Document (#14872)

Author

Smith, M.P.
Pollitt, S.A.

Title

¬A comparison of ranking formulae and their ranks

Source

New review of document and text management. 1995, no.1, S.85-100

Year

1995

Abstract

Reports a study to compare the ranking produced by several well known probabilistic formulae. Values for the variables used in these formulae (collection frequency for a query term, number of relevant documents retrieved, and number of relevant documents retrieved, and number of relevant documents indexed by the query term) were derived using a random number generator, the number of documents in the collection was fixed at 500.000. This produced ranked bands for each formula using document term characteristics rather than actual documents. These rankings were compared with one another using the Spearman Rho ranked correlation co-efficient to determine how closely the algorithms rank documents. There is little difference in the rankings produced by the Expected Mutual Information measure EMIM and the simpler F4.5 weighting scheme

Theme

Retrievalalgorithmen

Similar documents (author)

1. Smith, M.P.; Pollitt, A.S.: Ranking and relevance feedback extensions to a view-based searching system (1995) 5.26

   5.2606983 = sum of:
     5.2606983 = sum of:
       1.6421831 = weight(author_txt:smith in 3924) [ClassicSimilarity], result of:
         1.6421831 = score(doc=3924,freq=1.0), product of:
           0.5085037 = queryWeight, product of:
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.07872935 = queryNorm
           3.229442 = fieldWeight in 3924, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.5 = fieldNorm(doc=3924)
       3.618515 = weight(author_txt:pollitt in 3924) [ClassicSimilarity], result of:
         3.618515 = score(doc=3924,freq=1.0), product of:
           0.8610598 = queryWeight, product of:
             1.3012766 = boost
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.07872935 = queryNorm
           4.202397 = fieldWeight in 3924, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.5 = fieldNorm(doc=3924)
   

2. Smith, M.P.; Pollitt, A.S.: ¬The potential for incorporating document ranking in the MenUSE front-end search internemdiary system (1996) 5.26

   5.2606983 = sum of:
     5.2606983 = sum of:
       1.6421831 = weight(author_txt:smith in 50) [ClassicSimilarity], result of:
         1.6421831 = score(doc=50,freq=1.0), product of:
           0.5085037 = queryWeight, product of:
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.07872935 = queryNorm
           3.229442 = fieldWeight in 50, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.5 = fieldNorm(doc=50)
       3.618515 = weight(author_txt:pollitt in 50) [ClassicSimilarity], result of:
         3.618515 = score(doc=50,freq=1.0), product of:
           0.8610598 = queryWeight, product of:
             1.3012766 = boost
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.07872935 = queryNorm
           4.202397 = fieldWeight in 50, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.5 = fieldNorm(doc=50)
   

3. Pollitt, A.S.; Ellis, G.P.; Smith, M.P.: HIBROWSE for bibliographic databases (1994) 3.95

   3.9455237 = sum of:
     3.9455237 = sum of:
       1.2316374 = weight(author_txt:smith in 1138) [ClassicSimilarity], result of:
         1.2316374 = score(doc=1138,freq=1.0), product of:
           0.5085037 = queryWeight, product of:
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.07872935 = queryNorm
           2.4220815 = fieldWeight in 1138, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.375 = fieldNorm(doc=1138)
       2.7138863 = weight(author_txt:pollitt in 1138) [ClassicSimilarity], result of:
         2.7138863 = score(doc=1138,freq=1.0), product of:
           0.8610598 = queryWeight, product of:
             1.3012766 = boost
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.07872935 = queryNorm
           3.1517978 = fieldWeight in 1138, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.375 = fieldNorm(doc=1138)
   

4. Pollitt, A.S.; Smith, M.P.; Ellis, G.P.: Peek-a-boo revived : end-user searching of bibliographic databases using filtering views (1994) 3.95

   3.9455237 = sum of:
     3.9455237 = sum of:
       1.2316374 = weight(author_txt:smith in 2006) [ClassicSimilarity], result of:
         1.2316374 = score(doc=2006,freq=1.0), product of:
           0.5085037 = queryWeight, product of:
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.07872935 = queryNorm
           2.4220815 = fieldWeight in 2006, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.375 = fieldNorm(doc=2006)
       2.7138863 = weight(author_txt:pollitt in 2006) [ClassicSimilarity], result of:
         2.7138863 = score(doc=2006,freq=1.0), product of:
           0.8610598 = queryWeight, product of:
             1.3012766 = boost
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.07872935 = queryNorm
           3.1517978 = fieldWeight in 2006, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.375 = fieldNorm(doc=2006)
   

5. Pollitt, A.S.; Ellis, G.P.; Smith, M.P.; Li, C.S.: HIBROWSE: adding the power of relational databases to the traditional IR architecture : the future for Graphic User Interfaces (1994) 3.29

   3.2879362 = sum of:
     3.2879362 = sum of:
       1.0263644 = weight(author_txt:smith in 3733) [ClassicSimilarity], result of:
         1.0263644 = score(doc=3733,freq=1.0), product of:
           0.5085037 = queryWeight, product of:
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.07872935 = queryNorm
           2.0184011 = fieldWeight in 3733, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.458884 = idf(docFreq=181, maxDocs=42740)
             0.3125 = fieldNorm(doc=3733)
       2.261572 = weight(author_txt:pollitt in 3733) [ClassicSimilarity], result of:
         2.261572 = score(doc=3733,freq=1.0), product of:
           0.8610598 = queryWeight, product of:
             1.3012766 = boost
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.07872935 = queryNorm
           2.626498 = fieldWeight in 3733, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.404794 = idf(docFreq=25, maxDocs=42740)
             0.3125 = fieldNorm(doc=3733)
   

Similar documents (content)

1. Ruthven, I.; Lalmas, M.; Rijsbergen, K. van: Combining and selecting characteristics of information use (2002) 0.36

   0.3622584 = sum of:
     0.3622584 = product of:
       0.754705 = sum of:
         0.058350235 = weight(abstract_txt:weighting in 209) [ClassicSimilarity], result of:
           0.058350235 = score(doc=209,freq=2.0), product of:
             0.12609088 = queryWeight, product of:
               1.0451359 = boost
               6.980759 = idf(docFreq=107, maxDocs=42740)
               0.017282568 = queryNorm
             0.4627633 = fieldWeight in 209, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.980759 = idf(docFreq=107, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.012209213 = weight(abstract_txt:were in 209) [ClassicSimilarity], result of:
           0.012209213 = score(doc=209,freq=1.0), product of:
             0.07054513 = queryWeight, product of:
               1.1055527 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017282568 = queryNorm
             0.17306954 = fieldWeight in 209, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.052584402 = weight(abstract_txt:ranks in 209) [ClassicSimilarity], result of:
           0.052584402 = score(doc=209,freq=1.0), product of:
             0.14821878 = queryWeight, product of:
               1.1331372 = boost
               7.568546 = idf(docFreq=59, maxDocs=42740)
               0.017282568 = queryNorm
             0.35477558 = fieldWeight in 209, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.568546 = idf(docFreq=59, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.024573512 = weight(abstract_txt:collection in 209) [ClassicSimilarity], result of:
           0.024573512 = score(doc=209,freq=1.0), product of:
             0.11245707 = queryWeight, product of:
               1.3958517 = boost
               4.661645 = idf(docFreq=1097, maxDocs=42740)
               0.017282568 = queryNorm
             0.2185146 = fieldWeight in 209, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.661645 = idf(docFreq=1097, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.06806298 = weight(abstract_txt:query in 209) [ClassicSimilarity], result of:
           0.06806298 = score(doc=209,freq=7.0), product of:
             0.11594444 = queryWeight, product of:
               1.4173297 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.017282568 = queryNorm
             0.587031 = fieldWeight in 209, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.015328119 = weight(abstract_txt:using in 209) [ClassicSimilarity], result of:
           0.015328119 = score(doc=209,freq=1.0), product of:
             0.093979165 = queryWeight, product of:
               1.5628141 = boost
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.017282568 = queryNorm
             0.16310124 = fieldWeight in 209, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.060217198 = weight(abstract_txt:ranking in 209) [ClassicSimilarity], result of:
           0.060217198 = score(doc=209,freq=2.0), product of:
             0.16223541 = queryWeight, product of:
               1.6765585 = boost
               5.5991054 = idf(docFreq=429, maxDocs=42740)
               0.017282568 = queryNorm
             0.37117174 = fieldWeight in 209, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5991054 = idf(docFreq=429, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.08972075 = weight(abstract_txt:ranked in 209) [ClassicSimilarity], result of:
           0.08972075 = score(doc=209,freq=2.0), product of:
             0.21163811 = queryWeight, product of:
               1.9148856 = boost
               6.3950324 = idf(docFreq=193, maxDocs=42740)
               0.017282568 = queryNorm
             0.42393476 = fieldWeight in 209, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.3950324 = idf(docFreq=193, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.07855425 = weight(abstract_txt:rankings in 209) [ClassicSimilarity], result of:
           0.07855425 = score(doc=209,freq=1.0), product of:
             0.24403664 = queryWeight, product of:
               2.0562382 = boost
               6.8671 = idf(docFreq=120, maxDocs=42740)
               0.017282568 = queryNorm
             0.3218953 = fieldWeight in 209, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.8671 = idf(docFreq=120, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.07329126 = weight(abstract_txt:relevant in 209) [ClassicSimilarity], result of:
           0.07329126 = score(doc=209,freq=4.0), product of:
             0.16803011 = queryWeight, product of:
               2.0897055 = boost
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.017282568 = queryNorm
             0.43617928 = fieldWeight in 209, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.10839334 = weight(abstract_txt:term in 209) [ClassicSimilarity], result of:
           0.10839334 = score(doc=209,freq=7.0), product of:
             0.18099841 = queryWeight, product of:
               2.168847 = boost
               4.8287816 = idf(docFreq=928, maxDocs=42740)
               0.017282568 = queryNorm
             0.5988635 = fieldWeight in 209, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               4.8287816 = idf(docFreq=928, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
         0.11341971 = weight(abstract_txt:documents in 209) [ClassicSimilarity], result of:
           0.11341971 = score(doc=209,freq=5.0), product of:
             0.2629368 = queryWeight, product of:
               3.6968532 = boost
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.017282568 = queryNorm
             0.43135732 = fieldWeight in 209, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.046875 = fieldNorm(doc=209)
       0.48 = coord(12/25)
   

2. Smith, M.P.; Pollitt, A.S.: Ranking and relevance feedback extensions to a view-based searching system (1995) 0.27

   0.27299118 = sum of:
     0.27299118 = product of:
       0.7583088 = sum of:
         0.063217156 = weight(abstract_txt:probabilistic in 3924) [ClassicSimilarity], result of:
           0.063217156 = score(doc=3924,freq=1.0), product of:
             0.119212754 = queryWeight, product of:
               1.0162306 = boost
               6.787693 = idf(docFreq=130, maxDocs=42740)
               0.017282568 = queryNorm
             0.5302885 = fieldWeight in 3924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.787693 = idf(docFreq=130, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
         0.020348689 = weight(abstract_txt:were in 3924) [ClassicSimilarity], result of:
           0.020348689 = score(doc=3924,freq=1.0), product of:
             0.07054513 = queryWeight, product of:
               1.1055527 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017282568 = queryNorm
             0.28844923 = fieldWeight in 3924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
         0.04287565 = weight(abstract_txt:query in 3924) [ClassicSimilarity], result of:
           0.04287565 = score(doc=3924,freq=1.0), product of:
             0.11594444 = queryWeight, product of:
               1.4173297 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.017282568 = queryNorm
             0.36979482 = fieldWeight in 3924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
         0.025546862 = weight(abstract_txt:using in 3924) [ClassicSimilarity], result of:
           0.025546862 = score(doc=3924,freq=1.0), product of:
             0.093979165 = queryWeight, product of:
               1.5628141 = boost
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.017282568 = queryNorm
             0.2718354 = fieldWeight in 3924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
         0.100361995 = weight(abstract_txt:ranking in 3924) [ClassicSimilarity], result of:
           0.100361995 = score(doc=3924,freq=2.0), product of:
             0.16223541 = queryWeight, product of:
               1.6765585 = boost
               5.5991054 = idf(docFreq=429, maxDocs=42740)
               0.017282568 = queryNorm
             0.61861956 = fieldWeight in 3924, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5991054 = idf(docFreq=429, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
         0.10573692 = weight(abstract_txt:ranked in 3924) [ClassicSimilarity], result of:
           0.10573692 = score(doc=3924,freq=1.0), product of:
             0.21163811 = queryWeight, product of:
               1.9148856 = boost
               6.3950324 = idf(docFreq=193, maxDocs=42740)
               0.017282568 = queryNorm
             0.4996119 = fieldWeight in 3924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.3950324 = idf(docFreq=193, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
         0.12215208 = weight(abstract_txt:relevant in 3924) [ClassicSimilarity], result of:
           0.12215208 = score(doc=3924,freq=4.0), product of:
             0.16803011 = queryWeight, product of:
               2.0897055 = boost
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.017282568 = queryNorm
             0.7269654 = fieldWeight in 3924, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
         0.07099437 = weight(abstract_txt:number in 3924) [ClassicSimilarity], result of:
           0.07099437 = score(doc=3924,freq=1.0), product of:
             0.22024465 = queryWeight, product of:
               3.0886493 = boost
               4.1259933 = idf(docFreq=1875, maxDocs=42740)
               0.017282568 = queryNorm
             0.32234323 = fieldWeight in 3924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1259933 = idf(docFreq=1875, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
         0.20707513 = weight(abstract_txt:documents in 3924) [ClassicSimilarity], result of:
           0.20707513 = score(doc=3924,freq=6.0), product of:
             0.2629368 = queryWeight, product of:
               3.6968532 = boost
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.017282568 = queryNorm
             0.7875472 = fieldWeight in 3924, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.078125 = fieldNorm(doc=3924)
       0.36 = coord(9/25)
   

3. Crouch, C.J.; Crouch, D.B.; Chen, Q.; Holtz, S.J.: Improving the retrieval effectiveness of very short queries (2002) 0.26

   0.2631526 = sum of:
     0.2631526 = product of:
       0.6578815 = sum of:
         0.07780031 = weight(abstract_txt:weighting in 3573) [ClassicSimilarity], result of:
           0.07780031 = score(doc=3573,freq=2.0), product of:
             0.12609088 = queryWeight, product of:
               1.0451359 = boost
               6.980759 = idf(docFreq=107, maxDocs=42740)
               0.017282568 = queryNorm
             0.61701775 = fieldWeight in 3573, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.980759 = idf(docFreq=107, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.01627895 = weight(abstract_txt:were in 3573) [ClassicSimilarity], result of:
           0.01627895 = score(doc=3573,freq=1.0), product of:
             0.07054513 = queryWeight, product of:
               1.1055527 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017282568 = queryNorm
             0.23075938 = fieldWeight in 3573, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.07011254 = weight(abstract_txt:ranks in 3573) [ClassicSimilarity], result of:
           0.07011254 = score(doc=3573,freq=1.0), product of:
             0.14821878 = queryWeight, product of:
               1.1331372 = boost
               7.568546 = idf(docFreq=59, maxDocs=42740)
               0.017282568 = queryNorm
             0.4730341 = fieldWeight in 3573, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.568546 = idf(docFreq=59, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.03276468 = weight(abstract_txt:collection in 3573) [ClassicSimilarity], result of:
           0.03276468 = score(doc=3573,freq=1.0), product of:
             0.11245707 = queryWeight, product of:
               1.3958517 = boost
               4.661645 = idf(docFreq=1097, maxDocs=42740)
               0.017282568 = queryNorm
             0.2913528 = fieldWeight in 3573, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.661645 = idf(docFreq=1097, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.048508264 = weight(abstract_txt:query in 3573) [ClassicSimilarity], result of:
           0.048508264 = score(doc=3573,freq=2.0), product of:
             0.11594444 = queryWeight, product of:
               1.4173297 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.017282568 = queryNorm
             0.41837507 = fieldWeight in 3573, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.028902978 = weight(abstract_txt:using in 3573) [ClassicSimilarity], result of:
           0.028902978 = score(doc=3573,freq=2.0), product of:
             0.093979165 = queryWeight, product of:
               1.5628141 = boost
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.017282568 = queryNorm
             0.30754665 = fieldWeight in 3573, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.084629446 = weight(abstract_txt:relevant in 3573) [ClassicSimilarity], result of:
           0.084629446 = score(doc=3573,freq=3.0), product of:
             0.16803011 = queryWeight, product of:
               2.0897055 = boost
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.017282568 = queryNorm
             0.50365645 = fieldWeight in 3573, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.083302505 = weight(abstract_txt:produced in 3573) [ClassicSimilarity], result of:
           0.083302505 = score(doc=3573,freq=1.0), product of:
             0.2398015 = queryWeight, product of:
               2.496419 = boost
               5.5580974 = idf(docFreq=447, maxDocs=42740)
               0.017282568 = queryNorm
             0.3473811 = fieldWeight in 3573, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5580974 = idf(docFreq=447, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.080320954 = weight(abstract_txt:number in 3573) [ClassicSimilarity], result of:
           0.080320954 = score(doc=3573,freq=2.0), product of:
             0.22024465 = queryWeight, product of:
               3.0886493 = boost
               4.1259933 = idf(docFreq=1875, maxDocs=42740)
               0.017282568 = queryNorm
             0.3646897 = fieldWeight in 3573, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.1259933 = idf(docFreq=1875, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
         0.1352609 = weight(abstract_txt:documents in 3573) [ClassicSimilarity], result of:
           0.1352609 = score(doc=3573,freq=4.0), product of:
             0.2629368 = queryWeight, product of:
               3.6968532 = boost
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.017282568 = queryNorm
             0.5144236 = fieldWeight in 3573, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.0625 = fieldNorm(doc=3573)
       0.4 = coord(10/25)
   

4. Efthimiadis, E.N.: Interactive query expansion : a user-based evaluation in a relevance feedback environment (2000) 0.22

   0.22283687 = sum of:
     0.22283687 = product of:
       0.61899126 = sum of:
         0.031850737 = weight(abstract_txt:were in 617) [ClassicSimilarity], result of:
           0.031850737 = score(doc=617,freq=5.0), product of:
             0.07054513 = queryWeight, product of:
               1.1055527 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017282568 = queryNorm
             0.45149446 = fieldWeight in 617, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
         0.028669098 = weight(abstract_txt:collection in 617) [ClassicSimilarity], result of:
           0.028669098 = score(doc=617,freq=1.0), product of:
             0.11245707 = queryWeight, product of:
               1.3958517 = boost
               4.661645 = idf(docFreq=1097, maxDocs=42740)
               0.017282568 = queryNorm
             0.2549337 = fieldWeight in 617, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.661645 = idf(docFreq=1097, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
         0.12374658 = weight(abstract_txt:query in 617) [ClassicSimilarity], result of:
           0.12374658 = score(doc=617,freq=17.0), product of:
             0.11594444 = queryWeight, product of:
               1.4173297 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.017282568 = queryNorm
             1.0672921 = fieldWeight in 617, product of:
               4.1231055 = tf(freq=17.0), with freq of:
                 17.0 = termFreq=17.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
         0.017882805 = weight(abstract_txt:using in 617) [ClassicSimilarity], result of:
           0.017882805 = score(doc=617,freq=1.0), product of:
             0.093979165 = queryWeight, product of:
               1.5628141 = boost
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.017282568 = queryNorm
             0.19028479 = fieldWeight in 617, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
         0.07401585 = weight(abstract_txt:ranked in 617) [ClassicSimilarity], result of:
           0.07401585 = score(doc=617,freq=1.0), product of:
             0.21163811 = queryWeight, product of:
               1.9148856 = boost
               6.3950324 = idf(docFreq=193, maxDocs=42740)
               0.017282568 = queryNorm
             0.34972835 = fieldWeight in 617, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.3950324 = idf(docFreq=193, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
         0.0604622 = weight(abstract_txt:relevant in 617) [ClassicSimilarity], result of:
           0.0604622 = score(doc=617,freq=2.0), product of:
             0.16803011 = queryWeight, product of:
               2.0897055 = boost
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.017282568 = queryNorm
             0.35982955 = fieldWeight in 617, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
         0.09559395 = weight(abstract_txt:term in 617) [ClassicSimilarity], result of:
           0.09559395 = score(doc=617,freq=4.0), product of:
             0.18099841 = queryWeight, product of:
               2.168847 = boost
               4.8287816 = idf(docFreq=928, maxDocs=42740)
               0.017282568 = queryNorm
             0.528148 = fieldWeight in 617, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.8287816 = idf(docFreq=928, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
         0.103081584 = weight(abstract_txt:produced in 617) [ClassicSimilarity], result of:
           0.103081584 = score(doc=617,freq=2.0), product of:
             0.2398015 = queryWeight, product of:
               2.496419 = boost
               5.5580974 = idf(docFreq=447, maxDocs=42740)
               0.017282568 = queryNorm
             0.42986214 = fieldWeight in 617, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5580974 = idf(docFreq=447, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
         0.083688416 = weight(abstract_txt:documents in 617) [ClassicSimilarity], result of:
           0.083688416 = score(doc=617,freq=2.0), product of:
             0.2629368 = queryWeight, product of:
               3.6968532 = boost
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.017282568 = queryNorm
             0.31828338 = fieldWeight in 617, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.0546875 = fieldNorm(doc=617)
       0.36 = coord(9/25)
   

5. López-Pujalte, C.; Guerrero-Bote, V.P.; Moya-Anegón, F. de: Order-based fitness functions for genetic algorithms applied to relevance feedback (2003) 0.22

   0.22260211 = sum of:
     0.22260211 = product of:
       0.6183392 = sum of:
         0.076843165 = weight(abstract_txt:fixed in 155) [ClassicSimilarity], result of:
           0.076843165 = score(doc=155,freq=2.0), product of:
             0.1366976 = queryWeight, product of:
               1.0882066 = boost
               7.268441 = idf(docFreq=80, maxDocs=42740)
               0.017282568 = queryNorm
             0.5621398 = fieldWeight in 155, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.268441 = idf(docFreq=80, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
         0.020144172 = weight(abstract_txt:were in 155) [ClassicSimilarity], result of:
           0.020144172 = score(doc=155,freq=2.0), product of:
             0.07054513 = queryWeight, product of:
               1.1055527 = boost
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.017282568 = queryNorm
             0.28555015 = fieldWeight in 155, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.69215 = idf(docFreq=2894, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
         0.040544227 = weight(abstract_txt:collection in 155) [ClassicSimilarity], result of:
           0.040544227 = score(doc=155,freq=2.0), product of:
             0.11245707 = queryWeight, product of:
               1.3958517 = boost
               4.661645 = idf(docFreq=1097, maxDocs=42740)
               0.017282568 = queryNorm
             0.3605307 = fieldWeight in 155, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.661645 = idf(docFreq=1097, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
         0.030012954 = weight(abstract_txt:query in 155) [ClassicSimilarity], result of:
           0.030012954 = score(doc=155,freq=1.0), product of:
             0.11594444 = queryWeight, product of:
               1.4173297 = boost
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.017282568 = queryNorm
             0.25885636 = fieldWeight in 155, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7333736 = idf(docFreq=1021, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
         0.025290105 = weight(abstract_txt:using in 155) [ClassicSimilarity], result of:
           0.025290105 = score(doc=155,freq=2.0), product of:
             0.093979165 = queryWeight, product of:
               1.5628141 = boost
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.017282568 = queryNorm
             0.26910332 = fieldWeight in 155, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4794931 = idf(docFreq=3580, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
         0.105068214 = weight(abstract_txt:retrieved in 155) [ClassicSimilarity], result of:
           0.105068214 = score(doc=155,freq=4.0), product of:
             0.16839854 = queryWeight, product of:
               1.708107 = boost
               5.704466 = idf(docFreq=386, maxDocs=42740)
               0.017282568 = queryNorm
             0.6239259 = fieldWeight in 155, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.704466 = idf(docFreq=386, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
         0.085506454 = weight(abstract_txt:relevant in 155) [ClassicSimilarity], result of:
           0.085506454 = score(doc=155,freq=4.0), product of:
             0.16803011 = queryWeight, product of:
               2.0897055 = boost
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.017282568 = queryNorm
             0.5088758 = fieldWeight in 155, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.652579 = idf(docFreq=1107, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
         0.047796976 = weight(abstract_txt:term in 155) [ClassicSimilarity], result of:
           0.047796976 = score(doc=155,freq=1.0), product of:
             0.18099841 = queryWeight, product of:
               2.168847 = boost
               4.8287816 = idf(docFreq=928, maxDocs=42740)
               0.017282568 = queryNorm
             0.264074 = fieldWeight in 155, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8287816 = idf(docFreq=928, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
         0.18713298 = weight(abstract_txt:documents in 155) [ClassicSimilarity], result of:
           0.18713298 = score(doc=155,freq=10.0), product of:
             0.2629368 = queryWeight, product of:
               3.6968532 = boost
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.017282568 = queryNorm
             0.7117033 = fieldWeight in 155, product of:
               3.1622777 = tf(freq=10.0), with freq of:
                 10.0 = termFreq=10.0
               4.115389 = idf(docFreq=1895, maxDocs=42740)
               0.0546875 = fieldNorm(doc=155)
       0.36 = coord(9/25)