Document (#44282)

Author

Kreutz, C.K.
Wolz, M.
Knack, J.
Schenkel, R.

Title

SchenQL: in-depth analysis of a query language for bibliographic metadata

Source

International journal on digital libraries. 23(2022) no.5, S.113-132

Year

2022

Abstract

Information access to bibliographic metadata needs to be uncomplicated, as users may not benefit from complex and potentially richer data that may be difficult to obtain. Sophisticated research questions including complex aggregations could be answered with complex SQL queries. However, this comes with the cost of high complexity, which requires for a high level of expertise even for trained programmers. A domain-specific query language could provide a straightforward solution to this problem. Although less generic, it can support users not familiar with query construction in the formulation of complex information needs. In this paper, we present and evaluate SchenQL, a simple and applicable query language that is accompanied by a prototypical GUI. SchenQL focuses on querying bibliographic metadata using the vocabulary of domain experts. The easy-to-learn domain-specific query language is suitable for domain experts as well as casual users while still providing the possibility to answer complex information demands. Query construction and information exploration are supported by a prototypical GUI. We present an evaluation of the complete system: different variants for executing SchenQL queries are benchmarked; interviews with domain-experts and a bipartite quantitative user study demonstrate SchenQL's suitability and high level of users' acceptance.

Content

DOI: 10.1007/s00799-021-00317-8

Theme

Metadaten

Object

SchenQL

Similar documents (content)

1. Thelwall, M.; Binns, R.; Harries, G.; Page-Kennedy, T.; Price, L.; Wilkinson, D.: Custom interfaces for advanced queries in search engines (2001) 0.28

   0.27824843 = sum of:
     0.27824843 = product of:
       0.57968426 = sum of:
         0.035769336 = weight(abstract_txt:specific in 822) [ClassicSimilarity], result of:
           0.035769336 = score(doc=822,freq=2.0), product of:
             0.09398693 = queryWeight, product of:
               1.0747453 = boost
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.020310167 = queryNorm
             0.38057777 = fieldWeight in 822, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.038895093 = weight(abstract_txt:needs in 822) [ClassicSimilarity], result of:
           0.038895093 = score(doc=822,freq=2.0), product of:
             0.09938559 = queryWeight, product of:
               1.1051813 = boost
               4.4276814 = idf(docFreq=1441, maxDocs=44421)
               0.020310167 = queryNorm
             0.39135545 = fieldWeight in 822, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4276814 = idf(docFreq=1441, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.02877836 = weight(abstract_txt:level in 822) [ClassicSimilarity], result of:
           0.02877836 = score(doc=822,freq=1.0), product of:
             0.102434814 = queryWeight, product of:
               1.1220071 = boost
               4.4950905 = idf(docFreq=1347, maxDocs=44421)
               0.020310167 = queryNorm
             0.28094316 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4950905 = idf(docFreq=1347, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.034387823 = weight(abstract_txt:could in 822) [ClassicSimilarity], result of:
           0.034387823 = score(doc=822,freq=1.0), product of:
             0.115347095 = queryWeight, product of:
               1.1906254 = boost
               4.7699957 = idf(docFreq=1023, maxDocs=44421)
               0.020310167 = queryNorm
             0.29812473 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7699957 = idf(docFreq=1023, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.020054838 = weight(abstract_txt:information in 822) [ClassicSimilarity], result of:
           0.020054838 = score(doc=822,freq=5.0), product of:
             0.0593248 = queryWeight, product of:
               1.2075496 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.020310167 = queryNorm
             0.3380515 = fieldWeight in 822, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.009855697 = weight(abstract_txt:with in 822) [ClassicSimilarity], result of:
           0.009855697 = score(doc=822,freq=1.0), product of:
             0.06317401 = queryWeight, product of:
               1.246109 = boost
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.020310167 = queryNorm
             0.15600874 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.042069677 = weight(abstract_txt:queries in 822) [ClassicSimilarity], result of:
           0.042069677 = score(doc=822,freq=1.0), product of:
             0.13194197 = queryWeight, product of:
               1.2733955 = boost
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.020310167 = queryNorm
             0.31884983 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.05133303 = weight(abstract_txt:construction in 822) [ClassicSimilarity], result of:
           0.05133303 = score(doc=822,freq=1.0), product of:
             0.15066122 = queryWeight, product of:
               1.3607318 = boost
               5.4514923 = idf(docFreq=517, maxDocs=44421)
               0.020310167 = queryNorm
             0.34071827 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4514923 = idf(docFreq=517, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.028767172 = weight(abstract_txt:users in 822) [ClassicSimilarity], result of:
           0.028767172 = score(doc=822,freq=1.0), product of:
             0.12902632 = queryWeight, product of:
               1.7808444 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.020310167 = queryNorm
             0.22295584 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.08376458 = weight(abstract_txt:domain in 822) [ClassicSimilarity], result of:
           0.08376458 = score(doc=822,freq=1.0), product of:
             0.28341565 = queryWeight, product of:
               2.9508948 = boost
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.020310167 = queryNorm
             0.29555383 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.1038479 = weight(abstract_txt:complex in 822) [ClassicSimilarity], result of:
           0.1038479 = score(doc=822,freq=1.0), product of:
             0.32707602 = queryWeight, product of:
               3.1700506 = boost
               5.080062 = idf(docFreq=750, maxDocs=44421)
               0.020310167 = queryNorm
             0.31750387 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.080062 = idf(docFreq=750, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
         0.10216078 = weight(abstract_txt:query in 822) [ClassicSimilarity], result of:
           0.10216078 = score(doc=822,freq=1.0), product of:
             0.34379542 = queryWeight, product of:
               3.5602665 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.020310167 = queryNorm
             0.29715574 = fieldWeight in 822, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.0625 = fieldNorm(doc=822)
       0.48 = coord(12/25)
   

2. Li, W.-S.; Shim, J.: Facilitating complex Web queries through visual user interfaces and query relaxation (1998) 0.26

   0.25854927 = sum of:
     0.25854927 = product of:
       0.9233902 = sum of:
         0.015695393 = weight(abstract_txt:information in 4602) [ClassicSimilarity], result of:
           0.015695393 = score(doc=4602,freq=1.0), product of:
             0.0593248 = queryWeight, product of:
               1.2075496 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.020310167 = queryNorm
             0.26456714 = fieldWeight in 4602, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.109375 = fieldNorm(doc=4602)
         0.10411713 = weight(abstract_txt:queries in 4602) [ClassicSimilarity], result of:
           0.10411713 = score(doc=4602,freq=2.0), product of:
             0.13194197 = queryWeight, product of:
               1.2733955 = boost
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.020310167 = queryNorm
             0.78911304 = fieldWeight in 4602, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.109375 = fieldNorm(doc=4602)
         0.08719585 = weight(abstract_txt:users in 4602) [ClassicSimilarity], result of:
           0.08719585 = score(doc=4602,freq=3.0), product of:
             0.12902632 = queryWeight, product of:
               1.7808444 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.020310167 = queryNorm
             0.67579895 = fieldWeight in 4602, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.109375 = fieldNorm(doc=4602)
         0.096615 = weight(abstract_txt:metadata in 4602) [ClassicSimilarity], result of:
           0.096615 = score(doc=4602,freq=1.0), product of:
             0.18103878 = queryWeight, product of:
               1.8268516 = boost
               4.87927 = idf(docFreq=917, maxDocs=44421)
               0.020310167 = queryNorm
             0.5336702 = fieldWeight in 4602, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.87927 = idf(docFreq=917, maxDocs=44421)
               0.109375 = fieldNorm(doc=4602)
         0.08047026 = weight(abstract_txt:language in 4602) [ClassicSimilarity], result of:
           0.08047026 = score(doc=4602,freq=1.0), product of:
             0.17639181 = queryWeight, product of:
               2.0822172 = boost
               4.1709876 = idf(docFreq=1863, maxDocs=44421)
               0.020310167 = queryNorm
             0.45620176 = fieldWeight in 4602, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1709876 = idf(docFreq=1863, maxDocs=44421)
               0.109375 = fieldNorm(doc=4602)
         0.18173382 = weight(abstract_txt:complex in 4602) [ClassicSimilarity], result of:
           0.18173382 = score(doc=4602,freq=1.0), product of:
             0.32707602 = queryWeight, product of:
               3.1700506 = boost
               5.080062 = idf(docFreq=750, maxDocs=44421)
               0.020310167 = queryNorm
             0.55563176 = fieldWeight in 4602, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.080062 = idf(docFreq=750, maxDocs=44421)
               0.109375 = fieldNorm(doc=4602)
         0.35756272 = weight(abstract_txt:query in 4602) [ClassicSimilarity], result of:
           0.35756272 = score(doc=4602,freq=4.0), product of:
             0.34379542 = queryWeight, product of:
               3.5602665 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.020310167 = queryNorm
             1.040045 = fieldWeight in 4602, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.109375 = fieldNorm(doc=4602)
       0.28 = coord(7/25)
   

3. Jones, S.: Query modelling for IR interface design (1995) 0.24

   0.23922448 = sum of:
     0.23922448 = product of:
       0.5980612 = sum of:
         0.041254476 = weight(abstract_txt:needs in 5874) [ClassicSimilarity], result of:
           0.041254476 = score(doc=5874,freq=1.0), product of:
             0.09938559 = queryWeight, product of:
               1.1051813 = boost
               4.4276814 = idf(docFreq=1441, maxDocs=44421)
               0.020310167 = queryNorm
             0.41509515 = fieldWeight in 5874, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4276814 = idf(docFreq=1441, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.061048124 = weight(abstract_txt:level in 5874) [ClassicSimilarity], result of:
           0.061048124 = score(doc=5874,freq=2.0), product of:
             0.102434814 = queryWeight, product of:
               1.1220071 = boost
               4.4950905 = idf(docFreq=1347, maxDocs=44421)
               0.020310167 = queryNorm
             0.59597045 = fieldWeight in 5874, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4950905 = idf(docFreq=1347, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.051581733 = weight(abstract_txt:could in 5874) [ClassicSimilarity], result of:
           0.051581733 = score(doc=5874,freq=1.0), product of:
             0.115347095 = queryWeight, product of:
               1.1906254 = boost
               4.7699957 = idf(docFreq=1023, maxDocs=44421)
               0.020310167 = queryNorm
             0.4471871 = fieldWeight in 5874, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7699957 = idf(docFreq=1023, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.013453194 = weight(abstract_txt:information in 5874) [ClassicSimilarity], result of:
           0.013453194 = score(doc=5874,freq=1.0), product of:
             0.0593248 = queryWeight, product of:
               1.2075496 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.020310167 = queryNorm
             0.22677183 = fieldWeight in 5874, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.02090709 = weight(abstract_txt:with in 5874) [ClassicSimilarity], result of:
           0.02090709 = score(doc=5874,freq=2.0), product of:
             0.06317401 = queryWeight, product of:
               1.246109 = boost
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.020310167 = queryNorm
             0.33094448 = fieldWeight in 5874, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.06310452 = weight(abstract_txt:queries in 5874) [ClassicSimilarity], result of:
           0.06310452 = score(doc=5874,freq=1.0), product of:
             0.13194197 = queryWeight, product of:
               1.2733955 = boost
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.020310167 = queryNorm
             0.47827476 = fieldWeight in 5874, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.04315076 = weight(abstract_txt:users in 5874) [ClassicSimilarity], result of:
           0.04315076 = score(doc=5874,freq=1.0), product of:
             0.12902632 = queryWeight, product of:
               1.7808444 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.020310167 = queryNorm
             0.33443376 = fieldWeight in 5874, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.08134565 = weight(abstract_txt:high in 5874) [ClassicSimilarity], result of:
           0.08134565 = score(doc=5874,freq=1.0), product of:
             0.17889409 = queryWeight, product of:
               1.8159984 = boost
               4.8502827 = idf(docFreq=944, maxDocs=44421)
               0.020310167 = queryNorm
             0.454714 = fieldWeight in 5874, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8502827 = idf(docFreq=944, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.0689745 = weight(abstract_txt:language in 5874) [ClassicSimilarity], result of:
           0.0689745 = score(doc=5874,freq=1.0), product of:
             0.17639181 = queryWeight, product of:
               2.0822172 = boost
               4.1709876 = idf(docFreq=1863, maxDocs=44421)
               0.020310167 = queryNorm
             0.39103007 = fieldWeight in 5874, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1709876 = idf(docFreq=1863, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
         0.15324117 = weight(abstract_txt:query in 5874) [ClassicSimilarity], result of:
           0.15324117 = score(doc=5874,freq=1.0), product of:
             0.34379542 = queryWeight, product of:
               3.5602665 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.020310167 = queryNorm
             0.4457336 = fieldWeight in 5874, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.09375 = fieldNorm(doc=5874)
       0.4 = coord(10/25)
   

4. Haslhofer, B.: ¬A Web-based mapping technique for establishing metadata interoperability (2008) 0.23

   0.22762544 = sum of:
     0.22762544 = product of:
       0.5690636 = sum of:
         0.015807962 = weight(abstract_txt:specific in 160) [ClassicSimilarity], result of:
           0.015807962 = score(doc=160,freq=1.0), product of:
             0.09398693 = queryWeight, product of:
               1.0747453 = boost
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.020310167 = queryNorm
             0.1681932 = fieldWeight in 160, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.028151952 = weight(abstract_txt:present in 160) [ClassicSimilarity], result of:
           0.028151952 = score(doc=160,freq=3.0), product of:
             0.095744856 = queryWeight, product of:
               1.0847497 = boost
               4.3458266 = idf(docFreq=1564, maxDocs=44421)
               0.020310167 = queryNorm
             0.29403096 = fieldWeight in 160, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.3458266 = idf(docFreq=1564, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.025436716 = weight(abstract_txt:level in 160) [ClassicSimilarity], result of:
           0.025436716 = score(doc=160,freq=2.0), product of:
             0.102434814 = queryWeight, product of:
               1.1220071 = boost
               4.4950905 = idf(docFreq=1347, maxDocs=44421)
               0.020310167 = queryNorm
             0.24832101 = fieldWeight in 160, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4950905 = idf(docFreq=1347, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.00792737 = weight(abstract_txt:information in 160) [ClassicSimilarity], result of:
           0.00792737 = score(doc=160,freq=2.0), product of:
             0.0593248 = queryWeight, product of:
               1.2075496 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.020310167 = queryNorm
             0.13362658 = fieldWeight in 160, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.026293548 = weight(abstract_txt:queries in 160) [ClassicSimilarity], result of:
           0.026293548 = score(doc=160,freq=1.0), product of:
             0.13194197 = queryWeight, product of:
               1.2733955 = boost
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.020310167 = queryNorm
             0.19928114 = fieldWeight in 160, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.14639382 = weight(abstract_txt:metadata in 160) [ClassicSimilarity], result of:
           0.14639382 = score(doc=160,freq=18.0), product of:
             0.18103878 = queryWeight, product of:
               1.8268516 = boost
               4.87927 = idf(docFreq=917, maxDocs=44421)
               0.020310167 = queryNorm
             0.8086324 = fieldWeight in 160, product of:
               4.2426405 = tf(freq=18.0), with freq of:
                 18.0 = termFreq=18.0
               4.87927 = idf(docFreq=917, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.04977806 = weight(abstract_txt:language in 160) [ClassicSimilarity], result of:
           0.04977806 = score(doc=160,freq=3.0), product of:
             0.17639181 = queryWeight, product of:
               2.0822172 = boost
               4.1709876 = idf(docFreq=1863, maxDocs=44421)
               0.020310167 = queryNorm
             0.28220165 = fieldWeight in 160, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.1709876 = idf(docFreq=1863, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.08829813 = weight(abstract_txt:experts in 160) [ClassicSimilarity], result of:
           0.08829813 = score(doc=160,freq=2.0), product of:
             0.26882622 = queryWeight, product of:
               2.226144 = boost
               5.9457254 = idf(docFreq=315, maxDocs=44421)
               0.020310167 = queryNorm
             0.328458 = fieldWeight in 160, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.9457254 = idf(docFreq=315, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.09067782 = weight(abstract_txt:domain in 160) [ClassicSimilarity], result of:
           0.09067782 = score(doc=160,freq=3.0), product of:
             0.28341565 = queryWeight, product of:
               2.9508948 = boost
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.020310167 = queryNorm
             0.3199464 = fieldWeight in 160, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
         0.09029822 = weight(abstract_txt:query in 160) [ClassicSimilarity], result of:
           0.09029822 = score(doc=160,freq=2.0), product of:
             0.34379542 = queryWeight, product of:
               3.5602665 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.020310167 = queryNorm
             0.26265103 = fieldWeight in 160, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.0390625 = fieldNorm(doc=160)
       0.4 = coord(10/25)
   

5. Marchionini, G.; Xia, L.; Dwiggins, S.: Efforts of search and subject expertise on information seeking in a hypertext environment (1990) 0.22

   0.21917728 = sum of:
     0.21917728 = product of:
       0.782776 = sum of:
         0.013453194 = weight(abstract_txt:information in 4872) [ClassicSimilarity], result of:
           0.013453194 = score(doc=4872,freq=1.0), product of:
             0.0593248 = queryWeight, product of:
               1.2075496 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.020310167 = queryNorm
             0.22677183 = fieldWeight in 4872, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.09375 = fieldNorm(doc=4872)
         0.014783546 = weight(abstract_txt:with in 4872) [ClassicSimilarity], result of:
           0.014783546 = score(doc=4872,freq=1.0), product of:
             0.06317401 = queryWeight, product of:
               1.246109 = boost
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.020310167 = queryNorm
             0.23401311 = fieldWeight in 4872, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4961398 = idf(docFreq=9949, maxDocs=44421)
               0.09375 = fieldNorm(doc=4872)
         0.06310452 = weight(abstract_txt:queries in 4872) [ClassicSimilarity], result of:
           0.06310452 = score(doc=4872,freq=1.0), product of:
             0.13194197 = queryWeight, product of:
               1.2733955 = boost
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.020310167 = queryNorm
             0.47827476 = fieldWeight in 4872, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1015973 = idf(docFreq=734, maxDocs=44421)
               0.09375 = fieldNorm(doc=4872)
         0.06102439 = weight(abstract_txt:users in 4872) [ClassicSimilarity], result of:
           0.06102439 = score(doc=4872,freq=2.0), product of:
             0.12902632 = queryWeight, product of:
               1.7808444 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.020310167 = queryNorm
             0.47296077 = fieldWeight in 4872, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.09375 = fieldNorm(doc=4872)
         0.25954244 = weight(abstract_txt:experts in 4872) [ClassicSimilarity], result of:
           0.25954244 = score(doc=4872,freq=3.0), product of:
             0.26882622 = queryWeight, product of:
               2.226144 = boost
               5.9457254 = idf(docFreq=315, maxDocs=44421)
               0.020310167 = queryNorm
             0.96546555 = fieldWeight in 4872, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.9457254 = idf(docFreq=315, maxDocs=44421)
               0.09375 = fieldNorm(doc=4872)
         0.21762677 = weight(abstract_txt:domain in 4872) [ClassicSimilarity], result of:
           0.21762677 = score(doc=4872,freq=3.0), product of:
             0.28341565 = queryWeight, product of:
               2.9508948 = boost
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.020310167 = queryNorm
             0.7678714 = fieldWeight in 4872, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.09375 = fieldNorm(doc=4872)
         0.15324117 = weight(abstract_txt:query in 4872) [ClassicSimilarity], result of:
           0.15324117 = score(doc=4872,freq=1.0), product of:
             0.34379542 = queryWeight, product of:
               3.5602665 = boost
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.020310167 = queryNorm
             0.4457336 = fieldWeight in 4872, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.754492 = idf(docFreq=1039, maxDocs=44421)
               0.09375 = fieldNorm(doc=4872)
       0.28 = coord(7/25)