Document (#20159)

Author

Bollmann-Sdorra, P.
Raghavan, V.V.

Title

On the necessity of term dependence in a query space for weighted retrieval

Source

Journal of the American Society for Information Science. 49(1998) no.13, S.1161-1168

Year

1998

Abstract

In recent years, in the context of the vector space model, the view, held by many researchers, that documents, queries, terms, etc., are all elements of a common space has been challenged (Bollmann-Sdorra & Raghavan, 1993). In particular, it was noted that term independence has to be investigated in the context of user preferences and it was shown, through counterexamples, that term independence can hold in the document space, but not in the query space and vice versa. In this article, we continue the investigation of query and document spaces with respect to the property of term independence. We prove, under realistic assumptions, that requiring term independence to hold in the query space is inconsistent with the goal of achieving better performance by means of weighted retrieval. The result that term independence in the query space is undesirable is obtained without making any assumption about wjether or not the property of term independence holds in the document space. The results of this article reinforce our position that the properties of document and query spaces must be investigated separately, since the document and query spaces do not necessarily have the same properties

Similar documents (author)

1. Bollmann-Sdorra, P.; Raghavan, V.V.: On the delusiveness of adopting a common space for modelling IR objects : are queries documents? (1993) 5.42

   5.416754 = sum of:
     5.416754 = sum of:
       2.2038374 = weight(author_txt:raghavan in 6179) [ClassicSimilarity], result of:
         2.2038374 = score(doc=6179,freq=1.0), product of:
           0.61393875 = queryWeight, product of:
             8.20496 = idf(docFreq=32, maxDocs=44421)
             0.07482532 = queryNorm
           3.58967 = fieldWeight in 6179, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.20496 = idf(docFreq=32, maxDocs=44421)
             0.4375 = fieldNorm(doc=6179)
       3.2129164 = weight(author_txt:bollmann in 6179) [ClassicSimilarity], result of:
         3.2129164 = score(doc=6179,freq=1.0), product of:
           0.78935367 = queryWeight, product of:
             1.1338962 = boost
             9.303573 = idf(docFreq=10, maxDocs=44421)
             0.07482532 = queryNorm
           4.070313 = fieldWeight in 6179, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.303573 = idf(docFreq=10, maxDocs=44421)
             0.4375 = fieldNorm(doc=6179)
   

2. Raghavan, V.V.; Jung, G.S.; Bollmann, P.: ¬A critical investigation of recall and precision as measures of retrieval system performance (1989) 4.64

   4.642932 = sum of:
     4.642932 = sum of:
       1.8890035 = weight(author_txt:raghavan in 3674) [ClassicSimilarity], result of:
         1.8890035 = score(doc=3674,freq=1.0), product of:
           0.61393875 = queryWeight, product of:
             8.20496 = idf(docFreq=32, maxDocs=44421)
             0.07482532 = queryNorm
           3.07686 = fieldWeight in 3674, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.20496 = idf(docFreq=32, maxDocs=44421)
             0.375 = fieldNorm(doc=3674)
       2.7539284 = weight(author_txt:bollmann in 3674) [ClassicSimilarity], result of:
         2.7539284 = score(doc=3674,freq=1.0), product of:
           0.78935367 = queryWeight, product of:
             1.1338962 = boost
             9.303573 = idf(docFreq=10, maxDocs=44421)
             0.07482532 = queryNorm
           3.4888396 = fieldWeight in 3674, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.303573 = idf(docFreq=10, maxDocs=44421)
             0.375 = fieldNorm(doc=3674)
   

3. Bollmann, E.: Conspectus : ein Konzept zur Kooperation zwischen Bibliotheken (1989) 2.29

   2.2949405 = sum of:
     2.2949405 = product of:
       4.589881 = sum of:
         4.589881 = weight(author_txt:bollmann in 99) [ClassicSimilarity], result of:
           4.589881 = score(doc=99,freq=1.0), product of:
             0.78935367 = queryWeight, product of:
               1.1338962 = boost
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.07482532 = queryNorm
             5.814733 = fieldWeight in 99, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.625 = fieldNorm(doc=99)
       0.5 = coord(1/2)
   

4. Bollmann, P.: Probleme des Messens und Bewertens beim Information-Retrieval (1982) 2.29

   2.2949405 = sum of:
     2.2949405 = product of:
       4.589881 = sum of:
         4.589881 = weight(author_txt:bollmann in 495) [ClassicSimilarity], result of:
           4.589881 = score(doc=495,freq=1.0), product of:
             0.78935367 = queryWeight, product of:
               1.1338962 = boost
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.07482532 = queryNorm
             5.814733 = fieldWeight in 495, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.625 = fieldNorm(doc=495)
       0.5 = coord(1/2)
   

5. Bollmann-Sdorra, P.: Probleme der Validität bei Retrievaltests (1990) 1.84

   1.8359523 = sum of:
     1.8359523 = product of:
       3.6719046 = sum of:
         3.6719046 = weight(author_txt:bollmann in 5112) [ClassicSimilarity], result of:
           3.6719046 = score(doc=5112,freq=1.0), product of:
             0.78935367 = queryWeight, product of:
               1.1338962 = boost
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.07482532 = queryNorm
             4.6517863 = fieldWeight in 5112, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.303573 = idf(docFreq=10, maxDocs=44421)
               0.5 = fieldNorm(doc=5112)
       0.5 = coord(1/2)
   

Similar documents (content)

1. Bollmann-Sdorra, P.; Raghavan, V.V.: On the delusiveness of adopting a common space for modelling IR objects : are queries documents? (1993) 0.34

   0.33859706 = sum of:
     0.33859706 = product of:
       1.2092752 = sum of:
         0.055537533 = weight(abstract_txt:realistic in 6179) [ClassicSimilarity], result of:
           0.055537533 = score(doc=6179,freq=1.0), product of:
             0.09424892 = queryWeight, product of:
               1.0100737 = boost
               7.5425844 = idf(docFreq=63, maxDocs=44421)
               0.012370952 = queryNorm
             0.5892644 = fieldWeight in 6179, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.5425844 = idf(docFreq=63, maxDocs=44421)
               0.078125 = fieldNorm(doc=6179)
         0.025160002 = weight(abstract_txt:that in 6179) [ClassicSimilarity], result of:
           0.025160002 = score(doc=6179,freq=6.0), product of:
             0.05559372 = queryWeight, product of:
               1.9002177 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.012370952 = queryNorm
             0.45256913 = fieldWeight in 6179, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.078125 = fieldNorm(doc=6179)
         0.07246739 = weight(abstract_txt:document in 6179) [ClassicSimilarity], result of:
           0.07246739 = score(doc=6179,freq=2.0), product of:
             0.15274267 = queryWeight, product of:
               2.8752794 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.012370952 = queryNorm
             0.47444102 = fieldWeight in 6179, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.078125 = fieldNorm(doc=6179)
         0.13770552 = weight(abstract_txt:query in 6179) [ClassicSimilarity], result of:
           0.13770552 = score(doc=6179,freq=2.0), product of:
             0.2621454 = queryWeight, product of:
               4.4569216 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.012370952 = queryNorm
             0.52530205 = fieldWeight in 6179, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.078125 = fieldNorm(doc=6179)
         0.099864684 = weight(abstract_txt:term in 6179) [ClassicSimilarity], result of:
           0.099864684 = score(doc=6179,freq=1.0), product of:
             0.26659948 = queryWeight, product of:
               4.4946256 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.012370952 = queryNorm
             0.37458694 = fieldWeight in 6179, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.078125 = fieldNorm(doc=6179)
         0.42977923 = weight(abstract_txt:space in 6179) [ClassicSimilarity], result of:
           0.42977923 = score(doc=6179,freq=7.0), product of:
             0.38551942 = queryWeight, product of:
               5.7780724 = boost
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.012370952 = queryNorm
             1.1148057 = fieldWeight in 6179, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.078125 = fieldNorm(doc=6179)
         0.38876098 = weight(abstract_txt:independence in 6179) [ClassicSimilarity], result of:
           0.38876098 = score(doc=6179,freq=1.0), product of:
             0.6266968 = queryWeight, product of:
               6.3799787 = boost
               7.9402676 = idf(docFreq=42, maxDocs=44421)
               0.012370952 = queryNorm
             0.62033343 = fieldWeight in 6179, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9402676 = idf(docFreq=42, maxDocs=44421)
               0.078125 = fieldNorm(doc=6179)
       0.28 = coord(7/25)
   

2. Losee, R.M.: Comparing Boolean and probabilistic information retrieval systems across queries and disciplines (1997) 0.22

   0.22305895 = sum of:
     0.22305895 = product of:
       0.9294123 = sum of:
         0.06467087 = weight(abstract_txt:dependence in 778) [ClassicSimilarity], result of:
           0.06467087 = score(doc=778,freq=1.0), product of:
             0.09237837 = queryWeight, product of:
               7.467361 = idf(docFreq=68, maxDocs=44421)
               0.012370952 = queryNorm
             0.7000651 = fieldWeight in 778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.467361 = idf(docFreq=68, maxDocs=44421)
               0.09375 = fieldNorm(doc=778)
         0.012325833 = weight(abstract_txt:that in 778) [ClassicSimilarity], result of:
           0.012325833 = score(doc=778,freq=1.0), product of:
             0.05559372 = queryWeight, product of:
               1.9002177 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.012370952 = queryNorm
             0.22171268 = fieldWeight in 778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.09375 = fieldNorm(doc=778)
         0.061490618 = weight(abstract_txt:document in 778) [ClassicSimilarity], result of:
           0.061490618 = score(doc=778,freq=1.0), product of:
             0.15274267 = queryWeight, product of:
               2.8752794 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.012370952 = queryNorm
             0.40257657 = fieldWeight in 778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.09375 = fieldNorm(doc=778)
         0.116847016 = weight(abstract_txt:query in 778) [ClassicSimilarity], result of:
           0.116847016 = score(doc=778,freq=1.0), product of:
             0.2621454 = queryWeight, product of:
               4.4569216 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.012370952 = queryNorm
             0.4457336 = fieldWeight in 778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.09375 = fieldNorm(doc=778)
         0.20756485 = weight(abstract_txt:term in 778) [ClassicSimilarity], result of:
           0.20756485 = score(doc=778,freq=3.0), product of:
             0.26659948 = queryWeight, product of:
               4.4946256 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.012370952 = queryNorm
             0.77856433 = fieldWeight in 778, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.09375 = fieldNorm(doc=778)
         0.46651316 = weight(abstract_txt:independence in 778) [ClassicSimilarity], result of:
           0.46651316 = score(doc=778,freq=1.0), product of:
             0.6266968 = queryWeight, product of:
               6.3799787 = boost
               7.9402676 = idf(docFreq=42, maxDocs=44421)
               0.012370952 = queryNorm
             0.7444001 = fieldWeight in 778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9402676 = idf(docFreq=42, maxDocs=44421)
               0.09375 = fieldNorm(doc=778)
       0.24 = coord(6/25)
   

3. Dang, E.K.F.; Luk, R.W.P.; Allan, J.: Beyond bag-of-words : bigram-enhanced context-dependent term weights (2014) 0.20

   0.19760916 = sum of:
     0.19760916 = product of:
       0.705747 = sum of:
         0.029484145 = weight(abstract_txt:context in 2283) [ClassicSimilarity], result of:
           0.029484145 = score(doc=2283,freq=4.0), product of:
             0.062211256 = queryWeight, product of:
               1.1605513 = boost
               4.333128 = idf(docFreq=1584, maxDocs=44421)
               0.012370952 = queryNorm
             0.47393587 = fieldWeight in 2283, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.333128 = idf(docFreq=1584, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2283)
         0.0354329 = weight(abstract_txt:investigated in 2283) [ClassicSimilarity], result of:
           0.0354329 = score(doc=2283,freq=1.0), product of:
             0.11162662 = queryWeight, product of:
               1.5545824 = boost
               5.8043137 = idf(docFreq=363, maxDocs=44421)
               0.012370952 = queryNorm
             0.3174234 = fieldWeight in 2283, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8043137 = idf(docFreq=363, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2283)
         0.0124535635 = weight(abstract_txt:that in 2283) [ClassicSimilarity], result of:
           0.0124535635 = score(doc=2283,freq=3.0), product of:
             0.05559372 = queryWeight, product of:
               1.9002177 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.012370952 = queryNorm
             0.22401026 = fieldWeight in 2283, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2283)
         0.06212784 = weight(abstract_txt:document in 2283) [ClassicSimilarity], result of:
           0.06212784 = score(doc=2283,freq=3.0), product of:
             0.15274267 = queryWeight, product of:
               2.8752794 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.012370952 = queryNorm
             0.4067484 = fieldWeight in 2283, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2283)
         0.09639387 = weight(abstract_txt:query in 2283) [ClassicSimilarity], result of:
           0.09639387 = score(doc=2283,freq=2.0), product of:
             0.2621454 = queryWeight, product of:
               4.4569216 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.012370952 = queryNorm
             0.36771145 = fieldWeight in 2283, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2283)
         0.19772199 = weight(abstract_txt:term in 2283) [ClassicSimilarity], result of:
           0.19772199 = score(doc=2283,freq=8.0), product of:
             0.26659948 = queryWeight, product of:
               4.4946256 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.012370952 = queryNorm
             0.7416443 = fieldWeight in 2283, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2283)
         0.27213266 = weight(abstract_txt:independence in 2283) [ClassicSimilarity], result of:
           0.27213266 = score(doc=2283,freq=1.0), product of:
             0.6266968 = queryWeight, product of:
               6.3799787 = boost
               7.9402676 = idf(docFreq=42, maxDocs=44421)
               0.012370952 = queryNorm
             0.43423337 = fieldWeight in 2283, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9402676 = idf(docFreq=42, maxDocs=44421)
               0.0546875 = fieldNorm(doc=2283)
       0.28 = coord(7/25)
   

4. Newby, G.B.: Cognitive space and information space (2001) 0.17

   0.16539645 = sum of:
     0.16539645 = product of:
       0.6891519 = sum of:
         0.014196586 = weight(abstract_txt:article in 977) [ClassicSimilarity], result of:
           0.014196586 = score(doc=977,freq=1.0), product of:
             0.04782826 = queryWeight, product of:
               1.0175884 = boost
               3.79935 = idf(docFreq=2702, maxDocs=44421)
               0.012370952 = queryNorm
             0.29682422 = fieldWeight in 977, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.79935 = idf(docFreq=2702, maxDocs=44421)
               0.078125 = fieldNorm(doc=977)
         0.017790806 = weight(abstract_txt:that in 977) [ClassicSimilarity], result of:
           0.017790806 = score(doc=977,freq=3.0), product of:
             0.05559372 = queryWeight, product of:
               1.9002177 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.012370952 = queryNorm
             0.32001466 = fieldWeight in 977, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.078125 = fieldNorm(doc=977)
         0.3436163 = weight(abstract_txt:spaces in 977) [ClassicSimilarity], result of:
           0.3436163 = score(doc=977,freq=8.0), product of:
             0.22905771 = queryWeight, product of:
               2.7273943 = boost
               6.7888126 = idf(docFreq=135, maxDocs=44421)
               0.012370952 = queryNorm
             1.5001298 = fieldWeight in 977, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               6.7888126 = idf(docFreq=135, maxDocs=44421)
               0.078125 = fieldNorm(doc=977)
         0.05124218 = weight(abstract_txt:document in 977) [ClassicSimilarity], result of:
           0.05124218 = score(doc=977,freq=1.0), product of:
             0.15274267 = queryWeight, product of:
               2.8752794 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.012370952 = queryNorm
             0.33548045 = fieldWeight in 977, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.078125 = fieldNorm(doc=977)
         0.099864684 = weight(abstract_txt:term in 977) [ClassicSimilarity], result of:
           0.099864684 = score(doc=977,freq=1.0), product of:
             0.26659948 = queryWeight, product of:
               4.4946256 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.012370952 = queryNorm
             0.37458694 = fieldWeight in 977, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.078125 = fieldNorm(doc=977)
         0.1624413 = weight(abstract_txt:space in 977) [ClassicSimilarity], result of:
           0.1624413 = score(doc=977,freq=1.0), product of:
             0.38551942 = queryWeight, product of:
               5.7780724 = boost
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.012370952 = queryNorm
             0.42135698 = fieldWeight in 977, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.078125 = fieldNorm(doc=977)
       0.24 = coord(6/25)
   

5. Losee, R.M.: Evaluating retrieval performance given database and query characteristics : analytic determination of performance surfaces (1996) 0.16

   0.16091436 = sum of:
     0.16091436 = product of:
       0.8045718 = sum of:
         0.053892393 = weight(abstract_txt:dependence in 4230) [ClassicSimilarity], result of:
           0.053892393 = score(doc=4230,freq=1.0), product of:
             0.09237837 = queryWeight, product of:
               7.467361 = idf(docFreq=68, maxDocs=44421)
               0.012370952 = queryNorm
             0.58338755 = fieldWeight in 4230, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.467361 = idf(docFreq=68, maxDocs=44421)
               0.078125 = fieldNorm(doc=4230)
         0.05124218 = weight(abstract_txt:document in 4230) [ClassicSimilarity], result of:
           0.05124218 = score(doc=4230,freq=1.0), product of:
             0.15274267 = queryWeight, product of:
               2.8752794 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.012370952 = queryNorm
             0.33548045 = fieldWeight in 4230, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.078125 = fieldNorm(doc=4230)
         0.13770552 = weight(abstract_txt:query in 4230) [ClassicSimilarity], result of:
           0.13770552 = score(doc=4230,freq=2.0), product of:
             0.2621454 = queryWeight, product of:
               4.4569216 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.012370952 = queryNorm
             0.52530205 = fieldWeight in 4230, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.078125 = fieldNorm(doc=4230)
         0.17297071 = weight(abstract_txt:term in 4230) [ClassicSimilarity], result of:
           0.17297071 = score(doc=4230,freq=3.0), product of:
             0.26659948 = queryWeight, product of:
               4.4946256 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.012370952 = queryNorm
             0.64880365 = fieldWeight in 4230, 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=4230)
         0.38876098 = weight(abstract_txt:independence in 4230) [ClassicSimilarity], result of:
           0.38876098 = score(doc=4230,freq=1.0), product of:
             0.6266968 = queryWeight, product of:
               6.3799787 = boost
               7.9402676 = idf(docFreq=42, maxDocs=44421)
               0.012370952 = queryNorm
             0.62033343 = fieldWeight in 4230, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9402676 = idf(docFreq=42, maxDocs=44421)
               0.078125 = fieldNorm(doc=4230)
       0.2 = coord(5/25)