Document (#21509)

Author

Harman, D.

Title

Relevance feedback and other query modification techniques

Source

Information retrieval: data structures and algorithms. Ed.: W.B. Frakes u. R. Baeza-Yates

Imprint

Englewood Cliffs, NJ : Prentice Hall

Year

1992

Pages

S.241-263

Abstract

Presents a survey of relevance feedback techniques that have been used in past research, recommends various query modification approaches for use in different retrieval systems, and gives some guidelines for the efficient design of the relevance feedback component of a retrieval system

Theme

Retrievalalgorithmen

Similar documents (author)

1. Harman, D.: User-friendly systems instead of user-friendly front-ends (1992) 5.35

   5.353733 = sum of:
     5.353733 = weight(author_txt:harman in 3322) [ClassicSimilarity], result of:
       5.353733 = fieldWeight in 3322, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.565973 = idf(docFreq=22, maxDocs=44421)
         0.625 = fieldNorm(doc=3322)
   

2. Harman, D.: Automatic indexing (1994) 5.35

   5.353733 = sum of:
     5.353733 = weight(author_txt:harman in 7728) [ClassicSimilarity], result of:
       5.353733 = fieldWeight in 7728, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.565973 = idf(docFreq=22, maxDocs=44421)
         0.625 = fieldNorm(doc=7728)
   

3. Harman, D.: Overview of the first Text Retrieval Conference (1993) 5.35

   5.353733 = sum of:
     5.353733 = weight(author_txt:harman in 616) [ClassicSimilarity], result of:
       5.353733 = fieldWeight in 616, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.565973 = idf(docFreq=22, maxDocs=44421)
         0.625 = fieldNorm(doc=616)
   

4. Harman, D.: Overview of the Second Text Retrieval Conference : TREC-2 (1995) 5.35

   5.353733 = sum of:
     5.353733 = weight(author_txt:harman in 1983) [ClassicSimilarity], result of:
       5.353733 = fieldWeight in 1983, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.565973 = idf(docFreq=22, maxDocs=44421)
         0.625 = fieldNorm(doc=1983)
   

5. Harman, D.K.: ¬The TREC test collections (2005) 5.35

   5.353733 = sum of:
     5.353733 = weight(author_txt:harman in 4705) [ClassicSimilarity], result of:
       5.353733 = fieldWeight in 4705, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.565973 = idf(docFreq=22, maxDocs=44421)
         0.625 = fieldNorm(doc=4705)
   

Similar documents (content)

1. Kelly, D.: Implicit feedback : using behavior to infer relevance (2005) 0.43

   0.42535102 = sum of:
     0.42535102 = product of:
       0.9667069 = sum of:
         0.012586891 = weight(abstract_txt:have in 770) [ClassicSimilarity], result of:
           0.012586891 = score(doc=770,freq=3.0), product of:
             0.048456233 = queryWeight, product of:
               3.199388 = idf(docFreq=4924, maxDocs=44421)
               0.015145469 = queryNorm
             0.25975794 = fieldWeight in 770, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.199388 = idf(docFreq=4924, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.011874184 = weight(abstract_txt:used in 770) [ClassicSimilarity], result of:
           0.011874184 = score(doc=770,freq=2.0), product of:
             0.053354405 = queryWeight, product of:
               1.0493257 = boost
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.015145469 = queryNorm
             0.22255303 = fieldWeight in 770, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.012040215 = weight(abstract_txt:system in 770) [ClassicSimilarity], result of:
           0.012040215 = score(doc=770,freq=2.0), product of:
             0.053850606 = queryWeight, product of:
               1.0541939 = boost
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.015145469 = queryNorm
             0.2235855 = fieldWeight in 770, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.008807834 = weight(abstract_txt:systems in 770) [ClassicSimilarity], result of:
           0.008807834 = score(doc=770,freq=1.0), product of:
             0.055083793 = queryWeight, product of:
               1.0661961 = boost
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.015145469 = queryNorm
             0.15989883 = fieldWeight in 770, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.010478061 = weight(abstract_txt:been in 770) [ClassicSimilarity], result of:
           0.010478061 = score(doc=770,freq=1.0), product of:
             0.06184411 = queryWeight, product of:
               1.1297292 = boost
               3.614442 = idf(docFreq=3251, maxDocs=44421)
               0.015145469 = queryNorm
             0.16942698 = fieldWeight in 770, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.614442 = idf(docFreq=3251, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.011045731 = weight(abstract_txt:some in 770) [ClassicSimilarity], result of:
           0.011045731 = score(doc=770,freq=1.0), product of:
             0.0640581 = queryWeight, product of:
               1.1497732 = boost
               3.6785707 = idf(docFreq=3049, maxDocs=44421)
               0.015145469 = queryNorm
             0.172433 = fieldWeight in 770, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6785707 = idf(docFreq=3049, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.026371133 = weight(abstract_txt:retrieval in 770) [ClassicSimilarity], result of:
           0.026371133 = score(doc=770,freq=2.0), product of:
             0.11442746 = queryWeight, product of:
               2.173228 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.015145469 = queryNorm
             0.23046157 = fieldWeight in 770, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.058425914 = weight(abstract_txt:techniques in 770) [ClassicSimilarity], result of:
           0.058425914 = score(doc=770,freq=2.0), product of:
             0.19446798 = queryWeight, product of:
               2.833115 = boost
               4.5321174 = idf(docFreq=1298, maxDocs=44421)
               0.015145469 = queryNorm
             0.30043977 = fieldWeight in 770, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.5321174 = idf(docFreq=1298, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.047697917 = weight(abstract_txt:query in 770) [ClassicSimilarity], result of:
           0.047697917 = score(doc=770,freq=1.0), product of:
             0.21401983 = queryWeight, product of:
               2.9721258 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.015145469 = queryNorm
             0.2228668 = fieldWeight in 770, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.26447937 = weight(abstract_txt:relevance in 770) [ClassicSimilarity], result of:
           0.26447937 = score(doc=770,freq=11.0), product of:
             0.3451028 = queryWeight, product of:
               4.62232 = boost
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.015145469 = queryNorm
             0.7663785 = fieldWeight in 770, product of:
               3.3166249 = tf(freq=11.0), with freq of:
                 11.0 = termFreq=11.0
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
         0.50289965 = weight(abstract_txt:feedback in 770) [ClassicSimilarity], result of:
           0.50289965 = score(doc=770,freq=13.0), product of:
             0.5009849 = queryWeight, product of:
               5.5692677 = boost
               5.9394164 = idf(docFreq=317, maxDocs=44421)
               0.015145469 = queryNorm
             1.003822 = fieldWeight in 770, product of:
               3.6055512 = tf(freq=13.0), with freq of:
                 13.0 = termFreq=13.0
               5.9394164 = idf(docFreq=317, maxDocs=44421)
               0.046875 = fieldNorm(doc=770)
       0.44 = coord(11/25)
   

2. Spink, A.; Losee, R.M.: Feedback in information retrieval (1996) 0.42

   0.41577548 = sum of:
     0.41577548 = product of:
       1.2992984 = sum of:
         0.016792633 = weight(abstract_txt:used in 510) [ClassicSimilarity], result of:
           0.016792633 = score(doc=510,freq=1.0), product of:
             0.053354405 = queryWeight, product of:
               1.0493257 = boost
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.015145469 = queryNorm
             0.3147375 = fieldWeight in 510, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.09375 = fieldNorm(doc=510)
         0.021753807 = weight(abstract_txt:different in 510) [ClassicSimilarity], result of:
           0.021753807 = score(doc=510,freq=1.0), product of:
             0.0634037 = queryWeight, product of:
               1.1438853 = boost
               3.6597328 = idf(docFreq=3107, maxDocs=44421)
               0.015145469 = queryNorm
             0.34309995 = fieldWeight in 510, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6597328 = idf(docFreq=3107, maxDocs=44421)
               0.09375 = fieldNorm(doc=510)
         0.03526097 = weight(abstract_txt:presents in 510) [ClassicSimilarity], result of:
           0.03526097 = score(doc=510,freq=1.0), product of:
             0.0874891 = queryWeight, product of:
               1.3436995 = boost
               4.299016 = idf(docFreq=1639, maxDocs=44421)
               0.015145469 = queryNorm
             0.40303275 = fieldWeight in 510, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.299016 = idf(docFreq=1639, maxDocs=44421)
               0.09375 = fieldNorm(doc=510)
         0.04314547 = weight(abstract_txt:approaches in 510) [ClassicSimilarity], result of:
           0.04314547 = score(doc=510,freq=1.0), product of:
             0.10008782 = queryWeight, product of:
               1.4371953 = boost
               4.5981455 = idf(docFreq=1215, maxDocs=44421)
               0.015145469 = queryNorm
             0.43107614 = fieldWeight in 510, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5981455 = idf(docFreq=1215, maxDocs=44421)
               0.09375 = fieldNorm(doc=510)
         0.037294414 = weight(abstract_txt:retrieval in 510) [ClassicSimilarity], result of:
           0.037294414 = score(doc=510,freq=1.0), product of:
             0.11442746 = queryWeight, product of:
               2.173228 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.015145469 = queryNorm
             0.3259219 = fieldWeight in 510, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.09375 = fieldNorm(doc=510)
         0.082626715 = weight(abstract_txt:techniques in 510) [ClassicSimilarity], result of:
           0.082626715 = score(doc=510,freq=1.0), product of:
             0.19446798 = queryWeight, product of:
               2.833115 = boost
               4.5321174 = idf(docFreq=1298, maxDocs=44421)
               0.015145469 = queryNorm
             0.424886 = fieldWeight in 510, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5321174 = idf(docFreq=1298, maxDocs=44421)
               0.09375 = fieldNorm(doc=510)
         0.22554874 = weight(abstract_txt:relevance in 510) [ClassicSimilarity], result of:
           0.22554874 = score(doc=510,freq=2.0), product of:
             0.3451028 = queryWeight, product of:
               4.62232 = boost
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.015145469 = queryNorm
             0.65356976 = fieldWeight in 510, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.09375 = fieldNorm(doc=510)
         0.8368757 = weight(abstract_txt:feedback in 510) [ClassicSimilarity], result of:
           0.8368757 = score(doc=510,freq=9.0), product of:
             0.5009849 = queryWeight, product of:
               5.5692677 = boost
               5.9394164 = idf(docFreq=317, maxDocs=44421)
               0.015145469 = queryNorm
             1.6704608 = fieldWeight in 510, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               5.9394164 = idf(docFreq=317, maxDocs=44421)
               0.09375 = fieldNorm(doc=510)
       0.32 = coord(8/25)
   

3. Meij, E.; Trieschnigg, D.; Rijke, M. de; Kraaij, W.: Conceptual language models for domain-specific retrieval (2010) 0.41

   0.4144913 = sum of:
     0.4144913 = product of:
       0.94202566 = sum of:
         0.01370287 = weight(abstract_txt:have in 238) [ClassicSimilarity], result of:
           0.01370287 = score(doc=238,freq=2.0), product of:
             0.048456233 = queryWeight, product of:
               3.199388 = idf(docFreq=4924, maxDocs=44421)
               0.015145469 = queryNorm
             0.2827886 = fieldWeight in 238, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.199388 = idf(docFreq=4924, maxDocs=44421)
               0.0625 = fieldNorm(doc=238)
         0.015832245 = weight(abstract_txt:used in 238) [ClassicSimilarity], result of:
           0.015832245 = score(doc=238,freq=2.0), product of:
             0.053354405 = queryWeight, product of:
               1.0493257 = boost
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.015145469 = queryNorm
             0.29673737 = fieldWeight in 238, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.0625 = fieldNorm(doc=238)
         0.012888911 = weight(abstract_txt:other in 238) [ClassicSimilarity], result of:
           0.012888911 = score(doc=238,freq=1.0), product of:
             0.05860879 = queryWeight, product of:
               1.0997819 = boost
               3.5186288 = idf(docFreq=3578, maxDocs=44421)
               0.015145469 = queryNorm
             0.2199143 = fieldWeight in 238, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5186288 = idf(docFreq=3578, maxDocs=44421)
               0.0625 = fieldNorm(doc=238)
         0.013970748 = weight(abstract_txt:been in 238) [ClassicSimilarity], result of:
           0.013970748 = score(doc=238,freq=1.0), product of:
             0.06184411 = queryWeight, product of:
               1.1297292 = boost
               3.614442 = idf(docFreq=3251, maxDocs=44421)
               0.015145469 = queryNorm
             0.22590263 = fieldWeight in 238, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.614442 = idf(docFreq=3251, maxDocs=44421)
               0.0625 = fieldNorm(doc=238)
         0.014727642 = weight(abstract_txt:some in 238) [ClassicSimilarity], result of:
           0.014727642 = score(doc=238,freq=1.0), product of:
             0.0640581 = queryWeight, product of:
               1.1497732 = boost
               3.6785707 = idf(docFreq=3049, maxDocs=44421)
               0.015145469 = queryNorm
             0.22991067 = fieldWeight in 238, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6785707 = idf(docFreq=3049, maxDocs=44421)
               0.0625 = fieldNorm(doc=238)
         0.024990289 = weight(abstract_txt:various in 238) [ClassicSimilarity], result of:
           0.024990289 = score(doc=238,freq=1.0), product of:
             0.091130994 = queryWeight, product of:
               1.3713813 = boost
               4.387581 = idf(docFreq=1500, maxDocs=44421)
               0.015145469 = queryNorm
             0.2742238 = fieldWeight in 238, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.387581 = idf(docFreq=1500, maxDocs=44421)
               0.0625 = fieldNorm(doc=238)
         0.04527665 = weight(abstract_txt:gives in 238) [ClassicSimilarity], result of:
           0.04527665 = score(doc=238,freq=1.0), product of:
             0.1354362 = queryWeight, product of:
               1.6718317 = boost
               5.3488383 = idf(docFreq=573, maxDocs=44421)
               0.015145469 = queryNorm
             0.3343024 = fieldWeight in 238, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3488383 = idf(docFreq=573, maxDocs=44421)
               0.0625 = fieldNorm(doc=238)
         0.03516151 = weight(abstract_txt:retrieval in 238) [ClassicSimilarity], result of:
           0.03516151 = score(doc=238,freq=2.0), product of:
             0.11442746 = queryWeight, product of:
               2.173228 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.015145469 = queryNorm
             0.3072821 = fieldWeight in 238, 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=238)
         0.15578075 = weight(abstract_txt:query in 238) [ClassicSimilarity], result of:
           0.15578075 = score(doc=238,freq=6.0), product of:
             0.21401983 = queryWeight, product of:
               2.9721258 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.015145469 = queryNorm
             0.72787994 = fieldWeight in 238, 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=238)
         0.23774926 = weight(abstract_txt:relevance in 238) [ClassicSimilarity], result of:
           0.23774926 = score(doc=238,freq=5.0), product of:
             0.3451028 = queryWeight, product of:
               4.62232 = boost
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.015145469 = queryNorm
             0.68892306 = fieldWeight in 238, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.0625 = fieldNorm(doc=238)
         0.37194476 = weight(abstract_txt:feedback in 238) [ClassicSimilarity], result of:
           0.37194476 = score(doc=238,freq=4.0), product of:
             0.5009849 = queryWeight, product of:
               5.5692677 = boost
               5.9394164 = idf(docFreq=317, maxDocs=44421)
               0.015145469 = queryNorm
             0.74242705 = fieldWeight in 238, 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=238)
       0.44 = coord(11/25)
   

4. Larson, R.R.: Information retrieval systems (2009) 0.40

   0.404451 = sum of:
     0.404451 = product of:
       0.7777904 = sum of:
         0.017128589 = weight(abstract_txt:have in 804) [ClassicSimilarity], result of:
           0.017128589 = score(doc=804,freq=2.0), product of:
             0.048456233 = queryWeight, product of:
               3.199388 = idf(docFreq=4924, maxDocs=44421)
               0.015145469 = queryNorm
             0.35348576 = fieldWeight in 804, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.199388 = idf(docFreq=4924, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.019790309 = weight(abstract_txt:used in 804) [ClassicSimilarity], result of:
           0.019790309 = score(doc=804,freq=2.0), product of:
             0.053354405 = queryWeight, product of:
               1.0493257 = boost
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.015145469 = queryNorm
             0.37092173 = fieldWeight in 804, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.025426026 = weight(abstract_txt:systems in 804) [ClassicSimilarity], result of:
           0.025426026 = score(doc=804,freq=3.0), product of:
             0.055083793 = queryWeight, product of:
               1.0661961 = boost
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.015145469 = queryNorm
             0.46158817 = fieldWeight in 804, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.017463434 = weight(abstract_txt:been in 804) [ClassicSimilarity], result of:
           0.017463434 = score(doc=804,freq=1.0), product of:
             0.06184411 = queryWeight, product of:
               1.1297292 = boost
               3.614442 = idf(docFreq=3251, maxDocs=44421)
               0.015145469 = queryNorm
             0.2823783 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.614442 = idf(docFreq=3251, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.01840955 = weight(abstract_txt:some in 804) [ClassicSimilarity], result of:
           0.01840955 = score(doc=804,freq=1.0), product of:
             0.0640581 = queryWeight, product of:
               1.1497732 = boost
               3.6785707 = idf(docFreq=3049, maxDocs=44421)
               0.015145469 = queryNorm
             0.28738832 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6785707 = idf(docFreq=3049, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.022247447 = weight(abstract_txt:design in 804) [ClassicSimilarity], result of:
           0.022247447 = score(doc=804,freq=1.0), product of:
             0.072677284 = queryWeight, product of:
               1.2246853 = boost
               3.9182436 = idf(docFreq=2399, maxDocs=44421)
               0.015145469 = queryNorm
             0.3061128 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9182436 = idf(docFreq=2399, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.035954557 = weight(abstract_txt:approaches in 804) [ClassicSimilarity], result of:
           0.035954557 = score(doc=804,freq=1.0), product of:
             0.10008782 = queryWeight, product of:
               1.4371953 = boost
               4.5981455 = idf(docFreq=1215, maxDocs=44421)
               0.015145469 = queryNorm
             0.3592301 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5981455 = idf(docFreq=1215, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.06369517 = weight(abstract_txt:past in 804) [ClassicSimilarity], result of:
           0.06369517 = score(doc=804,freq=1.0), product of:
             0.14653778 = queryWeight, product of:
               1.7390015 = boost
               5.5637407 = idf(docFreq=462, maxDocs=44421)
               0.015145469 = queryNorm
             0.43466723 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5637407 = idf(docFreq=462, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.043951888 = weight(abstract_txt:retrieval in 804) [ClassicSimilarity], result of:
           0.043951888 = score(doc=804,freq=2.0), product of:
             0.11442746 = queryWeight, product of:
               2.173228 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.015145469 = queryNorm
             0.3841026 = fieldWeight in 804, 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=804)
         0.068855606 = weight(abstract_txt:techniques in 804) [ClassicSimilarity], result of:
           0.068855606 = score(doc=804,freq=1.0), product of:
             0.19446798 = queryWeight, product of:
               2.833115 = boost
               4.5321174 = idf(docFreq=1298, maxDocs=44421)
               0.015145469 = queryNorm
             0.35407168 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5321174 = idf(docFreq=1298, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.079496525 = weight(abstract_txt:query in 804) [ClassicSimilarity], result of:
           0.079496525 = score(doc=804,freq=1.0), product of:
             0.21401983 = queryWeight, product of:
               2.9721258 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.015145469 = queryNorm
             0.37144467 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.13290587 = weight(abstract_txt:relevance in 804) [ClassicSimilarity], result of:
           0.13290587 = score(doc=804,freq=1.0), product of:
             0.3451028 = queryWeight, product of:
               4.62232 = boost
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.015145469 = queryNorm
             0.38511968 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
         0.23246548 = weight(abstract_txt:feedback in 804) [ClassicSimilarity], result of:
           0.23246548 = score(doc=804,freq=1.0), product of:
             0.5009849 = queryWeight, product of:
               5.5692677 = boost
               5.9394164 = idf(docFreq=317, maxDocs=44421)
               0.015145469 = queryNorm
             0.4640169 = fieldWeight in 804, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9394164 = idf(docFreq=317, maxDocs=44421)
               0.078125 = fieldNorm(doc=804)
       0.52 = coord(13/25)
   

5. Kelley, D.: Relevance feedback : getting to know your user (2008) 0.37

   0.3720859 = sum of:
     0.3720859 = product of:
       0.9302147 = sum of:
         0.011195089 = weight(abstract_txt:used in 2924) [ClassicSimilarity], result of:
           0.011195089 = score(doc=2924,freq=1.0), product of:
             0.053354405 = queryWeight, product of:
               1.0493257 = boost
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.015145469 = queryNorm
             0.20982501 = fieldWeight in 2924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3572001 = idf(docFreq=4205, maxDocs=44421)
               0.0625 = fieldNorm(doc=2924)
         0.016053619 = weight(abstract_txt:system in 2924) [ClassicSimilarity], result of:
           0.016053619 = score(doc=2924,freq=2.0), product of:
             0.053850606 = queryWeight, product of:
               1.0541939 = boost
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.015145469 = queryNorm
             0.298114 = fieldWeight in 2924, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.0625 = fieldNorm(doc=2924)
         0.011743778 = weight(abstract_txt:systems in 2924) [ClassicSimilarity], result of:
           0.011743778 = score(doc=2924,freq=1.0), product of:
             0.055083793 = queryWeight, product of:
               1.0661961 = boost
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.015145469 = queryNorm
             0.21319844 = fieldWeight in 2924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.0625 = fieldNorm(doc=2924)
         0.013970748 = weight(abstract_txt:been in 2924) [ClassicSimilarity], result of:
           0.013970748 = score(doc=2924,freq=1.0), product of:
             0.06184411 = queryWeight, product of:
               1.1297292 = boost
               3.614442 = idf(docFreq=3251, maxDocs=44421)
               0.015145469 = queryNorm
             0.22590263 = fieldWeight in 2924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.614442 = idf(docFreq=3251, maxDocs=44421)
               0.0625 = fieldNorm(doc=2924)
         0.014727642 = weight(abstract_txt:some in 2924) [ClassicSimilarity], result of:
           0.014727642 = score(doc=2924,freq=1.0), product of:
             0.0640581 = queryWeight, product of:
               1.1497732 = boost
               3.6785707 = idf(docFreq=3049, maxDocs=44421)
               0.015145469 = queryNorm
             0.22991067 = fieldWeight in 2924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6785707 = idf(docFreq=3049, maxDocs=44421)
               0.0625 = fieldNorm(doc=2924)
         0.03516151 = weight(abstract_txt:retrieval in 2924) [ClassicSimilarity], result of:
           0.03516151 = score(doc=2924,freq=2.0), product of:
             0.11442746 = queryWeight, product of:
               2.173228 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.015145469 = queryNorm
             0.3072821 = fieldWeight in 2924, 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=2924)
         0.11016896 = weight(abstract_txt:techniques in 2924) [ClassicSimilarity], result of:
           0.11016896 = score(doc=2924,freq=4.0), product of:
             0.19446798 = queryWeight, product of:
               2.833115 = boost
               4.5321174 = idf(docFreq=1298, maxDocs=44421)
               0.015145469 = queryNorm
             0.5665147 = fieldWeight in 2924, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.5321174 = idf(docFreq=1298, maxDocs=44421)
               0.0625 = fieldNorm(doc=2924)
         0.063597225 = weight(abstract_txt:query in 2924) [ClassicSimilarity], result of:
           0.063597225 = score(doc=2924,freq=1.0), product of:
             0.21401983 = queryWeight, product of:
               2.9721258 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.015145469 = queryNorm
             0.29715574 = fieldWeight in 2924, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.0625 = fieldNorm(doc=2924)
         0.23774926 = weight(abstract_txt:relevance in 2924) [ClassicSimilarity], result of:
           0.23774926 = score(doc=2924,freq=5.0), product of:
             0.3451028 = queryWeight, product of:
               4.62232 = boost
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.015145469 = queryNorm
             0.68892306 = fieldWeight in 2924, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.929532 = idf(docFreq=872, maxDocs=44421)
               0.0625 = fieldNorm(doc=2924)
         0.41584688 = weight(abstract_txt:feedback in 2924) [ClassicSimilarity], result of:
           0.41584688 = score(doc=2924,freq=5.0), product of:
             0.5009849 = queryWeight, product of:
               5.5692677 = boost
               5.9394164 = idf(docFreq=317, maxDocs=44421)
               0.015145469 = queryNorm
             0.8300587 = fieldWeight in 2924, 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=2924)
       0.4 = coord(10/25)