Document (#16780)

Author

Grossman, D.A.

Title

Integrating structured data and text : a relational approach

Source

Journal of the American Society for Information Science. 48(1997) no.2, S.122-132

Year

1997

Abstract

Integrates structured data and text using the unchanged, standard relational model to implement an information retrieval system. Uses a prototype to verify it, and then investigates the performance of a parallel relational database system for this application. Also tests the effect of query reduction on accuracy and finds that queries can be reduced prior to their implementation without incurring a significant loss in precision/recall. This reduction also serves to improve run-time performance. Compares the results to a special purpose information retrieval system. The relational model offers scalable performance and includes the ability to integrate structured data and text in a portable fashion

Similar documents (author)

1. Grossman, B.L.: Troubleshooting tips for CD-ROM drive installation and maintenance (1993) 5.71

   5.7074614 = sum of:
     5.7074614 = weight(author_txt:grossman in 3745) [ClassicSimilarity], result of:
       5.7074614 = fieldWeight in 3745, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.131938 = idf(docFreq=12, maxDocs=44218)
         0.625 = fieldNorm(doc=3745)
   

2. Grossman, B.L.: MSCDEX: creating uniformity for the growing CD-ROM industry (1993) 5.71

   5.7074614 = sum of:
     5.7074614 = weight(author_txt:grossman in 4538) [ClassicSimilarity], result of:
       5.7074614 = fieldWeight in 4538, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.131938 = idf(docFreq=12, maxDocs=44218)
         0.625 = fieldNorm(doc=4538)
   

3. Grossman, D.A.; Frieder, O.: Information retrieval : algorithms and heuristics (1998) 4.57

   4.565969 = sum of:
     4.565969 = weight(author_txt:grossman in 2182) [ClassicSimilarity], result of:
       4.565969 = fieldWeight in 2182, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.131938 = idf(docFreq=12, maxDocs=44218)
         0.5 = fieldNorm(doc=2182)
   

4. Grossman, D.A.; Frieder, O.: Information retrieval : algorithms and heuristics (2004) 4.57

   4.565969 = sum of:
     4.565969 = weight(author_txt:grossman in 1486) [ClassicSimilarity], result of:
       4.565969 = fieldWeight in 1486, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.131938 = idf(docFreq=12, maxDocs=44218)
         0.5 = fieldNorm(doc=1486)
   

5. Aljlayl, M.; Frieder, O.; Grossman, D.: On bidirectional English-Arabic search (2002) 3.42

   3.4244766 = sum of:
     3.4244766 = weight(author_txt:grossman in 5227) [ClassicSimilarity], result of:
       3.4244766 = fieldWeight in 5227, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.131938 = idf(docFreq=12, maxDocs=44218)
         0.375 = fieldNorm(doc=5227)
   

Similar documents (content)

1. Hickey, T.B.: ¬The Experimental Library System (XLS) (1989) 0.22

   0.22005989 = sum of:
     0.22005989 = product of:
       0.9169162 = sum of:
         0.1202766 = weight(abstract_txt:integrating in 2875) [ClassicSimilarity], result of:
           0.1202766 = score(doc=2875,freq=1.0), product of:
             0.12167878 = queryWeight, product of:
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.019233953 = queryNorm
             0.9884764 = fieldWeight in 2875, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.15625 = fieldNorm(doc=2875)
         0.03987392 = weight(abstract_txt:retrieval in 2875) [ClassicSimilarity], result of:
           0.03987392 = score(doc=2875,freq=1.0), product of:
             0.07343392 = queryWeight, product of:
               1.0986413 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.019233953 = queryNorm
             0.5429905 = fieldWeight in 2875, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.15625 = fieldNorm(doc=2875)
         0.052927036 = weight(abstract_txt:data in 2875) [ClassicSimilarity], result of:
           0.052927036 = score(doc=2875,freq=1.0), product of:
             0.101528086 = queryWeight, product of:
               1.5821451 = boost
               3.3363478 = idf(docFreq=4274, maxDocs=44218)
               0.019233953 = queryNorm
             0.52130437 = fieldWeight in 2875, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3363478 = idf(docFreq=4274, maxDocs=44218)
               0.15625 = fieldNorm(doc=2875)
         0.09466862 = weight(abstract_txt:system in 2875) [ClassicSimilarity], result of:
           0.09466862 = score(doc=2875,freq=3.0), product of:
             0.1037285 = queryWeight, product of:
               1.5991981 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.019233953 = queryNorm
             0.91265774 = fieldWeight in 2875, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.15625 = fieldNorm(doc=2875)
         0.09424406 = weight(abstract_txt:text in 2875) [ClassicSimilarity], result of:
           0.09424406 = score(doc=2875,freq=1.0), product of:
             0.14915477 = queryWeight, product of:
               1.9176607 = boost
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.019233953 = queryNorm
             0.6318542 = fieldWeight in 2875, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.15625 = fieldNorm(doc=2875)
         0.51492596 = weight(abstract_txt:relational in 2875) [ClassicSimilarity], result of:
           0.51492596 = score(doc=2875,freq=1.0), product of:
             0.5092651 = queryWeight, product of:
               4.091613 = boost
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.019233953 = queryNorm
             1.0111157 = fieldWeight in 2875, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.15625 = fieldNorm(doc=2875)
       0.24 = coord(6/25)
   

2. Sarinder, K.K.S.; Lim, L.H.S.; Merican, A.F.; Dimyati, K.: Biodiversity information retrieval across networked data sets (2010) 0.20

   0.19892898 = sum of:
     0.19892898 = product of:
       0.5525805 = sum of:
         0.06803872 = weight(abstract_txt:integrate in 3951) [ClassicSimilarity], result of:
           0.06803872 = score(doc=3951,freq=2.0), product of:
             0.12167878 = queryWeight, product of:
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.019233953 = queryNorm
             0.55916667 = fieldWeight in 3951, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
         0.04811064 = weight(abstract_txt:integrating in 3951) [ClassicSimilarity], result of:
           0.04811064 = score(doc=3951,freq=1.0), product of:
             0.12167878 = queryWeight, product of:
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.019233953 = queryNorm
             0.39539057 = fieldWeight in 3951, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
         0.014915427 = weight(abstract_txt:also in 3951) [ClassicSimilarity], result of:
           0.014915427 = score(doc=3951,freq=1.0), product of:
             0.070224375 = queryWeight, product of:
               1.0743642 = boost
               3.3983476 = idf(docFreq=4017, maxDocs=44218)
               0.019233953 = queryNorm
             0.21239673 = fieldWeight in 3951, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3983476 = idf(docFreq=4017, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
         0.01594957 = weight(abstract_txt:retrieval in 3951) [ClassicSimilarity], result of:
           0.01594957 = score(doc=3951,freq=1.0), product of:
             0.07343392 = queryWeight, product of:
               1.0986413 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.019233953 = queryNorm
             0.21719621 = fieldWeight in 3951, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
         0.034043614 = weight(abstract_txt:model in 3951) [ClassicSimilarity], result of:
           0.034043614 = score(doc=3951,freq=2.0), product of:
             0.09662241 = queryWeight, product of:
               1.2602204 = boost
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.019233953 = queryNorm
             0.35233662 = fieldWeight in 3951, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
         0.05185769 = weight(abstract_txt:data in 3951) [ClassicSimilarity], result of:
           0.05185769 = score(doc=3951,freq=6.0), product of:
             0.101528086 = queryWeight, product of:
               1.5821451 = boost
               3.3363478 = idf(docFreq=4274, maxDocs=44218)
               0.019233953 = queryNorm
             0.5107719 = fieldWeight in 3951, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.3363478 = idf(docFreq=4274, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
         0.021862783 = weight(abstract_txt:system in 3951) [ClassicSimilarity], result of:
           0.021862783 = score(doc=3951,freq=1.0), product of:
             0.1037285 = queryWeight, product of:
               1.5991981 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.019233953 = queryNorm
             0.21076928 = fieldWeight in 3951, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
         0.09183169 = weight(abstract_txt:structured in 3951) [ClassicSimilarity], result of:
           0.09183169 = score(doc=3951,freq=1.0), product of:
             0.27003676 = queryWeight, product of:
               2.580267 = boost
               5.4411373 = idf(docFreq=520, maxDocs=44218)
               0.019233953 = queryNorm
             0.34007108 = fieldWeight in 3951, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4411373 = idf(docFreq=520, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
         0.20597038 = weight(abstract_txt:relational in 3951) [ClassicSimilarity], result of:
           0.20597038 = score(doc=3951,freq=1.0), product of:
             0.5092651 = queryWeight, product of:
               4.091613 = boost
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.019233953 = queryNorm
             0.40444627 = fieldWeight in 3951, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.0625 = fieldNorm(doc=3951)
       0.36 = coord(9/25)
   

3. Hoogeveen, M.J.; Meer, K. van der: Integration of information retrieval and database management in support of multimedia police work (1994) 0.17

   0.17355242 = sum of:
     0.17355242 = product of:
       0.6198301 = sum of:
         0.0601383 = weight(abstract_txt:integrate in 7149) [ClassicSimilarity], result of:
           0.0601383 = score(doc=7149,freq=1.0), product of:
             0.12167878 = queryWeight, product of:
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.019233953 = queryNorm
             0.4942382 = fieldWeight in 7149, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.078125 = fieldNorm(doc=7149)
         0.0601383 = weight(abstract_txt:integrating in 7149) [ClassicSimilarity], result of:
           0.0601383 = score(doc=7149,freq=1.0), product of:
             0.12167878 = queryWeight, product of:
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.019233953 = queryNorm
             0.4942382 = fieldWeight in 7149, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.326249 = idf(docFreq=214, maxDocs=44218)
               0.078125 = fieldNorm(doc=7149)
         0.034531828 = weight(abstract_txt:retrieval in 7149) [ClassicSimilarity], result of:
           0.034531828 = score(doc=7149,freq=3.0), product of:
             0.07343392 = queryWeight, product of:
               1.0986413 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.019233953 = queryNorm
             0.47024357 = fieldWeight in 7149, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.078125 = fieldNorm(doc=7149)
         0.026463518 = weight(abstract_txt:data in 7149) [ClassicSimilarity], result of:
           0.026463518 = score(doc=7149,freq=1.0), product of:
             0.101528086 = queryWeight, product of:
               1.5821451 = boost
               3.3363478 = idf(docFreq=4274, maxDocs=44218)
               0.019233953 = queryNorm
             0.26065218 = fieldWeight in 7149, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3363478 = idf(docFreq=4274, maxDocs=44218)
               0.078125 = fieldNorm(doc=7149)
         0.027328476 = weight(abstract_txt:system in 7149) [ClassicSimilarity], result of:
           0.027328476 = score(doc=7149,freq=1.0), product of:
             0.1037285 = queryWeight, product of:
               1.5991981 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.019233953 = queryNorm
             0.2634616 = fieldWeight in 7149, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.078125 = fieldNorm(doc=7149)
         0.04712203 = weight(abstract_txt:text in 7149) [ClassicSimilarity], result of:
           0.04712203 = score(doc=7149,freq=1.0), product of:
             0.14915477 = queryWeight, product of:
               1.9176607 = boost
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.019233953 = queryNorm
             0.3159271 = fieldWeight in 7149, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.078125 = fieldNorm(doc=7149)
         0.3641076 = weight(abstract_txt:relational in 7149) [ClassicSimilarity], result of:
           0.3641076 = score(doc=7149,freq=2.0), product of:
             0.5092651 = queryWeight, product of:
               4.091613 = boost
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.019233953 = queryNorm
             0.7149667 = fieldWeight in 7149, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.078125 = fieldNorm(doc=7149)
       0.28 = coord(7/25)
   

4. Larson, R.R.; Carson, C.: Information access for a digital library : Cheshire II and the Berkeley environment digital library (1999) 0.16

   0.15964703 = sum of:
     0.15964703 = product of:
       0.57016796 = sum of:
         0.078823835 = weight(abstract_txt:implement in 6685) [ClassicSimilarity], result of:
           0.078823835 = score(doc=6685,freq=1.0), product of:
             0.12905206 = queryWeight, product of:
               1.0298525 = boost
               6.515104 = idf(docFreq=177, maxDocs=44218)
               0.019233953 = queryNorm
             0.61079097 = fieldWeight in 6685, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.515104 = idf(docFreq=177, maxDocs=44218)
               0.09375 = fieldNorm(doc=6685)
         0.02237314 = weight(abstract_txt:also in 6685) [ClassicSimilarity], result of:
           0.02237314 = score(doc=6685,freq=1.0), product of:
             0.070224375 = queryWeight, product of:
               1.0743642 = boost
               3.3983476 = idf(docFreq=4017, maxDocs=44218)
               0.019233953 = queryNorm
             0.31859508 = fieldWeight in 6685, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3983476 = idf(docFreq=4017, maxDocs=44218)
               0.09375 = fieldNorm(doc=6685)
         0.023924353 = weight(abstract_txt:retrieval in 6685) [ClassicSimilarity], result of:
           0.023924353 = score(doc=6685,freq=1.0), product of:
             0.07343392 = queryWeight, product of:
               1.0986413 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.019233953 = queryNorm
             0.3257943 = fieldWeight in 6685, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.09375 = fieldNorm(doc=6685)
         0.1344766 = weight(abstract_txt:scalable in 6685) [ClassicSimilarity], result of:
           0.1344766 = score(doc=6685,freq=1.0), product of:
             0.18425716 = queryWeight, product of:
               1.2305655 = boost
               7.7848644 = idf(docFreq=49, maxDocs=44218)
               0.019233953 = queryNorm
             0.72983104 = fieldWeight in 6685, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.7848644 = idf(docFreq=49, maxDocs=44218)
               0.09375 = fieldNorm(doc=6685)
         0.06558835 = weight(abstract_txt:system in 6685) [ClassicSimilarity], result of:
           0.06558835 = score(doc=6685,freq=4.0), product of:
             0.1037285 = queryWeight, product of:
               1.5991981 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.019233953 = queryNorm
             0.6323078 = fieldWeight in 6685, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.09375 = fieldNorm(doc=6685)
         0.097941294 = weight(abstract_txt:text in 6685) [ClassicSimilarity], result of:
           0.097941294 = score(doc=6685,freq=3.0), product of:
             0.14915477 = queryWeight, product of:
               1.9176607 = boost
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.019233953 = queryNorm
             0.6566421 = fieldWeight in 6685, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.09375 = fieldNorm(doc=6685)
         0.14704037 = weight(abstract_txt:performance in 6685) [ClassicSimilarity], result of:
           0.14704037 = score(doc=6685,freq=3.0), product of:
             0.19556193 = queryWeight, product of:
               2.195813 = boost
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.019233953 = queryNorm
             0.7518865 = fieldWeight in 6685, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.09375 = fieldNorm(doc=6685)
       0.28 = coord(7/25)
   

5. Zhu, W.Z.; Allen, R.B.: Document clustering using the LSI subspace signature model (2013) 0.16

   0.15774637 = sum of:
     0.15774637 = product of:
       0.5633799 = sum of:
         0.018644283 = weight(abstract_txt:also in 690) [ClassicSimilarity], result of:
           0.018644283 = score(doc=690,freq=1.0), product of:
             0.070224375 = queryWeight, product of:
               1.0743642 = boost
               3.3983476 = idf(docFreq=4017, maxDocs=44218)
               0.019233953 = queryNorm
             0.2654959 = fieldWeight in 690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3983476 = idf(docFreq=4017, maxDocs=44218)
               0.078125 = fieldNorm(doc=690)
         0.07670074 = weight(abstract_txt:finds in 690) [ClassicSimilarity], result of:
           0.07670074 = score(doc=690,freq=1.0), product of:
             0.14310247 = queryWeight, product of:
               1.0844665 = boost
               6.8606052 = idf(docFreq=125, maxDocs=44218)
               0.019233953 = queryNorm
             0.53598475 = fieldWeight in 690, 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=690)
         0.11206384 = weight(abstract_txt:scalable in 690) [ClassicSimilarity], result of:
           0.11206384 = score(doc=690,freq=1.0), product of:
             0.18425716 = queryWeight, product of:
               1.2305655 = boost
               7.7848644 = idf(docFreq=49, maxDocs=44218)
               0.019233953 = queryNorm
             0.60819256 = fieldWeight in 690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.7848644 = idf(docFreq=49, maxDocs=44218)
               0.078125 = fieldNorm(doc=690)
         0.060181174 = weight(abstract_txt:model in 690) [ClassicSimilarity], result of:
           0.060181174 = score(doc=690,freq=4.0), product of:
             0.09662241 = queryWeight, product of:
               1.2602204 = boost
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.019233953 = queryNorm
             0.62284905 = fieldWeight in 690, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.986234 = idf(docFreq=2231, maxDocs=44218)
               0.078125 = fieldNorm(doc=690)
         0.04712203 = weight(abstract_txt:text in 690) [ClassicSimilarity], result of:
           0.04712203 = score(doc=690,freq=1.0), product of:
             0.14915477 = queryWeight, product of:
               1.9176607 = boost
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.019233953 = queryNorm
             0.3159271 = fieldWeight in 690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.0438666 = idf(docFreq=2106, maxDocs=44218)
               0.078125 = fieldNorm(doc=690)
         0.07074484 = weight(abstract_txt:performance in 690) [ClassicSimilarity], result of:
           0.07074484 = score(doc=690,freq=1.0), product of:
             0.19556193 = queryWeight, product of:
               2.195813 = boost
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.019233953 = queryNorm
             0.3617516 = fieldWeight in 690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.63042 = idf(docFreq=1171, maxDocs=44218)
               0.078125 = fieldNorm(doc=690)
         0.17792298 = weight(abstract_txt:reduction in 690) [ClassicSimilarity], result of:
           0.17792298 = score(doc=690,freq=1.0), product of:
             0.31594545 = queryWeight, product of:
               2.2788389 = boost
               7.208251 = idf(docFreq=88, maxDocs=44218)
               0.019233953 = queryNorm
             0.5631446 = fieldWeight in 690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.208251 = idf(docFreq=88, maxDocs=44218)
               0.078125 = fieldNorm(doc=690)
       0.28 = coord(7/25)