Document (#31343)

Author
Koshman, S.
Spink, A.
Jansen, B.J.
Title
Web searching on the Vivisimo search engine
Source
Journal of the American Society for Information Science and Technology. 57(2006) no.14, S.1875-1887
Year
2006
Abstract
The application of clustering to Web search engine technology is a novel approach that offers structure to the information deluge often faced by Web searchers. Clustering methods have been well studied in research labs; however, real user searching with clustering systems in operational Web environments is not well understood. This article reports on results from a transaction log analysis of Vivisimo.com, which is a Web meta-search engine that dynamically clusters users' search results. A transaction log analysis was conducted on 2-week's worth of data collected from March 28 to April 4 and April 25 to May 2, 2004, representing 100% of site traffic during these periods and 2,029,734 queries overall. The results show that the highest percentage of queries contained two terms. The highest percentage of search sessions contained one query and was less than 1 minute in duration. Almost half of user interactions with clusters consisted of displaying a cluster's result set, and a small percentage of interactions showed cluster tree expansion. Findings show that 11.1% of search sessions were multitasking searches, and there are a broad variety of search topics in multitasking search sessions. Other searching interactions and statistics on repeat users of the search engine are reported. These results provide insights into search characteristics with a cluster-based Web search engine and extend research into Web searching trends.
Theme
Suchmaschinen
Object
Vivisimo

Similar documents (author)

  1. Jansen, B.J.; Spink, A.; Koshman, S.: Web searcher interaction with the Dogpile.com metasearch engine (2007) 5.27
    5.268654 = sum of:
      5.268654 = sum of:
        1.2363315 = weight(author_txt:spink in 2271) [ClassicSimilarity], result of:
          1.2363315 = score(doc=2271,freq=1.0), product of:
            0.4512458 = queryWeight, product of:
              7.306182 = idf(docFreq=77, maxDocs=42740)
              0.06176219 = queryNorm
            2.739818 = fieldWeight in 2271, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.306182 = idf(docFreq=77, maxDocs=42740)
              0.375 = fieldNorm(doc=2271)
        1.4325604 = weight(author_txt:jansen in 2271) [ClassicSimilarity], result of:
          1.4325604 = score(doc=2271,freq=1.0), product of:
            0.49781182 = queryWeight, product of:
              1.0503306 = boost
              7.6739063 = idf(docFreq=53, maxDocs=42740)
              0.06176219 = queryNorm
            2.8777149 = fieldWeight in 2271, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.6739063 = idf(docFreq=53, maxDocs=42740)
              0.375 = fieldNorm(doc=2271)
        2.599762 = weight(author_txt:koshman in 2271) [ClassicSimilarity], result of:
          2.599762 = score(doc=2271,freq=1.0), product of:
            0.74064875 = queryWeight, product of:
              1.2811488 = boost
              9.360306 = idf(docFreq=9, maxDocs=42740)
              0.06176219 = queryNorm
            3.5101147 = fieldWeight in 2271, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.360306 = idf(docFreq=9, maxDocs=42740)
              0.375 = fieldNorm(doc=2271)
    
  2. Jansen, B.J.; Spink, A.; Blakely, C.; Koshman, S.: Defining a session on Web search engines (2007) 4.39
    4.390545 = sum of:
      4.390545 = sum of:
        1.0302763 = weight(author_txt:spink in 2286) [ClassicSimilarity], result of:
          1.0302763 = score(doc=2286,freq=1.0), product of:
            0.4512458 = queryWeight, product of:
              7.306182 = idf(docFreq=77, maxDocs=42740)
              0.06176219 = queryNorm
            2.283182 = fieldWeight in 2286, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.306182 = idf(docFreq=77, maxDocs=42740)
              0.3125 = fieldNorm(doc=2286)
        1.1938003 = weight(author_txt:jansen in 2286) [ClassicSimilarity], result of:
          1.1938003 = score(doc=2286,freq=1.0), product of:
            0.49781182 = queryWeight, product of:
              1.0503306 = boost
              7.6739063 = idf(docFreq=53, maxDocs=42740)
              0.06176219 = queryNorm
            2.3980956 = fieldWeight in 2286, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.6739063 = idf(docFreq=53, maxDocs=42740)
              0.3125 = fieldNorm(doc=2286)
        2.1664684 = weight(author_txt:koshman in 2286) [ClassicSimilarity], result of:
          2.1664684 = score(doc=2286,freq=1.0), product of:
            0.74064875 = queryWeight, product of:
              1.2811488 = boost
              9.360306 = idf(docFreq=9, maxDocs=42740)
              0.06176219 = queryNorm
            2.9250956 = fieldWeight in 2286, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.360306 = idf(docFreq=9, maxDocs=42740)
              0.3125 = fieldNorm(doc=2286)
    
  3. Spink, A.; Jansen, B.J.; Blakely, C.; Koshman, S.: ¬A study of results overlap and uniqueness among major Web search engines (2006) 4.39
    4.390545 = sum of:
      4.390545 = sum of:
        1.0302763 = weight(author_txt:spink in 2994) [ClassicSimilarity], result of:
          1.0302763 = score(doc=2994,freq=1.0), product of:
            0.4512458 = queryWeight, product of:
              7.306182 = idf(docFreq=77, maxDocs=42740)
              0.06176219 = queryNorm
            2.283182 = fieldWeight in 2994, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.306182 = idf(docFreq=77, maxDocs=42740)
              0.3125 = fieldNorm(doc=2994)
        1.1938003 = weight(author_txt:jansen in 2994) [ClassicSimilarity], result of:
          1.1938003 = score(doc=2994,freq=1.0), product of:
            0.49781182 = queryWeight, product of:
              1.0503306 = boost
              7.6739063 = idf(docFreq=53, maxDocs=42740)
              0.06176219 = queryNorm
            2.3980956 = fieldWeight in 2994, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.6739063 = idf(docFreq=53, maxDocs=42740)
              0.3125 = fieldNorm(doc=2994)
        2.1664684 = weight(author_txt:koshman in 2994) [ClassicSimilarity], result of:
          2.1664684 = score(doc=2994,freq=1.0), product of:
            0.74064875 = queryWeight, product of:
              1.2811488 = boost
              9.360306 = idf(docFreq=9, maxDocs=42740)
              0.06176219 = queryNorm
            2.9250956 = fieldWeight in 2994, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.360306 = idf(docFreq=9, maxDocs=42740)
              0.3125 = fieldNorm(doc=2994)
    
  4. Spink, A.; Park, M.; Koshman, S.: Factors affecting assigned information problem ordering during Web search : an exploratory study (2006) 2.56
    2.5573957 = sum of:
      2.5573957 = product of:
        3.8360934 = sum of:
          1.2363315 = weight(author_txt:spink in 2992) [ClassicSimilarity], result of:
            1.2363315 = score(doc=2992,freq=1.0), product of:
              0.4512458 = queryWeight, product of:
                7.306182 = idf(docFreq=77, maxDocs=42740)
                0.06176219 = queryNorm
              2.739818 = fieldWeight in 2992, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.306182 = idf(docFreq=77, maxDocs=42740)
                0.375 = fieldNorm(doc=2992)
          2.599762 = weight(author_txt:koshman in 2992) [ClassicSimilarity], result of:
            2.599762 = score(doc=2992,freq=1.0), product of:
              0.74064875 = queryWeight, product of:
                1.2811488 = boost
                9.360306 = idf(docFreq=9, maxDocs=42740)
                0.06176219 = queryNorm
              3.5101147 = fieldWeight in 2992, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.360306 = idf(docFreq=9, maxDocs=42740)
                0.375 = fieldNorm(doc=2992)
        0.6666667 = coord(2/3)
    
  5. Jansen, B.J.; Spink, A.: How are we searching the World Wide Web? : A comparison of nine search engine transaction logs (2006) 2.37
    2.3723485 = sum of:
      2.3723485 = product of:
        3.5585227 = sum of:
          1.648442 = weight(author_txt:spink in 2969) [ClassicSimilarity], result of:
            1.648442 = score(doc=2969,freq=1.0), product of:
              0.4512458 = queryWeight, product of:
                7.306182 = idf(docFreq=77, maxDocs=42740)
                0.06176219 = queryNorm
              3.653091 = fieldWeight in 2969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.306182 = idf(docFreq=77, maxDocs=42740)
                0.5 = fieldNorm(doc=2969)
          1.9100807 = weight(author_txt:jansen in 2969) [ClassicSimilarity], result of:
            1.9100807 = score(doc=2969,freq=1.0), product of:
              0.49781182 = queryWeight, product of:
                1.0503306 = boost
                7.6739063 = idf(docFreq=53, maxDocs=42740)
                0.06176219 = queryNorm
              3.8369532 = fieldWeight in 2969, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.6739063 = idf(docFreq=53, maxDocs=42740)
                0.5 = fieldNorm(doc=2969)
        0.6666667 = coord(2/3)
    

Similar documents (content)

  1. Spink, A.; Park, M.; Jansen, B.J.; Pedersen, J.: Elicitation and use of relevance feedback information (2006) 0.63
    0.6263749 = sum of:
      0.6263749 = product of:
        1.5659372 = sum of:
          0.072579 = weight(abstract_txt:duration in 2968) [ClassicSimilarity], result of:
            0.072579 = score(doc=2968,freq=1.0), product of:
              0.14056005 = queryWeight, product of:
                1.0424559 = boost
                8.261693 = idf(docFreq=29, maxDocs=42740)
                0.016320564 = queryNorm
              0.5163558 = fieldWeight in 2968, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.261693 = idf(docFreq=29, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.0774909 = weight(abstract_txt:minute in 2968) [ClassicSimilarity], result of:
            0.0774909 = score(doc=2968,freq=1.0), product of:
              0.14683235 = queryWeight, product of:
                1.065461 = boost
                8.444015 = idf(docFreq=24, maxDocs=42740)
                0.016320564 = queryNorm
              0.5277509 = fieldWeight in 2968, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.444015 = idf(docFreq=24, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.047984395 = weight(abstract_txt:queries in 2968) [ClassicSimilarity], result of:
            0.047984395 = score(doc=2968,freq=2.0), product of:
              0.106673025 = queryWeight, product of:
                1.2843075 = boost
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.016320564 = queryNorm
              0.4498269 = fieldWeight in 2968, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.066054605 = weight(abstract_txt:contained in 2968) [ClassicSimilarity], result of:
            0.066054605 = score(doc=2968,freq=1.0), product of:
              0.16631572 = queryWeight, product of:
                1.6036456 = boost
                6.354623 = idf(docFreq=201, maxDocs=42740)
                0.016320564 = queryNorm
              0.39716393 = fieldWeight in 2968, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.354623 = idf(docFreq=201, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.08050083 = weight(abstract_txt:transaction in 2968) [ClassicSimilarity], result of:
            0.08050083 = score(doc=2968,freq=1.0), product of:
              0.18975715 = queryWeight, product of:
                1.7129347 = boost
                6.787693 = idf(docFreq=130, maxDocs=42740)
                0.016320564 = queryNorm
              0.4242308 = fieldWeight in 2968, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.787693 = idf(docFreq=130, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.040019423 = weight(abstract_txt:searching in 2968) [ClassicSimilarity], result of:
            0.040019423 = score(doc=2968,freq=1.0), product of:
              0.15003358 = queryWeight, product of:
                2.154026 = boost
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.016320564 = queryNorm
              0.26673645 = fieldWeight in 2968, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.38859016 = weight(abstract_txt:multitasking in 2968) [ClassicSimilarity], result of:
            0.38859016 = score(doc=2968,freq=5.0), product of:
              0.31695852 = queryWeight, product of:
                2.2138233 = boost
                8.772519 = idf(docFreq=17, maxDocs=42740)
                0.016320564 = queryNorm
              1.2259969 = fieldWeight in 2968, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                8.772519 = idf(docFreq=17, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.3876062 = weight(abstract_txt:sessions in 2968) [ClassicSimilarity], result of:
            0.3876062 = score(doc=2968,freq=11.0), product of:
              0.2784996 = queryWeight, product of:
                2.541556 = boost
                6.7141304 = idf(docFreq=140, maxDocs=42740)
                0.016320564 = queryNorm
              1.3917657 = fieldWeight in 2968, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                6.7141304 = idf(docFreq=140, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.18712845 = weight(abstract_txt:engine in 2968) [ClassicSimilarity], result of:
            0.18712845 = score(doc=2968,freq=3.0), product of:
              0.31335074 = queryWeight, product of:
                3.4803834 = boost
                5.5165615 = idf(docFreq=466, maxDocs=42740)
                0.016320564 = queryNorm
              0.5971853 = fieldWeight in 2968, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.5165615 = idf(docFreq=466, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
          0.21798323 = weight(abstract_txt:search in 2968) [ClassicSimilarity], result of:
            0.21798323 = score(doc=2968,freq=10.0), product of:
              0.30204213 = queryWeight, product of:
                5.068236 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.016320564 = queryNorm
              0.7216981 = fieldWeight in 2968, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.0625 = fieldNorm(doc=2968)
        0.4 = coord(10/25)
    
  2. Spink, A.; Ozmutlu, H.C.; Ozmutlu, S.: Multitasking information seeking and searching processes (2002) 0.34
    0.34326434 = sum of:
      0.34326434 = product of:
        1.0727011 = sum of:
          0.0199057 = weight(abstract_txt:show in 1601) [ClassicSimilarity], result of:
            0.0199057 = score(doc=1601,freq=1.0), product of:
              0.0817167 = queryWeight, product of:
                1.1240798 = boost
                4.4542904 = idf(docFreq=1350, maxDocs=42740)
                0.016320564 = queryNorm
              0.243594 = fieldWeight in 1601, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4542904 = idf(docFreq=1350, maxDocs=42740)
                0.0546875 = fieldNorm(doc=1601)
          0.010714287 = weight(abstract_txt:that in 1601) [ClassicSimilarity], result of:
            0.010714287 = score(doc=1601,freq=3.0), product of:
              0.04723577 = queryWeight, product of:
                1.2086267 = boost
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.016320564 = queryNorm
              0.22682571 = fieldWeight in 1601, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.0546875 = fieldNorm(doc=1601)
          0.07043823 = weight(abstract_txt:transaction in 1601) [ClassicSimilarity], result of:
            0.07043823 = score(doc=1601,freq=1.0), product of:
              0.18975715 = queryWeight, product of:
                1.7129347 = boost
                6.787693 = idf(docFreq=130, maxDocs=42740)
                0.016320564 = queryNorm
              0.37120196 = fieldWeight in 1601, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.787693 = idf(docFreq=130, maxDocs=42740)
                0.0546875 = fieldNorm(doc=1601)
          0.09264626 = weight(abstract_txt:searching in 1601) [ClassicSimilarity], result of:
            0.09264626 = score(doc=1601,freq=7.0), product of:
              0.15003358 = queryWeight, product of:
                2.154026 = boost
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.016320564 = queryNorm
              0.6175035 = fieldWeight in 1601, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.0546875 = fieldNorm(doc=1601)
          0.43009046 = weight(abstract_txt:multitasking in 1601) [ClassicSimilarity], result of:
            0.43009046 = score(doc=1601,freq=8.0), product of:
              0.31695852 = queryWeight, product of:
                2.2138233 = boost
                8.772519 = idf(docFreq=17, maxDocs=42740)
                0.016320564 = queryNorm
              1.3569298 = fieldWeight in 1601, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                8.772519 = idf(docFreq=17, maxDocs=42740)
                0.0546875 = fieldNorm(doc=1601)
          0.14461635 = weight(abstract_txt:sessions in 1601) [ClassicSimilarity], result of:
            0.14461635 = score(doc=1601,freq=2.0), product of:
              0.2784996 = queryWeight, product of:
                2.541556 = boost
                6.7141304 = idf(docFreq=140, maxDocs=42740)
                0.016320564 = queryNorm
              0.5192695 = fieldWeight in 1601, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.7141304 = idf(docFreq=140, maxDocs=42740)
                0.0546875 = fieldNorm(doc=1601)
          0.13369103 = weight(abstract_txt:engine in 1601) [ClassicSimilarity], result of:
            0.13369103 = score(doc=1601,freq=2.0), product of:
              0.31335074 = queryWeight, product of:
                3.4803834 = boost
                5.5165615 = idf(docFreq=466, maxDocs=42740)
                0.016320564 = queryNorm
              0.42664978 = fieldWeight in 1601, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5165615 = idf(docFreq=466, maxDocs=42740)
                0.0546875 = fieldNorm(doc=1601)
          0.17059885 = weight(abstract_txt:search in 1601) [ClassicSimilarity], result of:
            0.17059885 = score(doc=1601,freq=8.0), product of:
              0.30204213 = queryWeight, product of:
                5.068236 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.016320564 = queryNorm
              0.5648181 = fieldWeight in 1601, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.0546875 = fieldNorm(doc=1601)
        0.32 = coord(8/25)
    
  3. Jansen, B.J.; Spink, A.; Koshman, S.: Web searcher interaction with the Dogpile.com metasearch engine (2007) 0.30
    0.3046014 = sum of:
      0.3046014 = product of:
        0.7615035 = sum of:
          0.0774909 = weight(abstract_txt:minute in 2271) [ClassicSimilarity], result of:
            0.0774909 = score(doc=2271,freq=1.0), product of:
              0.14683235 = queryWeight, product of:
                1.065461 = boost
                8.444015 = idf(docFreq=24, maxDocs=42740)
                0.016320564 = queryNorm
              0.5277509 = fieldWeight in 2271, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.444015 = idf(docFreq=24, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.02274937 = weight(abstract_txt:show in 2271) [ClassicSimilarity], result of:
            0.02274937 = score(doc=2271,freq=1.0), product of:
              0.0817167 = queryWeight, product of:
                1.1240798 = boost
                4.4542904 = idf(docFreq=1350, maxDocs=42740)
                0.016320564 = queryNorm
              0.27839315 = fieldWeight in 2271, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4542904 = idf(docFreq=1350, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.007069596 = weight(abstract_txt:that in 2271) [ClassicSimilarity], result of:
            0.007069596 = score(doc=2271,freq=1.0), product of:
              0.04723577 = queryWeight, product of:
                1.2086267 = boost
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.016320564 = queryNorm
              0.14966616 = fieldWeight in 2271, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.033930093 = weight(abstract_txt:queries in 2271) [ClassicSimilarity], result of:
            0.033930093 = score(doc=2271,freq=1.0), product of:
              0.106673025 = queryWeight, product of:
                1.2843075 = boost
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.016320564 = queryNorm
              0.31807566 = fieldWeight in 2271, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.03846992 = weight(abstract_txt:results in 2271) [ClassicSimilarity], result of:
            0.03846992 = score(doc=2271,freq=3.0), product of:
              0.10132463 = queryWeight, product of:
                1.770167 = boost
                3.5072412 = idf(docFreq=3482, maxDocs=42740)
                0.016320564 = queryNorm
              0.37967 = fieldWeight in 2271, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.5072412 = idf(docFreq=3482, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.05659601 = weight(abstract_txt:searching in 2271) [ClassicSimilarity], result of:
            0.05659601 = score(doc=2271,freq=2.0), product of:
              0.15003358 = queryWeight, product of:
                2.154026 = boost
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.016320564 = queryNorm
              0.3772223 = fieldWeight in 2271, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.08773771 = weight(abstract_txt:interactions in 2271) [ClassicSimilarity], result of:
            0.08773771 = score(doc=2271,freq=1.0), product of:
              0.23004839 = queryWeight, product of:
                2.30992 = boost
                6.102209 = idf(docFreq=259, maxDocs=42740)
                0.016320564 = queryNorm
              0.38138807 = fieldWeight in 2271, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.102209 = idf(docFreq=259, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.16527584 = weight(abstract_txt:sessions in 2271) [ClassicSimilarity], result of:
            0.16527584 = score(doc=2271,freq=2.0), product of:
              0.2784996 = queryWeight, product of:
                2.541556 = boost
                6.7141304 = idf(docFreq=140, maxDocs=42740)
                0.016320564 = queryNorm
              0.5934509 = fieldWeight in 2271, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.7141304 = idf(docFreq=140, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.15278974 = weight(abstract_txt:engine in 2271) [ClassicSimilarity], result of:
            0.15278974 = score(doc=2271,freq=2.0), product of:
              0.31335074 = queryWeight, product of:
                3.4803834 = boost
                5.5165615 = idf(docFreq=466, maxDocs=42740)
                0.016320564 = queryNorm
              0.48759976 = fieldWeight in 2271, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5165615 = idf(docFreq=466, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
          0.119394325 = weight(abstract_txt:search in 2271) [ClassicSimilarity], result of:
            0.119394325 = score(doc=2271,freq=3.0), product of:
              0.30204213 = queryWeight, product of:
                5.068236 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.016320564 = queryNorm
              0.39529032 = fieldWeight in 2271, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.0625 = fieldNorm(doc=2271)
        0.4 = coord(10/25)
    
  4. He, J.; Meij, E.; Rijke, M. de: Result diversification based on query-specific cluster ranking (2011) 0.26
    0.2567723 = sum of:
      0.2567723 = product of:
        0.71325636 = sum of:
          0.02274937 = weight(abstract_txt:show in 1356) [ClassicSimilarity], result of:
            0.02274937 = score(doc=1356,freq=1.0), product of:
              0.0817167 = queryWeight, product of:
                1.1240798 = boost
                4.4542904 = idf(docFreq=1350, maxDocs=42740)
                0.016320564 = queryNorm
              0.27839315 = fieldWeight in 1356, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4542904 = idf(docFreq=1350, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
          0.015808098 = weight(abstract_txt:that in 1356) [ClassicSimilarity], result of:
            0.015808098 = score(doc=1356,freq=5.0), product of:
              0.04723577 = queryWeight, product of:
                1.2086267 = boost
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.016320564 = queryNorm
              0.33466372 = fieldWeight in 1356, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.3946586 = idf(docFreq=10595, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
          0.033930093 = weight(abstract_txt:queries in 1356) [ClassicSimilarity], result of:
            0.033930093 = score(doc=1356,freq=1.0), product of:
              0.106673025 = queryWeight, product of:
                1.2843075 = boost
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.016320564 = queryNorm
              0.31807566 = fieldWeight in 1356, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
          0.066054605 = weight(abstract_txt:contained in 1356) [ClassicSimilarity], result of:
            0.066054605 = score(doc=1356,freq=1.0), product of:
              0.16631572 = queryWeight, product of:
                1.6036456 = boost
                6.354623 = idf(docFreq=201, maxDocs=42740)
                0.016320564 = queryNorm
              0.39716393 = fieldWeight in 1356, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.354623 = idf(docFreq=201, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
          0.21474063 = weight(abstract_txt:clusters in 1356) [ClassicSimilarity], result of:
            0.21474063 = score(doc=1356,freq=9.0), product of:
              0.1754661 = queryWeight, product of:
                1.6471697 = boost
                6.527092 = idf(docFreq=169, maxDocs=42740)
                0.016320564 = queryNorm
              1.2238297 = fieldWeight in 1356, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                6.527092 = idf(docFreq=169, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
          0.10291075 = weight(abstract_txt:cluster in 1356) [ClassicSimilarity], result of:
            0.10291075 = score(doc=1356,freq=2.0), product of:
              0.17740333 = queryWeight, product of:
                1.6562375 = boost
                6.563024 = idf(docFreq=163, maxDocs=42740)
                0.016320564 = queryNorm
              0.5800948 = fieldWeight in 1356, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.563024 = idf(docFreq=163, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
          0.02221062 = weight(abstract_txt:results in 1356) [ClassicSimilarity], result of:
            0.02221062 = score(doc=1356,freq=1.0), product of:
              0.10132463 = queryWeight, product of:
                1.770167 = boost
                3.5072412 = idf(docFreq=3482, maxDocs=42740)
                0.016320564 = queryNorm
              0.21920258 = fieldWeight in 1356, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5072412 = idf(docFreq=3482, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
          0.092938416 = weight(abstract_txt:clustering in 1356) [ClassicSimilarity], result of:
            0.092938416 = score(doc=1356,freq=1.0), product of:
              0.2390517 = queryWeight, product of:
                2.3546875 = boost
                6.220473 = idf(docFreq=230, maxDocs=42740)
                0.016320564 = queryNorm
              0.38877955 = fieldWeight in 1356, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.220473 = idf(docFreq=230, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
          0.14191377 = weight(abstract_txt:percentage in 1356) [ClassicSimilarity], result of:
            0.14191377 = score(doc=1356,freq=1.0), product of:
              0.31698936 = queryWeight, product of:
                2.7115006 = boost
                7.1630807 = idf(docFreq=89, maxDocs=42740)
                0.016320564 = queryNorm
              0.44769254 = fieldWeight in 1356, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.1630807 = idf(docFreq=89, maxDocs=42740)
                0.0625 = fieldNorm(doc=1356)
        0.36 = coord(9/25)
    
  5. Tjondronegoro, D.; Spink, A.; Jansen, B.J.: ¬A study and comparison of multimedia Web searching : 1997-2006 (2009) 0.26
    0.25559545 = sum of:
      0.25559545 = product of:
        0.7987358 = sum of:
          0.1026422 = weight(abstract_txt:duration in 91) [ClassicSimilarity], result of:
            0.1026422 = score(doc=91,freq=2.0), product of:
              0.14056005 = queryWeight, product of:
                1.0424559 = boost
                8.261693 = idf(docFreq=29, maxDocs=42740)
                0.016320564 = queryNorm
              0.73023736 = fieldWeight in 91, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.261693 = idf(docFreq=29, maxDocs=42740)
                0.0625 = fieldNorm(doc=91)
          0.033930093 = weight(abstract_txt:queries in 91) [ClassicSimilarity], result of:
            0.033930093 = score(doc=91,freq=1.0), product of:
              0.106673025 = queryWeight, product of:
                1.2843075 = boost
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.016320564 = queryNorm
              0.31807566 = fieldWeight in 91, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0892105 = idf(docFreq=715, maxDocs=42740)
                0.0625 = fieldNorm(doc=91)
          0.03141056 = weight(abstract_txt:results in 91) [ClassicSimilarity], result of:
            0.03141056 = score(doc=91,freq=2.0), product of:
              0.10132463 = queryWeight, product of:
                1.770167 = boost
                3.5072412 = idf(docFreq=3482, maxDocs=42740)
                0.016320564 = queryNorm
              0.30999926 = fieldWeight in 91, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5072412 = idf(docFreq=3482, maxDocs=42740)
                0.0625 = fieldNorm(doc=91)
          0.08948615 = weight(abstract_txt:searching in 91) [ClassicSimilarity], result of:
            0.08948615 = score(doc=91,freq=5.0), product of:
              0.15003358 = queryWeight, product of:
                2.154026 = boost
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.016320564 = queryNorm
              0.59644085 = fieldWeight in 91, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.267783 = idf(docFreq=1627, maxDocs=42740)
                0.0625 = fieldNorm(doc=91)
          0.08773771 = weight(abstract_txt:interactions in 91) [ClassicSimilarity], result of:
            0.08773771 = score(doc=91,freq=1.0), product of:
              0.23004839 = queryWeight, product of:
                2.30992 = boost
                6.102209 = idf(docFreq=259, maxDocs=42740)
                0.016320564 = queryNorm
              0.38138807 = fieldWeight in 91, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.102209 = idf(docFreq=259, maxDocs=42740)
                0.0625 = fieldNorm(doc=91)
          0.11686767 = weight(abstract_txt:sessions in 91) [ClassicSimilarity], result of:
            0.11686767 = score(doc=91,freq=1.0), product of:
              0.2784996 = queryWeight, product of:
                2.541556 = boost
                6.7141304 = idf(docFreq=140, maxDocs=42740)
                0.016320564 = queryNorm
              0.41963315 = fieldWeight in 91, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7141304 = idf(docFreq=140, maxDocs=42740)
                0.0625 = fieldNorm(doc=91)
          0.108038664 = weight(abstract_txt:engine in 91) [ClassicSimilarity], result of:
            0.108038664 = score(doc=91,freq=1.0), product of:
              0.31335074 = queryWeight, product of:
                3.4803834 = boost
                5.5165615 = idf(docFreq=466, maxDocs=42740)
                0.016320564 = queryNorm
              0.3447851 = fieldWeight in 91, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5165615 = idf(docFreq=466, maxDocs=42740)
                0.0625 = fieldNorm(doc=91)
          0.22862273 = weight(abstract_txt:search in 91) [ClassicSimilarity], result of:
            0.22862273 = score(doc=91,freq=11.0), product of:
              0.30204213 = queryWeight, product of:
                5.068236 = boost
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.016320564 = queryNorm
              0.7569233 = fieldWeight in 91, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                3.6515355 = idf(docFreq=3014, maxDocs=42740)
                0.0625 = fieldNorm(doc=91)
        0.32 = coord(8/25)