155,freq=2.0), product of:
              0.11361334 = queryWeight, product of:
                1.6358621 = boost
                5.596782 = idf(docFreq=430, maxDocs=42740)
                0.012409212 = queryNorm
              0.43285403 = fieldWeight in 155, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.596782 = idf(docFreq=430, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.057364468 = weight(abstract_txt:viewed in 155) [ClassicSimilarity], result of:
            0.057364468 = score(doc=155,freq=1.0), product of:
              0.15861858 = queryWeight, product of:
                1.9328986 = boost
                6.6130347 = idf(docFreq=155, maxDocs=42740)
                0.012409212 = queryNorm
              0.36165035 = fieldWeight in 155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.6130347 = idf(docFreq=155, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.062439103 = weight(abstract_txt:feedback in 155) [ClassicSimilarity], result of:
            0.062439103 = score(doc=155,freq=1.0), product of:
              0.19212931 = queryWeight, product of:
                2.6054003 = boost
                5.942579 = idf(docFreq=304, maxDocs=42740)
                0.012409212 = queryNorm
              0.3249848 = fieldWeight in 155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.942579 = idf(docFreq=304, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.042071007 = weight(abstract_txt:query in 155) [ClassicSimilarity], result of:
            0.042071007 = score(doc=155,freq=1.0), product of:
              0.16252646 = queryWeight, product of:
                2.7669995 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.012409212 = queryNorm
              0.25885636 = fieldWeight in 155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.059572674 = weight(abstract_txt:relevance in 155) [ClassicSimilarity], result of:
            0.059572674 = score(doc=155,freq=1.0), product of:
              0.22076836 = queryWeight, product of:
                3.6055412 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.012409212 = queryNorm
              0.26984245 = fieldWeight in 155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.30596632 = weight(abstract_txt:fitness in 155) [ClassicSimilarity], result of:
            0.30596632 = score(doc=155,freq=3.0), product of:
              0.3843243 = queryWeight, product of:
                3.6849077 = boost
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.012409212 = queryNorm
              0.7961149 = fieldWeight in 155, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.13285355 = weight(abstract_txt:weighted in 155) [ClassicSimilarity], result of:
            0.13285355 = score(doc=155,freq=1.0), product of:
              0.34982505 = queryWeight, product of:
                4.0594993 = boost
                6.9443917 = idf(docFreq=111, maxDocs=42740)
                0.012409212 = queryNorm
              0.3797714 = fieldWeight in 155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9443917 = idf(docFreq=111, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
          0.22913873 = weight(abstract_txt:genetic in 155) [ClassicSimilarity], result of:
            0.22913873 = score(doc=155,freq=1.0), product of:
              0.5419648 = queryWeight, product of:
                5.649208 = boost
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.012409212 = queryNorm
              0.4227926 = fieldWeight in 155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.0546875 = fieldNorm(doc=155)
        0.44 = coord(11/25)
    
  4. Robertson, A.M.; Willett, P.: Use of genetic algorithms in information retrieval (1995) 0.39
    0.39432314 = sum of:
      0.39432314 = product of:
        1.2322599 = sum of:
          0.07616658 = weight(abstract_txt:weights in 2487) [ClassicSimilarity], result of:
            0.07616658 = score(doc=2487,freq=1.0), product of:
              0.09580873 = queryWeight, product of:
                1.0622325 = boost
                7.268441 = idf(docFreq=80, maxDocs=42740)
                0.012409212 = queryNorm
              0.7949858 = fieldWeight in 2487, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.268441 = idf(docFreq=80, maxDocs=42740)
                0.109375 = fieldNorm(doc=2487)
          0.012076788 = weight(abstract_txt:information in 2487) [ClassicSimilarity], result of:
            0.012076788 = score(doc=2487,freq=2.0), product of:
              0.032128725 = queryWeight, product of:
                1.0654287 = boost
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.012409212 = queryNorm
              0.37588754 = fieldWeight in 2487, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.109375 = fieldNorm(doc=2487)
          0.024751231 = weight(abstract_txt:retrieval in 2487) [ClassicSimilarity], result of:
            0.024751231 = score(doc=2487,freq=1.0), product of:
              0.065313116 = queryWeight, product of:
                1.5190703 = boost
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.012409212 = queryNorm
              0.37896264 = fieldWeight in 2487, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.109375 = fieldNorm(doc=2487)
          0.06954818 = weight(abstract_txt:function in 2487) [ClassicSimilarity], result of:
            0.06954818 = score(doc=2487,freq=1.0), product of:
              0.11361334 = queryWeight, product of:
                1.6358621 = boost
                5.596782 = idf(docFreq=430, maxDocs=42740)
                0.012409212 = queryNorm
              0.61214805 = fieldWeight in 2487, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.596782 = idf(docFreq=430, maxDocs=42740)
                0.109375 = fieldNorm(doc=2487)
          0.11899479 = weight(abstract_txt:query in 2487) [ClassicSimilarity], result of:
            0.11899479 = score(doc=2487,freq=2.0), product of:
              0.16252646 = queryWeight, product of:
                2.7669995 = boost
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.012409212 = queryNorm
              0.7321564 = fieldWeight in 2487, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7333736 = idf(docFreq=1021, maxDocs=42740)
                0.109375 = fieldNorm(doc=2487)
          0.11914535 = weight(abstract_txt:relevance in 2487) [ClassicSimilarity], result of:
            0.11914535 = score(doc=2487,freq=1.0), product of:
              0.22076836 = queryWeight, product of:
                3.6055412 = boost
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.012409212 = queryNorm
              0.5396849 = fieldWeight in 2487, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.934262 = idf(docFreq=835, maxDocs=42740)
                0.109375 = fieldNorm(doc=2487)
          0.35329947 = weight(abstract_txt:fitness in 2487) [ClassicSimilarity], result of:
            0.35329947 = score(doc=2487,freq=1.0), product of:
              0.3843243 = queryWeight, product of:
                3.6849077 = boost
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.012409212 = queryNorm
              0.91927433 = fieldWeight in 2487, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.109375 = fieldNorm(doc=2487)
          0.45827746 = weight(abstract_txt:genetic in 2487) [ClassicSimilarity], result of:
            0.45827746 = score(doc=2487,freq=1.0), product of:
              0.5419648 = queryWeight, product of:
                5.649208 = boost
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.012409212 = queryNorm
              0.8455852 = fieldWeight in 2487, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.109375 = fieldNorm(doc=2487)
        0.32 = coord(8/25)
    
  5. Fan, W.; Fox, E.A.; Pathak, P.; Wu, H.: ¬The effects of fitness functions an genetic programming-based ranking discovery for Web search (2004) 0.37
    0.36996174 = sum of:
      0.36996174 = product of:
        1.5415072 = sum of:
          0.008626277 = weight(abstract_txt:information in 3240) [ClassicSimilarity], result of:
            0.008626277 = score(doc=3240,freq=2.0), product of:
              0.032128725 = queryWeight, product of:
                1.0654287 = boost
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.012409212 = queryNorm
              0.2684911 = fieldWeight in 3240, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.430104 = idf(docFreq=10226, maxDocs=42740)
                0.078125 = fieldNorm(doc=3240)
          0.025002519 = weight(abstract_txt:retrieval in 3240) [ClassicSimilarity], result of:
            0.025002519 = score(doc=3240,freq=2.0), product of:
              0.065313116 = queryWeight, product of:
                1.5190703 = boost
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.012409212 = queryNorm
              0.3828101 = fieldWeight in 3240, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4648013 = idf(docFreq=3633, maxDocs=42740)
                0.078125 = fieldNorm(doc=3240)
          0.09935455 = weight(abstract_txt:function in 3240) [ClassicSimilarity], result of:
            0.09935455 = score(doc=3240,freq=4.0), product of:
              0.11361334 = queryWeight, product of:
                1.6358621 = boost
                5.596782 = idf(docFreq=430, maxDocs=42740)
                0.012409212 = queryNorm
              0.87449723 = fieldWeight in 3240, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.596782 = idf(docFreq=430, maxDocs=42740)
                0.078125 = fieldNorm(doc=3240)
          0.1356965 = weight(abstract_txt:programming in 3240) [ClassicSimilarity], result of:
            0.1356965 = score(doc=3240,freq=1.0), product of:
              0.25413647 = queryWeight, product of:
                2.9964786 = boost
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.012409212 = queryNorm
              0.5339513 = fieldWeight in 3240, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.078125 = fieldNorm(doc=3240)
          0.61814535 = weight(abstract_txt:fitness in 3240) [ClassicSimilarity], result of:
            0.61814535 = score(doc=3240,freq=6.0), product of:
              0.3843243 = queryWeight, product of:
                3.6849077 = boost
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.012409212 = queryNorm
              1.6083951 = fieldWeight in 3240, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                8.404794 = idf(docFreq=25, maxDocs=42740)
                0.078125 = fieldNorm(doc=3240)
          0.65468204 = weight(abstract_txt:genetic in 3240) [ClassicSimilarity], result of:
            0.65468204 = score(doc=3240,freq=4.0), product of:
              0.5419648 = queryWeight, product of:
                5.649208 = boost
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.012409212 = queryNorm
              1.2079788 = fieldWeight in 3240, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.731065 = idf(docFreq=50, maxDocs=42740)
                0.078125 = fieldNorm(doc=3240)
        0.24 = coord(6/25)