Document (#10563)

Author

Fieldhouse, M.
Hancock-Beaulieu, M.

Title

¬The changing face of OKAPI

Source

Library review. 43(1994) no.4, S.38-50

Year

1994

Abstract

Describes the OKAPI projects and OKAPI's development as an experimental online catalogue system over 10 years, first at the University of Westminster (formerly the Polytechnique of Central London) and subsequently at City University, London. The 1st OKAPI project in 1984 introduced 'best match' retrieval and focused on the user interface design. The 2nd investigated word stemming, spelling correction and cross reference tables as retrieval aids. A comparative study of 2 library catalogues was undertaken in 1987, while in 1988 query expansion and relevance feedback were introduced and evaluated by laboratory tests. In 1990 live evaluation of automatic query expansion was carried out and in 1993 subject enhancement of bibliographic records was investigated. The latest project has examined the design of a graphical user interface to support interactive query expansion. Discusses the research and evaluation of each project

Theme

OPAC
Suchoberflächen
Semantisches Umfeld in Indexierung u. Retrieval

Object

OKAPI

Similar documents (author)

1. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996) 6.54

   6.5357237 = sum of:
     6.5357237 = sum of:
       1.6670318 = weight(author_txt:beaulieu in 6958) [ClassicSimilarity], result of:
         1.6670318 = score(doc=6958,freq=1.0), product of:
           0.4787353 = queryWeight, product of:
             7.9592175 = idf(docFreq=41, maxDocs=44218)
             0.060148537 = queryNorm
           3.4821577 = fieldWeight in 6958, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.9592175 = idf(docFreq=41, maxDocs=44218)
             0.4375 = fieldNorm(doc=6958)
       1.8033619 = weight(author_txt:hancock in 6958) [ClassicSimilarity], result of:
         1.8033619 = score(doc=6958,freq=1.0), product of:
           0.5044926 = queryWeight, product of:
             1.026549 = boost
             8.1705265 = idf(docFreq=33, maxDocs=44218)
             0.060148537 = queryNorm
           3.5746055 = fieldWeight in 6958, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.1705265 = idf(docFreq=33, maxDocs=44218)
             0.4375 = fieldNorm(doc=6958)
       3.0653298 = weight(author_txt:fieldhouse in 6958) [ClassicSimilarity], result of:
         3.0653298 = score(doc=6958,freq=1.0), product of:
           0.7185401 = queryWeight, product of:
             1.2251176 = boost
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.060148537 = queryNorm
           4.2660527 = fieldWeight in 6958, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.4375 = fieldNorm(doc=6958)
   

2. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬An evaluation of interactive query expansion in an online library catalogue with a graphical user interface (1995) 5.60

   5.602049 = sum of:
     5.602049 = sum of:
       1.4288844 = weight(author_txt:beaulieu in 1666) [ClassicSimilarity], result of:
         1.4288844 = score(doc=1666,freq=1.0), product of:
           0.4787353 = queryWeight, product of:
             7.9592175 = idf(docFreq=41, maxDocs=44218)
             0.060148537 = queryNorm
           2.9847066 = fieldWeight in 1666, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.9592175 = idf(docFreq=41, maxDocs=44218)
             0.375 = fieldNorm(doc=1666)
       1.5457387 = weight(author_txt:hancock in 1666) [ClassicSimilarity], result of:
         1.5457387 = score(doc=1666,freq=1.0), product of:
           0.5044926 = queryWeight, product of:
             1.026549 = boost
             8.1705265 = idf(docFreq=33, maxDocs=44218)
             0.060148537 = queryNorm
           3.0639474 = fieldWeight in 1666, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.1705265 = idf(docFreq=33, maxDocs=44218)
             0.375 = fieldNorm(doc=1666)
       2.6274257 = weight(author_txt:fieldhouse in 1666) [ClassicSimilarity], result of:
         2.6274257 = score(doc=1666,freq=1.0), product of:
           0.7185401 = queryWeight, product of:
             1.2251176 = boost
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.060148537 = queryNorm
           3.6566167 = fieldWeight in 1666, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.375 = fieldNorm(doc=1666)
   

3. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬A graphical interface for OKAPI : the design and evaluation of an online catalogue system with direct manipulation interaction for subject access (1994) 5.60

   5.602049 = sum of:
     5.602049 = sum of:
       1.4288844 = weight(author_txt:beaulieu in 1318) [ClassicSimilarity], result of:
         1.4288844 = score(doc=1318,freq=1.0), product of:
           0.4787353 = queryWeight, product of:
             7.9592175 = idf(docFreq=41, maxDocs=44218)
             0.060148537 = queryNorm
           2.9847066 = fieldWeight in 1318, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             7.9592175 = idf(docFreq=41, maxDocs=44218)
             0.375 = fieldNorm(doc=1318)
       1.5457387 = weight(author_txt:hancock in 1318) [ClassicSimilarity], result of:
         1.5457387 = score(doc=1318,freq=1.0), product of:
           0.5044926 = queryWeight, product of:
             1.026549 = boost
             8.1705265 = idf(docFreq=33, maxDocs=44218)
             0.060148537 = queryNorm
           3.0639474 = fieldWeight in 1318, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             8.1705265 = idf(docFreq=33, maxDocs=44218)
             0.375 = fieldNorm(doc=1318)
       2.6274257 = weight(author_txt:fieldhouse in 1318) [ClassicSimilarity], result of:
         2.6274257 = score(doc=1318,freq=1.0), product of:
           0.7185401 = queryWeight, product of:
             1.2251176 = boost
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.060148537 = queryNorm
           3.6566167 = fieldWeight in 1318, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.375 = fieldNorm(doc=1318)
   

4. Hancock-Beaulieu, M.M.: User friendliness and human-computer interaction in online library catalogues (1992) 2.64

   2.6441095 = sum of:
     2.6441095 = product of:
       3.966164 = sum of:
         1.9051791 = weight(author_txt:beaulieu in 1255) [ClassicSimilarity], result of:
           1.9051791 = score(doc=1255,freq=1.0), product of:
             0.4787353 = queryWeight, product of:
               7.9592175 = idf(docFreq=41, maxDocs=44218)
               0.060148537 = queryNorm
             3.9796088 = fieldWeight in 1255, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9592175 = idf(docFreq=41, maxDocs=44218)
               0.5 = fieldNorm(doc=1255)
         2.060985 = weight(author_txt:hancock in 1255) [ClassicSimilarity], result of:
           2.060985 = score(doc=1255,freq=1.0), product of:
             0.5044926 = queryWeight, product of:
               1.026549 = boost
               8.1705265 = idf(docFreq=33, maxDocs=44218)
               0.060148537 = queryNorm
             4.0852633 = fieldWeight in 1255, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.1705265 = idf(docFreq=33, maxDocs=44218)
               0.5 = fieldNorm(doc=1255)
       0.6666667 = coord(2/3)
   

5. Hancock-Beaulieu, M.: Query expansion : advances in research in online catalogues (1992) 2.64

   2.6441095 = sum of:
     2.6441095 = product of:
       3.966164 = sum of:
         1.9051791 = weight(author_txt:beaulieu in 2351) [ClassicSimilarity], result of:
           1.9051791 = score(doc=2351,freq=1.0), product of:
             0.4787353 = queryWeight, product of:
               7.9592175 = idf(docFreq=41, maxDocs=44218)
               0.060148537 = queryNorm
             3.9796088 = fieldWeight in 2351, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.9592175 = idf(docFreq=41, maxDocs=44218)
               0.5 = fieldNorm(doc=2351)
         2.060985 = weight(author_txt:hancock in 2351) [ClassicSimilarity], result of:
           2.060985 = score(doc=2351,freq=1.0), product of:
             0.5044926 = queryWeight, product of:
               1.026549 = boost
               8.1705265 = idf(docFreq=33, maxDocs=44218)
               0.060148537 = queryNorm
             4.0852633 = fieldWeight in 2351, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.1705265 = idf(docFreq=33, maxDocs=44218)
               0.5 = fieldNorm(doc=2351)
       0.6666667 = coord(2/3)
   

Similar documents (content)

1. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996) 0.37

   0.3661841 = sum of:
     0.3661841 = product of:
       1.0171779 = sum of:
         0.09030322 = weight(abstract_txt:city in 6958) [ClassicSimilarity], result of:
           0.09030322 = score(doc=6958,freq=1.0), product of:
             0.13767557 = queryWeight, product of:
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.01967804 = queryNorm
             0.6559132 = fieldWeight in 6958, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
         0.026357587 = weight(abstract_txt:user in 6958) [ClassicSimilarity], result of:
           0.026357587 = score(doc=6958,freq=1.0), product of:
             0.0763253 = queryWeight, product of:
               1.0529816 = boost
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.01967804 = queryNorm
             0.34533226 = fieldWeight in 6958, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
         0.04495083 = weight(abstract_txt:design in 6958) [ClassicSimilarity], result of:
           0.04495083 = score(doc=6958,freq=2.0), product of:
             0.08647288 = queryWeight, product of:
               1.1207958 = boost
               3.9207718 = idf(docFreq=2382, maxDocs=44218)
               0.01967804 = queryNorm
             0.5198258 = fieldWeight in 6958, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9207718 = idf(docFreq=2382, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
         0.040913217 = weight(abstract_txt:university in 6958) [ClassicSimilarity], result of:
           0.040913217 = score(doc=6958,freq=1.0), product of:
             0.10232314 = queryWeight, product of:
               1.2191958 = boost
               4.264995 = idf(docFreq=1688, maxDocs=44218)
               0.01967804 = queryNorm
             0.39984328 = fieldWeight in 6958, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.264995 = idf(docFreq=1688, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
         0.047610834 = weight(abstract_txt:evaluation in 6958) [ClassicSimilarity], result of:
           0.047610834 = score(doc=6958,freq=1.0), product of:
             0.113205776 = queryWeight, product of:
               1.2823921 = boost
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.01967804 = queryNorm
             0.42056894 = fieldWeight in 6958, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
         0.060559906 = weight(abstract_txt:interface in 6958) [ClassicSimilarity], result of:
           0.060559906 = score(doc=6958,freq=1.0), product of:
             0.13289894 = queryWeight, product of:
               1.389464 = boost
               4.860628 = idf(docFreq=930, maxDocs=44218)
               0.01967804 = queryNorm
             0.4556839 = fieldWeight in 6958, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.860628 = idf(docFreq=930, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
         0.12017865 = weight(abstract_txt:query in 6958) [ClassicSimilarity], result of:
           0.12017865 = score(doc=6958,freq=2.0), product of:
             0.19067922 = queryWeight, product of:
               2.038374 = boost
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.01967804 = queryNorm
             0.6302661 = fieldWeight in 6958, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
         0.18007293 = weight(abstract_txt:expansion in 6958) [ClassicSimilarity], result of:
           0.18007293 = score(doc=6958,freq=1.0), product of:
             0.31457734 = queryWeight, product of:
               2.6181583 = boost
               6.1059003 = idf(docFreq=267, maxDocs=44218)
               0.01967804 = queryNorm
             0.57242817 = fieldWeight in 6958, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1059003 = idf(docFreq=267, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
         0.40623078 = weight(abstract_txt:okapi in 6958) [ClassicSimilarity], result of:
           0.40623078 = score(doc=6958,freq=1.0), product of:
             0.54109937 = queryWeight, product of:
               3.4337661 = boost
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.01967804 = queryNorm
             0.7507508 = fieldWeight in 6958, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.09375 = fieldNorm(doc=6958)
       0.36 = coord(9/25)
   

2. Beaulieu, M.; Payne, A.; Do, T.; Jones, S.: ENQUIRE Okapi project (1996) 0.33

   0.32644457 = sum of:
     0.32644457 = product of:
       1.0201393 = sum of:
         0.0380439 = weight(abstract_txt:user in 3369) [ClassicSimilarity], result of:
           0.0380439 = score(doc=3369,freq=3.0), product of:
             0.0763253 = queryWeight, product of:
               1.0529816 = boost
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.01967804 = queryNorm
             0.49844417 = fieldWeight in 3369, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.078125 = fieldNorm(doc=3369)
         0.039675694 = weight(abstract_txt:evaluation in 3369) [ClassicSimilarity], result of:
           0.039675694 = score(doc=3369,freq=1.0), product of:
             0.113205776 = queryWeight, product of:
               1.2823921 = boost
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.01967804 = queryNorm
             0.35047412 = fieldWeight in 3369, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.078125 = fieldNorm(doc=3369)
         0.071370535 = weight(abstract_txt:interface in 3369) [ClassicSimilarity], result of:
           0.071370535 = score(doc=3369,freq=2.0), product of:
             0.13289894 = queryWeight, product of:
               1.389464 = boost
               4.860628 = idf(docFreq=930, maxDocs=44218)
               0.01967804 = queryNorm
             0.5370286 = fieldWeight in 3369, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.860628 = idf(docFreq=930, maxDocs=44218)
               0.078125 = fieldNorm(doc=3369)
         0.07824631 = weight(abstract_txt:project in 3369) [ClassicSimilarity], result of:
           0.07824631 = score(doc=3369,freq=2.0), product of:
             0.1617516 = queryWeight, product of:
               1.8773985 = boost
               4.378348 = idf(docFreq=1507, maxDocs=44218)
               0.01967804 = queryNorm
             0.48374367 = fieldWeight in 3369, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.378348 = idf(docFreq=1507, maxDocs=44218)
               0.078125 = fieldNorm(doc=3369)
         0.14191036 = weight(abstract_txt:london in 3369) [ClassicSimilarity], result of:
           0.14191036 = score(doc=3369,freq=1.0), product of:
             0.26476565 = queryWeight, product of:
               1.9611796 = boost
               6.8606052 = idf(docFreq=125, maxDocs=44218)
               0.01967804 = queryNorm
             0.53598475 = fieldWeight in 3369, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.8606052 = idf(docFreq=125, maxDocs=44218)
               0.078125 = fieldNorm(doc=3369)
         0.10014888 = weight(abstract_txt:query in 3369) [ClassicSimilarity], result of:
           0.10014888 = score(doc=3369,freq=2.0), product of:
             0.19067922 = queryWeight, product of:
               2.038374 = boost
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.01967804 = queryNorm
             0.52522177 = fieldWeight in 3369, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.078125 = fieldNorm(doc=3369)
         0.21221799 = weight(abstract_txt:expansion in 3369) [ClassicSimilarity], result of:
           0.21221799 = score(doc=3369,freq=2.0), product of:
             0.31457734 = queryWeight, product of:
               2.6181583 = boost
               6.1059003 = idf(docFreq=267, maxDocs=44218)
               0.01967804 = queryNorm
             0.67461306 = fieldWeight in 3369, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.1059003 = idf(docFreq=267, maxDocs=44218)
               0.078125 = fieldNorm(doc=3369)
         0.33852562 = weight(abstract_txt:okapi in 3369) [ClassicSimilarity], result of:
           0.33852562 = score(doc=3369,freq=1.0), product of:
             0.54109937 = queryWeight, product of:
               3.4337661 = boost
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.01967804 = queryNorm
             0.6256256 = fieldWeight in 3369, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.078125 = fieldNorm(doc=3369)
       0.32 = coord(8/25)
   

3. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬A graphical interface for OKAPI : the design and evaluation of an online catalogue system with direct manipulation interaction for subject access (1994) 0.32

   0.31986105 = sum of:
     0.31986105 = product of:
       0.99956584 = sum of:
         0.026357587 = weight(abstract_txt:user in 1318) [ClassicSimilarity], result of:
           0.026357587 = score(doc=1318,freq=1.0), product of:
             0.0763253 = queryWeight, product of:
               1.0529816 = boost
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.01967804 = queryNorm
             0.34533226 = fieldWeight in 1318, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.09375 = fieldNorm(doc=1318)
         0.055053305 = weight(abstract_txt:design in 1318) [ClassicSimilarity], result of:
           0.055053305 = score(doc=1318,freq=3.0), product of:
             0.08647288 = queryWeight, product of:
               1.1207958 = boost
               3.9207718 = idf(docFreq=2382, maxDocs=44218)
               0.01967804 = queryNorm
             0.636654 = fieldWeight in 1318, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9207718 = idf(docFreq=2382, maxDocs=44218)
               0.09375 = fieldNorm(doc=1318)
         0.06733189 = weight(abstract_txt:evaluation in 1318) [ClassicSimilarity], result of:
           0.06733189 = score(doc=1318,freq=2.0), product of:
             0.113205776 = queryWeight, product of:
               1.2823921 = boost
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.01967804 = queryNorm
             0.5947743 = fieldWeight in 1318, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.09375 = fieldNorm(doc=1318)
         0.08564464 = weight(abstract_txt:interface in 1318) [ClassicSimilarity], result of:
           0.08564464 = score(doc=1318,freq=2.0), product of:
             0.13289894 = queryWeight, product of:
               1.389464 = boost
               4.860628 = idf(docFreq=930, maxDocs=44218)
               0.01967804 = queryNorm
             0.64443433 = fieldWeight in 1318, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.860628 = idf(docFreq=930, maxDocs=44218)
               0.09375 = fieldNorm(doc=1318)
         0.09389557 = weight(abstract_txt:project in 1318) [ClassicSimilarity], result of:
           0.09389557 = score(doc=1318,freq=2.0), product of:
             0.1617516 = queryWeight, product of:
               1.8773985 = boost
               4.378348 = idf(docFreq=1507, maxDocs=44218)
               0.01967804 = queryNorm
             0.5804924 = fieldWeight in 1318, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.378348 = idf(docFreq=1507, maxDocs=44218)
               0.09375 = fieldNorm(doc=1318)
         0.08497913 = weight(abstract_txt:query in 1318) [ClassicSimilarity], result of:
           0.08497913 = score(doc=1318,freq=1.0), product of:
             0.19067922 = queryWeight, product of:
               2.038374 = boost
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.01967804 = queryNorm
             0.44566542 = fieldWeight in 1318, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.09375 = fieldNorm(doc=1318)
         0.18007293 = weight(abstract_txt:expansion in 1318) [ClassicSimilarity], result of:
           0.18007293 = score(doc=1318,freq=1.0), product of:
             0.31457734 = queryWeight, product of:
               2.6181583 = boost
               6.1059003 = idf(docFreq=267, maxDocs=44218)
               0.01967804 = queryNorm
             0.57242817 = fieldWeight in 1318, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1059003 = idf(docFreq=267, maxDocs=44218)
               0.09375 = fieldNorm(doc=1318)
         0.40623078 = weight(abstract_txt:okapi in 1318) [ClassicSimilarity], result of:
           0.40623078 = score(doc=1318,freq=1.0), product of:
             0.54109937 = queryWeight, product of:
               3.4337661 = boost
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.01967804 = queryNorm
             0.7507508 = fieldWeight in 1318, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.09375 = fieldNorm(doc=1318)
       0.32 = coord(8/25)
   

4. Robertson, S.E.: OKAPI at TREC-3 (1995) 0.27

   0.2699215 = sum of:
     0.2699215 = product of:
       0.96400535 = sum of:
         0.09030322 = weight(abstract_txt:city in 5694) [ClassicSimilarity], result of:
           0.09030322 = score(doc=5694,freq=1.0), product of:
             0.13767557 = queryWeight, product of:
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.01967804 = queryNorm
             0.6559132 = fieldWeight in 5694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.09375 = fieldNorm(doc=5694)
         0.026357587 = weight(abstract_txt:user in 5694) [ClassicSimilarity], result of:
           0.026357587 = score(doc=5694,freq=1.0), product of:
             0.0763253 = queryWeight, product of:
               1.0529816 = boost
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.01967804 = queryNorm
             0.34533226 = fieldWeight in 5694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.09375 = fieldNorm(doc=5694)
         0.040913217 = weight(abstract_txt:university in 5694) [ClassicSimilarity], result of:
           0.040913217 = score(doc=5694,freq=1.0), product of:
             0.10232314 = queryWeight, product of:
               1.2191958 = boost
               4.264995 = idf(docFreq=1688, maxDocs=44218)
               0.01967804 = queryNorm
             0.39984328 = fieldWeight in 5694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.264995 = idf(docFreq=1688, maxDocs=44218)
               0.09375 = fieldNorm(doc=5694)
         0.060559906 = weight(abstract_txt:interface in 5694) [ClassicSimilarity], result of:
           0.060559906 = score(doc=5694,freq=1.0), product of:
             0.13289894 = queryWeight, product of:
               1.389464 = boost
               4.860628 = idf(docFreq=930, maxDocs=44218)
               0.01967804 = queryNorm
             0.4556839 = fieldWeight in 5694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.860628 = idf(docFreq=930, maxDocs=44218)
               0.09375 = fieldNorm(doc=5694)
         0.08497913 = weight(abstract_txt:query in 5694) [ClassicSimilarity], result of:
           0.08497913 = score(doc=5694,freq=1.0), product of:
             0.19067922 = queryWeight, product of:
               2.038374 = boost
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.01967804 = queryNorm
             0.44566542 = fieldWeight in 5694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.09375 = fieldNorm(doc=5694)
         0.25466156 = weight(abstract_txt:expansion in 5694) [ClassicSimilarity], result of:
           0.25466156 = score(doc=5694,freq=2.0), product of:
             0.31457734 = queryWeight, product of:
               2.6181583 = boost
               6.1059003 = idf(docFreq=267, maxDocs=44218)
               0.01967804 = queryNorm
             0.8095356 = fieldWeight in 5694, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.1059003 = idf(docFreq=267, maxDocs=44218)
               0.09375 = fieldNorm(doc=5694)
         0.40623078 = weight(abstract_txt:okapi in 5694) [ClassicSimilarity], result of:
           0.40623078 = score(doc=5694,freq=1.0), product of:
             0.54109937 = queryWeight, product of:
               3.4337661 = boost
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.01967804 = queryNorm
             0.7507508 = fieldWeight in 5694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.09375 = fieldNorm(doc=5694)
       0.28 = coord(7/25)
   

5. Beaulieu, M.; Robertson, S.; Rasmussen, E.: Evaluating interactive systems in TREC (1996) 0.26

   0.2638632 = sum of:
     0.2638632 = product of:
       0.82457256 = sum of:
         0.07525268 = weight(abstract_txt:city in 2998) [ClassicSimilarity], result of:
           0.07525268 = score(doc=2998,freq=1.0), product of:
             0.13767557 = queryWeight, product of:
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.01967804 = queryNorm
             0.5465943 = fieldWeight in 2998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.078125 = fieldNorm(doc=2998)
         0.10642336 = weight(abstract_txt:laboratory in 2998) [ClassicSimilarity], result of:
           0.10642336 = score(doc=2998,freq=2.0), product of:
             0.13767557 = queryWeight, product of:
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.01967804 = queryNorm
             0.7730011 = fieldWeight in 2998, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.078125 = fieldNorm(doc=2998)
         0.031062715 = weight(abstract_txt:user in 2998) [ClassicSimilarity], result of:
           0.031062715 = score(doc=2998,freq=2.0), product of:
             0.0763253 = queryWeight, product of:
               1.0529816 = boost
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.01967804 = queryNorm
             0.40697798 = fieldWeight in 2998, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6835442 = idf(docFreq=3020, maxDocs=44218)
               0.078125 = fieldNorm(doc=2998)
         0.026487533 = weight(abstract_txt:design in 2998) [ClassicSimilarity], result of:
           0.026487533 = score(doc=2998,freq=1.0), product of:
             0.08647288 = queryWeight, product of:
               1.1207958 = boost
               3.9207718 = idf(docFreq=2382, maxDocs=44218)
               0.01967804 = queryNorm
             0.3063103 = fieldWeight in 2998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9207718 = idf(docFreq=2382, maxDocs=44218)
               0.078125 = fieldNorm(doc=2998)
         0.034094352 = weight(abstract_txt:university in 2998) [ClassicSimilarity], result of:
           0.034094352 = score(doc=2998,freq=1.0), product of:
             0.10232314 = queryWeight, product of:
               1.2191958 = boost
               4.264995 = idf(docFreq=1688, maxDocs=44218)
               0.01967804 = queryNorm
             0.33320275 = fieldWeight in 2998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.264995 = idf(docFreq=1688, maxDocs=44218)
               0.078125 = fieldNorm(doc=2998)
         0.14191036 = weight(abstract_txt:london in 2998) [ClassicSimilarity], result of:
           0.14191036 = score(doc=2998,freq=1.0), product of:
             0.26476565 = queryWeight, product of:
               1.9611796 = boost
               6.8606052 = idf(docFreq=125, maxDocs=44218)
               0.01967804 = queryNorm
             0.53598475 = fieldWeight in 2998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.8606052 = idf(docFreq=125, maxDocs=44218)
               0.078125 = fieldNorm(doc=2998)
         0.07081595 = weight(abstract_txt:query in 2998) [ClassicSimilarity], result of:
           0.07081595 = score(doc=2998,freq=1.0), product of:
             0.19067922 = queryWeight, product of:
               2.038374 = boost
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.01967804 = queryNorm
             0.37138787 = fieldWeight in 2998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7537646 = idf(docFreq=1035, maxDocs=44218)
               0.078125 = fieldNorm(doc=2998)
         0.33852562 = weight(abstract_txt:okapi in 2998) [ClassicSimilarity], result of:
           0.33852562 = score(doc=2998,freq=1.0), product of:
             0.54109937 = queryWeight, product of:
               3.4337661 = boost
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.01967804 = queryNorm
             0.6256256 = fieldWeight in 2998, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.008008 = idf(docFreq=39, maxDocs=44218)
               0.078125 = fieldNorm(doc=2998)
       0.32 = coord(8/25)