Document (#39208)

Author
Berry, M.W.
Dumais, S.T.
O'Brien, G.W.
Title
Using linear algebra for intelligent information retrieval
Source
SIAM review. 37(1995) no.4, S.573-595
Year
1995
Abstract
Currently, most approaches to retrieving textual materials from scientific databases depend on a lexical match between words in users' requests and those in or assigned to documents in a database. Because of the tremendous diversity in the words people use to describe the same document, lexical methods are necessarily incomplete and imprecise. Using the singular value decomposition (SVD), one can take advantage of the implicit higher-order structure in the association of terms with documents by determining the SVD of large sparse term by document matrices. Terms and documents represented by 200-300 of the largest singular vectors are then matched against user queries. We call this retrieval method Latent Semantic Indexing (LSI) because the subspace represents important associative relationships between terms and documents that are not evident in individual documents. LSI is a completely automatic yet intelligent indexing method, widely applicable, and a promising way to improve users...
Theme
Semantisches Umfeld in Indexierung u. Retrieval
Object
Latent semantic indexing

Similar documents (author)

  1. Dumais, S.T.: Latent semantic analysis (2003) 1.21
    1.2139461 = sum of:
      1.2139461 = product of:
        3.641838 = sum of:
          3.641838 = weight(author_txt:dumais in 4463) [ClassicSimilarity], result of:
            3.641838 = score(doc=4463,freq=1.0), product of:
              0.62172204 = queryWeight, product of:
                1.1083603 = boost
                9.37226 = idf(docFreq=9, maxDocs=43254)
                0.05985094 = queryNorm
              5.8576627 = fieldWeight in 4463, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.37226 = idf(docFreq=9, maxDocs=43254)
                0.625 = fieldNorm(doc=4463)
        0.33333334 = coord(1/3)
    
  2. Berry, J.: CD-ROM: the medium for the moment (1992) 1.14
    1.1444695 = sum of:
      1.1444695 = product of:
        3.4334083 = sum of:
          3.4334083 = weight(author_txt:berry in 3635) [ClassicSimilarity], result of:
            3.4334083 = score(doc=3635,freq=1.0), product of:
              0.59776825 = queryWeight, product of:
                1.086799 = boost
                9.189939 = idf(docFreq=11, maxDocs=43254)
                0.05985094 = queryNorm
              5.7437115 = fieldWeight in 3635, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.189939 = idf(docFreq=11, maxDocs=43254)
                0.625 = fieldNorm(doc=3635)
        0.33333334 = coord(1/3)
    
  3. Gordon, M.D.; Dumais, S.: Using latent semantic indexing for literature based discovery (1998) 0.97
    0.9711568 = sum of:
      0.9711568 = product of:
        2.9134703 = sum of:
          2.9134703 = weight(author_txt:dumais in 6893) [ClassicSimilarity], result of:
            2.9134703 = score(doc=6893,freq=1.0), product of:
              0.62172204 = queryWeight, product of:
                1.1083603 = boost
                9.37226 = idf(docFreq=9, maxDocs=43254)
                0.05985094 = queryNorm
              4.68613 = fieldWeight in 6893, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.37226 = idf(docFreq=9, maxDocs=43254)
                0.5 = fieldNorm(doc=6893)
        0.33333334 = coord(1/3)
    
  4. Dumais, S.; Chen, H.: Hierarchical classification of Web content (2000) 0.97
    0.9711568 = sum of:
      0.9711568 = product of:
        2.9134703 = sum of:
          2.9134703 = weight(author_txt:dumais in 2493) [ClassicSimilarity], result of:
            2.9134703 = score(doc=2493,freq=1.0), product of:
              0.62172204 = queryWeight, product of:
                1.1083603 = boost
                9.37226 = idf(docFreq=9, maxDocs=43254)
                0.05985094 = queryNorm
              4.68613 = fieldWeight in 2493, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.37226 = idf(docFreq=9, maxDocs=43254)
                0.5 = fieldNorm(doc=2493)
        0.33333334 = coord(1/3)
    
  5. Dumais, S.T.; Belkin, N.J.: ¬The TREC interactive tracks : putting the user into search (2005) 0.97
    0.9711568 = sum of:
      0.9711568 = product of:
        2.9134703 = sum of:
          2.9134703 = weight(author_txt:dumais in 82) [ClassicSimilarity], result of:
            2.9134703 = score(doc=82,freq=1.0), product of:
              0.62172204 = queryWeight, product of:
                1.1083603 = boost
                9.37226 = idf(docFreq=9, maxDocs=43254)
                0.05985094 = queryNorm
              4.68613 = fieldWeight in 82, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.37226 = idf(docFreq=9, maxDocs=43254)
                0.5 = fieldNorm(doc=82)
        0.33333334 = coord(1/3)
    

Similar documents (content)

  1. Zhu, W.Z.; Allen, R.B.: Document clustering using the LSI subspace signature model (2013) 0.57
    0.57474786 = sum of:
      0.57474786 = product of:
        1.4368696 = sum of:
          0.14118597 = weight(abstract_txt:latent in 2155) [ClassicSimilarity], result of:
            0.14118597 = score(doc=2155,freq=3.0), product of:
              0.14820439 = queryWeight, product of:
                7.040116 = idf(docFreq=102, maxDocs=43254)
                0.021051412 = queryNorm
              0.95264363 = fieldWeight in 2155, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.040116 = idf(docFreq=102, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.11577669 = weight(abstract_txt:decomposition in 2155) [ClassicSimilarity], result of:
            0.11577669 = score(doc=2155,freq=1.0), product of:
              0.18726411 = queryWeight, product of:
                1.1240788 = boost
                7.913645 = idf(docFreq=42, maxDocs=43254)
                0.021051412 = queryNorm
              0.61825347 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.913645 = idf(docFreq=42, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.121287316 = weight(abstract_txt:matrices in 2155) [ClassicSimilarity], result of:
            0.121287316 = score(doc=2155,freq=1.0), product of:
              0.19316009 = queryWeight, product of:
                1.1416373 = boost
                8.037259 = idf(docFreq=37, maxDocs=43254)
                0.021051412 = queryNorm
              0.62791085 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.037259 = idf(docFreq=37, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.1433033 = weight(abstract_txt:sparse in 2155) [ClassicSimilarity], result of:
            0.1433033 = score(doc=2155,freq=1.0), product of:
              0.21587943 = queryWeight, product of:
                1.2069106 = boost
                8.496791 = idf(docFreq=23, maxDocs=43254)
                0.021051412 = queryNorm
              0.6638118 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.496791 = idf(docFreq=23, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.063627474 = weight(abstract_txt:document in 2155) [ClassicSimilarity], result of:
            0.063627474 = score(doc=2155,freq=3.0), product of:
              0.10975892 = queryWeight, product of:
                1.2170386 = boost
                4.2840466 = idf(docFreq=1620, maxDocs=43254)
                0.021051412 = queryNorm
              0.5797021 = fieldWeight in 2155, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.2840466 = idf(docFreq=1620, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.05420437 = weight(abstract_txt:indexing in 2155) [ClassicSimilarity], result of:
            0.05420437 = score(doc=2155,freq=2.0), product of:
              0.11290938 = queryWeight, product of:
                1.2343817 = boost
                4.345095 = idf(docFreq=1524, maxDocs=43254)
                0.021051412 = queryNorm
              0.4800697 = fieldWeight in 2155, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.345095 = idf(docFreq=1524, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.3905977 = weight(abstract_txt:subspace in 2155) [ClassicSimilarity], result of:
            0.3905977 = score(doc=2155,freq=3.0), product of:
              0.2920697 = queryWeight, product of:
                1.4038242 = boost
                9.883085 = idf(docFreq=5, maxDocs=43254)
                0.021051412 = queryNorm
              1.3373442 = fieldWeight in 2155, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                9.883085 = idf(docFreq=5, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.04683506 = weight(abstract_txt:terms in 2155) [ClassicSimilarity], result of:
            0.04683506 = score(doc=2155,freq=1.0), product of:
              0.1477276 = queryWeight, product of:
                1.7292625 = boost
                4.058069 = idf(docFreq=2031, maxDocs=43254)
                0.021051412 = queryNorm
              0.31703666 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.058069 = idf(docFreq=2031, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.2785829 = weight(abstract_txt:singular in 2155) [ClassicSimilarity], result of:
            0.2785829 = score(doc=2155,freq=1.0), product of:
              0.42366257 = queryWeight, product of:
                2.3910823 = boost
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.021051412 = queryNorm
              0.65755844 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
          0.08146883 = weight(abstract_txt:documents in 2155) [ClassicSimilarity], result of:
            0.08146883 = score(doc=2155,freq=1.0), product of:
              0.2533328 = queryWeight, product of:
                2.9234805 = boost
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.021051412 = queryNorm
              0.32158816 = fieldWeight in 2155, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.078125 = fieldNorm(doc=2155)
        0.4 = coord(10/25)
    
  2. Deerwester, S.C.; Dumais, S.T.; Landauer, T.K.; Furnas, G.W.; Harshman, R.A.: Indexing by latent semantic analysis (1990) 0.37
    0.37075686 = sum of:
      0.37075686 = product of:
        1.0298802 = sum of:
          0.08219676 = weight(abstract_txt:completely in 4400) [ClassicSimilarity], result of:
            0.08219676 = score(doc=4400,freq=1.0), product of:
              0.1490311 = queryWeight, product of:
                1.0027852 = boost
                7.0597243 = idf(docFreq=100, maxDocs=43254)
                0.021051412 = queryNorm
              0.551541 = fieldWeight in 4400, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0597243 = idf(docFreq=100, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
          0.15827382 = weight(abstract_txt:vectors in 4400) [ClassicSimilarity], result of:
            0.15827382 = score(doc=4400,freq=2.0), product of:
              0.18307815 = queryWeight, product of:
                1.1114445 = boost
                7.8246975 = idf(docFreq=46, maxDocs=43254)
                0.021051412 = queryNorm
              0.86451507 = fieldWeight in 4400, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.8246975 = idf(docFreq=46, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
          0.11577669 = weight(abstract_txt:decomposition in 4400) [ClassicSimilarity], result of:
            0.11577669 = score(doc=4400,freq=1.0), product of:
              0.18726411 = queryWeight, product of:
                1.1240788 = boost
                7.913645 = idf(docFreq=42, maxDocs=43254)
                0.021051412 = queryNorm
              0.61825347 = fieldWeight in 4400, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.913645 = idf(docFreq=42, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
          0.05195161 = weight(abstract_txt:document in 4400) [ClassicSimilarity], result of:
            0.05195161 = score(doc=4400,freq=2.0), product of:
              0.10975892 = queryWeight, product of:
                1.2170386 = boost
                4.2840466 = idf(docFreq=1620, maxDocs=43254)
                0.021051412 = queryNorm
              0.47332472 = fieldWeight in 4400, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2840466 = idf(docFreq=1620, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
          0.03832828 = weight(abstract_txt:indexing in 4400) [ClassicSimilarity], result of:
            0.03832828 = score(doc=4400,freq=1.0), product of:
              0.11290938 = queryWeight, product of:
                1.2343817 = boost
                4.345095 = idf(docFreq=1524, maxDocs=43254)
                0.021051412 = queryNorm
              0.33946055 = fieldWeight in 4400, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.345095 = idf(docFreq=1524, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
          0.060711768 = weight(abstract_txt:method in 4400) [ClassicSimilarity], result of:
            0.060711768 = score(doc=4400,freq=2.0), product of:
              0.121774316 = queryWeight, product of:
                1.2819241 = boost
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.021051412 = queryNorm
              0.4985597 = fieldWeight in 4400, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
          0.08112071 = weight(abstract_txt:terms in 4400) [ClassicSimilarity], result of:
            0.08112071 = score(doc=4400,freq=3.0), product of:
              0.1477276 = queryWeight, product of:
                1.7292625 = boost
                4.058069 = idf(docFreq=2031, maxDocs=43254)
                0.021051412 = queryNorm
              0.5491236 = fieldWeight in 4400, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.058069 = idf(docFreq=2031, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
          0.2785829 = weight(abstract_txt:singular in 4400) [ClassicSimilarity], result of:
            0.2785829 = score(doc=4400,freq=1.0), product of:
              0.42366257 = queryWeight, product of:
                2.3910823 = boost
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.021051412 = queryNorm
              0.65755844 = fieldWeight in 4400, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
          0.16293766 = weight(abstract_txt:documents in 4400) [ClassicSimilarity], result of:
            0.16293766 = score(doc=4400,freq=4.0), product of:
              0.2533328 = queryWeight, product of:
                2.9234805 = boost
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.021051412 = queryNorm
              0.6431763 = fieldWeight in 4400, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.078125 = fieldNorm(doc=4400)
        0.36 = coord(9/25)
    
  3. Martin, D.I.; Berry, M.W.: Latent Semantic Indexing (2009) 0.31
    0.30587044 = sum of:
      0.30587044 = product of:
        0.9558451 = sum of:
          0.11527786 = weight(abstract_txt:latent in 299) [ClassicSimilarity], result of:
            0.11527786 = score(doc=299,freq=2.0), product of:
              0.14820439 = queryWeight, product of:
                7.040116 = idf(docFreq=102, maxDocs=43254)
                0.021051412 = queryNorm
              0.77783024 = fieldWeight in 299, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.040116 = idf(docFreq=102, maxDocs=43254)
                0.078125 = fieldNorm(doc=299)
          0.11577669 = weight(abstract_txt:decomposition in 299) [ClassicSimilarity], result of:
            0.11577669 = score(doc=299,freq=1.0), product of:
              0.18726411 = queryWeight, product of:
                1.1240788 = boost
                7.913645 = idf(docFreq=42, maxDocs=43254)
                0.021051412 = queryNorm
              0.61825347 = fieldWeight in 299, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.913645 = idf(docFreq=42, maxDocs=43254)
                0.078125 = fieldNorm(doc=299)
          0.063627474 = weight(abstract_txt:document in 299) [ClassicSimilarity], result of:
            0.063627474 = score(doc=299,freq=3.0), product of:
              0.10975892 = queryWeight, product of:
                1.2170386 = boost
                4.2840466 = idf(docFreq=1620, maxDocs=43254)
                0.021051412 = queryNorm
              0.5797021 = fieldWeight in 299, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.2840466 = idf(docFreq=1620, maxDocs=43254)
                0.078125 = fieldNorm(doc=299)
          0.05420437 = weight(abstract_txt:indexing in 299) [ClassicSimilarity], result of:
            0.05420437 = score(doc=299,freq=2.0), product of:
              0.11290938 = queryWeight, product of:
                1.2343817 = boost
                4.345095 = idf(docFreq=1524, maxDocs=43254)
                0.021051412 = queryNorm
              0.4800697 = fieldWeight in 299, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.345095 = idf(docFreq=1524, maxDocs=43254)
                0.078125 = fieldNorm(doc=299)
          0.060711768 = weight(abstract_txt:method in 299) [ClassicSimilarity], result of:
            0.060711768 = score(doc=299,freq=2.0), product of:
              0.121774316 = queryWeight, product of:
                1.2819241 = boost
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.021051412 = queryNorm
              0.4985597 = fieldWeight in 299, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.078125 = fieldNorm(doc=299)
          0.10472639 = weight(abstract_txt:terms in 299) [ClassicSimilarity], result of:
            0.10472639 = score(doc=299,freq=5.0), product of:
              0.1477276 = queryWeight, product of:
                1.7292625 = boost
                4.058069 = idf(docFreq=2031, maxDocs=43254)
                0.021051412 = queryNorm
              0.70891553 = fieldWeight in 299, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.058069 = idf(docFreq=2031, maxDocs=43254)
                0.078125 = fieldNorm(doc=299)
          0.2785829 = weight(abstract_txt:singular in 299) [ClassicSimilarity], result of:
            0.2785829 = score(doc=299,freq=1.0), product of:
              0.42366257 = queryWeight, product of:
                2.3910823 = boost
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.021051412 = queryNorm
              0.65755844 = fieldWeight in 299, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.078125 = fieldNorm(doc=299)
          0.16293766 = weight(abstract_txt:documents in 299) [ClassicSimilarity], result of:
            0.16293766 = score(doc=299,freq=4.0), product of:
              0.2533328 = queryWeight, product of:
                2.9234805 = boost
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.021051412 = queryNorm
              0.6431763 = fieldWeight in 299, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.078125 = fieldNorm(doc=299)
        0.32 = coord(8/25)
    
  4. Lee, J.-H.; Park, S.; Ahn, C.-M.; Kim, D.: Automatic generic document summarization based on non-negative matrix factorization (2009) 0.29
    0.28534088 = sum of:
      0.28534088 = product of:
        1.0190746 = sum of:
          0.097816505 = weight(abstract_txt:latent in 4449) [ClassicSimilarity], result of:
            0.097816505 = score(doc=4449,freq=1.0), product of:
              0.14820439 = queryWeight, product of:
                7.040116 = idf(docFreq=102, maxDocs=43254)
                0.021051412 = queryNorm
              0.6600109 = fieldWeight in 4449, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.040116 = idf(docFreq=102, maxDocs=43254)
                0.09375 = fieldNorm(doc=4449)
          0.1342998 = weight(abstract_txt:vectors in 4449) [ClassicSimilarity], result of:
            0.1342998 = score(doc=4449,freq=1.0), product of:
              0.18307815 = queryWeight, product of:
                1.1114445 = boost
                7.8246975 = idf(docFreq=46, maxDocs=43254)
                0.021051412 = queryNorm
              0.7335654 = fieldWeight in 4449, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.8246975 = idf(docFreq=46, maxDocs=43254)
                0.09375 = fieldNorm(doc=4449)
          0.062341936 = weight(abstract_txt:document in 4449) [ClassicSimilarity], result of:
            0.062341936 = score(doc=4449,freq=2.0), product of:
              0.10975892 = queryWeight, product of:
                1.2170386 = boost
                4.2840466 = idf(docFreq=1620, maxDocs=43254)
                0.021051412 = queryNorm
              0.5679897 = fieldWeight in 4449, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2840466 = idf(docFreq=1620, maxDocs=43254)
                0.09375 = fieldNorm(doc=4449)
          0.089227706 = weight(abstract_txt:method in 4449) [ClassicSimilarity], result of:
            0.089227706 = score(doc=4449,freq=3.0), product of:
              0.121774316 = queryWeight, product of:
                1.2819241 = boost
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.021051412 = queryNorm
              0.7327301 = fieldWeight in 4449, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.09375 = fieldNorm(doc=4449)
          0.064855225 = weight(abstract_txt:because in 4449) [ClassicSimilarity], result of:
            0.064855225 = score(doc=4449,freq=1.0), product of:
              0.14197971 = queryWeight, product of:
                1.384196 = boost
                4.8724504 = idf(docFreq=899, maxDocs=43254)
                0.021051412 = queryNorm
              0.45679224 = fieldWeight in 4449, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8724504 = idf(docFreq=899, maxDocs=43254)
                0.09375 = fieldNorm(doc=4449)
          0.47277084 = weight(abstract_txt:singular in 4449) [ClassicSimilarity], result of:
            0.47277084 = score(doc=4449,freq=2.0), product of:
              0.42366257 = queryWeight, product of:
                2.3910823 = boost
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.021051412 = queryNorm
              1.1159136 = fieldWeight in 4449, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.09375 = fieldNorm(doc=4449)
          0.097762585 = weight(abstract_txt:documents in 4449) [ClassicSimilarity], result of:
            0.097762585 = score(doc=4449,freq=1.0), product of:
              0.2533328 = queryWeight, product of:
                2.9234805 = boost
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.021051412 = queryNorm
              0.38590577 = fieldWeight in 4449, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.09375 = fieldNorm(doc=4449)
        0.28 = coord(7/25)
    
  5. Lochbaum, K.E.; Streeter, A.R.: Comparing and combining the effectiveness of latent semantic indexing and the ordinary vector space model for information retrieval (1989) 0.24
    0.23570469 = sum of:
      0.23570469 = product of:
        0.8418025 = sum of:
          0.16373296 = weight(abstract_txt:decomposition in 5459) [ClassicSimilarity], result of:
            0.16373296 = score(doc=5459,freq=2.0), product of:
              0.18726411 = queryWeight, product of:
                1.1240788 = boost
                7.913645 = idf(docFreq=42, maxDocs=43254)
                0.021051412 = queryNorm
              0.87434244 = fieldWeight in 5459, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.913645 = idf(docFreq=42, maxDocs=43254)
                0.078125 = fieldNorm(doc=5459)
          0.03832828 = weight(abstract_txt:indexing in 5459) [ClassicSimilarity], result of:
            0.03832828 = score(doc=5459,freq=1.0), product of:
              0.11290938 = queryWeight, product of:
                1.2343817 = boost
                4.345095 = idf(docFreq=1524, maxDocs=43254)
                0.021051412 = queryNorm
              0.33946055 = fieldWeight in 5459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.345095 = idf(docFreq=1524, maxDocs=43254)
                0.078125 = fieldNorm(doc=5459)
          0.0429297 = weight(abstract_txt:method in 5459) [ClassicSimilarity], result of:
            0.0429297 = score(doc=5459,freq=1.0), product of:
              0.121774316 = queryWeight, product of:
                1.2819241 = boost
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.021051412 = queryNorm
              0.35253495 = fieldWeight in 5459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.078125 = fieldNorm(doc=5459)
          0.04683506 = weight(abstract_txt:terms in 5459) [ClassicSimilarity], result of:
            0.04683506 = score(doc=5459,freq=1.0), product of:
              0.1477276 = queryWeight, product of:
                1.7292625 = boost
                4.058069 = idf(docFreq=2031, maxDocs=43254)
                0.021051412 = queryNorm
              0.31703666 = fieldWeight in 5459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.058069 = idf(docFreq=2031, maxDocs=43254)
                0.078125 = fieldNorm(doc=5459)
          0.13028537 = weight(abstract_txt:lexical in 5459) [ClassicSimilarity], result of:
            0.13028537 = score(doc=5459,freq=1.0), product of:
              0.2552589 = queryWeight, product of:
                1.855987 = boost
                6.5331817 = idf(docFreq=170, maxDocs=43254)
                0.021051412 = queryNorm
              0.5104048 = fieldWeight in 5459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.5331817 = idf(docFreq=170, maxDocs=43254)
                0.078125 = fieldNorm(doc=5459)
          0.2785829 = weight(abstract_txt:singular in 5459) [ClassicSimilarity], result of:
            0.2785829 = score(doc=5459,freq=1.0), product of:
              0.42366257 = queryWeight, product of:
                2.3910823 = boost
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.021051412 = queryNorm
              0.65755844 = fieldWeight in 5459, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.416748 = idf(docFreq=25, maxDocs=43254)
                0.078125 = fieldNorm(doc=5459)
          0.14110814 = weight(abstract_txt:documents in 5459) [ClassicSimilarity], result of:
            0.14110814 = score(doc=5459,freq=3.0), product of:
              0.2533328 = queryWeight, product of:
                2.9234805 = boost
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.021051412 = queryNorm
              0.557007 = fieldWeight in 5459, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.1163282 = idf(docFreq=1916, maxDocs=43254)
                0.078125 = fieldNorm(doc=5459)
        0.28 = coord(7/25)