Document (#26202)

Author
Evens, M.
Title
Thesaural relations in information retrieval
Source
The semantics of relationships: an interdisciplinary perspective. Eds: Green, R., C.A. Bean u. S.H. Myaeng
Imprint
Dordrecht : Kluwer Academic Publishers
Year
2002
Pages
S.143-160
Series
Information science and knowledge management; vol.3
Abstract
Thesaural relations have long been used in information retrieval to enrich queries; they have sometimes been used to cluster documents as well. Sometimes the first query to an information retrieval system yields no results at all, or, what can be even more disconcerting, many thousands of hits. One solution is to rephrase the query, improving the choice of query terms by using related terms of different types. A collection of related terms is often called a thesaurus. This chapter describes the lexical-semantic relations that have been used in building thesauri and summarizes some of the effects of using these relational thesauri in information retrieval experiments
Footnote
Mit einer Tabelle der diskutierten Relationen
Theme
Begriffstheorie
Theorie verbaler Dokumentationssprachen
Semantisches Umfeld in Indexierung u. Retrieval
Multilinguale Probleme

Similar documents (author)

  1. Evens, M.: Computer-readable dictionaries (1989) 5.81
    5.81187 = sum of:
      5.81187 = weight(author_txt:evens in 2184) [ClassicSimilarity], result of:
        5.81187 = fieldWeight in 2184, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.298992 = idf(docFreq=10, maxDocs=44218)
          0.625 = fieldNorm(doc=2184)
    
  2. Evens, M.W.: Natural language interface for an expert system (2002) 5.81
    5.81187 = sum of:
      5.81187 = weight(author_txt:evens in 3719) [ClassicSimilarity], result of:
        5.81187 = fieldWeight in 3719, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.298992 = idf(docFreq=10, maxDocs=44218)
          0.625 = fieldNorm(doc=3719)
    
  3. Ahlswede, T.; Evens, M.: Generating a relational lexicon from a machine-readable dictionary (1988) 4.65
    4.649496 = sum of:
      4.649496 = weight(author_txt:evens in 870) [ClassicSimilarity], result of:
        4.649496 = fieldWeight in 870, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.298992 = idf(docFreq=10, maxDocs=44218)
          0.5 = fieldNorm(doc=870)
    
  4. Lee, Y.-H.; Evens, M.W.: Natural language interface for an expert system (1998) 4.07
    4.068309 = sum of:
      4.068309 = weight(author_txt:evens in 5108) [ClassicSimilarity], result of:
        4.068309 = fieldWeight in 5108, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.298992 = idf(docFreq=10, maxDocs=44218)
          0.4375 = fieldNorm(doc=5108)
    
  5. Evens, M.; Wang, Y.; Vandendorpe, J.: Relational thesauri in information retrieval (1985) 3.49
    3.487122 = sum of:
      3.487122 = weight(author_txt:evens in 3911) [ClassicSimilarity], result of:
        3.487122 = fieldWeight in 3911, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.298992 = idf(docFreq=10, maxDocs=44218)
          0.375 = fieldNorm(doc=3911)
    

Similar documents (content)

  1. Dumais, S.T.: Latent semantic analysis (2003) 0.35
    0.3532716 = sum of:
      0.3532716 = product of:
        0.63084215 = sum of:
          0.022687698 = weight(abstract_txt:improving in 2462) [ClassicSimilarity], result of:
            0.022687698 = score(doc=2462,freq=1.0), product of:
              0.122971185 = queryWeight, product of:
                5.9038734 = idf(docFreq=327, maxDocs=44218)
                0.020828899 = queryNorm
              0.18449605 = fieldWeight in 2462, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9038734 = idf(docFreq=327, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.05308376 = weight(abstract_txt:lexical in 2462) [ClassicSimilarity], result of:
            0.05308376 = score(doc=2462,freq=3.0), product of:
              0.15027167 = queryWeight, product of:
                1.1054443 = boost
                6.5264034 = idf(docFreq=175, maxDocs=44218)
                0.020828899 = queryNorm
              0.35325193 = fieldWeight in 2462, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.5264034 = idf(docFreq=175, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.012951688 = weight(abstract_txt:using in 2462) [ClassicSimilarity], result of:
            0.012951688 = score(doc=2462,freq=2.0), product of:
              0.08462409 = queryWeight, product of:
                1.1731683 = boost
                3.4631186 = idf(docFreq=3765, maxDocs=44218)
                0.020828899 = queryNorm
              0.15304966 = fieldWeight in 2462, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4631186 = idf(docFreq=3765, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.032782305 = weight(abstract_txt:related in 2462) [ClassicSimilarity], result of:
            0.032782305 = score(doc=2462,freq=4.0), product of:
              0.124745846 = queryWeight, product of:
                1.4243816 = boost
                4.2046843 = idf(docFreq=1793, maxDocs=44218)
                0.020828899 = queryNorm
              0.26279277 = fieldWeight in 2462, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.2046843 = idf(docFreq=1793, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.028798632 = weight(abstract_txt:have in 2462) [ClassicSimilarity], result of:
            0.028798632 = score(doc=2462,freq=7.0), product of:
              0.10869229 = queryWeight, product of:
                1.6283896 = boost
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.020828899 = queryNorm
              0.2649556 = fieldWeight in 2462, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.018772239 = weight(abstract_txt:information in 2462) [ClassicSimilarity], result of:
            0.018772239 = score(doc=2462,freq=9.0), product of:
              0.0827103 = queryWeight, product of:
                1.6402427 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.020828899 = queryNorm
              0.22696373 = fieldWeight in 2462, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.030713001 = weight(abstract_txt:used in 2462) [ClassicSimilarity], result of:
            0.030713001 = score(doc=2462,freq=6.0), product of:
              0.11943948 = queryWeight, product of:
                1.7069976 = boost
                3.3592992 = idf(docFreq=4177, maxDocs=44218)
                0.020828899 = queryNorm
              0.25714278 = fieldWeight in 2462, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.3592992 = idf(docFreq=4177, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.031317323 = weight(abstract_txt:been in 2462) [ClassicSimilarity], result of:
            0.031317323 = score(doc=2462,freq=4.0), product of:
              0.13851175 = queryWeight, product of:
                1.8382401 = boost
                3.617579 = idf(docFreq=3226, maxDocs=44218)
                0.020828899 = queryNorm
              0.22609869 = fieldWeight in 2462, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.617579 = idf(docFreq=3226, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.049969412 = weight(abstract_txt:thesauri in 2462) [ClassicSimilarity], result of:
            0.049969412 = score(doc=2462,freq=2.0), product of:
              0.20816733 = queryWeight, product of:
                1.8400075 = boost
                5.431586 = idf(docFreq=525, maxDocs=44218)
                0.020828899 = queryNorm
              0.24004444 = fieldWeight in 2462, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.431586 = idf(docFreq=525, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.07254163 = weight(abstract_txt:terms in 2462) [ClassicSimilarity], result of:
            0.07254163 = score(doc=2462,freq=11.0), product of:
              0.17307891 = queryWeight, product of:
                2.0548542 = boost
                4.0438666 = idf(docFreq=2106, maxDocs=44218)
                0.020828899 = queryNorm
              0.41912463 = fieldWeight in 2462, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                4.0438666 = idf(docFreq=2106, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.06244649 = weight(abstract_txt:sometimes in 2462) [ClassicSimilarity], result of:
            0.06244649 = score(doc=2462,freq=1.0), product of:
              0.30429286 = queryWeight, product of:
                2.2246373 = boost
                6.5669885 = idf(docFreq=168, maxDocs=44218)
                0.020828899 = queryNorm
              0.20521839 = fieldWeight in 2462, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.5669885 = idf(docFreq=168, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.055523552 = weight(abstract_txt:retrieval in 2462) [ClassicSimilarity], result of:
            0.055523552 = score(doc=2462,freq=9.0), product of:
              0.17042518 = queryWeight, product of:
                2.354481 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.020828899 = queryNorm
              0.3257943 = fieldWeight in 2462, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.07945085 = weight(abstract_txt:query in 2462) [ClassicSimilarity], result of:
            0.07945085 = score(doc=2462,freq=5.0), product of:
              0.23918055 = queryWeight, product of:
                2.4155824 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.020828899 = queryNorm
              0.3321794 = fieldWeight in 2462, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
          0.07980352 = weight(abstract_txt:relations in 2462) [ClassicSimilarity], result of:
            0.07980352 = score(doc=2462,freq=2.0), product of:
              0.32557788 = queryWeight, product of:
                2.8182948 = boost
                5.5462847 = idf(docFreq=468, maxDocs=44218)
                0.020828899 = queryNorm
              0.24511346 = fieldWeight in 2462, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5462847 = idf(docFreq=468, maxDocs=44218)
                0.03125 = fieldNorm(doc=2462)
        0.56 = coord(14/25)
    
  2. Khoo, C.; Myaeng, S.H.: Identifying semantic relations in text for information retrieval and information extraction (2002) 0.32
    0.3231931 = sum of:
      0.3231931 = product of:
        0.80798274 = sum of:
          0.069938764 = weight(abstract_txt:chapter in 1197) [ClassicSimilarity], result of:
            0.069938764 = score(doc=1197,freq=1.0), product of:
              0.141404 = queryWeight, product of:
                1.0723318 = boost
                6.330911 = idf(docFreq=213, maxDocs=44218)
                0.020828899 = queryNorm
              0.49460244 = fieldWeight in 1197, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.330911 = idf(docFreq=213, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.07468988 = weight(abstract_txt:relational in 1197) [ClassicSimilarity], result of:
            0.07468988 = score(doc=1197,freq=1.0), product of:
              0.14773756 = queryWeight, product of:
                1.0960839 = boost
                6.4711404 = idf(docFreq=185, maxDocs=44218)
                0.020828899 = queryNorm
              0.50555784 = fieldWeight in 1197, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.4711404 = idf(docFreq=185, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.057951476 = weight(abstract_txt:related in 1197) [ClassicSimilarity], result of:
            0.057951476 = score(doc=1197,freq=2.0), product of:
              0.124745846 = queryWeight, product of:
                1.4243816 = boost
                4.2046843 = idf(docFreq=1793, maxDocs=44218)
                0.020828899 = queryNorm
              0.46455637 = fieldWeight in 1197, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2046843 = idf(docFreq=1793, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.03498 = weight(abstract_txt:information in 1197) [ClassicSimilarity], result of:
            0.03498 = score(doc=1197,freq=5.0), product of:
              0.0827103 = queryWeight, product of:
                1.6402427 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.020828899 = queryNorm
              0.42292193 = fieldWeight in 1197, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.044330396 = weight(abstract_txt:used in 1197) [ClassicSimilarity], result of:
            0.044330396 = score(doc=1197,freq=2.0), product of:
              0.11943948 = queryWeight, product of:
                1.7069976 = boost
                3.3592992 = idf(docFreq=4177, maxDocs=44218)
                0.020828899 = queryNorm
              0.37115362 = fieldWeight in 1197, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3592992 = idf(docFreq=4177, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.039146654 = weight(abstract_txt:been in 1197) [ClassicSimilarity], result of:
            0.039146654 = score(doc=1197,freq=1.0), product of:
              0.13851175 = queryWeight, product of:
                1.8382401 = boost
                3.617579 = idf(docFreq=3226, maxDocs=44218)
                0.020828899 = queryNorm
              0.28262335 = fieldWeight in 1197, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.617579 = idf(docFreq=3226, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.08833427 = weight(abstract_txt:thesauri in 1197) [ClassicSimilarity], result of:
            0.08833427 = score(doc=1197,freq=1.0), product of:
              0.20816733 = queryWeight, product of:
                1.8400075 = boost
                5.431586 = idf(docFreq=525, maxDocs=44218)
                0.020828899 = queryNorm
              0.42434263 = fieldWeight in 1197, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.431586 = idf(docFreq=525, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.065435134 = weight(abstract_txt:retrieval in 1197) [ClassicSimilarity], result of:
            0.065435134 = score(doc=1197,freq=2.0), product of:
              0.17042518 = queryWeight, product of:
                2.354481 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.020828899 = queryNorm
              0.38395226 = fieldWeight in 1197, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.08882876 = weight(abstract_txt:query in 1197) [ClassicSimilarity], result of:
            0.08882876 = score(doc=1197,freq=1.0), product of:
              0.23918055 = queryWeight, product of:
                2.4155824 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.020828899 = queryNorm
              0.37138787 = fieldWeight in 1197, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
          0.24434738 = weight(abstract_txt:relations in 1197) [ClassicSimilarity], result of:
            0.24434738 = score(doc=1197,freq=3.0), product of:
              0.32557788 = queryWeight, product of:
                2.8182948 = boost
                5.5462847 = idf(docFreq=468, maxDocs=44218)
                0.020828899 = queryNorm
              0.7505036 = fieldWeight in 1197, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.5462847 = idf(docFreq=468, maxDocs=44218)
                0.078125 = fieldNorm(doc=1197)
        0.4 = coord(10/25)
    
  3. Maniez, J.: Relationships in thesauri : some critical remarks (1988) 0.30
    0.3037939 = sum of:
      0.3037939 = product of:
        0.94935596 = sum of:
          0.100518845 = weight(abstract_txt:choice in 806) [ClassicSimilarity], result of:
            0.100518845 = score(doc=806,freq=2.0), product of:
              0.12657577 = queryWeight, product of:
                1.0145503 = boost
                5.989777 = idf(docFreq=300, maxDocs=44218)
                0.020828899 = queryNorm
              0.79413974 = fieldWeight in 806, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.989777 = idf(docFreq=300, maxDocs=44218)
                0.09375 = fieldNorm(doc=806)
          0.09194377 = weight(abstract_txt:lexical in 806) [ClassicSimilarity], result of:
            0.09194377 = score(doc=806,freq=1.0), product of:
              0.15027167 = queryWeight, product of:
                1.1054443 = boost
                6.5264034 = idf(docFreq=175, maxDocs=44218)
                0.020828899 = queryNorm
              0.6118503 = fieldWeight in 806, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.5264034 = idf(docFreq=175, maxDocs=44218)
                0.09375 = fieldNorm(doc=806)
          0.069541775 = weight(abstract_txt:related in 806) [ClassicSimilarity], result of:
            0.069541775 = score(doc=806,freq=2.0), product of:
              0.124745846 = queryWeight, product of:
                1.4243816 = boost
                4.2046843 = idf(docFreq=1793, maxDocs=44218)
                0.020828899 = queryNorm
              0.55746764 = fieldWeight in 806, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2046843 = idf(docFreq=1793, maxDocs=44218)
                0.09375 = fieldNorm(doc=806)
          0.018772239 = weight(abstract_txt:information in 806) [ClassicSimilarity], result of:
            0.018772239 = score(doc=806,freq=1.0), product of:
              0.0827103 = queryWeight, product of:
                1.6402427 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.020828899 = queryNorm
              0.22696373 = fieldWeight in 806, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.09375 = fieldNorm(doc=806)
          0.14990823 = weight(abstract_txt:thesauri in 806) [ClassicSimilarity], result of:
            0.14990823 = score(doc=806,freq=2.0), product of:
              0.20816733 = queryWeight, product of:
                1.8400075 = boost
                5.431586 = idf(docFreq=525, maxDocs=44218)
                0.020828899 = queryNorm
              0.7201333 = fieldWeight in 806, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.431586 = idf(docFreq=525, maxDocs=44218)
                0.09375 = fieldNorm(doc=806)
          0.06561638 = weight(abstract_txt:terms in 806) [ClassicSimilarity], result of:
            0.06561638 = score(doc=806,freq=1.0), product of:
              0.17307891 = queryWeight, product of:
                2.0548542 = boost
                4.0438666 = idf(docFreq=2106, maxDocs=44218)
                0.020828899 = queryNorm
              0.37911248 = fieldWeight in 806, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0438666 = idf(docFreq=2106, maxDocs=44218)
                0.09375 = fieldNorm(doc=806)
          0.055523552 = weight(abstract_txt:retrieval in 806) [ClassicSimilarity], result of:
            0.055523552 = score(doc=806,freq=1.0), product of:
              0.17042518 = queryWeight, product of:
                2.354481 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.020828899 = queryNorm
              0.3257943 = fieldWeight in 806, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.09375 = fieldNorm(doc=806)
          0.39753115 = weight(abstract_txt:thesaural in 806) [ClassicSimilarity], result of:
            0.39753115 = score(doc=806,freq=1.0), product of:
              0.50248104 = queryWeight, product of:
                2.85873 = boost
                8.43879 = idf(docFreq=25, maxDocs=44218)
                0.020828899 = queryNorm
              0.7911366 = fieldWeight in 806, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.43879 = idf(docFreq=25, maxDocs=44218)
                0.09375 = fieldNorm(doc=806)
        0.32 = coord(8/25)
    
  4. Gopinath, M.A.: Symbiosis between classification and thesaurus (1987) 0.24
    0.24242994 = sum of:
      0.24242994 = product of:
        0.86582124 = sum of:
          0.07940694 = weight(abstract_txt:improving in 524) [ClassicSimilarity], result of:
            0.07940694 = score(doc=524,freq=1.0), product of:
              0.122971185 = queryWeight, product of:
                5.9038734 = idf(docFreq=327, maxDocs=44218)
                0.020828899 = queryNorm
              0.64573616 = fieldWeight in 524, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9038734 = idf(docFreq=327, maxDocs=44218)
                0.109375 = fieldNorm(doc=524)
          0.10456584 = weight(abstract_txt:relational in 524) [ClassicSimilarity], result of:
            0.10456584 = score(doc=524,freq=1.0), product of:
              0.14773756 = queryWeight, product of:
                1.0960839 = boost
                6.4711404 = idf(docFreq=185, maxDocs=44218)
                0.020828899 = queryNorm
              0.70778096 = fieldWeight in 524, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.4711404 = idf(docFreq=185, maxDocs=44218)
                0.109375 = fieldNorm(doc=524)
          0.053877305 = weight(abstract_txt:have in 524) [ClassicSimilarity], result of:
            0.053877305 = score(doc=524,freq=2.0), product of:
              0.10869229 = queryWeight, product of:
                1.6283896 = boost
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.020828899 = queryNorm
              0.49568653 = fieldWeight in 524, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.109375 = fieldNorm(doc=524)
          0.021900944 = weight(abstract_txt:information in 524) [ClassicSimilarity], result of:
            0.021900944 = score(doc=524,freq=1.0), product of:
              0.0827103 = queryWeight, product of:
                1.6402427 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.020828899 = queryNorm
              0.264791 = fieldWeight in 524, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.109375 = fieldNorm(doc=524)
          0.07750642 = weight(abstract_txt:been in 524) [ClassicSimilarity], result of:
            0.07750642 = score(doc=524,freq=2.0), product of:
              0.13851175 = queryWeight, product of:
                1.8382401 = boost
                3.617579 = idf(docFreq=3226, maxDocs=44218)
                0.020828899 = queryNorm
              0.5595657 = fieldWeight in 524, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.617579 = idf(docFreq=3226, maxDocs=44218)
                0.109375 = fieldNorm(doc=524)
          0.06477748 = weight(abstract_txt:retrieval in 524) [ClassicSimilarity], result of:
            0.06477748 = score(doc=524,freq=1.0), product of:
              0.17042518 = queryWeight, product of:
                2.354481 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.020828899 = queryNorm
              0.38009337 = fieldWeight in 524, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.109375 = fieldNorm(doc=524)
          0.46378633 = weight(abstract_txt:thesaural in 524) [ClassicSimilarity], result of:
            0.46378633 = score(doc=524,freq=1.0), product of:
              0.50248104 = queryWeight, product of:
                2.85873 = boost
                8.43879 = idf(docFreq=25, maxDocs=44218)
                0.020828899 = queryNorm
              0.9229927 = fieldWeight in 524, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.43879 = idf(docFreq=25, maxDocs=44218)
                0.109375 = fieldNorm(doc=524)
        0.28 = coord(7/25)
    
  5. Na, S.-H.; Kang, I.-S.; Roh, J.-E.; Lee, J.-H.: ¬An empirical study of query expansion and cluster-based retrieval in language modeling approach (2007) 0.23
    0.23248796 = sum of:
      0.23248796 = product of:
        0.7265249 = sum of:
          0.18583763 = weight(abstract_txt:cluster in 906) [ClassicSimilarity], result of:
            0.18583763 = score(doc=906,freq=4.0), product of:
              0.1513322 = queryWeight, product of:
                1.1093383 = boost
                6.5493927 = idf(docFreq=171, maxDocs=44218)
                0.020828899 = queryNorm
              1.2280111 = fieldWeight in 906, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.5493927 = idf(docFreq=171, maxDocs=44218)
                0.09375 = fieldNorm(doc=906)
          0.02747468 = weight(abstract_txt:using in 906) [ClassicSimilarity], result of:
            0.02747468 = score(doc=906,freq=1.0), product of:
              0.08462409 = queryWeight, product of:
                1.1731683 = boost
                3.4631186 = idf(docFreq=3765, maxDocs=44218)
                0.020828899 = queryNorm
              0.32466736 = fieldWeight in 906, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4631186 = idf(docFreq=3765, maxDocs=44218)
                0.09375 = fieldNorm(doc=906)
          0.03265458 = weight(abstract_txt:have in 906) [ClassicSimilarity], result of:
            0.03265458 = score(doc=906,freq=1.0), product of:
              0.10869229 = queryWeight, product of:
                1.6283896 = boost
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.020828899 = queryNorm
              0.30043143 = fieldWeight in 906, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2046018 = idf(docFreq=4876, maxDocs=44218)
                0.09375 = fieldNorm(doc=906)
          0.018772239 = weight(abstract_txt:information in 906) [ClassicSimilarity], result of:
            0.018772239 = score(doc=906,freq=1.0), product of:
              0.0827103 = queryWeight, product of:
                1.6402427 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.020828899 = queryNorm
              0.22696373 = fieldWeight in 906, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.09375 = fieldNorm(doc=906)
          0.04697599 = weight(abstract_txt:been in 906) [ClassicSimilarity], result of:
            0.04697599 = score(doc=906,freq=1.0), product of:
              0.13851175 = queryWeight, product of:
                1.8382401 = boost
                3.617579 = idf(docFreq=3226, maxDocs=44218)
                0.020828899 = queryNorm
              0.33914804 = fieldWeight in 906, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.617579 = idf(docFreq=3226, maxDocs=44218)
                0.09375 = fieldNorm(doc=906)
          0.06561638 = weight(abstract_txt:terms in 906) [ClassicSimilarity], result of:
            0.06561638 = score(doc=906,freq=1.0), product of:
              0.17307891 = queryWeight, product of:
                2.0548542 = boost
                4.0438666 = idf(docFreq=2106, maxDocs=44218)
                0.020828899 = queryNorm
              0.37911248 = fieldWeight in 906, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0438666 = idf(docFreq=2106, maxDocs=44218)
                0.09375 = fieldNorm(doc=906)
          0.13600439 = weight(abstract_txt:retrieval in 906) [ClassicSimilarity], result of:
            0.13600439 = score(doc=906,freq=6.0), product of:
              0.17042518 = queryWeight, product of:
                2.354481 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.020828899 = queryNorm
              0.7980299 = fieldWeight in 906, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.09375 = fieldNorm(doc=906)
          0.213189 = weight(abstract_txt:query in 906) [ClassicSimilarity], result of:
            0.213189 = score(doc=906,freq=4.0), product of:
              0.23918055 = queryWeight, product of:
                2.4155824 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.020828899 = queryNorm
              0.89133084 = fieldWeight in 906, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.09375 = fieldNorm(doc=906)
        0.32 = coord(8/25)