Document (#2134)

Author
Smeaton, A.F.
Rijsbergen, C.J. van
Title
¬The retrieval effects of query expansion on a feedback document retrieval system
Source
Computer journal. 26(1983), S.239-246
Year
1983
Theme
Retrievalalgorithmen
Semantisches Umfeld in Indexierung u. Retrieval

Similar documents (author)

  1. Smeaton, A.F.: Prospects for intelligent, language-based information retrieval (1991) 1.95
    1.9478805 = sum of:
      1.9478805 = product of:
        3.895761 = sum of:
          3.895761 = weight(author_txt:smeaton in 3699) [ClassicSimilarity], result of:
            3.895761 = score(doc=3699,freq=1.0), product of:
              0.7239152 = queryWeight, product of:
                1.0243639 = boost
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.08207461 = queryNorm
              5.3815155 = fieldWeight in 3699, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.625 = fieldNorm(doc=3699)
        0.5 = coord(1/2)
    
  2. Smeaton, A.F.: Retrieving information from hypertext : issues and problems (1991) 1.95
    1.9478805 = sum of:
      1.9478805 = product of:
        3.895761 = sum of:
          3.895761 = weight(author_txt:smeaton in 4277) [ClassicSimilarity], result of:
            3.895761 = score(doc=4277,freq=1.0), product of:
              0.7239152 = queryWeight, product of:
                1.0243639 = boost
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.08207461 = queryNorm
              5.3815155 = fieldWeight in 4277, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.625 = fieldNorm(doc=4277)
        0.5 = coord(1/2)
    
  3. Smeaton, A.F.: Progress in the application of natural language processing to information retrieval tasks (1992) 1.95
    1.9478805 = sum of:
      1.9478805 = product of:
        3.895761 = sum of:
          3.895761 = weight(author_txt:smeaton in 7079) [ClassicSimilarity], result of:
            3.895761 = score(doc=7079,freq=1.0), product of:
              0.7239152 = queryWeight, product of:
                1.0243639 = boost
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.08207461 = queryNorm
              5.3815155 = fieldWeight in 7079, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.625 = fieldNorm(doc=7079)
        0.5 = coord(1/2)
    
  4. Smeaton, A.F.: Information retrieval and hypertext : competing technologies or complementary access methods (1992) 1.95
    1.9478805 = sum of:
      1.9478805 = product of:
        3.895761 = sum of:
          3.895761 = weight(author_txt:smeaton in 7502) [ClassicSimilarity], result of:
            3.895761 = score(doc=7502,freq=1.0), product of:
              0.7239152 = queryWeight, product of:
                1.0243639 = boost
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.08207461 = queryNorm
              5.3815155 = fieldWeight in 7502, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.625 = fieldNorm(doc=7502)
        0.5 = coord(1/2)
    
  5. Smeaton, A.F.: Natural language processing used in information retrieval tasks : an overview of achievements to date (1995) 1.95
    1.9478805 = sum of:
      1.9478805 = product of:
        3.895761 = sum of:
          3.895761 = weight(author_txt:smeaton in 1333) [ClassicSimilarity], result of:
            3.895761 = score(doc=1333,freq=1.0), product of:
              0.7239152 = queryWeight, product of:
                1.0243639 = boost
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.08207461 = queryNorm
              5.3815155 = fieldWeight in 1333, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.610425 = idf(docFreq=21, maxDocs=44421)
                0.625 = fieldNorm(doc=1333)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Lam-Adesina, A.M.; Jones, G.J.F.: Examining and improving the effectiveness of relevance feedback for retrieval of scanned text documents (2006) 1.26
    1.2589906 = sum of:
      1.2589906 = sum of:
        0.033412397 = weight(abstract_txt:system in 1977) [ClassicSimilarity], result of:
          0.033412397 = score(doc=1977,freq=1.0), product of:
            0.15850401 = queryWeight, product of:
              3.372775 = idf(docFreq=4140, maxDocs=44421)
              0.046995133 = queryNorm
            0.21079844 = fieldWeight in 1977, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              3.372775 = idf(docFreq=4140, maxDocs=44421)
              0.0625 = fieldNorm(doc=1977)
        0.11943668 = weight(abstract_txt:document in 1977) [ClassicSimilarity], result of:
          0.11943668 = score(doc=1977,freq=3.0), product of:
            0.256933 = queryWeight, product of:
              1.27318 = boost
              4.29415 = idf(docFreq=1647, maxDocs=44421)
              0.046995133 = queryNorm
            0.46485534 = fieldWeight in 1977, product of:
              1.7320508 = tf(freq=3.0), with freq of:
                3.0 = termFreq=3.0
              4.29415 = idf(docFreq=1647, maxDocs=44421)
              0.0625 = fieldNorm(doc=1977)
        0.1323649 = weight(abstract_txt:query in 1977) [ClassicSimilarity], result of:
          0.1323649 = score(doc=1977,freq=2.0), product of:
            0.3149733 = queryWeight, product of:
              1.4096676 = boost
              4.754492 = idf(docFreq=1039, maxDocs=44421)
              0.046995133 = queryNorm
            0.42024165 = fieldWeight in 1977, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.754492 = idf(docFreq=1039, maxDocs=44421)
              0.0625 = fieldNorm(doc=1977)
        0.14911744 = weight(abstract_txt:effects in 1977) [ClassicSimilarity], result of:
          0.14911744 = score(doc=1977,freq=1.0), product of:
            0.4296559 = queryWeight, product of:
              1.6464186 = boost
              5.5529995 = idf(docFreq=467, maxDocs=44421)
              0.046995133 = queryNorm
            0.34706247 = fieldWeight in 1977, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              5.5529995 = idf(docFreq=467, maxDocs=44421)
              0.0625 = fieldNorm(doc=1977)
        0.3649277 = weight(abstract_txt:feedback in 1977) [ClassicSimilarity], result of:
          0.3649277 = score(doc=1977,freq=4.0), product of:
            0.49153343 = queryWeight, product of:
              1.760988 = boost
              5.9394164 = idf(docFreq=317, maxDocs=44421)
              0.046995133 = queryNorm
            0.74242705 = fieldWeight in 1977, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.9394164 = idf(docFreq=317, maxDocs=44421)
              0.0625 = fieldNorm(doc=1977)
        0.28047377 = weight(abstract_txt:expansion in 1977) [ClassicSimilarity], result of:
          0.28047377 = score(doc=1977,freq=2.0), product of:
            0.51962095 = queryWeight, product of:
              1.8106029 = boost
              6.106756 = idf(docFreq=268, maxDocs=44421)
              0.046995133 = queryNorm
            0.5397661 = fieldWeight in 1977, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.106756 = idf(docFreq=268, maxDocs=44421)
              0.0625 = fieldNorm(doc=1977)
        0.17925772 = weight(abstract_txt:retrieval in 1977) [ClassicSimilarity], result of:
          0.17925772 = score(doc=1977,freq=6.0), product of:
            0.33680612 = queryWeight, product of:
              2.0615072 = boost
              3.4765 = idf(docFreq=3732, maxDocs=44421)
              0.046995133 = queryNorm
            0.53222823 = fieldWeight in 1977, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.4765 = idf(docFreq=3732, maxDocs=44421)
              0.0625 = fieldNorm(doc=1977)
    
  2. Srinivasan, P.: Query expansion and MEDLINE (1996) 1.01
    1.0060333 = sum of:
      1.0060333 = product of:
        1.4084466 = sum of:
          0.058471695 = weight(abstract_txt:system in 67) [ClassicSimilarity], result of:
            0.058471695 = score(doc=67,freq=1.0), product of:
              0.15850401 = queryWeight, product of:
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.046995133 = queryNorm
              0.36889726 = fieldWeight in 67, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
          0.28369817 = weight(abstract_txt:query in 67) [ClassicSimilarity], result of:
            0.28369817 = score(doc=67,freq=3.0), product of:
              0.3149733 = queryWeight, product of:
                1.4096676 = boost
                4.754492 = idf(docFreq=1039, maxDocs=44421)
                0.046995133 = queryNorm
              0.90070546 = fieldWeight in 67, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.754492 = idf(docFreq=1039, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
          0.31931177 = weight(abstract_txt:feedback in 67) [ClassicSimilarity], result of:
            0.31931177 = score(doc=67,freq=1.0), product of:
              0.49153343 = queryWeight, product of:
                1.760988 = boost
                5.9394164 = idf(docFreq=317, maxDocs=44421)
                0.046995133 = queryNorm
              0.6496237 = fieldWeight in 67, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9394164 = idf(docFreq=317, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
          0.49082908 = weight(abstract_txt:expansion in 67) [ClassicSimilarity], result of:
            0.49082908 = score(doc=67,freq=2.0), product of:
              0.51962095 = queryWeight, product of:
                1.8106029 = boost
                6.106756 = idf(docFreq=268, maxDocs=44421)
                0.046995133 = queryNorm
              0.9445906 = fieldWeight in 67, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.106756 = idf(docFreq=268, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
          0.2561358 = weight(abstract_txt:retrieval in 67) [ClassicSimilarity], result of:
            0.2561358 = score(doc=67,freq=4.0), product of:
              0.33680612 = queryWeight, product of:
                2.0615072 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.046995133 = queryNorm
              0.7604844 = fieldWeight in 67, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.109375 = fieldNorm(doc=67)
        0.71428573 = coord(5/7)
    
  3. Efthimiadis, E.N.: Interactive query expansion : a user-based evaluation in a relevance feedback environment (2000) 0.90
    0.90225506 = sum of:
      0.90225506 = product of:
        1.263157 = sum of:
          0.029235847 = weight(abstract_txt:system in 6701) [ClassicSimilarity], result of:
            0.029235847 = score(doc=6701,freq=1.0), product of:
              0.15850401 = queryWeight, product of:
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.046995133 = queryNorm
              0.18444863 = fieldWeight in 6701, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.0546875 = fieldNorm(doc=6701)
          0.33766836 = weight(abstract_txt:query in 6701) [ClassicSimilarity], result of:
            0.33766836 = score(doc=6701,freq=17.0), product of:
              0.3149733 = queryWeight, product of:
                1.4096676 = boost
                4.754492 = idf(docFreq=1039, maxDocs=44421)
                0.046995133 = 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)
          0.15965588 = weight(abstract_txt:feedback in 6701) [ClassicSimilarity], result of:
            0.15965588 = score(doc=6701,freq=1.0), product of:
              0.49153343 = queryWeight, product of:
                1.760988 = boost
                5.9394164 = idf(docFreq=317, maxDocs=44421)
                0.046995133 = queryNorm
              0.32481185 = fieldWeight in 6701, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9394164 = idf(docFreq=317, maxDocs=44421)
                0.0546875 = fieldNorm(doc=6701)
          0.6256868 = weight(abstract_txt:expansion in 6701) [ClassicSimilarity], result of:
            0.6256868 = score(doc=6701,freq=13.0), product of:
              0.51962095 = queryWeight, product of:
                1.8106029 = boost
                6.106756 = idf(docFreq=268, maxDocs=44421)
                0.046995133 = 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)
          0.11091005 = weight(abstract_txt:retrieval in 6701) [ClassicSimilarity], result of:
            0.11091005 = score(doc=6701,freq=3.0), product of:
              0.33680612 = queryWeight, product of:
                2.0615072 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.046995133 = 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)
        0.71428573 = coord(5/7)
    
  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) 0.88
    0.8839209 = sum of:
      0.8839209 = product of:
        1.2374892 = sum of:
          0.0501186 = weight(abstract_txt:system in 1734) [ClassicSimilarity], result of:
            0.0501186 = score(doc=1734,freq=1.0), product of:
              0.15850401 = queryWeight, product of:
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.046995133 = queryNorm
              0.31619766 = fieldWeight in 1734, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.09375 = fieldNorm(doc=1734)
          0.24316986 = weight(abstract_txt:query in 1734) [ClassicSimilarity], result of:
            0.24316986 = score(doc=1734,freq=3.0), product of:
              0.3149733 = queryWeight, product of:
                1.4096676 = boost
                4.754492 = idf(docFreq=1039, maxDocs=44421)
                0.046995133 = 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)
          0.27369577 = weight(abstract_txt:feedback in 1734) [ClassicSimilarity], result of:
            0.27369577 = score(doc=1734,freq=1.0), product of:
              0.49153343 = queryWeight, product of:
                1.760988 = boost
                5.9394164 = idf(docFreq=317, maxDocs=44421)
                0.046995133 = queryNorm
              0.5568203 = fieldWeight in 1734, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9394164 = idf(docFreq=317, maxDocs=44421)
                0.09375 = fieldNorm(doc=1734)
          0.5152632 = weight(abstract_txt:expansion in 1734) [ClassicSimilarity], result of:
            0.5152632 = score(doc=1734,freq=3.0), product of:
              0.51962095 = queryWeight, product of:
                1.8106029 = boost
                6.106756 = idf(docFreq=268, maxDocs=44421)
                0.046995133 = 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)
          0.15524173 = weight(abstract_txt:retrieval in 1734) [ClassicSimilarity], result of:
            0.15524173 = score(doc=1734,freq=2.0), product of:
              0.33680612 = queryWeight, product of:
                2.0615072 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.046995133 = 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)
        0.71428573 = coord(5/7)
    
  5. He, D.; Wu, D.: Enhancing query translation with relevance feedback in translingual information retrieval : a study of the medication process (2011) 0.88
    0.8809894 = sum of:
      0.8809894 = product of:
        1.2333851 = sum of:
          0.22926274 = weight(abstract_txt:query in 244) [ClassicSimilarity], result of:
            0.22926274 = score(doc=244,freq=6.0), product of:
              0.3149733 = queryWeight, product of:
                1.4096676 = boost
                4.754492 = idf(docFreq=1039, maxDocs=44421)
                0.046995133 = queryNorm
              0.72787994 = fieldWeight in 244, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.754492 = idf(docFreq=1039, maxDocs=44421)
                0.0625 = fieldNorm(doc=244)
          0.14911744 = weight(abstract_txt:effects in 244) [ClassicSimilarity], result of:
            0.14911744 = score(doc=244,freq=1.0), product of:
              0.4296559 = queryWeight, product of:
                1.6464186 = boost
                5.5529995 = idf(docFreq=467, maxDocs=44421)
                0.046995133 = queryNorm
              0.34706247 = fieldWeight in 244, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5529995 = idf(docFreq=467, maxDocs=44421)
                0.0625 = fieldNorm(doc=244)
          0.4080016 = weight(abstract_txt:feedback in 244) [ClassicSimilarity], result of:
            0.4080016 = score(doc=244,freq=5.0), product of:
              0.49153343 = queryWeight, product of:
                1.760988 = boost
                5.9394164 = idf(docFreq=317, maxDocs=44421)
                0.046995133 = queryNorm
              0.8300587 = fieldWeight in 244, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.9394164 = idf(docFreq=317, maxDocs=44421)
                0.0625 = fieldNorm(doc=244)
          0.34350878 = weight(abstract_txt:expansion in 244) [ClassicSimilarity], result of:
            0.34350878 = score(doc=244,freq=3.0), product of:
              0.51962095 = queryWeight, product of:
                1.8106029 = boost
                6.106756 = idf(docFreq=268, maxDocs=44421)
                0.046995133 = queryNorm
              0.6610757 = fieldWeight in 244, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.106756 = idf(docFreq=268, maxDocs=44421)
                0.0625 = fieldNorm(doc=244)
          0.10349449 = weight(abstract_txt:retrieval in 244) [ClassicSimilarity], result of:
            0.10349449 = score(doc=244,freq=2.0), product of:
              0.33680612 = queryWeight, product of:
                2.0615072 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.046995133 = queryNorm
              0.3072821 = fieldWeight in 244, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.0625 = fieldNorm(doc=244)
        0.71428573 = coord(5/7)