Document (#13916)

Author
Efthimiadis, E.N.
Title
Query expansion
Source
Annual review of information science and technology. 31(1996), S.121-187
Year
1996
Abstract
State of the art review of query expansion (or term expansion) as the process of supplementing the original query with additional terms in order to improve retrieval performance. Research in the subject is presented in a highly structured way and is presented according to 3 types of query expansion; manual query expansion; automatic query expansion; and interactive query expansion
Theme
Literaturübersicht
Semantisches Umfeld in Indexierung u. Retrieval

Similar documents (author)

  1. Efthimiadis, E.N.: Approaches to search formulation and query expansion in information systems : DRS, DBMS, ES (1992) 5.76 
    5.7603507 = sum of:
  5.7603507 = weight(author_txt:efthimiadis in 3870) [ClassicSimilarity], result of:
    5.7603507 = fieldWeight in 3870, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.216561 = idf(docFreq=11, maxDocs=44421)
      0.625 = fieldNorm(doc=3870)
  2. Efthimiadis, E.: Online searching aids : a review of front-ends, gateways and other interfaces (1990) 5.76 
    5.7603507 = sum of:
  5.7603507 = weight(author_txt:efthimiadis in 3876) [ClassicSimilarity], result of:
    5.7603507 = fieldWeight in 3876, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.216561 = idf(docFreq=11, maxDocs=44421)
      0.625 = fieldNorm(doc=3876)
  3. Efthimiadis, E.N.: ¬A study of end-user behaviour in searching CD-ROM bibliographic databases (1994) 5.76 
    5.7603507 = sum of:
  5.7603507 = weight(author_txt:efthimiadis in 197) [ClassicSimilarity], result of:
    5.7603507 = fieldWeight in 197, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.216561 = idf(docFreq=11, maxDocs=44421)
      0.625 = fieldNorm(doc=197)
  4. Efthimiadis, E.N.: End-users' understanding of thesaural knowledge structures in interactive query expansion (1994) 5.76 
    5.7603507 = sum of:
  5.7603507 = weight(author_txt:efthimiadis in 6693) [ClassicSimilarity], result of:
    5.7603507 = fieldWeight in 6693, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.216561 = idf(docFreq=11, maxDocs=44421)
      0.625 = fieldNorm(doc=6693)
  5. Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 5.76 
    5.7603507 = sum of:
  5.7603507 = weight(author_txt:efthimiadis in 6697) [ClassicSimilarity], result of:
    5.7603507 = fieldWeight in 6697, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      9.216561 = idf(docFreq=11, maxDocs=44421)
      0.625 = fieldNorm(doc=6697)

Similar documents (content)

  1. Efthimiadis, E.N.: Interactive query expansion : a user-based evaluation in a relevance feedback environment (2000) 0.75 
    0.74527985 = sum of:
  0.74527985 = product of:
    1.6938179 = sum of:
      0.0025168739 = weight(abstract_txt:with in 6701) [ClassicSimilarity], result of:
        0.0025168739 = score(doc=6701,freq=1.0), product of:
          0.018437603 = queryWeight, product of:
            2.4961398 = idf(docFreq=9949, maxDocs=44421)
            0.0073864465 = queryNorm
          0.13650765 = fieldWeight in 6701, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            2.4961398 = idf(docFreq=9949, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.0051043867 = weight(abstract_txt:research in 6701) [ClassicSimilarity], result of:
        0.0051043867 = score(doc=6701,freq=1.0), product of:
          0.029541047 = queryWeight, product of:
            1.2657872 = boost
            3.159582 = idf(docFreq=5124, maxDocs=44421)
            0.0073864465 = queryNorm
          0.17278963 = fieldWeight in 6701, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.159582 = idf(docFreq=5124, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.0117772 = weight(abstract_txt:retrieval in 6701) [ClassicSimilarity], result of:
        0.0117772 = score(doc=6701,freq=3.0), product of:
          0.035764415 = queryWeight, product of:
            1.3927505 = boost
            3.4765 = idf(docFreq=3732, maxDocs=44421)
            0.0073864465 = queryNorm
          0.3292994 = fieldWeight in 6701, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            3.4765 = idf(docFreq=3732, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.037066884 = weight(abstract_txt:terms in 6701) [ClassicSimilarity], result of:
        0.037066884 = score(doc=6701,freq=12.0), product of:
          0.048386827 = queryWeight, product of:
            1.6199863 = boost
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.0073864465 = queryNorm
          0.7660532 = fieldWeight in 6701, product of:
            3.4641016 = tf(freq=12.0), with freq of:
              12.0 = termFreq=12.0
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.03567571 = weight(abstract_txt:term in 6701) [ClassicSimilarity], result of:
        0.03567571 = score(doc=6701,freq=4.0), product of:
          0.06802866 = queryWeight, product of:
            1.9208512 = boost
            4.794713 = idf(docFreq=998, maxDocs=44421)
            0.0073864465 = queryNorm
          0.52442175 = fieldWeight in 6701, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.794713 = idf(docFreq=998, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.022697749 = weight(abstract_txt:automatic in 6701) [ClassicSimilarity], result of:
        0.022697749 = score(doc=6701,freq=1.0), product of:
          0.07988257 = queryWeight, product of:
            2.0814874 = boost
            5.1956835 = idf(docFreq=668, maxDocs=44421)
            0.0073864465 = queryNorm
          0.28413895 = fieldWeight in 6701, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.1956835 = idf(docFreq=668, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.037038628 = weight(abstract_txt:highly in 6701) [ClassicSimilarity], result of:
        0.037038628 = score(doc=6701,freq=2.0), product of:
          0.087880015 = queryWeight, product of:
            2.1831965 = boost
            5.4495635 = idf(docFreq=518, maxDocs=44421)
            0.0073864465 = queryNorm
          0.42146817 = fieldWeight in 6701, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.4495635 = idf(docFreq=518, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.062105067 = weight(abstract_txt:interactive in 6701) [ClassicSimilarity], result of:
        0.062105067 = score(doc=6701,freq=5.0), product of:
          0.091388494 = queryWeight, product of:
            2.2263505 = boost
            5.557282 = idf(docFreq=465, maxDocs=44421)
            0.0073864465 = queryNorm
          0.67957205 = fieldWeight in 6701, product of:
            2.236068 = tf(freq=5.0), with freq of:
              5.0 = termFreq=5.0
            5.557282 = idf(docFreq=465, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.047694996 = weight(abstract_txt:presented in 6701) [ClassicSimilarity], result of:
        0.047694996 = score(doc=6701,freq=2.0), product of:
          0.13105252 = queryWeight, product of:
            3.770383 = boost
            4.7057014 = idf(docFreq=1091, maxDocs=44421)
            0.0073864465 = queryNorm
          0.36393803 = fieldWeight in 6701, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.7057014 = idf(docFreq=1091, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.5019836 = weight(abstract_txt:query in 6701) [ClassicSimilarity], result of:
        0.5019836 = score(doc=6701,freq=17.0), product of:
          0.46824473 = queryWeight, product of:
            13.333164 = boost
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.0073864465 = queryNorm
          1.0720539 = fieldWeight in 6701, product of:
            4.1231055 = tf(freq=17.0), with freq of:
              17.0 = termFreq=17.0
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
      0.9301568 = weight(abstract_txt:expansion in 6701) [ClassicSimilarity], result of:
        0.9301568 = score(doc=6701,freq=13.0), product of:
          0.7724775 = queryWeight, product of:
            17.12536 = boost
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.0073864465 = queryNorm
          1.2041216 = fieldWeight in 6701, product of:
            3.6055512 = tf(freq=13.0), with freq of:
              13.0 = termFreq=13.0
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.0546875 = fieldNorm(doc=6701)
    0.44 = coord(11/25)
  2. Hancock-Beaulieu, M.: Query expansion : advances in research in online catalogues (1992) 0.72 
    0.7181671 = sum of:
  0.7181671 = product of:
    2.2442722 = sum of:
      0.007191068 = weight(abstract_txt:with in 2350) [ClassicSimilarity], result of:
        0.007191068 = score(doc=2350,freq=1.0), product of:
          0.018437603 = queryWeight, product of:
            2.4961398 = idf(docFreq=9949, maxDocs=44421)
            0.0073864465 = queryNorm
          0.39002183 = fieldWeight in 2350, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            2.4961398 = idf(docFreq=9949, maxDocs=44421)
            0.15625 = fieldNorm(doc=2350)
      0.04323569 = weight(abstract_txt:terms in 2350) [ClassicSimilarity], result of:
        0.04323569 = score(doc=2350,freq=2.0), product of:
          0.048386827 = queryWeight, product of:
            1.6199863 = boost
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.0073864465 = queryNorm
          0.8935425 = fieldWeight in 2350, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.15625 = fieldNorm(doc=2350)
      0.030690568 = weight(abstract_txt:process in 2350) [ClassicSimilarity], result of:
        0.030690568 = score(doc=2350,freq=1.0), product of:
          0.048511587 = queryWeight, product of:
            1.6220734 = boost
            4.048922 = idf(docFreq=2105, maxDocs=44421)
            0.0073864465 = queryNorm
          0.63264406 = fieldWeight in 2350, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.048922 = idf(docFreq=2105, maxDocs=44421)
            0.15625 = fieldNorm(doc=2350)
      0.072908044 = weight(abstract_txt:original in 2350) [ClassicSimilarity], result of:
        0.072908044 = score(doc=2350,freq=1.0), product of:
          0.08636925 = queryWeight, product of:
            2.1643493 = boost
            5.4025183 = idf(docFreq=543, maxDocs=44421)
            0.0073864465 = queryNorm
          0.8441435 = fieldWeight in 2350, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.4025183 = idf(docFreq=543, maxDocs=44421)
            0.15625 = fieldNorm(doc=2350)
      0.08336595 = weight(abstract_txt:additional in 2350) [ClassicSimilarity], result of:
        0.08336595 = score(doc=2350,freq=1.0), product of:
          0.09444261 = queryWeight, product of:
            2.263246 = boost
            5.6493783 = idf(docFreq=424, maxDocs=44421)
            0.0073864465 = queryNorm
          0.88271534 = fieldWeight in 2350, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.6493783 = idf(docFreq=424, maxDocs=44421)
            0.15625 = fieldNorm(doc=2350)
      0.36198738 = weight(abstract_txt:supplementing in 2350) [ClassicSimilarity], result of:
        0.36198738 = score(doc=2350,freq=1.0), product of:
          0.25136483 = queryWeight, product of:
            3.6923258 = boost
            9.216561 = idf(docFreq=11, maxDocs=44421)
            0.0073864465 = queryNorm
          1.4400877 = fieldWeight in 2350, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            9.216561 = idf(docFreq=11, maxDocs=44421)
            0.15625 = fieldNorm(doc=2350)
      0.60250086 = weight(abstract_txt:query in 2350) [ClassicSimilarity], result of:
        0.60250086 = score(doc=2350,freq=3.0), product of:
          0.46824473 = queryWeight, product of:
            13.333164 = boost
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.0073864465 = queryNorm
          1.2867222 = fieldWeight in 2350, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.15625 = fieldNorm(doc=2350)
      1.0423928 = weight(abstract_txt:expansion in 2350) [ClassicSimilarity], result of:
        1.0423928 = score(doc=2350,freq=2.0), product of:
          0.7724775 = queryWeight, product of:
            17.12536 = boost
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.0073864465 = queryNorm
          1.3494152 = fieldWeight in 2350, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.15625 = fieldNorm(doc=2350)
    0.32 = coord(8/25)
  3. Magennis, M.: Expert rule-based query expansion (1995) 0.49 
    0.4930098 = sum of:
  0.4930098 = product of:
    1.3694717 = sum of:
      0.003595534 = weight(abstract_txt:with in 5249) [ClassicSimilarity], result of:
        0.003595534 = score(doc=5249,freq=1.0), product of:
          0.018437603 = queryWeight, product of:
            2.4961398 = idf(docFreq=9949, maxDocs=44421)
            0.0073864465 = queryNorm
          0.19501092 = fieldWeight in 5249, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            2.4961398 = idf(docFreq=9949, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
      0.016824571 = weight(abstract_txt:retrieval in 5249) [ClassicSimilarity], result of:
        0.016824571 = score(doc=5249,freq=3.0), product of:
          0.035764415 = queryWeight, product of:
            1.3927505 = boost
            3.4765 = idf(docFreq=3732, maxDocs=44421)
            0.0073864465 = queryNorm
          0.4704277 = fieldWeight in 5249, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            3.4765 = idf(docFreq=3732, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
      0.015286125 = weight(abstract_txt:terms in 5249) [ClassicSimilarity], result of:
        0.015286125 = score(doc=5249,freq=1.0), product of:
          0.048386827 = queryWeight, product of:
            1.6199863 = boost
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.0073864465 = queryNorm
          0.31591502 = fieldWeight in 5249, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
      0.04558738 = weight(abstract_txt:performance in 5249) [ClassicSimilarity], result of:
        0.04558738 = score(doc=5249,freq=4.0), product of:
          0.063154645 = queryWeight, product of:
            1.8507614 = boost
            4.619759 = idf(docFreq=1189, maxDocs=44421)
            0.0073864465 = queryNorm
          0.72183734 = fieldWeight in 5249, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.619759 = idf(docFreq=1189, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
      0.044137243 = weight(abstract_txt:term in 5249) [ClassicSimilarity], result of:
        0.044137243 = score(doc=5249,freq=3.0), product of:
          0.06802866 = queryWeight, product of:
            1.9208512 = boost
            4.794713 = idf(docFreq=998, maxDocs=44421)
            0.0073864465 = queryNorm
          0.64880365 = fieldWeight in 5249, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            4.794713 = idf(docFreq=998, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
      0.032425355 = weight(abstract_txt:automatic in 5249) [ClassicSimilarity], result of:
        0.032425355 = score(doc=5249,freq=1.0), product of:
          0.07988257 = queryWeight, product of:
            2.0814874 = boost
            5.1956835 = idf(docFreq=668, maxDocs=44421)
            0.0073864465 = queryNorm
          0.40591276 = fieldWeight in 5249, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.1956835 = idf(docFreq=668, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
      0.03967747 = weight(abstract_txt:interactive in 5249) [ClassicSimilarity], result of:
        0.03967747 = score(doc=5249,freq=1.0), product of:
          0.091388494 = queryWeight, product of:
            2.2263505 = boost
            5.557282 = idf(docFreq=465, maxDocs=44421)
            0.0073864465 = queryNorm
          0.43416265 = fieldWeight in 5249, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.557282 = idf(docFreq=465, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
      0.34785402 = weight(abstract_txt:query in 5249) [ClassicSimilarity], result of:
        0.34785402 = score(doc=5249,freq=4.0), product of:
          0.46824473 = queryWeight, product of:
            13.333164 = boost
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.0073864465 = queryNorm
          0.74288934 = fieldWeight in 5249, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
      0.824084 = weight(abstract_txt:expansion in 5249) [ClassicSimilarity], result of:
        0.824084 = score(doc=5249,freq=5.0), product of:
          0.7724775 = queryWeight, product of:
            17.12536 = boost
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.0073864465 = queryNorm
          1.0668064 = fieldWeight in 5249, product of:
            2.236068 = tf(freq=5.0), with freq of:
              5.0 = termFreq=5.0
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.078125 = fieldNorm(doc=5249)
    0.36 = coord(9/25)
  4. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬An evaluation of interactive query expansion in an online library catalogue with a graphical user interface (1995) 0.49 
    0.48690614 = sum of:
  0.48690614 = product of:
    1.352517 = sum of:
      0.016484646 = weight(abstract_txt:retrieval in 1734) [ClassicSimilarity], result of:
        0.016484646 = score(doc=1734,freq=2.0), product of:
          0.035764415 = queryWeight, product of:
            1.3927505 = boost
            3.4765 = idf(docFreq=3732, maxDocs=44421)
            0.0073864465 = queryNorm
          0.46092314 = fieldWeight in 1734, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.4765 = idf(docFreq=3732, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
      0.025941415 = weight(abstract_txt:terms in 1734) [ClassicSimilarity], result of:
        0.025941415 = score(doc=1734,freq=2.0), product of:
          0.048386827 = queryWeight, product of:
            1.6199863 = boost
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.0073864465 = queryNorm
          0.53612554 = fieldWeight in 1734, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
      0.01841434 = weight(abstract_txt:process in 1734) [ClassicSimilarity], result of:
        0.01841434 = score(doc=1734,freq=1.0), product of:
          0.048511587 = queryWeight, product of:
            1.6220734 = boost
            4.048922 = idf(docFreq=2105, maxDocs=44421)
            0.0073864465 = queryNorm
          0.37958646 = fieldWeight in 1734, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.048922 = idf(docFreq=2105, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
      0.02735243 = weight(abstract_txt:performance in 1734) [ClassicSimilarity], result of:
        0.02735243 = score(doc=1734,freq=1.0), product of:
          0.063154645 = queryWeight, product of:
            1.8507614 = boost
            4.619759 = idf(docFreq=1189, maxDocs=44421)
            0.0073864465 = queryNorm
          0.43310243 = fieldWeight in 1734, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.619759 = idf(docFreq=1189, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
      0.030579178 = weight(abstract_txt:term in 1734) [ClassicSimilarity], result of:
        0.030579178 = score(doc=1734,freq=1.0), product of:
          0.06802866 = queryWeight, product of:
            1.9208512 = boost
            4.794713 = idf(docFreq=998, maxDocs=44421)
            0.0073864465 = queryNorm
          0.44950435 = fieldWeight in 1734, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.794713 = idf(docFreq=998, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
      0.038910426 = weight(abstract_txt:automatic in 1734) [ClassicSimilarity], result of:
        0.038910426 = score(doc=1734,freq=1.0), product of:
          0.07988257 = queryWeight, product of:
            2.0814874 = boost
            5.1956835 = idf(docFreq=668, maxDocs=44421)
            0.0073864465 = queryNorm
          0.48709533 = fieldWeight in 1734, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.1956835 = idf(docFreq=668, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
      0.0673349 = weight(abstract_txt:interactive in 1734) [ClassicSimilarity], result of:
        0.0673349 = score(doc=1734,freq=2.0), product of:
          0.091388494 = queryWeight, product of:
            2.2263505 = boost
            5.557282 = idf(docFreq=465, maxDocs=44421)
            0.0073864465 = queryNorm
          0.7367984 = fieldWeight in 1734, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.557282 = idf(docFreq=465, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
      0.3615005 = weight(abstract_txt:query in 1734) [ClassicSimilarity], result of:
        0.3615005 = score(doc=1734,freq=3.0), product of:
          0.46824473 = queryWeight, product of:
            13.333164 = boost
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.0073864465 = queryNorm
          0.7720333 = fieldWeight in 1734, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
      0.7659992 = weight(abstract_txt:expansion in 1734) [ClassicSimilarity], result of:
        0.7659992 = score(doc=1734,freq=3.0), product of:
          0.7724775 = queryWeight, product of:
            17.12536 = boost
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.0073864465 = queryNorm
          0.99161357 = fieldWeight in 1734, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.09375 = fieldNorm(doc=1734)
    0.36 = coord(9/25)
  5. Selvaretnam, B.; Belkhatir, M.: ¬A linguistically driven framework for query expansion via grammatical constituent highlighting and role-based concept weighting (2016) 0.42 
    0.41876158 = sum of:
  0.41876158 = product of:
    1.30863 = sum of:
      0.013737205 = weight(abstract_txt:retrieval in 3876) [ClassicSimilarity], result of:
        0.013737205 = score(doc=3876,freq=2.0), product of:
          0.035764415 = queryWeight, product of:
            1.3927505 = boost
            3.4765 = idf(docFreq=3732, maxDocs=44421)
            0.0073864465 = queryNorm
          0.3841026 = fieldWeight in 3876, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.4765 = idf(docFreq=3732, maxDocs=44421)
            0.078125 = fieldNorm(doc=3876)
      0.015286125 = weight(abstract_txt:terms in 3876) [ClassicSimilarity], result of:
        0.015286125 = score(doc=3876,freq=1.0), product of:
          0.048386827 = queryWeight, product of:
            1.6199863 = boost
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.0073864465 = queryNorm
          0.31591502 = fieldWeight in 3876, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.043712 = idf(docFreq=2116, maxDocs=44421)
            0.078125 = fieldNorm(doc=3876)
      0.020354368 = weight(abstract_txt:order in 3876) [ClassicSimilarity], result of:
        0.020354368 = score(doc=3876,freq=1.0), product of:
          0.058564432 = queryWeight, product of:
            1.7822341 = boost
            4.448705 = idf(docFreq=1411, maxDocs=44421)
            0.0073864465 = queryNorm
          0.3475551 = fieldWeight in 3876, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.448705 = idf(docFreq=1411, maxDocs=44421)
            0.078125 = fieldNorm(doc=3876)
      0.02279369 = weight(abstract_txt:performance in 3876) [ClassicSimilarity], result of:
        0.02279369 = score(doc=3876,freq=1.0), product of:
          0.063154645 = queryWeight, product of:
            1.8507614 = boost
            4.619759 = idf(docFreq=1189, maxDocs=44421)
            0.0073864465 = queryNorm
          0.36091867 = fieldWeight in 3876, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.619759 = idf(docFreq=1189, maxDocs=44421)
            0.078125 = fieldNorm(doc=3876)
      0.028165717 = weight(abstract_txt:improve in 3876) [ClassicSimilarity], result of:
        0.028165717 = score(doc=3876,freq=1.0), product of:
          0.07272372 = queryWeight, product of:
            1.98603 = boost
            4.9574084 = idf(docFreq=848, maxDocs=44421)
            0.0073864465 = queryNorm
          0.38729754 = fieldWeight in 3876, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.9574084 = idf(docFreq=848, maxDocs=44421)
            0.078125 = fieldNorm(doc=3876)
      0.048179224 = weight(abstract_txt:presented in 3876) [ClassicSimilarity], result of:
        0.048179224 = score(doc=3876,freq=1.0), product of:
          0.13105252 = queryWeight, product of:
            3.770383 = boost
            4.7057014 = idf(docFreq=1091, maxDocs=44421)
            0.0073864465 = queryNorm
          0.36763293 = fieldWeight in 3876, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.7057014 = idf(docFreq=1091, maxDocs=44421)
            0.078125 = fieldNorm(doc=3876)
      0.521781 = weight(abstract_txt:query in 3876) [ClassicSimilarity], result of:
        0.521781 = score(doc=3876,freq=9.0), product of:
          0.46824473 = queryWeight, product of:
            13.333164 = boost
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.0073864465 = queryNorm
          1.114334 = fieldWeight in 3876, product of:
            3.0 = tf(freq=9.0), with freq of:
              9.0 = termFreq=9.0
            4.754492 = idf(docFreq=1039, maxDocs=44421)
            0.078125 = fieldNorm(doc=3876)
      0.6383326 = weight(abstract_txt:expansion in 3876) [ClassicSimilarity], result of:
        0.6383326 = score(doc=3876,freq=3.0), product of:
          0.7724775 = queryWeight, product of:
            17.12536 = boost
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.0073864465 = queryNorm
          0.8263446 = fieldWeight in 3876, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            6.106756 = idf(docFreq=268, maxDocs=44421)
            0.078125 = fieldNorm(doc=3876)
    0.32 = coord(8/25)