Document (#23585)

Author

Cooper, M.D.

Title

Usage patterns of a Web-based library catalog

Source

Journal of the American Society for Information Science and technology. 52(2001) no.2, S.137-148

Year

2001

Abstract

This article reports on a model and patterns of use of a library catalog that can be accessed through the Internet. Three categories of users are identified. individuals who perform a search of the catalog, tourists who look only at opening pages of the library catalog's site, and Web spiders that come to the site to obtain pages for indexing the Web. A number of types of use activities are also identified, and can be grouped with the presearch phase (which takes place before any searching begins): the search phase, the display phase (in which users display the results of their search), and phases in which users make errors, ask the system for help or assistance, and take other actions. An empirical investigation of patterns of use of a university Web-based library catalog was conducted for 479 days. During that period, the characteristics of about 2.5 million sessions were recorded and analyzed, and usage trends were identified. Of the total, 62% of the sessions were for users who performed a search, 27% were from spiders, and 11% were for tourists. During the study period, the average search session lasted about 5 minutes when the study began and had increased to about 10 minutes 16 months later. An average search consisted of about 1.5 presearch actions lasting about 25 seconds, about 5.3 display actions, and 2.5 searches per session. The latter two categories are in the range of 35-37 seconds per session each. There were major differences in usage (number of searches, search time, number of display actions, and display time), depending upon the database accessed

Theme

Internet
OPAC
Benutzerstudien

Object

Melvyl

Location

USA
Berkeley

Similar documents (author)

1. Cooper, W.S.: Indexing documents by Gedanken experimentation (1978) 5.13

   5.1281 = sum of:
     5.1281 = weight(author_txt:cooper in 411) [ClassicSimilarity], result of:
       5.1281 = fieldWeight in 411, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.20496 = idf(docFreq=32, maxDocs=44421)
         0.625 = fieldNorm(doc=411)
   

2. Cooper, W.S.: ¬A definition for relevance in information retrieval (1971) 5.13

   5.1281 = sum of:
     5.1281 = weight(author_txt:cooper in 841) [ClassicSimilarity], result of:
       5.1281 = fieldWeight in 841, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.20496 = idf(docFreq=32, maxDocs=44421)
         0.625 = fieldNorm(doc=841)
   

3. Cooper, W.S.: Is interindexer consistency a hobgoblin? (1969) 5.13

   5.1281 = sum of:
     5.1281 = weight(author_txt:cooper in 2272) [ClassicSimilarity], result of:
       5.1281 = fieldWeight in 2272, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.20496 = idf(docFreq=32, maxDocs=44421)
         0.625 = fieldNorm(doc=2272)
   

4. Cooper, W.S.: Getting beyond Boole (1988) 5.13

   5.1281 = sum of:
     5.1281 = weight(author_txt:cooper in 2294) [ClassicSimilarity], result of:
       5.1281 = fieldWeight in 2294, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.20496 = idf(docFreq=32, maxDocs=44421)
         0.625 = fieldNorm(doc=2294)
   

5. Cooper, W.S.: Expected search length : a single measure of retrieval effectiveness based on the weak ordering action of retrieval systems (1968) 5.13

   5.1281 = sum of:
     5.1281 = weight(author_txt:cooper in 5903) [ClassicSimilarity], result of:
       5.1281 = fieldWeight in 5903, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.20496 = idf(docFreq=32, maxDocs=44421)
         0.625 = fieldNorm(doc=5903)
   

Similar documents (content)

1. Chen, H.-M.; Cooper, M.D.: Stochastic modeling of usage patterns in a Web-based information system (2002) 0.28

   0.2829428 = sum of:
     0.2829428 = product of:
       0.707357 = sum of:
         0.028725594 = weight(abstract_txt:pages in 1577) [ClassicSimilarity], result of:
           0.028725594 = score(doc=1577,freq=1.0), product of:
             0.10932068 = queryWeight, product of:
               5.6056433 = idf(docFreq=443, maxDocs=44421)
               0.019501897 = queryNorm
             0.2627645 = fieldWeight in 1577, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6056433 = idf(docFreq=443, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.010576434 = weight(abstract_txt:library in 1577) [ClassicSimilarity], result of:
           0.010576434 = score(doc=1577,freq=1.0), product of:
             0.070755325 = queryWeight, product of:
               1.137741 = boost
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.019501897 = queryNorm
             0.14947899 = fieldWeight in 1577, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.08485854 = weight(abstract_txt:sessions in 1577) [ClassicSimilarity], result of:
           0.08485854 = score(doc=1577,freq=3.0), product of:
             0.15605567 = queryWeight, product of:
               1.1947819 = boost
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.019501897 = queryNorm
             0.5437709 = fieldWeight in 1577, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.014806047 = weight(abstract_txt:users in 1577) [ClassicSimilarity], result of:
           0.014806047 = score(doc=1577,freq=1.0), product of:
             0.088543974 = queryWeight, product of:
               1.2727507 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.019501897 = queryNorm
             0.16721688 = fieldWeight in 1577, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.06196012 = weight(abstract_txt:patterns in 1577) [ClassicSimilarity], result of:
           0.06196012 = score(doc=1577,freq=3.0), product of:
             0.14485087 = queryWeight, product of:
               1.409792 = boost
               5.2685275 = idf(docFreq=621, maxDocs=44421)
               0.019501897 = queryNorm
             0.42775112 = fieldWeight in 1577, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.2685275 = idf(docFreq=621, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.107232 = weight(abstract_txt:usage in 1577) [ClassicSimilarity], result of:
           0.107232 = score(doc=1577,freq=6.0), product of:
             0.16572419 = queryWeight, product of:
               1.5079516 = boost
               5.6353593 = idf(docFreq=430, maxDocs=44421)
               0.019501897 = queryNorm
             0.647051 = fieldWeight in 1577, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.6353593 = idf(docFreq=430, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.052506562 = weight(abstract_txt:catalog in 1577) [ClassicSimilarity], result of:
           0.052506562 = score(doc=1577,freq=1.0), product of:
             0.205909 = queryWeight, product of:
               1.9408926 = boost
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.019501897 = queryNorm
             0.25499886 = fieldWeight in 1577, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.04180031 = weight(abstract_txt:were in 1577) [ClassicSimilarity], result of:
           0.04180031 = score(doc=1577,freq=3.0), product of:
             0.1403813 = queryWeight, product of:
               1.9627461 = boost
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.019501897 = queryNorm
             0.29776263 = fieldWeight in 1577, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.07371036 = weight(abstract_txt:search in 1577) [ClassicSimilarity], result of:
           0.07371036 = score(doc=1577,freq=7.0), product of:
             0.16262925 = queryWeight, product of:
               2.2818244 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.019501897 = queryNorm
             0.45324174 = fieldWeight in 1577, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
         0.23118103 = weight(abstract_txt:display in 1577) [ClassicSimilarity], result of:
           0.23118103 = score(doc=1577,freq=7.0), product of:
             0.31148592 = queryWeight, product of:
               2.6689353 = boost
               5.98444 = idf(docFreq=303, maxDocs=44421)
               0.019501897 = queryNorm
             0.74218774 = fieldWeight in 1577, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.98444 = idf(docFreq=303, maxDocs=44421)
               0.046875 = fieldNorm(doc=1577)
       0.4 = coord(10/25)
   

2. Cooper, M.D.; Chen, H.-M.: Predicting the relevance of a library catalog search (2001) 0.26

   0.2553676 = sum of:
     0.2553676 = product of:
       0.7093544 = sum of:
         0.028548595 = weight(abstract_txt:number in 519) [ClassicSimilarity], result of:
           0.028548595 = score(doc=519,freq=2.0), product of:
             0.08925557 = queryWeight, product of:
               1.1066548 = boost
               4.1356745 = idf(docFreq=1930, maxDocs=44421)
               0.019501897 = queryNorm
             0.31985223 = fieldWeight in 519, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.1356745 = idf(docFreq=1930, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
         0.012339173 = weight(abstract_txt:library in 519) [ClassicSimilarity], result of:
           0.012339173 = score(doc=519,freq=1.0), product of:
             0.070755325 = queryWeight, product of:
               1.137741 = boost
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.019501897 = queryNorm
             0.17439215 = fieldWeight in 519, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
         0.15122749 = weight(abstract_txt:sessions in 519) [ClassicSimilarity], result of:
           0.15122749 = score(doc=519,freq=7.0), product of:
             0.15605567 = queryWeight, product of:
               1.1947819 = boost
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.019501897 = queryNorm
             0.96906114 = fieldWeight in 519, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
         0.19774386 = weight(abstract_txt:session in 519) [ClassicSimilarity], result of:
           0.19774386 = score(doc=519,freq=5.0), product of:
             0.23896493 = queryWeight, product of:
               1.8107628 = boost
               6.7669935 = idf(docFreq=138, maxDocs=44421)
               0.019501897 = queryNorm
             0.8275016 = fieldWeight in 519, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               6.7669935 = idf(docFreq=138, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
         0.0866314 = weight(abstract_txt:catalog in 519) [ClassicSimilarity], result of:
           0.0866314 = score(doc=519,freq=2.0), product of:
             0.205909 = queryWeight, product of:
               1.9408926 = boost
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.019501897 = queryNorm
             0.42072666 = fieldWeight in 519, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
         0.056311317 = weight(abstract_txt:were in 519) [ClassicSimilarity], result of:
           0.056311317 = score(doc=519,freq=4.0), product of:
             0.1403813 = queryWeight, product of:
               1.9627461 = boost
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.019501897 = queryNorm
             0.40113115 = fieldWeight in 519, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
         0.03426924 = weight(abstract_txt:about in 519) [ClassicSimilarity], result of:
           0.03426924 = score(doc=519,freq=1.0), product of:
             0.16003016 = queryWeight, product of:
               2.0956097 = boost
               3.9157467 = idf(docFreq=2405, maxDocs=44421)
               0.019501897 = queryNorm
             0.2141424 = fieldWeight in 519, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9157467 = idf(docFreq=2405, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
         0.032503217 = weight(abstract_txt:search in 519) [ClassicSimilarity], result of:
           0.032503217 = score(doc=519,freq=1.0), product of:
             0.16262925 = queryWeight, product of:
               2.2818244 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.019501897 = queryNorm
             0.19986083 = fieldWeight in 519, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
         0.10978016 = weight(abstract_txt:actions in 519) [ClassicSimilarity], result of:
           0.10978016 = score(doc=519,freq=1.0), product of:
             0.3037976 = queryWeight, product of:
               2.3575234 = boost
               6.6077175 = idf(docFreq=162, maxDocs=44421)
               0.019501897 = queryNorm
             0.36135954 = fieldWeight in 519, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6077175 = idf(docFreq=162, maxDocs=44421)
               0.0546875 = fieldNorm(doc=519)
       0.36 = coord(9/25)
   

3. Iyengar, S.S.: Visual based retrieval systems and Web mining (2001) 0.26

   0.2553676 = sum of:
     0.2553676 = product of:
       0.7093544 = sum of:
         0.028548595 = weight(abstract_txt:number in 520) [ClassicSimilarity], result of:
           0.028548595 = score(doc=520,freq=2.0), product of:
             0.08925557 = queryWeight, product of:
               1.1066548 = boost
               4.1356745 = idf(docFreq=1930, maxDocs=44421)
               0.019501897 = queryNorm
             0.31985223 = fieldWeight in 520, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.1356745 = idf(docFreq=1930, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
         0.012339173 = weight(abstract_txt:library in 520) [ClassicSimilarity], result of:
           0.012339173 = score(doc=520,freq=1.0), product of:
             0.070755325 = queryWeight, product of:
               1.137741 = boost
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.019501897 = queryNorm
             0.17439215 = fieldWeight in 520, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
         0.15122749 = weight(abstract_txt:sessions in 520) [ClassicSimilarity], result of:
           0.15122749 = score(doc=520,freq=7.0), product of:
             0.15605567 = queryWeight, product of:
               1.1947819 = boost
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.019501897 = queryNorm
             0.96906114 = fieldWeight in 520, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
         0.19774386 = weight(abstract_txt:session in 520) [ClassicSimilarity], result of:
           0.19774386 = score(doc=520,freq=5.0), product of:
             0.23896493 = queryWeight, product of:
               1.8107628 = boost
               6.7669935 = idf(docFreq=138, maxDocs=44421)
               0.019501897 = queryNorm
             0.8275016 = fieldWeight in 520, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               6.7669935 = idf(docFreq=138, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
         0.0866314 = weight(abstract_txt:catalog in 520) [ClassicSimilarity], result of:
           0.0866314 = score(doc=520,freq=2.0), product of:
             0.205909 = queryWeight, product of:
               1.9408926 = boost
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.019501897 = queryNorm
             0.42072666 = fieldWeight in 520, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
         0.056311317 = weight(abstract_txt:were in 520) [ClassicSimilarity], result of:
           0.056311317 = score(doc=520,freq=4.0), product of:
             0.1403813 = queryWeight, product of:
               1.9627461 = boost
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.019501897 = queryNorm
             0.40113115 = fieldWeight in 520, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
         0.03426924 = weight(abstract_txt:about in 520) [ClassicSimilarity], result of:
           0.03426924 = score(doc=520,freq=1.0), product of:
             0.16003016 = queryWeight, product of:
               2.0956097 = boost
               3.9157467 = idf(docFreq=2405, maxDocs=44421)
               0.019501897 = queryNorm
             0.2141424 = fieldWeight in 520, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9157467 = idf(docFreq=2405, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
         0.032503217 = weight(abstract_txt:search in 520) [ClassicSimilarity], result of:
           0.032503217 = score(doc=520,freq=1.0), product of:
             0.16262925 = queryWeight, product of:
               2.2818244 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.019501897 = queryNorm
             0.19986083 = fieldWeight in 520, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
         0.10978016 = weight(abstract_txt:actions in 520) [ClassicSimilarity], result of:
           0.10978016 = score(doc=520,freq=1.0), product of:
             0.3037976 = queryWeight, product of:
               2.3575234 = boost
               6.6077175 = idf(docFreq=162, maxDocs=44421)
               0.019501897 = queryNorm
             0.36135954 = fieldWeight in 520, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6077175 = idf(docFreq=162, maxDocs=44421)
               0.0546875 = fieldNorm(doc=520)
       0.36 = coord(9/25)
   

4. Chen, H.-M.; Cooper, M.D.: Using clustering techniques to detect usage patterns in a Web-based information system (2001) 0.24

   0.24004395 = sum of:
     0.24004395 = product of:
       0.6001099 = sum of:
         0.014101912 = weight(abstract_txt:library in 526) [ClassicSimilarity], result of:
           0.014101912 = score(doc=526,freq=1.0), product of:
             0.070755325 = queryWeight, product of:
               1.137741 = boost
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.019501897 = queryNorm
             0.19930531 = fieldWeight in 526, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
         0.11314472 = weight(abstract_txt:sessions in 526) [ClassicSimilarity], result of:
           0.11314472 = score(doc=526,freq=3.0), product of:
             0.15605567 = queryWeight, product of:
               1.1947819 = boost
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.019501897 = queryNorm
             0.7250279 = fieldWeight in 526, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
         0.019741395 = weight(abstract_txt:users in 526) [ClassicSimilarity], result of:
           0.019741395 = score(doc=526,freq=1.0), product of:
             0.088543974 = queryWeight, product of:
               1.2727507 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.019501897 = queryNorm
             0.22295584 = fieldWeight in 526, 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=526)
         0.06745363 = weight(abstract_txt:patterns in 526) [ClassicSimilarity], result of:
           0.06745363 = score(doc=526,freq=2.0), product of:
             0.14485087 = queryWeight, product of:
               1.409792 = boost
               5.2685275 = idf(docFreq=621, maxDocs=44421)
               0.019501897 = queryNorm
             0.46567643 = fieldWeight in 526, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.2685275 = idf(docFreq=621, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
         0.08254723 = weight(abstract_txt:usage in 526) [ClassicSimilarity], result of:
           0.08254723 = score(doc=526,freq=2.0), product of:
             0.16572419 = queryWeight, product of:
               1.5079516 = boost
               5.6353593 = idf(docFreq=430, maxDocs=44421)
               0.019501897 = queryNorm
             0.4981001 = fieldWeight in 526, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.6353593 = idf(docFreq=430, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
         0.10106713 = weight(abstract_txt:session in 526) [ClassicSimilarity], result of:
           0.10106713 = score(doc=526,freq=1.0), product of:
             0.23896493 = queryWeight, product of:
               1.8107628 = boost
               6.7669935 = idf(docFreq=138, maxDocs=44421)
               0.019501897 = queryNorm
             0.4229371 = fieldWeight in 526, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.7669935 = idf(docFreq=138, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
         0.07000875 = weight(abstract_txt:catalog in 526) [ClassicSimilarity], result of:
           0.07000875 = score(doc=526,freq=1.0), product of:
             0.205909 = queryWeight, product of:
               1.9408926 = boost
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.019501897 = queryNorm
             0.33999848 = fieldWeight in 526, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
         0.055733744 = weight(abstract_txt:were in 526) [ClassicSimilarity], result of:
           0.055733744 = score(doc=526,freq=3.0), product of:
             0.1403813 = queryWeight, product of:
               1.9627461 = boost
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.019501897 = queryNorm
             0.39701685 = fieldWeight in 526, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
         0.03916485 = weight(abstract_txt:about in 526) [ClassicSimilarity], result of:
           0.03916485 = score(doc=526,freq=1.0), product of:
             0.16003016 = queryWeight, product of:
               2.0956097 = boost
               3.9157467 = idf(docFreq=2405, maxDocs=44421)
               0.019501897 = queryNorm
             0.24473417 = fieldWeight in 526, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9157467 = idf(docFreq=2405, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
         0.03714653 = weight(abstract_txt:search in 526) [ClassicSimilarity], result of:
           0.03714653 = score(doc=526,freq=1.0), product of:
             0.16262925 = queryWeight, product of:
               2.2818244 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.019501897 = queryNorm
             0.22841237 = fieldWeight in 526, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.0625 = fieldNorm(doc=526)
       0.4 = coord(10/25)
   

5. Peters, T.A.; Kurth, M.: Controlled and uncontrolled vocabulary subject searching in an academic library online catalog (1991) 0.23

   0.23340037 = sum of:
     0.23340037 = product of:
       0.7293762 = sum of:
         0.06706609 = weight(abstract_txt:average in 2347) [ClassicSimilarity], result of:
           0.06706609 = score(doc=2347,freq=1.0), product of:
             0.12120064 = queryWeight, product of:
               1.0529344 = boost
               5.9023747 = idf(docFreq=329, maxDocs=44421)
               0.019501897 = queryNorm
             0.55334765 = fieldWeight in 2347, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9023747 = idf(docFreq=329, maxDocs=44421)
               0.09375 = fieldNorm(doc=2347)
         0.021152869 = weight(abstract_txt:library in 2347) [ClassicSimilarity], result of:
           0.021152869 = score(doc=2347,freq=1.0), product of:
             0.070755325 = queryWeight, product of:
               1.137741 = boost
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.019501897 = queryNorm
             0.29895797 = fieldWeight in 2347, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.188885 = idf(docFreq=4976, maxDocs=44421)
               0.09375 = fieldNorm(doc=2347)
         0.13857342 = weight(abstract_txt:sessions in 2347) [ClassicSimilarity], result of:
           0.13857342 = score(doc=2347,freq=2.0), product of:
             0.15605567 = queryWeight, product of:
               1.1947819 = boost
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.019501897 = queryNorm
             0.88797426 = fieldWeight in 2347, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.697521 = idf(docFreq=148, maxDocs=44421)
               0.09375 = fieldNorm(doc=2347)
         0.029612094 = weight(abstract_txt:users in 2347) [ClassicSimilarity], result of:
           0.029612094 = score(doc=2347,freq=1.0), product of:
             0.088543974 = queryWeight, product of:
               1.2727507 = boost
               3.5672934 = idf(docFreq=3408, maxDocs=44421)
               0.019501897 = queryNorm
             0.33443376 = fieldWeight in 2347, 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=2347)
         0.15160069 = weight(abstract_txt:session in 2347) [ClassicSimilarity], result of:
           0.15160069 = score(doc=2347,freq=1.0), product of:
             0.23896493 = queryWeight, product of:
               1.8107628 = boost
               6.7669935 = idf(docFreq=138, maxDocs=44421)
               0.019501897 = queryNorm
             0.6344056 = fieldWeight in 2347, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.7669935 = idf(docFreq=138, maxDocs=44421)
               0.09375 = fieldNorm(doc=2347)
         0.14851098 = weight(abstract_txt:catalog in 2347) [ClassicSimilarity], result of:
           0.14851098 = score(doc=2347,freq=2.0), product of:
             0.205909 = queryWeight, product of:
               1.9408926 = boost
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.019501897 = queryNorm
             0.7212457 = fieldWeight in 2347, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4399757 = idf(docFreq=523, maxDocs=44421)
               0.09375 = fieldNorm(doc=2347)
         0.048266843 = weight(abstract_txt:were in 2347) [ClassicSimilarity], result of:
           0.048266843 = score(doc=2347,freq=1.0), product of:
             0.1403813 = queryWeight, product of:
               1.9627461 = boost
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.019501897 = queryNorm
             0.3438267 = fieldWeight in 2347, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6674848 = idf(docFreq=3083, maxDocs=44421)
               0.09375 = fieldNorm(doc=2347)
         0.12459326 = weight(abstract_txt:search in 2347) [ClassicSimilarity], result of:
           0.12459326 = score(doc=2347,freq=5.0), product of:
             0.16262925 = queryWeight, product of:
               2.2818244 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.019501897 = queryNorm
             0.7661184 = fieldWeight in 2347, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.09375 = fieldNorm(doc=2347)
       0.32 = coord(8/25)