Document (#42248)

Author
Jiang, J.-D.
Jiang, J.-Y.
Cheng, P.-J.
Title
Cocluster hypothesis and ranking consistency for relevance ranking in web search
Source
Journal of the Association for Information Science and Technology. 70(2019) no.6, S.535-546
Year
2019
Abstract
Conventional approaches to relevance ranking typically optimize ranking models by each query separately. The traditional cluster hypothesis also does not consider the dependency between related queries. The goal of this paper is to leverage similar search intents to perform ranking consistency so that the search performance can be improved accordingly. Different from the previous supervised approach, which learns relevance by click-through data, we propose a novel cocluster hypothesis to bridge the gap between relevance ranking and ranking consistency. A nearest-neighbors test is also designed to measure the extent to which the cocluster hypothesis holds. Based on the hypothesis, we further propose a two-stage unsupervised approach, in which two ranking heuristics and a cost function are developed to optimize the combination of consistency and uniqueness (or inconsistency). Extensive experiments have been conducted on a real and large-scale search engine log. The experimental results not only verify the applicability of the proposed cocluster hypothesis but also show that our approach is effective in boosting the retrieval performance of the commercial search engine and reaches a comparable performance to the supervised approach.
Content
Vgl.: https://onlinelibrary.wiley.com/doi/10.1002/asi.24071.
Theme
Retrievalalgorithmen

Similar documents (author)

  1. Jiang, D.: ¬A feasibility study of the outsourcing of cataloging in the academic libraries (1998) 2.37
    2.3703587 = sum of:
      2.3703587 = product of:
        4.7407174 = sum of:
          4.7407174 = weight(author_txt:jiang in 5623) [ClassicSimilarity], result of:
            4.7407174 = score(doc=5623,freq=1.0), product of:
              0.89056927 = queryWeight, product of:
                1.9788638 = boost
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.052839108 = queryNorm
              5.3232436 = fieldWeight in 5623, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.625 = fieldNorm(doc=5623)
        0.5 = coord(1/2)
    
  2. Jiang, S.Y.: Lost in translation : the treatment of Chinese classics in the Library of Congress Classification (2007) 2.37
    2.3703587 = sum of:
      2.3703587 = product of:
        4.7407174 = sum of:
          4.7407174 = weight(author_txt:jiang in 2774) [ClassicSimilarity], result of:
            4.7407174 = score(doc=2774,freq=1.0), product of:
              0.89056927 = queryWeight, product of:
                1.9788638 = boost
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.052839108 = queryNorm
              5.3232436 = fieldWeight in 2774, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.625 = fieldNorm(doc=2774)
        0.5 = coord(1/2)
    
  3. Jiang, T.: Architektur und Anwendungen des kollaborativen Lernsystems K3 (2008) 2.37
    2.3703587 = sum of:
      2.3703587 = product of:
        4.7407174 = sum of:
          4.7407174 = weight(author_txt:jiang in 3392) [ClassicSimilarity], result of:
            4.7407174 = score(doc=3392,freq=1.0), product of:
              0.89056927 = queryWeight, product of:
                1.9788638 = boost
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.052839108 = queryNorm
              5.3232436 = fieldWeight in 3392, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.625 = fieldNorm(doc=3392)
        0.5 = coord(1/2)
    
  4. Jiang, L.; Wagner, C.: Perceptions of justice or injustice as determinants of contributor defections from online communities (2015) 1.90
    1.896287 = sum of:
      1.896287 = product of:
        3.792574 = sum of:
          3.792574 = weight(author_txt:jiang in 4046) [ClassicSimilarity], result of:
            3.792574 = score(doc=4046,freq=1.0), product of:
              0.89056927 = queryWeight, product of:
                1.9788638 = boost
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.052839108 = queryNorm
              4.258595 = fieldWeight in 4046, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.5 = fieldNorm(doc=4046)
        0.5 = coord(1/2)
    
  5. Jiang, X.; Tan, A.-H.: CRCTOL: a semantic-based domain ontology learning system (2009) 1.66
    1.6592511 = sum of:
      1.6592511 = product of:
        3.3185022 = sum of:
          3.3185022 = weight(author_txt:jiang in 321) [ClassicSimilarity], result of:
            3.3185022 = score(doc=321,freq=1.0), product of:
              0.89056927 = queryWeight, product of:
                1.9788638 = boost
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.052839108 = queryNorm
              3.7262707 = fieldWeight in 321, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.51719 = idf(docFreq=22, maxDocs=42306)
                0.4375 = fieldNorm(doc=321)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Daoud, M.; Huang, J.X.: Modeling geographic, temporal, and proximity contexts for improving geotemporal search (2013) 0.22
    0.2233068 = sum of:
      0.2233068 = product of:
        0.6978338 = sum of:
          0.088851444 = weight(abstract_txt:intents in 2534) [ClassicSimilarity], result of:
            0.088851444 = score(doc=2534,freq=1.0), product of:
              0.16971388 = queryWeight, product of:
                1.2367474 = boost
                9.573242 = idf(docFreq=7, maxDocs=42306)
                0.014334328 = queryNorm
              0.5235367 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.573242 = idf(docFreq=7, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2534)
          0.012362957 = weight(abstract_txt:also in 2534) [ClassicSimilarity], result of:
            0.012362957 = score(doc=2534,freq=1.0), product of:
              0.065724865 = queryWeight, product of:
                1.3330542 = boost
                3.4395735 = idf(docFreq=3688, maxDocs=42306)
                0.014334328 = queryNorm
              0.18810168 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4395735 = idf(docFreq=3688, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2534)
          0.029489307 = weight(abstract_txt:propose in 2534) [ClassicSimilarity], result of:
            0.029489307 = score(doc=2534,freq=1.0), product of:
              0.10250083 = queryWeight, product of:
                1.3592552 = boost
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.014334328 = queryNorm
              0.2876982 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2534)
          0.043163933 = weight(abstract_txt:performance in 2534) [ClassicSimilarity], result of:
            0.043163933 = score(doc=2534,freq=2.0), product of:
              0.12005644 = queryWeight, product of:
                1.8016717 = boost
                4.6487103 = idf(docFreq=1100, maxDocs=42306)
                0.014334328 = queryNorm
              0.35953033 = fieldWeight in 2534, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.6487103 = idf(docFreq=1100, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2534)
          0.038167447 = weight(abstract_txt:approach in 2534) [ClassicSimilarity], result of:
            0.038167447 = score(doc=2534,freq=3.0), product of:
              0.106344745 = queryWeight, product of:
                1.9579893 = boost
                3.789033 = idf(docFreq=2600, maxDocs=42306)
                0.014334328 = queryNorm
              0.358903 = fieldWeight in 2534, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.789033 = idf(docFreq=2600, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2534)
          0.049476255 = weight(abstract_txt:search in 2534) [ClassicSimilarity], result of:
            0.049476255 = score(doc=2534,freq=4.0), product of:
              0.12373966 = queryWeight, product of:
                2.3613577 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.014334328 = queryNorm
              0.39984152 = fieldWeight in 2534, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2534)
          0.18980905 = weight(abstract_txt:hypothesis in 2534) [ClassicSimilarity], result of:
            0.18980905 = score(doc=2534,freq=1.0), product of:
              0.511528 = queryWeight, product of:
                5.259357 = boost
                6.7851496 = idf(docFreq=129, maxDocs=42306)
                0.014334328 = queryNorm
              0.37106287 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7851496 = idf(docFreq=129, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2534)
          0.24651337 = weight(abstract_txt:ranking in 2534) [ClassicSimilarity], result of:
            0.24651337 = score(doc=2534,freq=3.0), product of:
              0.4646839 = queryWeight, product of:
                5.788234 = boost
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.014334328 = queryNorm
              0.5304969 = fieldWeight in 2534, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.0546875 = fieldNorm(doc=2534)
        0.32 = coord(8/25)
    
  2. Cui, C.; Ma, J.; Lian, T.; Chen, Z.; Wang, S.: Improving image annotation via ranking-oriented neighbor search and learning-based keyword propagation (2015) 0.22
    0.21565269 = sum of:
      0.21565269 = product of:
        0.6739147 = sum of:
          0.12559408 = weight(abstract_txt:nearest in 3610) [ClassicSimilarity], result of:
            0.12559408 = score(doc=3610,freq=4.0), product of:
              0.123189166 = queryWeight, product of:
                1.0536796 = boost
                8.156177 = idf(docFreq=32, maxDocs=42306)
                0.014334328 = queryNorm
              1.0195221 = fieldWeight in 3610, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                8.156177 = idf(docFreq=32, maxDocs=42306)
                0.0625 = fieldNorm(doc=3610)
          0.008813974 = weight(abstract_txt:which in 3610) [ClassicSimilarity], result of:
            0.008813974 = score(doc=3610,freq=1.0), product of:
              0.04798454 = queryWeight, product of:
                1.1390259 = boost
                2.938938 = idf(docFreq=6085, maxDocs=42306)
                0.014334328 = queryNorm
              0.18368362 = fieldWeight in 3610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.938938 = idf(docFreq=6085, maxDocs=42306)
                0.0625 = fieldNorm(doc=3610)
          0.21170643 = weight(abstract_txt:neighbors in 3610) [ClassicSimilarity], result of:
            0.21170643 = score(doc=3610,freq=4.0), product of:
              0.17448139 = queryWeight, product of:
                1.253998 = boost
                9.706774 = idf(docFreq=6, maxDocs=42306)
                0.014334328 = queryNorm
              1.2133467 = fieldWeight in 3610, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                9.706774 = idf(docFreq=6, maxDocs=42306)
                0.0625 = fieldNorm(doc=3610)
          0.033702064 = weight(abstract_txt:propose in 3610) [ClassicSimilarity], result of:
            0.033702064 = score(doc=3610,freq=1.0), product of:
              0.10250083 = queryWeight, product of:
                1.3592552 = boost
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.014334328 = queryNorm
              0.32879794 = fieldWeight in 3610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.0625 = fieldNorm(doc=3610)
          0.035615534 = weight(abstract_txt:approach in 3610) [ClassicSimilarity], result of:
            0.035615534 = score(doc=3610,freq=2.0), product of:
              0.106344745 = queryWeight, product of:
                1.9579893 = boost
                3.789033 = idf(docFreq=2600, maxDocs=42306)
                0.014334328 = queryNorm
              0.33490637 = fieldWeight in 3610, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.789033 = idf(docFreq=2600, maxDocs=42306)
                0.0625 = fieldNorm(doc=3610)
          0.039982848 = weight(abstract_txt:search in 3610) [ClassicSimilarity], result of:
            0.039982848 = score(doc=3610,freq=2.0), product of:
              0.12373966 = queryWeight, product of:
                2.3613577 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.014334328 = queryNorm
              0.3231207 = fieldWeight in 3610, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0625 = fieldNorm(doc=3610)
          0.055843033 = weight(abstract_txt:relevance in 3610) [ClassicSimilarity], result of:
            0.055843033 = score(doc=3610,freq=1.0), product of:
              0.18083358 = queryWeight, product of:
                2.5532413 = boost
                4.9409437 = idf(docFreq=821, maxDocs=42306)
                0.014334328 = queryNorm
              0.30880898 = fieldWeight in 3610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9409437 = idf(docFreq=821, maxDocs=42306)
                0.0625 = fieldNorm(doc=3610)
          0.16265664 = weight(abstract_txt:ranking in 3610) [ClassicSimilarity], result of:
            0.16265664 = score(doc=3610,freq=1.0), product of:
              0.4646839 = queryWeight, product of:
                5.788234 = boost
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.014334328 = queryNorm
              0.3500372 = fieldWeight in 3610, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.0625 = fieldNorm(doc=3610)
        0.32 = coord(8/25)
    
  3. Qin, T.; Zhang, X.-D.; Tsai, M.-F.; Wang, D.-S.; Liu, T.-Y.; Li, H.: Query-level loss functions for information retrieval (2008) 0.19
    0.1901061 = sum of:
      0.1901061 = product of:
        0.6789503 = sum of:
          0.008813974 = weight(abstract_txt:which in 4067) [ClassicSimilarity], result of:
            0.008813974 = score(doc=4067,freq=1.0), product of:
              0.04798454 = queryWeight, product of:
                1.1390259 = boost
                2.938938 = idf(docFreq=6085, maxDocs=42306)
                0.014334328 = queryNorm
              0.18368362 = fieldWeight in 4067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.938938 = idf(docFreq=6085, maxDocs=42306)
                0.0625 = fieldNorm(doc=4067)
          0.08104611 = weight(abstract_txt:boosting in 4067) [ClassicSimilarity], result of:
            0.08104611 = score(doc=4067,freq=1.0), product of:
              0.14602746 = queryWeight, product of:
                1.1472012 = boost
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.014334328 = queryNorm
              0.55500597 = fieldWeight in 4067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.8800955 = idf(docFreq=15, maxDocs=42306)
                0.0625 = fieldNorm(doc=4067)
          0.014129094 = weight(abstract_txt:also in 4067) [ClassicSimilarity], result of:
            0.014129094 = score(doc=4067,freq=1.0), product of:
              0.065724865 = queryWeight, product of:
                1.3330542 = boost
                3.4395735 = idf(docFreq=3688, maxDocs=42306)
                0.014334328 = queryNorm
              0.21497335 = fieldWeight in 4067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4395735 = idf(docFreq=3688, maxDocs=42306)
                0.0625 = fieldNorm(doc=4067)
          0.04766191 = weight(abstract_txt:propose in 4067) [ClassicSimilarity], result of:
            0.04766191 = score(doc=4067,freq=2.0), product of:
              0.10250083 = queryWeight, product of:
                1.3592552 = boost
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.014334328 = queryNorm
              0.4649905 = fieldWeight in 4067, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.0625 = fieldNorm(doc=4067)
          0.03896463 = weight(abstract_txt:engine in 4067) [ClassicSimilarity], result of:
            0.03896463 = score(doc=4067,freq=1.0), product of:
              0.112911135 = queryWeight, product of:
                1.4266114 = boost
                5.5214577 = idf(docFreq=459, maxDocs=42306)
                0.014334328 = queryNorm
              0.3450911 = fieldWeight in 4067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5214577 = idf(docFreq=459, maxDocs=42306)
                0.0625 = fieldNorm(doc=4067)
          0.028272144 = weight(abstract_txt:search in 4067) [ClassicSimilarity], result of:
            0.028272144 = score(doc=4067,freq=1.0), product of:
              0.12373966 = queryWeight, product of:
                2.3613577 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.014334328 = queryNorm
              0.22848086 = fieldWeight in 4067, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0625 = fieldNorm(doc=4067)
          0.46006244 = weight(abstract_txt:ranking in 4067) [ClassicSimilarity], result of:
            0.46006244 = score(doc=4067,freq=8.0), product of:
              0.4646839 = queryWeight, product of:
                5.788234 = boost
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.014334328 = queryNorm
              0.99005467 = fieldWeight in 4067, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.0625 = fieldNorm(doc=4067)
        0.28 = coord(7/25)
    
  4. Costa Carvalho, A. da; Rossi, C.; Moura, E.S. de; Silva, A.S. da; Fernandes, D.: LePrEF: Learn to precompute evidence fusion for efficient query evaluation (2012) 0.19
    0.18556874 = sum of:
      0.18556874 = product of:
        0.5799023 = sum of:
          0.008813974 = weight(abstract_txt:which in 2279) [ClassicSimilarity], result of:
            0.008813974 = score(doc=2279,freq=1.0), product of:
              0.04798454 = queryWeight, product of:
                1.1390259 = boost
                2.938938 = idf(docFreq=6085, maxDocs=42306)
                0.014334328 = queryNorm
              0.18368362 = fieldWeight in 2279, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.938938 = idf(docFreq=6085, maxDocs=42306)
                0.0625 = fieldNorm(doc=2279)
          0.019981558 = weight(abstract_txt:also in 2279) [ClassicSimilarity], result of:
            0.019981558 = score(doc=2279,freq=2.0), product of:
              0.065724865 = queryWeight, product of:
                1.3330542 = boost
                3.4395735 = idf(docFreq=3688, maxDocs=42306)
                0.014334328 = queryNorm
              0.30401823 = fieldWeight in 2279, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4395735 = idf(docFreq=3688, maxDocs=42306)
                0.0625 = fieldNorm(doc=2279)
          0.033702064 = weight(abstract_txt:propose in 2279) [ClassicSimilarity], result of:
            0.033702064 = score(doc=2279,freq=1.0), product of:
              0.10250083 = queryWeight, product of:
                1.3592552 = boost
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.014334328 = queryNorm
              0.32879794 = fieldWeight in 2279, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.0625 = fieldNorm(doc=2279)
          0.03896463 = weight(abstract_txt:engine in 2279) [ClassicSimilarity], result of:
            0.03896463 = score(doc=2279,freq=1.0), product of:
              0.112911135 = queryWeight, product of:
                1.4266114 = boost
                5.5214577 = idf(docFreq=459, maxDocs=42306)
                0.014334328 = queryNorm
              0.3450911 = fieldWeight in 2279, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5214577 = idf(docFreq=459, maxDocs=42306)
                0.0625 = fieldNorm(doc=2279)
          0.025183983 = weight(abstract_txt:approach in 2279) [ClassicSimilarity], result of:
            0.025183983 = score(doc=2279,freq=1.0), product of:
              0.106344745 = queryWeight, product of:
                1.9579893 = boost
                3.789033 = idf(docFreq=2600, maxDocs=42306)
                0.014334328 = queryNorm
              0.23681456 = fieldWeight in 2279, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.789033 = idf(docFreq=2600, maxDocs=42306)
                0.0625 = fieldNorm(doc=2279)
          0.04896879 = weight(abstract_txt:search in 2279) [ClassicSimilarity], result of:
            0.04896879 = score(doc=2279,freq=3.0), product of:
              0.12373966 = queryWeight, product of:
                2.3613577 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.014334328 = queryNorm
              0.39574045 = fieldWeight in 2279, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0625 = fieldNorm(doc=2279)
          0.07897397 = weight(abstract_txt:relevance in 2279) [ClassicSimilarity], result of:
            0.07897397 = score(doc=2279,freq=2.0), product of:
              0.18083358 = queryWeight, product of:
                2.5532413 = boost
                4.9409437 = idf(docFreq=821, maxDocs=42306)
                0.014334328 = queryNorm
              0.43672183 = fieldWeight in 2279, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9409437 = idf(docFreq=821, maxDocs=42306)
                0.0625 = fieldNorm(doc=2279)
          0.32531327 = weight(abstract_txt:ranking in 2279) [ClassicSimilarity], result of:
            0.32531327 = score(doc=2279,freq=4.0), product of:
              0.4646839 = queryWeight, product of:
                5.788234 = boost
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.014334328 = queryNorm
              0.7000744 = fieldWeight in 2279, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.0625 = fieldNorm(doc=2279)
        0.32 = coord(8/25)
    
  5. Hsu, M.-H.; Chen, H.-H.: Efficient and effective prediction of social tags to enhance Web search (2011) 0.17
    0.1675818 = sum of:
      0.1675818 = product of:
        0.5985064 = sum of:
          0.008813974 = weight(abstract_txt:which in 1626) [ClassicSimilarity], result of:
            0.008813974 = score(doc=1626,freq=1.0), product of:
              0.04798454 = queryWeight, product of:
                1.1390259 = boost
                2.938938 = idf(docFreq=6085, maxDocs=42306)
                0.014334328 = queryNorm
              0.18368362 = fieldWeight in 1626, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.938938 = idf(docFreq=6085, maxDocs=42306)
                0.0625 = fieldNorm(doc=1626)
          0.033702064 = weight(abstract_txt:propose in 1626) [ClassicSimilarity], result of:
            0.033702064 = score(doc=1626,freq=1.0), product of:
              0.10250083 = queryWeight, product of:
                1.3592552 = boost
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.014334328 = queryNorm
              0.32879794 = fieldWeight in 1626, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.260767 = idf(docFreq=596, maxDocs=42306)
                0.0625 = fieldNorm(doc=1626)
          0.034881726 = weight(abstract_txt:performance in 1626) [ClassicSimilarity], result of:
            0.034881726 = score(doc=1626,freq=1.0), product of:
              0.12005644 = queryWeight, product of:
                1.8016717 = boost
                4.6487103 = idf(docFreq=1100, maxDocs=42306)
                0.014334328 = queryNorm
              0.2905444 = fieldWeight in 1626, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6487103 = idf(docFreq=1100, maxDocs=42306)
                0.0625 = fieldNorm(doc=1626)
          0.025183983 = weight(abstract_txt:approach in 1626) [ClassicSimilarity], result of:
            0.025183983 = score(doc=1626,freq=1.0), product of:
              0.106344745 = queryWeight, product of:
                1.9579893 = boost
                3.789033 = idf(docFreq=2600, maxDocs=42306)
                0.014334328 = queryNorm
              0.23681456 = fieldWeight in 1626, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.789033 = idf(docFreq=2600, maxDocs=42306)
                0.0625 = fieldNorm(doc=1626)
          0.04896879 = weight(abstract_txt:search in 1626) [ClassicSimilarity], result of:
            0.04896879 = score(doc=1626,freq=3.0), product of:
              0.12373966 = queryWeight, product of:
                2.3613577 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.014334328 = queryNorm
              0.39574045 = fieldWeight in 1626, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0625 = fieldNorm(doc=1626)
          0.21692464 = weight(abstract_txt:hypothesis in 1626) [ClassicSimilarity], result of:
            0.21692464 = score(doc=1626,freq=1.0), product of:
              0.511528 = queryWeight, product of:
                5.259357 = boost
                6.7851496 = idf(docFreq=129, maxDocs=42306)
                0.014334328 = queryNorm
              0.42407185 = fieldWeight in 1626, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7851496 = idf(docFreq=129, maxDocs=42306)
                0.0625 = fieldNorm(doc=1626)
          0.23003122 = weight(abstract_txt:ranking in 1626) [ClassicSimilarity], result of:
            0.23003122 = score(doc=1626,freq=2.0), product of:
              0.4646839 = queryWeight, product of:
                5.788234 = boost
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.014334328 = queryNorm
              0.49502733 = fieldWeight in 1626, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.600595 = idf(docFreq=424, maxDocs=42306)
                0.0625 = fieldNorm(doc=1626)
        0.28 = coord(7/25)