Document (#39856)

Author

Ye, Z.
Huang, J.X.

Title

¬A learning to rank approach for quality-aware pseudo-relevance feedback

Source

Journal of the Association for Information Science and Technology. 67(2016) no.4, S.942-959

Year

2016

Abstract

Pseudo relevance feedback (PRF) has shown to be effective in ad hoc information retrieval. In traditional PRF methods, top-ranked documents are all assumed to be relevant and therefore treated equally in the feedback process. However, the performance gain brought by each document is different as showed in our preliminary experiments. Thus, it is more reasonable to predict the performance gain brought by each candidate feedback document in the process of PRF. We define the quality level (QL) and then use this information to adjust the weights of feedback terms in these documents. Unlike previous work, we do not make any explicit relevance assumption and we go beyond just selecting "good" documents for PRF. We propose a quality-based PRF framework, in which two quality-based assumptions are introduced. Particularly, two different strategies, relevance-based QL (RelPRF) and improvement-based QL (ImpPRF) are presented to estimate the QL of each feedback document. Based on this, we select a set of heterogeneous document-level features and apply a learning approach to evaluate the QL of each feedback document. Extensive experiments on standard TREC (Text REtrieval Conference) test collections show that our proposed model performs robustly and outperforms strong baselines significantly.

Content

Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23430/abstract.

Theme

Retrievalalgorithmen

Similar documents (author)

1. Huang, G.W.: Accessing information in an information society (1989) 4.50

   4.4981737 = sum of:
     4.4981737 = weight(author_txt:huang in 2497) [ClassicSimilarity], result of:
       4.4981737 = fieldWeight in 2497, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.1970778 = idf(docFreq=89, maxDocs=44218)
         0.625 = fieldNorm(doc=2497)
   

2. Huang, X.: Applying a generic function-based topical relevance typology to structure clinical questions and answers (2013) 4.50

   4.4981737 = sum of:
     4.4981737 = weight(author_txt:huang in 530) [ClassicSimilarity], result of:
       4.4981737 = fieldWeight in 530, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.1970778 = idf(docFreq=89, maxDocs=44218)
         0.625 = fieldNorm(doc=530)
   

3. Huang, J. Xiangji => Xiangji Huang, J.: 3.82

   3.8168268 = sum of:
     3.8168268 = weight(author_txt:huang in 8235) [ClassicSimilarity], result of:
       3.8168268 = fieldWeight in 8235, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         7.1970778 = idf(docFreq=89, maxDocs=44218)
         0.375 = fieldNorm(doc=8235)
   

4. Huang, M.-H.: Developing an ideal online thesaurus display format (1994) 3.60

   3.5985389 = sum of:
     3.5985389 = weight(author_txt:huang in 4030) [ClassicSimilarity], result of:
       3.5985389 = fieldWeight in 4030, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.1970778 = idf(docFreq=89, maxDocs=44218)
         0.5 = fieldNorm(doc=4030)
   

5. Huang, M.-h.: End-users' searching behaviour : changes in search type over time (1996) 3.60

   3.5985389 = sum of:
     3.5985389 = weight(author_txt:huang in 5128) [ClassicSimilarity], result of:
       3.5985389 = fieldWeight in 5128, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.1970778 = idf(docFreq=89, maxDocs=44218)
         0.5 = fieldNorm(doc=5128)
   

Similar documents (content)

1. Ye, Z.; Huang, J.X.; Lin, H.: Finding a good query-related topic for boosting pseudo-relevance feedback (2011) 0.51

   0.5115448 = sum of:
     0.5115448 = product of:
       1.1626018 = sum of:
         0.056011207 = weight(abstract_txt:estimate in 4372) [ClassicSimilarity], result of:
           0.056011207 = score(doc=4372,freq=1.0), product of:
             0.12451989 = queryWeight, product of:
               1.0015377 = boost
               7.1970778 = idf(docFreq=89, maxDocs=44218)
               0.017274888 = queryNorm
             0.44981736 = fieldWeight in 4372, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1970778 = idf(docFreq=89, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.059110288 = weight(abstract_txt:candidate in 4372) [ClassicSimilarity], result of:
           0.059110288 = score(doc=4372,freq=1.0), product of:
             0.12907164 = queryWeight, product of:
               1.0196787 = boost
               7.3274393 = idf(docFreq=78, maxDocs=44218)
               0.017274888 = queryNorm
             0.45796496 = fieldWeight in 4372, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.3274393 = idf(docFreq=78, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.020929154 = weight(abstract_txt:different in 4372) [ClassicSimilarity], result of:
           0.020929154 = score(doc=4372,freq=2.0), product of:
             0.06459862 = queryWeight, product of:
               1.0201747 = boost
               3.6655018 = idf(docFreq=3075, maxDocs=44218)
               0.017274888 = queryNorm
             0.32398763 = fieldWeight in 4372, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6655018 = idf(docFreq=3075, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.038672026 = weight(abstract_txt:level in 4372) [ClassicSimilarity], result of:
           0.038672026 = score(doc=4372,freq=2.0), product of:
             0.09727175 = queryWeight, product of:
               1.2518616 = boost
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.017274888 = queryNorm
             0.39756688 = fieldWeight in 4372, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.029833045 = weight(abstract_txt:performance in 4372) [ClassicSimilarity], result of:
           0.029833045 = score(doc=4372,freq=1.0), product of:
             0.1030854 = queryWeight, product of:
               1.2887287 = boost
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.017274888 = queryNorm
             0.28940126 = fieldWeight in 4372, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.0546502 = weight(abstract_txt:documents in 4372) [ClassicSimilarity], result of:
           0.0546502 = score(doc=4372,freq=3.0), product of:
             0.12249451 = queryWeight, product of:
               1.7205484 = boost
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.017274888 = queryNorm
             0.44614407 = fieldWeight in 4372, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.05442354 = weight(abstract_txt:based in 4372) [ClassicSimilarity], result of:
           0.05442354 = score(doc=4372,freq=5.0), product of:
             0.12215558 = queryWeight, product of:
               2.2181432 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.017274888 = queryNorm
             0.44552645 = fieldWeight in 4372, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.21622263 = weight(abstract_txt:pseudo in 4372) [ClassicSimilarity], result of:
           0.21622263 = score(doc=4372,freq=2.0), product of:
             0.30642405 = queryWeight, product of:
               2.2218993 = boost
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.017274888 = queryNorm
             0.70563203 = fieldWeight in 4372, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.07209339 = weight(abstract_txt:relevance in 4372) [ClassicSimilarity], result of:
           0.07209339 = score(doc=4372,freq=1.0), product of:
             0.23388681 = queryWeight, product of:
               2.745243 = boost
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.017274888 = queryNorm
             0.3082405 = fieldWeight in 4372, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.11884206 = weight(abstract_txt:document in 4372) [ClassicSimilarity], result of:
           0.11884206 = score(doc=4372,freq=4.0), product of:
             0.22148223 = queryWeight, product of:
               2.9867742 = boost
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.017274888 = queryNorm
             0.53657603 = fieldWeight in 4372, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
         0.4418143 = weight(abstract_txt:feedback in 4372) [ClassicSimilarity], result of:
           0.4418143 = score(doc=4372,freq=4.0), product of:
             0.5946042 = queryWeight, product of:
               5.790432 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.017274888 = queryNorm
             0.7430393 = fieldWeight in 4372, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0625 = fieldNorm(doc=4372)
       0.44 = coord(11/25)
   

2. Dang, E.K.F.; Luk, R.W.P.; Allan, J.: ¬A context-dependent relevance model (2016) 0.42

   0.41719228 = sum of:
     0.41719228 = product of:
       1.0429807 = sum of:
         0.056011207 = weight(abstract_txt:estimate in 2778) [ClassicSimilarity], result of:
           0.056011207 = score(doc=2778,freq=1.0), product of:
             0.12451989 = queryWeight, product of:
               1.0015377 = boost
               7.1970778 = idf(docFreq=89, maxDocs=44218)
               0.017274888 = queryNorm
             0.44981736 = fieldWeight in 2778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1970778 = idf(docFreq=89, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.015787229 = weight(abstract_txt:approach in 2778) [ClassicSimilarity], result of:
           0.015787229 = score(doc=2778,freq=1.0), product of:
             0.06744287 = queryWeight, product of:
               1.0423918 = boost
               3.745328 = idf(docFreq=2839, maxDocs=44218)
               0.017274888 = queryNorm
             0.234083 = fieldWeight in 2778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.745328 = idf(docFreq=2839, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.029833045 = weight(abstract_txt:performance in 2778) [ClassicSimilarity], result of:
           0.029833045 = score(doc=2778,freq=1.0), product of:
             0.1030854 = queryWeight, product of:
               1.2887287 = boost
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.017274888 = queryNorm
             0.28940126 = fieldWeight in 2778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.04551137 = weight(abstract_txt:experiments in 2778) [ClassicSimilarity], result of:
           0.04551137 = score(doc=2778,freq=1.0), product of:
             0.13660881 = queryWeight, product of:
               1.4835503 = boost
               5.3304167 = idf(docFreq=581, maxDocs=44218)
               0.017274888 = queryNorm
             0.33315104 = fieldWeight in 2778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3304167 = idf(docFreq=581, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.03155231 = weight(abstract_txt:documents in 2778) [ClassicSimilarity], result of:
           0.03155231 = score(doc=2778,freq=1.0), product of:
             0.12249451 = queryWeight, product of:
               1.7205484 = boost
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.017274888 = queryNorm
             0.2575814 = fieldWeight in 2778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.024338948 = weight(abstract_txt:based in 2778) [ClassicSimilarity], result of:
           0.024338948 = score(doc=2778,freq=1.0), product of:
             0.12215558 = queryWeight, product of:
               2.2181432 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.017274888 = queryNorm
             0.19924548 = fieldWeight in 2778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.15289249 = weight(abstract_txt:pseudo in 2778) [ClassicSimilarity], result of:
           0.15289249 = score(doc=2778,freq=1.0), product of:
             0.30642405 = queryWeight, product of:
               2.2218993 = boost
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.017274888 = queryNorm
             0.4989572 = fieldWeight in 2778, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.16120571 = weight(abstract_txt:relevance in 2778) [ClassicSimilarity], result of:
           0.16120571 = score(doc=2778,freq=5.0), product of:
             0.23388681 = queryWeight, product of:
               2.745243 = boost
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.017274888 = queryNorm
             0.6892467 = fieldWeight in 2778, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.084034026 = weight(abstract_txt:document in 2778) [ClassicSimilarity], result of:
           0.084034026 = score(doc=2778,freq=2.0), product of:
             0.22148223 = queryWeight, product of:
               2.9867742 = boost
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.017274888 = queryNorm
             0.37941656 = fieldWeight in 2778, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
         0.4418143 = weight(abstract_txt:feedback in 2778) [ClassicSimilarity], result of:
           0.4418143 = score(doc=2778,freq=4.0), product of:
             0.5946042 = queryWeight, product of:
               5.790432 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.017274888 = queryNorm
             0.7430393 = fieldWeight in 2778, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0625 = fieldNorm(doc=2778)
       0.4 = coord(10/25)
   

3. Li, X.: ¬A new robust relevance model in the language model framework (2008) 0.38

   0.37671408 = sum of:
     0.37671408 = product of:
       1.1772316 = sum of:
         0.014799148 = weight(abstract_txt:different in 2076) [ClassicSimilarity], result of:
           0.014799148 = score(doc=2076,freq=1.0), product of:
             0.06459862 = queryWeight, product of:
               1.0201747 = boost
               3.6655018 = idf(docFreq=3075, maxDocs=44218)
               0.017274888 = queryNorm
             0.22909386 = fieldWeight in 2076, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6655018 = idf(docFreq=3075, maxDocs=44218)
               0.0625 = fieldNorm(doc=2076)
         0.11849585 = weight(abstract_txt:baselines in 2076) [ClassicSimilarity], result of:
           0.11849585 = score(doc=2076,freq=2.0), product of:
             0.16287242 = queryWeight, product of:
               1.1454383 = boost
               8.231152 = idf(docFreq=31, maxDocs=44218)
               0.017274888 = queryNorm
             0.7275379 = fieldWeight in 2076, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.231152 = idf(docFreq=31, maxDocs=44218)
               0.0625 = fieldNorm(doc=2076)
         0.029833045 = weight(abstract_txt:performance in 2076) [ClassicSimilarity], result of:
           0.029833045 = score(doc=2076,freq=1.0), product of:
             0.1030854 = queryWeight, product of:
               1.2887287 = boost
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.017274888 = queryNorm
             0.28940126 = fieldWeight in 2076, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.0625 = fieldNorm(doc=2076)
         0.0546502 = weight(abstract_txt:documents in 2076) [ClassicSimilarity], result of:
           0.0546502 = score(doc=2076,freq=3.0), product of:
             0.12249451 = queryWeight, product of:
               1.7205484 = boost
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.017274888 = queryNorm
             0.44614407 = fieldWeight in 2076, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.0625 = fieldNorm(doc=2076)
         0.26481754 = weight(abstract_txt:pseudo in 2076) [ClassicSimilarity], result of:
           0.26481754 = score(doc=2076,freq=3.0), product of:
             0.30642405 = queryWeight, product of:
               2.2218993 = boost
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.017274888 = queryNorm
             0.8642192 = fieldWeight in 2076, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.0625 = fieldNorm(doc=2076)
         0.2279793 = weight(abstract_txt:relevance in 2076) [ClassicSimilarity], result of:
           0.2279793 = score(doc=2076,freq=10.0), product of:
             0.23388681 = queryWeight, product of:
               2.745243 = boost
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.017274888 = queryNorm
             0.97474205 = fieldWeight in 2076, product of:
               3.1622777 = tf(freq=10.0), with freq of:
                 10.0 = termFreq=10.0
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.0625 = fieldNorm(doc=2076)
         0.084034026 = weight(abstract_txt:document in 2076) [ClassicSimilarity], result of:
           0.084034026 = score(doc=2076,freq=2.0), product of:
             0.22148223 = queryWeight, product of:
               2.9867742 = boost
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.017274888 = queryNorm
             0.37941656 = fieldWeight in 2076, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.0625 = fieldNorm(doc=2076)
         0.3826224 = weight(abstract_txt:feedback in 2076) [ClassicSimilarity], result of:
           0.3826224 = score(doc=2076,freq=3.0), product of:
             0.5946042 = queryWeight, product of:
               5.790432 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.017274888 = queryNorm
             0.6434909 = fieldWeight in 2076, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0625 = fieldNorm(doc=2076)
       0.32 = coord(8/25)
   

4. Pan, M.; Huang, J.X.; He, T.; Mao, Z.; Ying, Z.; Tu, X.: ¬A simple kernel co-occurrence-based enhancement for pseudo-relevance feedback (2020) 0.34

   0.3410221 = sum of:
     0.3410221 = product of:
       0.8525553 = sum of:
         0.059110288 = weight(abstract_txt:candidate in 5678) [ClassicSimilarity], result of:
           0.059110288 = score(doc=5678,freq=1.0), product of:
             0.12907164 = queryWeight, product of:
               1.0196787 = boost
               7.3274393 = idf(docFreq=78, maxDocs=44218)
               0.017274888 = queryNorm
             0.45796496 = fieldWeight in 5678, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.3274393 = idf(docFreq=78, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.08378922 = weight(abstract_txt:baselines in 5678) [ClassicSimilarity], result of:
           0.08378922 = score(doc=5678,freq=1.0), product of:
             0.16287242 = queryWeight, product of:
               1.1454383 = boost
               8.231152 = idf(docFreq=31, maxDocs=44218)
               0.017274888 = queryNorm
             0.514447 = fieldWeight in 5678, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.231152 = idf(docFreq=31, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.042190295 = weight(abstract_txt:performance in 5678) [ClassicSimilarity], result of:
           0.042190295 = score(doc=5678,freq=2.0), product of:
             0.1030854 = queryWeight, product of:
               1.2887287 = boost
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.017274888 = queryNorm
             0.40927517 = fieldWeight in 5678, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.04551137 = weight(abstract_txt:experiments in 5678) [ClassicSimilarity], result of:
           0.04551137 = score(doc=5678,freq=1.0), product of:
             0.13660881 = queryWeight, product of:
               1.4835503 = boost
               5.3304167 = idf(docFreq=581, maxDocs=44218)
               0.017274888 = queryNorm
             0.33315104 = fieldWeight in 5678, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3304167 = idf(docFreq=581, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.044621702 = weight(abstract_txt:documents in 5678) [ClassicSimilarity], result of:
           0.044621702 = score(doc=5678,freq=2.0), product of:
             0.12249451 = queryWeight, product of:
               1.7205484 = boost
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.017274888 = queryNorm
             0.36427513 = fieldWeight in 5678, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.04215629 = weight(abstract_txt:based in 5678) [ClassicSimilarity], result of:
           0.04215629 = score(doc=5678,freq=3.0), product of:
             0.12215558 = queryWeight, product of:
               2.2181432 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.017274888 = queryNorm
             0.3451033 = fieldWeight in 5678, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.15289249 = weight(abstract_txt:pseudo in 5678) [ClassicSimilarity], result of:
           0.15289249 = score(doc=5678,freq=1.0), product of:
             0.30642405 = queryWeight, product of:
               2.2218993 = boost
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.017274888 = queryNorm
             0.4989572 = fieldWeight in 5678, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.10195544 = weight(abstract_txt:relevance in 5678) [ClassicSimilarity], result of:
           0.10195544 = score(doc=5678,freq=2.0), product of:
             0.23388681 = queryWeight, product of:
               2.745243 = boost
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.017274888 = queryNorm
             0.43591788 = fieldWeight in 5678, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.05942103 = weight(abstract_txt:document in 5678) [ClassicSimilarity], result of:
           0.05942103 = score(doc=5678,freq=1.0), product of:
             0.22148223 = queryWeight, product of:
               2.9867742 = boost
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.017274888 = queryNorm
             0.26828802 = fieldWeight in 5678, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
         0.22090715 = weight(abstract_txt:feedback in 5678) [ClassicSimilarity], result of:
           0.22090715 = score(doc=5678,freq=1.0), product of:
             0.5946042 = queryWeight, product of:
               5.790432 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.017274888 = queryNorm
             0.37151965 = fieldWeight in 5678, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0625 = fieldNorm(doc=5678)
       0.4 = coord(10/25)
   

5. Liu, X.; Zheng, W.; Fang, H.: ¬An exploration of ranking models and feedback method for related entity finding (2013) 0.34

   0.3361651 = sum of:
     0.3361651 = product of:
       0.9337919 = sum of:
         0.05575361 = weight(abstract_txt:performs in 2714) [ClassicSimilarity], result of:
           0.05575361 = score(doc=2714,freq=1.0), product of:
             0.12413782 = queryWeight, product of:
               7.1860275 = idf(docFreq=90, maxDocs=44218)
               0.017274888 = queryNorm
             0.44912672 = fieldWeight in 2714, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1860275 = idf(docFreq=90, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
         0.056011207 = weight(abstract_txt:estimate in 2714) [ClassicSimilarity], result of:
           0.056011207 = score(doc=2714,freq=1.0), product of:
             0.12451989 = queryWeight, product of:
               1.0015377 = boost
               7.1970778 = idf(docFreq=89, maxDocs=44218)
               0.017274888 = queryNorm
             0.44981736 = fieldWeight in 2714, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1970778 = idf(docFreq=89, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
         0.029833045 = weight(abstract_txt:performance in 2714) [ClassicSimilarity], result of:
           0.029833045 = score(doc=2714,freq=1.0), product of:
             0.1030854 = queryWeight, product of:
               1.2887287 = boost
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.017274888 = queryNorm
             0.28940126 = fieldWeight in 2714, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
         0.03155231 = weight(abstract_txt:documents in 2714) [ClassicSimilarity], result of:
           0.03155231 = score(doc=2714,freq=1.0), product of:
             0.12249451 = queryWeight, product of:
               1.7205484 = boost
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.017274888 = queryNorm
             0.2575814 = fieldWeight in 2714, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1213026 = idf(docFreq=1949, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
         0.034420468 = weight(abstract_txt:based in 2714) [ClassicSimilarity], result of:
           0.034420468 = score(doc=2714,freq=2.0), product of:
             0.12215558 = queryWeight, product of:
               2.2181432 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.017274888 = queryNorm
             0.28177565 = fieldWeight in 2714, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
         0.15289249 = weight(abstract_txt:pseudo in 2714) [ClassicSimilarity], result of:
           0.15289249 = score(doc=2714,freq=1.0), product of:
             0.30642405 = queryWeight, product of:
               2.2218993 = boost
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.017274888 = queryNorm
             0.4989572 = fieldWeight in 2714, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.983315 = idf(docFreq=40, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
         0.07209339 = weight(abstract_txt:relevance in 2714) [ClassicSimilarity], result of:
           0.07209339 = score(doc=2714,freq=1.0), product of:
             0.23388681 = queryWeight, product of:
               2.745243 = boost
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.017274888 = queryNorm
             0.3082405 = fieldWeight in 2714, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.931848 = idf(docFreq=866, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
         0.05942103 = weight(abstract_txt:document in 2714) [ClassicSimilarity], result of:
           0.05942103 = score(doc=2714,freq=1.0), product of:
             0.22148223 = queryWeight, product of:
               2.9867742 = boost
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.017274888 = queryNorm
             0.26828802 = fieldWeight in 2714, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.2926083 = idf(docFreq=1642, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
         0.4418143 = weight(abstract_txt:feedback in 2714) [ClassicSimilarity], result of:
           0.4418143 = score(doc=2714,freq=4.0), product of:
             0.5946042 = queryWeight, product of:
               5.790432 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.017274888 = queryNorm
             0.7430393 = fieldWeight in 2714, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.0625 = fieldNorm(doc=2714)
       0.36 = coord(9/25)