Document (#23585)

Author
Bilal, D.
Title
Children's use of the Yahooligans! Web search engine : II. Cognitive and physical behaviors on research tasks
Source
Journal of the American Society for Information Science and technology. 52(2001) no.2, S.118-136
Year
2001
Abstract
This study reports the results of Part 11 of a research project that investigated the cognitive and physical behaviors of middle school students in using Yahooligans! Seventeen students in the seventh grade searched Yahooligans! to locate relevant information for an assigned research task. Sixty-nine percent partially succeeded, while 31 % failed. Children had difficulty completing the task mainly because they lacked adequate level of research skills and approached the task by seeking specific answers. Children's cognitive and physical behaviors varied by success levels. Similarities and differences in children's cognitive and physical behaviors were found between the research task and the factbased task they performed in the previous study. The present study considers the impact of prior experience in using the Web, domain knowledge, topic knowledge, and reading ability on children's success. It reports the overall patterns of children's behaviors, including searching and browsing moves, backtracking and looping moves, and navigational styles, as well as the time taken to complete the research task. Children expressed their information needs and provided recommendations for improving the interface design of Yahooligans! Implications for formal Web training and system design improvements are discussed
Theme
Suchmaschinen
Benutzerstudien
Object
Yahooligans

Similar documents (author)

  1. Bilal, D.: Children's use of the Yahooligans! Web search engine : I. Cognitive, physical, and affective behaviors on fact-based search tasks (2000) 5.64
    5.639896 = sum of:
      5.639896 = weight(author_txt:bilal in 5777) [ClassicSimilarity], result of:
        5.639896 = fieldWeight in 5777, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.023833 = idf(docFreq=13, maxDocs=42740)
          0.625 = fieldNorm(doc=5777)
    
  2. Bilal, D.: Web search engines for children : a comparative study and performance evaluation of Yahooligans!, AskJeeves for Kids, and Super Snooper (1999) 5.64
    5.639896 = sum of:
      5.639896 = weight(author_txt:bilal in 545) [ClassicSimilarity], result of:
        5.639896 = fieldWeight in 545, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.023833 = idf(docFreq=13, maxDocs=42740)
          0.625 = fieldNorm(doc=545)
    
  3. Bilal, D.: Children's use of the Yahooligans! Web search engine : III. Cognitive and physical behaviors on fully self-generated search tasks (2002) 5.64
    5.639896 = sum of:
      5.639896 = weight(author_txt:bilal in 229) [ClassicSimilarity], result of:
        5.639896 = fieldWeight in 229, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.023833 = idf(docFreq=13, maxDocs=42740)
          0.625 = fieldNorm(doc=229)
    
  4. Bilal, D.: Percentile ranks and the integrated impact indicator (I3) (2012) 5.64
    5.639896 = sum of:
      5.639896 = weight(author_txt:bilal in 2393) [ClassicSimilarity], result of:
        5.639896 = fieldWeight in 2393, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.023833 = idf(docFreq=13, maxDocs=42740)
          0.625 = fieldNorm(doc=2393)
    
  5. Bilal, D.: Ranking, relevance judgment, and precision of information retrieval on children's queries : evaluation of Google, Yahoo!, Bing, Yahoo! Kids, and ask Kids (2012) 5.64
    5.639896 = sum of:
      5.639896 = weight(author_txt:bilal in 2394) [ClassicSimilarity], result of:
        5.639896 = fieldWeight in 2394, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.023833 = idf(docFreq=13, maxDocs=42740)
          0.625 = fieldNorm(doc=2394)
    

Similar documents (content)

  1. Bilal, D.: Children's use of the Yahooligans! Web search engine : I. Cognitive, physical, and affective behaviors on fact-based search tasks (2000) 1.30
    1.2951165 = sum of:
      1.2951165 = product of:
        1.9045832 = sum of:
          0.041115902 = weight(abstract_txt:middle in 5777) [ClassicSimilarity], result of:
            0.041115902 = score(doc=5777,freq=1.0), product of:
              0.08906505 = queryWeight, product of:
                7.3862243 = idf(docFreq=71, maxDocs=42740)
                0.0120582655 = queryNorm
              0.46163902 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3862243 = idf(docFreq=71, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.011036629 = weight(abstract_txt:they in 5777) [ClassicSimilarity], result of:
            0.011036629 = score(doc=5777,freq=1.0), product of:
              0.04669479 = queryWeight, product of:
                1.0239896 = boost
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.0120582655 = queryNorm
              0.23635677 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.048265554 = weight(abstract_txt:grade in 5777) [ClassicSimilarity], result of:
            0.048265554 = score(doc=5777,freq=1.0), product of:
              0.09911186 = queryWeight, product of:
                1.0548948 = boost
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0120582655 = queryNorm
              0.4869806 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.012546789 = weight(abstract_txt:design in 5777) [ClassicSimilarity], result of:
            0.012546789 = score(doc=5777,freq=1.0), product of:
              0.05086267 = queryWeight, product of:
                1.0687126 = boost
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.0120582655 = queryNorm
              0.24667971 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.019523624 = weight(abstract_txt:reports in 5777) [ClassicSimilarity], result of:
            0.019523624 = score(doc=5777,freq=1.0), product of:
              0.06829953 = queryWeight, product of:
                1.2384263 = boost
                4.5736475 = idf(docFreq=1198, maxDocs=42740)
                0.0120582655 = queryNorm
              0.28585297 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5736475 = idf(docFreq=1198, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.08367823 = weight(abstract_txt:seventh in 5777) [ClassicSimilarity], result of:
            0.08367823 = score(doc=5777,freq=1.0), product of:
              0.14303504 = queryWeight, product of:
                1.2672653 = boost
                9.360306 = idf(docFreq=9, maxDocs=42740)
                0.0120582655 = queryNorm
              0.5850191 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.360306 = idf(docFreq=9, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.012799117 = weight(abstract_txt:study in 5777) [ClassicSimilarity], result of:
            0.012799117 = score(doc=5777,freq=1.0), product of:
              0.059001245 = queryWeight, product of:
                1.4097352 = boost
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0120582655 = queryNorm
              0.2169296 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.038035884 = weight(abstract_txt:success in 5777) [ClassicSimilarity], result of:
            0.038035884 = score(doc=5777,freq=1.0), product of:
              0.10653847 = queryWeight, product of:
                1.5467302 = boost
                5.712248 = idf(docFreq=383, maxDocs=42740)
                0.0120582655 = queryNorm
              0.3570155 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.712248 = idf(docFreq=383, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.06514892 = weight(abstract_txt:children in 5777) [ClassicSimilarity], result of:
            0.06514892 = score(doc=5777,freq=1.0), product of:
              0.15251607 = queryWeight, product of:
                1.850628 = boost
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.0120582655 = queryNorm
              0.42716104 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.1251194 = weight(abstract_txt:moves in 5777) [ClassicSimilarity], result of:
            0.1251194 = score(doc=5777,freq=2.0), product of:
              0.18703255 = queryWeight, product of:
                2.049368 = boost
                7.568546 = idf(docFreq=59, maxDocs=42740)
                0.0120582655 = queryNorm
              0.66897124 = fieldWeight in 5777, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.568546 = idf(docFreq=59, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.02032458 = weight(abstract_txt:research in 5777) [ClassicSimilarity], result of:
            0.02032458 = score(doc=5777,freq=1.0), product of:
              0.101180986 = queryWeight, product of:
                2.610787 = boost
                3.2139761 = idf(docFreq=4669, maxDocs=42740)
                0.0120582655 = queryNorm
              0.20087351 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2139761 = idf(docFreq=4669, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.08534117 = weight(abstract_txt:cognitive in 5777) [ClassicSimilarity], result of:
            0.08534117 = score(doc=5777,freq=2.0), product of:
              0.1825926 = queryWeight, product of:
                2.8636367 = boost
                5.2878656 = idf(docFreq=586, maxDocs=42740)
                0.0120582655 = queryNorm
              0.4673857 = fieldWeight in 5777, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.2878656 = idf(docFreq=586, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.10728849 = weight(abstract_txt:physical in 5777) [ClassicSimilarity], result of:
            0.10728849 = score(doc=5777,freq=2.0), product of:
              0.21268958 = queryWeight, product of:
                3.0906472 = boost
                5.707053 = idf(docFreq=385, maxDocs=42740)
                0.0120582655 = queryNorm
              0.50443697 = fieldWeight in 5777, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.707053 = idf(docFreq=385, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.07365334 = weight(abstract_txt:task in 5777) [ClassicSimilarity], result of:
            0.07365334 = score(doc=5777,freq=1.0), product of:
              0.23871487 = queryWeight, product of:
                4.01016 = boost
                4.936657 = idf(docFreq=833, maxDocs=42740)
                0.0120582655 = queryNorm
              0.30854106 = fieldWeight in 5777, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.936657 = idf(docFreq=833, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.17329755 = weight(abstract_txt:behaviors in 5777) [ClassicSimilarity], result of:
            0.17329755 = score(doc=5777,freq=2.0), product of:
              0.3154102 = queryWeight, product of:
                4.207937 = boost
                6.216153 = idf(docFreq=231, maxDocs=42740)
                0.0120582655 = queryNorm
              0.5494355 = fieldWeight in 5777, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.216153 = idf(docFreq=231, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.38787043 = weight(abstract_txt:children's in 5777) [ClassicSimilarity], result of:
            0.38787043 = score(doc=5777,freq=4.0), product of:
              0.42834648 = queryWeight, product of:
                4.903757 = boost
                7.24405 = idf(docFreq=82, maxDocs=42740)
                0.0120582655 = queryNorm
              0.90550625 = fieldWeight in 5777, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.24405 = idf(docFreq=82, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
          0.5995377 = weight(abstract_txt:yahooligans in 5777) [ClassicSimilarity], result of:
            0.5995377 = score(doc=5777,freq=3.0), product of:
              0.58509266 = queryWeight, product of:
                5.1261187 = boost
                9.465666 = idf(docFreq=8, maxDocs=42740)
                0.0120582655 = queryNorm
              1.0246884 = fieldWeight in 5777, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                9.465666 = idf(docFreq=8, maxDocs=42740)
                0.0625 = fieldNorm(doc=5777)
        0.68 = coord(17/25)
    
  2. Bilal, D.; Kirby, J.: Differences and similarities in information seeking : children and adults as Web users (2002) 1.22
    1.2241906 = sum of:
      1.2241906 = product of:
        1.9127979 = sum of:
          0.021593822 = weight(abstract_txt:they in 3592) [ClassicSimilarity], result of:
            0.021593822 = score(doc=3592,freq=5.0), product of:
              0.04669479 = queryWeight, product of:
                1.0239896 = boost
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.0120582655 = queryNorm
              0.46244606 = fieldWeight in 3592, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.042232357 = weight(abstract_txt:grade in 3592) [ClassicSimilarity], result of:
            0.042232357 = score(doc=3592,freq=1.0), product of:
              0.09911186 = queryWeight, product of:
                1.0548948 = boost
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0120582655 = queryNorm
              0.426108 = fieldWeight in 3592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.015525858 = weight(abstract_txt:design in 3592) [ClassicSimilarity], result of:
            0.015525858 = score(doc=3592,freq=2.0), product of:
              0.05086267 = queryWeight, product of:
                1.0687126 = boost
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.0120582655 = queryNorm
              0.30525056 = fieldWeight in 3592, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.07321845 = weight(abstract_txt:seventh in 3592) [ClassicSimilarity], result of:
            0.07321845 = score(doc=3592,freq=1.0), product of:
              0.14303504 = queryWeight, product of:
                1.2672653 = boost
                9.360306 = idf(docFreq=9, maxDocs=42740)
                0.0120582655 = queryNorm
              0.5118917 = fieldWeight in 3592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.360306 = idf(docFreq=9, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.07858071 = weight(abstract_txt:backtracking in 3592) [ClassicSimilarity], result of:
            0.07858071 = score(doc=3592,freq=1.0), product of:
              0.14993604 = queryWeight, product of:
                1.297476 = boost
                9.583449 = idf(docFreq=7, maxDocs=42740)
                0.0120582655 = queryNorm
              0.5240949 = fieldWeight in 3592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.583449 = idf(docFreq=7, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.06823128 = weight(abstract_txt:students in 3592) [ClassicSimilarity], result of:
            0.06823128 = score(doc=3592,freq=10.0), product of:
              0.07980456 = queryWeight, product of:
                1.3386751 = boost
                4.943877 = idf(docFreq=827, maxDocs=42740)
                0.0120582655 = queryNorm
              0.85497963 = fieldWeight in 3592, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                4.943877 = idf(docFreq=827, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.015838098 = weight(abstract_txt:study in 3592) [ClassicSimilarity], result of:
            0.015838098 = score(doc=3592,freq=2.0), product of:
              0.059001245 = queryWeight, product of:
                1.4097352 = boost
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0120582655 = queryNorm
              0.26843667 = fieldWeight in 3592, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.047067005 = weight(abstract_txt:success in 3592) [ClassicSimilarity], result of:
            0.047067005 = score(doc=3592,freq=2.0), product of:
              0.10653847 = queryWeight, product of:
                1.5467302 = boost
                5.712248 = idf(docFreq=383, maxDocs=42740)
                0.0120582655 = queryNorm
              0.44178414 = fieldWeight in 3592, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.712248 = idf(docFreq=383, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.12746775 = weight(abstract_txt:children in 3592) [ClassicSimilarity], result of:
            0.12746775 = score(doc=3592,freq=5.0), product of:
              0.15251607 = queryWeight, product of:
                1.850628 = boost
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.0120582655 = queryNorm
              0.835766 = fieldWeight in 3592, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.20481735 = weight(abstract_txt:moves in 3592) [ClassicSimilarity], result of:
            0.20481735 = score(doc=3592,freq=7.0), product of:
              0.18703255 = queryWeight, product of:
                2.049368 = boost
                7.568546 = idf(docFreq=59, maxDocs=42740)
                0.0120582655 = queryNorm
              1.0950893 = fieldWeight in 3592, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                7.568546 = idf(docFreq=59, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.052802157 = weight(abstract_txt:cognitive in 3592) [ClassicSimilarity], result of:
            0.052802157 = score(doc=3592,freq=1.0), product of:
              0.1825926 = queryWeight, product of:
                2.8636367 = boost
                5.2878656 = idf(docFreq=586, maxDocs=42740)
                0.0120582655 = queryNorm
              0.28918016 = fieldWeight in 3592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2878656 = idf(docFreq=586, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.066381365 = weight(abstract_txt:physical in 3592) [ClassicSimilarity], result of:
            0.066381365 = score(doc=3592,freq=1.0), product of:
              0.21268958 = queryWeight, product of:
                3.0906472 = boost
                5.707053 = idf(docFreq=385, maxDocs=42740)
                0.0120582655 = queryNorm
              0.31210446 = fieldWeight in 3592, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.707053 = idf(docFreq=385, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.12889335 = weight(abstract_txt:task in 3592) [ClassicSimilarity], result of:
            0.12889335 = score(doc=3592,freq=4.0), product of:
              0.23871487 = queryWeight, product of:
                4.01016 = boost
                4.936657 = idf(docFreq=833, maxDocs=42740)
                0.0120582655 = queryNorm
              0.53994685 = fieldWeight in 3592, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.936657 = idf(docFreq=833, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.15163536 = weight(abstract_txt:behaviors in 3592) [ClassicSimilarity], result of:
            0.15163536 = score(doc=3592,freq=2.0), product of:
              0.3154102 = queryWeight, product of:
                4.207937 = boost
                6.216153 = idf(docFreq=231, maxDocs=42740)
                0.0120582655 = queryNorm
              0.48075604 = fieldWeight in 3592, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.216153 = idf(docFreq=231, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.29391742 = weight(abstract_txt:children's in 3592) [ClassicSimilarity], result of:
            0.29391742 = score(doc=3592,freq=3.0), product of:
              0.42834648 = queryWeight, product of:
                4.903757 = boost
                7.24405 = idf(docFreq=82, maxDocs=42740)
                0.0120582655 = queryNorm
              0.6861675 = fieldWeight in 3592, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.24405 = idf(docFreq=82, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
          0.52459544 = weight(abstract_txt:yahooligans in 3592) [ClassicSimilarity], result of:
            0.52459544 = score(doc=3592,freq=3.0), product of:
              0.58509266 = queryWeight, product of:
                5.1261187 = boost
                9.465666 = idf(docFreq=8, maxDocs=42740)
                0.0120582655 = queryNorm
              0.89660233 = fieldWeight in 3592, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                9.465666 = idf(docFreq=8, maxDocs=42740)
                0.0546875 = fieldNorm(doc=3592)
        0.64 = coord(16/25)
    
  3. Bilal, D.: Children's use of the Yahooligans! Web search engine : III. Cognitive and physical behaviors on fully self-generated search tasks (2002) 0.68
    0.6821379 = sum of:
      0.6821379 = product of:
        1.3118037 = sum of:
          0.048265554 = weight(abstract_txt:grade in 229) [ClassicSimilarity], result of:
            0.048265554 = score(doc=229,freq=1.0), product of:
              0.09911186 = queryWeight, product of:
                1.0548948 = boost
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0120582655 = queryNorm
              0.4869806 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.08367823 = weight(abstract_txt:seventh in 229) [ClassicSimilarity], result of:
            0.08367823 = score(doc=229,freq=1.0), product of:
              0.14303504 = queryWeight, product of:
                1.2672653 = boost
                9.360306 = idf(docFreq=9, maxDocs=42740)
                0.0120582655 = queryNorm
              0.5850191 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.360306 = idf(docFreq=9, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.08980653 = weight(abstract_txt:backtracking in 229) [ClassicSimilarity], result of:
            0.08980653 = score(doc=229,freq=1.0), product of:
              0.14993604 = queryWeight, product of:
                1.297476 = boost
                9.583449 = idf(docFreq=7, maxDocs=42740)
                0.0120582655 = queryNorm
              0.5989656 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.583449 = idf(docFreq=7, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.018100685 = weight(abstract_txt:study in 229) [ClassicSimilarity], result of:
            0.018100685 = score(doc=229,freq=2.0), product of:
              0.059001245 = queryWeight, product of:
                1.4097352 = boost
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0120582655 = queryNorm
              0.30678478 = fieldWeight in 229, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.038035884 = weight(abstract_txt:success in 229) [ClassicSimilarity], result of:
            0.038035884 = score(doc=229,freq=1.0), product of:
              0.10653847 = queryWeight, product of:
                1.5467302 = boost
                5.712248 = idf(docFreq=383, maxDocs=42740)
                0.0120582655 = queryNorm
              0.3570155 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.712248 = idf(docFreq=383, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.11284123 = weight(abstract_txt:children in 229) [ClassicSimilarity], result of:
            0.11284123 = score(doc=229,freq=3.0), product of:
              0.15251607 = queryWeight, product of:
                1.850628 = boost
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.0120582655 = queryNorm
              0.7398646 = fieldWeight in 229, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.088472776 = weight(abstract_txt:moves in 229) [ClassicSimilarity], result of:
            0.088472776 = score(doc=229,freq=1.0), product of:
              0.18703255 = queryWeight, product of:
                2.049368 = boost
                7.568546 = idf(docFreq=59, maxDocs=42740)
                0.0120582655 = queryNorm
              0.4730341 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.568546 = idf(docFreq=59, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.028743295 = weight(abstract_txt:research in 229) [ClassicSimilarity], result of:
            0.028743295 = score(doc=229,freq=2.0), product of:
              0.101180986 = queryWeight, product of:
                2.610787 = boost
                3.2139761 = idf(docFreq=4669, maxDocs=42740)
                0.0120582655 = queryNorm
              0.28407803 = fieldWeight in 229, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.2139761 = idf(docFreq=4669, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.060345322 = weight(abstract_txt:cognitive in 229) [ClassicSimilarity], result of:
            0.060345322 = score(doc=229,freq=1.0), product of:
              0.1825926 = queryWeight, product of:
                2.8636367 = boost
                5.2878656 = idf(docFreq=586, maxDocs=42740)
                0.0120582655 = queryNorm
              0.3304916 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2878656 = idf(docFreq=586, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.07586442 = weight(abstract_txt:physical in 229) [ClassicSimilarity], result of:
            0.07586442 = score(doc=229,freq=1.0), product of:
              0.21268958 = queryWeight, product of:
                3.0906472 = boost
                5.707053 = idf(docFreq=385, maxDocs=42740)
                0.0120582655 = queryNorm
              0.35669082 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.707053 = idf(docFreq=385, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.12757133 = weight(abstract_txt:task in 229) [ClassicSimilarity], result of:
            0.12757133 = score(doc=229,freq=3.0), product of:
              0.23871487 = queryWeight, product of:
                4.01016 = boost
                4.936657 = idf(docFreq=833, maxDocs=42740)
                0.0120582655 = queryNorm
              0.5344088 = fieldWeight in 229, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.936657 = idf(docFreq=833, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.19393522 = weight(abstract_txt:children's in 229) [ClassicSimilarity], result of:
            0.19393522 = score(doc=229,freq=1.0), product of:
              0.42834648 = queryWeight, product of:
                4.903757 = boost
                7.24405 = idf(docFreq=82, maxDocs=42740)
                0.0120582655 = queryNorm
              0.45275313 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.24405 = idf(docFreq=82, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
          0.34614322 = weight(abstract_txt:yahooligans in 229) [ClassicSimilarity], result of:
            0.34614322 = score(doc=229,freq=1.0), product of:
              0.58509266 = queryWeight, product of:
                5.1261187 = boost
                9.465666 = idf(docFreq=8, maxDocs=42740)
                0.0120582655 = queryNorm
              0.5916041 = fieldWeight in 229, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.465666 = idf(docFreq=8, maxDocs=42740)
                0.0625 = fieldNorm(doc=229)
        0.52 = coord(13/25)
    
  4. Bilal, D.: Web search engines for children : a comparative study and performance evaluation of Yahooligans!, AskJeeves for Kids, and Super Snooper (1999) 0.51
    0.5110044 = sum of:
      0.5110044 = product of:
        1.2775109 = sum of:
          0.04207784 = weight(abstract_txt:failed in 545) [ClassicSimilarity], result of:
            0.04207784 = score(doc=545,freq=1.0), product of:
              0.09044885 = queryWeight, product of:
                1.0077385 = boost
                7.4433827 = idf(docFreq=67, maxDocs=42740)
                0.0120582655 = queryNorm
              0.46521142 = fieldWeight in 545, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.4433827 = idf(docFreq=67, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.048265554 = weight(abstract_txt:grade in 545) [ClassicSimilarity], result of:
            0.048265554 = score(doc=545,freq=1.0), product of:
              0.09911186 = queryWeight, product of:
                1.0548948 = boost
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0120582655 = queryNorm
              0.4869806 = fieldWeight in 545, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.012546789 = weight(abstract_txt:design in 545) [ClassicSimilarity], result of:
            0.012546789 = score(doc=545,freq=1.0), product of:
              0.05086267 = queryWeight, product of:
                1.0687126 = boost
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.0120582655 = queryNorm
              0.24667971 = fieldWeight in 545, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9468753 = idf(docFreq=2243, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.034873087 = weight(abstract_txt:students in 545) [ClassicSimilarity], result of:
            0.034873087 = score(doc=545,freq=2.0), product of:
              0.07980456 = queryWeight, product of:
                1.3386751 = boost
                4.943877 = idf(docFreq=827, maxDocs=42740)
                0.0120582655 = queryNorm
              0.43698114 = fieldWeight in 545, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.943877 = idf(docFreq=827, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.012799117 = weight(abstract_txt:study in 545) [ClassicSimilarity], result of:
            0.012799117 = score(doc=545,freq=1.0), product of:
              0.059001245 = queryWeight, product of:
                1.4097352 = boost
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0120582655 = queryNorm
              0.2169296 = fieldWeight in 545, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.02032458 = weight(abstract_txt:research in 545) [ClassicSimilarity], result of:
            0.02032458 = score(doc=545,freq=1.0), product of:
              0.101180986 = queryWeight, product of:
                2.610787 = boost
                3.2139761 = idf(docFreq=4669, maxDocs=42740)
                0.0120582655 = queryNorm
              0.20087351 = fieldWeight in 545, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2139761 = idf(docFreq=4669, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.060345322 = weight(abstract_txt:cognitive in 545) [ClassicSimilarity], result of:
            0.060345322 = score(doc=545,freq=1.0), product of:
              0.1825926 = queryWeight, product of:
                2.8636367 = boost
                5.2878656 = idf(docFreq=586, maxDocs=42740)
                0.0120582655 = queryNorm
              0.3304916 = fieldWeight in 545, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2878656 = idf(docFreq=586, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.07586442 = weight(abstract_txt:physical in 545) [ClassicSimilarity], result of:
            0.07586442 = score(doc=545,freq=1.0), product of:
              0.21268958 = queryWeight, product of:
                3.0906472 = boost
                5.707053 = idf(docFreq=385, maxDocs=42740)
                0.0120582655 = queryNorm
              0.35669082 = fieldWeight in 545, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.707053 = idf(docFreq=385, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.12253988 = weight(abstract_txt:behaviors in 545) [ClassicSimilarity], result of:
            0.12253988 = score(doc=545,freq=1.0), product of:
              0.3154102 = queryWeight, product of:
                4.207937 = boost
                6.216153 = idf(docFreq=231, maxDocs=42740)
                0.0120582655 = queryNorm
              0.38850957 = fieldWeight in 545, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.216153 = idf(docFreq=231, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
          0.84787434 = weight(abstract_txt:yahooligans in 545) [ClassicSimilarity], result of:
            0.84787434 = score(doc=545,freq=6.0), product of:
              0.58509266 = queryWeight, product of:
                5.1261187 = boost
                9.465666 = idf(docFreq=8, maxDocs=42740)
                0.0120582655 = queryNorm
              1.4491283 = fieldWeight in 545, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                9.465666 = idf(docFreq=8, maxDocs=42740)
                0.0625 = fieldNorm(doc=545)
        0.4 = coord(10/25)
    
  5. Bilal, D.; Gwizdka, J.: Children's query types and reformulations in Google search (2018) 0.33
    0.3331558 = sum of:
      0.3331558 = product of:
        1.041112 = sum of:
          0.011036629 = weight(abstract_txt:they in 1048) [ClassicSimilarity], result of:
            0.011036629 = score(doc=1048,freq=1.0), product of:
              0.04669479 = queryWeight, product of:
                1.0239896 = boost
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.0120582655 = queryNorm
              0.23635677 = fieldWeight in 1048, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7817082 = idf(docFreq=2646, maxDocs=42740)
                0.0625 = fieldNorm(doc=1048)
          0.048265554 = weight(abstract_txt:grade in 1048) [ClassicSimilarity], result of:
            0.048265554 = score(doc=1048,freq=1.0), product of:
              0.09911186 = queryWeight, product of:
                1.0548948 = boost
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0120582655 = queryNorm
              0.4869806 = fieldWeight in 1048, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7916894 = idf(docFreq=47, maxDocs=42740)
                0.0625 = fieldNorm(doc=1048)
          0.012799117 = weight(abstract_txt:study in 1048) [ClassicSimilarity], result of:
            0.012799117 = score(doc=1048,freq=1.0), product of:
              0.059001245 = queryWeight, product of:
                1.4097352 = boost
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0120582655 = queryNorm
              0.2169296 = fieldWeight in 1048, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4708736 = idf(docFreq=3611, maxDocs=42740)
                0.0625 = fieldNorm(doc=1048)
          0.15958162 = weight(abstract_txt:children in 1048) [ClassicSimilarity], result of:
            0.15958162 = score(doc=1048,freq=6.0), product of:
              0.15251607 = queryWeight, product of:
                1.850628 = boost
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.0120582655 = queryNorm
              1.0463266 = fieldWeight in 1048, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                6.8345766 = idf(docFreq=124, maxDocs=42740)
                0.0625 = fieldNorm(doc=1048)
          0.02032458 = weight(abstract_txt:research in 1048) [ClassicSimilarity], result of:
            0.02032458 = score(doc=1048,freq=1.0), product of:
              0.101180986 = queryWeight, product of:
                2.610787 = boost
                3.2139761 = idf(docFreq=4669, maxDocs=42740)
                0.0120582655 = queryNorm
              0.20087351 = fieldWeight in 1048, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2139761 = idf(docFreq=4669, maxDocs=42740)
                0.0625 = fieldNorm(doc=1048)
          0.23291232 = weight(abstract_txt:task in 1048) [ClassicSimilarity], result of:
            0.23291232 = score(doc=1048,freq=10.0), product of:
              0.23871487 = queryWeight, product of:
                4.01016 = boost
                4.936657 = idf(docFreq=833, maxDocs=42740)
                0.0120582655 = queryNorm
              0.9756925 = fieldWeight in 1048, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                4.936657 = idf(docFreq=833, maxDocs=42740)
                0.0625 = fieldNorm(doc=1048)
          0.12253988 = weight(abstract_txt:behaviors in 1048) [ClassicSimilarity], result of:
            0.12253988 = score(doc=1048,freq=1.0), product of:
              0.3154102 = queryWeight, product of:
                4.207937 = boost
                6.216153 = idf(docFreq=231, maxDocs=42740)
                0.0120582655 = queryNorm
              0.38850957 = fieldWeight in 1048, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.216153 = idf(docFreq=231, maxDocs=42740)
                0.0625 = fieldNorm(doc=1048)
          0.43365234 = weight(abstract_txt:children's in 1048) [ClassicSimilarity], result of:
            0.43365234 = score(doc=1048,freq=5.0), product of:
              0.42834648 = queryWeight, product of:
                4.903757 = boost
                7.24405 = idf(docFreq=82, maxDocs=42740)
                0.0120582655 = queryNorm
              1.0123868 = fieldWeight in 1048, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                7.24405 = idf(docFreq=82, maxDocs=42740)
                0.0625 = fieldNorm(doc=1048)
        0.32 = coord(8/25)