Document (#5643)

Author

Bell, T.C.
Moffat, A.
Nevill-Manning, C.G.
Witten, I.H.
Zobel, J.

Title

Data compression in full-text retrieval system

Source

Journal of the American Society for Information Science. 44(1993) no.9, S.508-531

Year

1993

Abstract

When data compression is applied to full-text retrieval systems, intricate relationships emerge between the amount of compression, access speed, and computing resources required. We propose compression methods, and explore corresponding tradeoffs, for all components of static full-text systems such as text databases on CD-ROM. These components include lexical indexes, and the mein text itself. Results are reported on the application of the methods to several substantial full-text databases, and show that a large, unindexed text can be stored, along with indexes that facilitate fast searching, in less than half its original size - at some appreciable cost in primary memory requirements

Similar documents (author)

1. Witten, I.H.; Moffat, A.; Bell, T.C.: Managing gigabytes : compressing and indexing documents and images (1994) 2.61

   2.609745 = sum of:
     2.609745 = product of:
       4.349575 = sum of:
         0.97561723 = weight(author_txt:bell in 4083) [ClassicSimilarity], result of:
           0.97561723 = score(doc=4083,freq=1.0), product of:
             0.33136415 = queryWeight, product of:
               7.85132 = idf(docFreq=46, maxDocs=44421)
               0.042204898 = queryNorm
             2.9442449 = fieldWeight in 4083, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.85132 = idf(docFreq=46, maxDocs=44421)
               0.375 = fieldNorm(doc=4083)
         1.5781862 = weight(author_txt:witten in 4083) [ClassicSimilarity], result of:
           1.5781862 = score(doc=4083,freq=1.0), product of:
             0.45662326 = queryWeight, product of:
               1.1738869 = boost
               9.216561 = idf(docFreq=11, maxDocs=44421)
               0.042204898 = queryNorm
             3.4562106 = fieldWeight in 4083, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.216561 = idf(docFreq=11, maxDocs=44421)
               0.375 = fieldNorm(doc=4083)
         1.7957715 = weight(author_txt:moffat in 4083) [ClassicSimilarity], result of:
           1.7957715 = score(doc=4083,freq=1.0), product of:
             0.49768353 = queryWeight, product of:
               1.2255298 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.042204898 = queryNorm
             3.60826 = fieldWeight in 4083, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.375 = fieldNorm(doc=4083)
       0.6 = coord(3/5)
   

2. Moffat, A.; Zobel, J.: Self-indexing inverted files for fast text retrieval (1996) 1.85

   1.8503901 = sum of:
     1.8503901 = product of:
       4.625975 = sum of:
         2.2316132 = weight(author_txt:zobel in 1009) [ClassicSimilarity], result of:
           2.2316132 = score(doc=1009,freq=1.0), product of:
             0.47486773 = queryWeight, product of:
               1.1971086 = boost
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.042204898 = queryNorm
             4.6994414 = fieldWeight in 1009, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.398883 = idf(docFreq=9, maxDocs=44421)
               0.5 = fieldNorm(doc=1009)
         2.394362 = weight(author_txt:moffat in 1009) [ClassicSimilarity], result of:
           2.394362 = score(doc=1009,freq=1.0), product of:
             0.49768353 = queryWeight, product of:
               1.2255298 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.042204898 = queryNorm
             4.811013 = fieldWeight in 1009, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.5 = fieldNorm(doc=1009)
       0.4 = coord(2/5)
   

3. Moffat, A.; Bell, T.A.H.: In situ generation of compressed inverted files (1995) 1.48

   1.478074 = sum of:
     1.478074 = product of:
       3.695185 = sum of:
         1.300823 = weight(author_txt:bell in 2716) [ClassicSimilarity], result of:
           1.300823 = score(doc=2716,freq=1.0), product of:
             0.33136415 = queryWeight, product of:
               7.85132 = idf(docFreq=46, maxDocs=44421)
               0.042204898 = queryNorm
             3.92566 = fieldWeight in 2716, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.85132 = idf(docFreq=46, maxDocs=44421)
               0.5 = fieldNorm(doc=2716)
         2.394362 = weight(author_txt:moffat in 2716) [ClassicSimilarity], result of:
           2.394362 = score(doc=2716,freq=1.0), product of:
             0.49768353 = queryWeight, product of:
               1.2255298 = boost
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.042204898 = queryNorm
             4.811013 = fieldWeight in 2716, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.622026 = idf(docFreq=7, maxDocs=44421)
               0.5 = fieldNorm(doc=2716)
       0.4 = coord(2/5)
   

4. Manning, R.W.: ¬The Anglo-American Cataloguing Rules and their future (1999) 0.53

   0.526062 = sum of:
     0.526062 = product of:
       2.63031 = sum of:
         2.63031 = weight(author_txt:manning in 809) [ClassicSimilarity], result of:
           2.63031 = score(doc=809,freq=1.0), product of:
             0.45662326 = queryWeight, product of:
               1.1738869 = boost
               9.216561 = idf(docFreq=11, maxDocs=44421)
               0.042204898 = queryNorm
             5.7603507 = fieldWeight in 809, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.216561 = idf(docFreq=11, maxDocs=44421)
               0.625 = fieldNorm(doc=809)
       0.2 = coord(1/5)
   

5. Manning, R.W.: ¬The Anglo American Cataloguing Rules and their future (2000) 0.53

   0.526062 = sum of:
     0.526062 = product of:
       2.63031 = sum of:
         2.63031 = weight(author_txt:manning in 314) [ClassicSimilarity], result of:
           2.63031 = score(doc=314,freq=1.0), product of:
             0.45662326 = queryWeight, product of:
               1.1738869 = boost
               9.216561 = idf(docFreq=11, maxDocs=44421)
               0.042204898 = queryNorm
             5.7603507 = fieldWeight in 314, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.216561 = idf(docFreq=11, maxDocs=44421)
               0.625 = fieldNorm(doc=314)
       0.2 = coord(1/5)
   

Similar documents (content)

1. Wittan, I.H.; Bell, T.C.; Nevill, C.G.: Indexing and compressing full-text databases for CD-ROM (1991) 0.42

   0.41548872 = sum of:
     0.41548872 = product of:
       1.2984023 = sum of:
         0.054716878 = weight(abstract_txt:stored in 4827) [ClassicSimilarity], result of:
           0.054716878 = score(doc=4827,freq=1.0), product of:
             0.11013703 = queryWeight, product of:
               1.0790399 = boost
               6.3591332 = idf(docFreq=208, maxDocs=44421)
               0.016050845 = queryNorm
             0.49680728 = fieldWeight in 4827, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.3591332 = idf(docFreq=208, maxDocs=44421)
               0.078125 = fieldNorm(doc=4827)
         0.06088088 = weight(abstract_txt:speed in 4827) [ClassicSimilarity], result of:
           0.06088088 = score(doc=4827,freq=1.0), product of:
             0.11826052 = queryWeight, product of:
               1.1181259 = boost
               6.58948 = idf(docFreq=165, maxDocs=44421)
               0.016050845 = queryNorm
             0.5148031 = fieldWeight in 4827, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.58948 = idf(docFreq=165, maxDocs=44421)
               0.078125 = fieldNorm(doc=4827)
         0.030272685 = weight(abstract_txt:methods in 4827) [ClassicSimilarity], result of:
           0.030272685 = score(doc=4827,freq=1.0), product of:
             0.093518265 = queryWeight, product of:
               1.4061579 = boost
               4.1434727 = idf(docFreq=1915, maxDocs=44421)
               0.016050845 = queryNorm
             0.3237088 = fieldWeight in 4827, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1434727 = idf(docFreq=1915, maxDocs=44421)
               0.078125 = fieldNorm(doc=4827)
         0.03659545 = weight(abstract_txt:databases in 4827) [ClassicSimilarity], result of:
           0.03659545 = score(doc=4827,freq=1.0), product of:
             0.106124066 = queryWeight, product of:
               1.4979343 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.016050845 = queryNorm
             0.34483647 = fieldWeight in 4827, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.078125 = fieldNorm(doc=4827)
         0.13905652 = weight(abstract_txt:indexes in 4827) [ClassicSimilarity], result of:
           0.13905652 = score(doc=4827,freq=3.0), product of:
             0.17917728 = queryWeight, product of:
               1.9463786 = boost
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.016050845 = queryNorm
             0.7760834 = fieldWeight in 4827, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.735321 = idf(docFreq=389, maxDocs=44421)
               0.078125 = fieldNorm(doc=4827)
         0.14378408 = weight(abstract_txt:full in 4827) [ClassicSimilarity], result of:
           0.14378408 = score(doc=4827,freq=2.0), product of:
             0.2642427 = queryWeight, product of:
               3.342738 = boost
               4.9249606 = idf(docFreq=876, maxDocs=44421)
               0.016050845 = queryNorm
             0.5441364 = fieldWeight in 4827, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.9249606 = idf(docFreq=876, maxDocs=44421)
               0.078125 = fieldNorm(doc=4827)
         0.196555 = weight(abstract_txt:text in 4827) [ClassicSimilarity], result of:
           0.196555 = score(doc=4827,freq=4.0), product of:
             0.3113063 = queryWeight, product of:
               4.799697 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.016050845 = queryNorm
             0.6313878 = fieldWeight in 4827, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.078125 = fieldNorm(doc=4827)
         0.6365408 = weight(abstract_txt:compression in 4827) [ClassicSimilarity], result of:
           0.6365408 = score(doc=4827,freq=3.0), product of:
             0.62237126 = queryWeight, product of:
               5.1300974 = boost
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.016050845 = queryNorm
             1.022767 = fieldWeight in 4827, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.078125 = fieldNorm(doc=4827)
       0.32 = coord(8/25)
   

2. Cannane, A.; Williams, H.E.: General-purpose compression for efficient retrieval (2001) 0.33

   0.326953 = sum of:
     0.326953 = product of:
       1.3623042 = sum of:
         0.054716878 = weight(abstract_txt:stored in 6705) [ClassicSimilarity], result of:
           0.054716878 = score(doc=6705,freq=1.0), product of:
             0.11013703 = queryWeight, product of:
               1.0790399 = boost
               6.3591332 = idf(docFreq=208, maxDocs=44421)
               0.016050845 = queryNorm
             0.49680728 = fieldWeight in 6705, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.3591332 = idf(docFreq=208, maxDocs=44421)
               0.078125 = fieldNorm(doc=6705)
         0.015717318 = weight(abstract_txt:data in 6705) [ClassicSimilarity], result of:
           0.015717318 = score(doc=6705,freq=1.0), product of:
             0.060410827 = queryWeight, product of:
               1.1301686 = boost
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.016050845 = queryNorm
             0.26017386 = fieldWeight in 6705, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.078125 = fieldNorm(doc=6705)
         0.017880687 = weight(abstract_txt:retrieval in 6705) [ClassicSimilarity], result of:
           0.017880687 = score(doc=6705,freq=1.0), product of:
             0.06583426 = queryWeight, product of:
               1.1798093 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.016050845 = queryNorm
             0.27160156 = fieldWeight in 6705, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.078125 = fieldNorm(doc=6705)
         0.0731909 = weight(abstract_txt:databases in 6705) [ClassicSimilarity], result of:
           0.0731909 = score(doc=6705,freq=4.0), product of:
             0.106124066 = queryWeight, product of:
               1.4979343 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.016050845 = queryNorm
             0.68967295 = fieldWeight in 6705, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.078125 = fieldNorm(doc=6705)
         0.0982775 = weight(abstract_txt:text in 6705) [ClassicSimilarity], result of:
           0.0982775 = score(doc=6705,freq=1.0), product of:
             0.3113063 = queryWeight, product of:
               4.799697 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.016050845 = queryNorm
             0.3156939 = fieldWeight in 6705, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.078125 = fieldNorm(doc=6705)
         1.102521 = weight(abstract_txt:compression in 6705) [ClassicSimilarity], result of:
           1.102521 = score(doc=6705,freq=9.0), product of:
             0.62237126 = queryWeight, product of:
               5.1300974 = boost
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.016050845 = queryNorm
             1.7714844 = fieldWeight in 6705, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.078125 = fieldNorm(doc=6705)
       0.24 = coord(6/25)
   

3. Koshman, S.; Heidorn, B.; Kim, H.: ACM SIGIR '93 provides information retrieval roundup (1993) 0.30

   0.3035737 = sum of:
     0.3035737 = product of:
       1.0841918 = sum of:
         0.07407035 = weight(abstract_txt:computing in 6692) [ClassicSimilarity], result of:
           0.07407035 = score(doc=6692,freq=1.0), product of:
             0.0985225 = queryWeight, product of:
               1.02056 = boost
               6.014492 = idf(docFreq=294, maxDocs=44421)
               0.016050845 = queryNorm
             0.7518115 = fieldWeight in 6692, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.014492 = idf(docFreq=294, maxDocs=44421)
               0.125 = fieldNorm(doc=6692)
         0.02514771 = weight(abstract_txt:data in 6692) [ClassicSimilarity], result of:
           0.02514771 = score(doc=6692,freq=1.0), product of:
             0.060410827 = queryWeight, product of:
               1.1301686 = boost
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.016050845 = queryNorm
             0.41627818 = fieldWeight in 6692, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.125 = fieldNorm(doc=6692)
         0.0286091 = weight(abstract_txt:retrieval in 6692) [ClassicSimilarity], result of:
           0.0286091 = score(doc=6692,freq=1.0), product of:
             0.06583426 = queryWeight, product of:
               1.1798093 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.016050845 = queryNorm
             0.4345625 = fieldWeight in 6692, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.125 = fieldNorm(doc=6692)
         0.048436295 = weight(abstract_txt:methods in 6692) [ClassicSimilarity], result of:
           0.048436295 = score(doc=6692,freq=1.0), product of:
             0.093518265 = queryWeight, product of:
               1.4061579 = boost
               4.1434727 = idf(docFreq=1915, maxDocs=44421)
               0.016050845 = queryNorm
             0.5179341 = fieldWeight in 6692, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1434727 = idf(docFreq=1915, maxDocs=44421)
               0.125 = fieldNorm(doc=6692)
         0.16267312 = weight(abstract_txt:full in 6692) [ClassicSimilarity], result of:
           0.16267312 = score(doc=6692,freq=1.0), product of:
             0.2642427 = queryWeight, product of:
               3.342738 = boost
               4.9249606 = idf(docFreq=876, maxDocs=44421)
               0.016050845 = queryNorm
             0.6156201 = fieldWeight in 6692, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9249606 = idf(docFreq=876, maxDocs=44421)
               0.125 = fieldNorm(doc=6692)
         0.15724401 = weight(abstract_txt:text in 6692) [ClassicSimilarity], result of:
           0.15724401 = score(doc=6692,freq=1.0), product of:
             0.3113063 = queryWeight, product of:
               4.799697 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.016050845 = queryNorm
             0.50511026 = fieldWeight in 6692, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.125 = fieldNorm(doc=6692)
         0.58801115 = weight(abstract_txt:compression in 6692) [ClassicSimilarity], result of:
           0.58801115 = score(doc=6692,freq=1.0), product of:
             0.62237126 = queryWeight, product of:
               5.1300974 = boost
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.016050845 = queryNorm
             0.9447916 = fieldWeight in 6692, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.125 = fieldNorm(doc=6692)
       0.28 = coord(7/25)
   

4. Tenopir, C.: Full-text retrieval : systems and files (1994) 0.25

   0.2531394 = sum of:
     0.2531394 = product of:
       1.0547476 = sum of:
         0.07876047 = weight(abstract_txt:half in 2492) [ClassicSimilarity], result of:
           0.07876047 = score(doc=2492,freq=1.0), product of:
             0.11219478 = queryWeight, product of:
               1.0890734 = boost
               6.418264 = idf(docFreq=196, maxDocs=44421)
               0.016050845 = queryNorm
             0.70199764 = fieldWeight in 2492, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.418264 = idf(docFreq=196, maxDocs=44421)
               0.109375 = fieldNorm(doc=2492)
         0.02364817 = weight(abstract_txt:systems in 2492) [ClassicSimilarity], result of:
           0.02364817 = score(doc=2492,freq=1.0), product of:
             0.06338339 = queryWeight, product of:
               1.1576401 = boost
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.016050845 = queryNorm
             0.37309727 = fieldWeight in 2492, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.109375 = fieldNorm(doc=2492)
         0.025032964 = weight(abstract_txt:retrieval in 2492) [ClassicSimilarity], result of:
           0.025032964 = score(doc=2492,freq=1.0), product of:
             0.06583426 = queryWeight, product of:
               1.1798093 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.016050845 = queryNorm
             0.3802422 = fieldWeight in 2492, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.109375 = fieldNorm(doc=2492)
         0.13555144 = weight(abstract_txt:databases in 2492) [ClassicSimilarity], result of:
           0.13555144 = score(doc=2492,freq=7.0), product of:
             0.106124066 = queryWeight, product of:
               1.4979343 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.016050845 = queryNorm
             1.2772921 = fieldWeight in 2492, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.109375 = fieldNorm(doc=2492)
         0.4025954 = weight(abstract_txt:full in 2492) [ClassicSimilarity], result of:
           0.4025954 = score(doc=2492,freq=8.0), product of:
             0.2642427 = queryWeight, product of:
               3.342738 = boost
               4.9249606 = idf(docFreq=876, maxDocs=44421)
               0.016050845 = queryNorm
             1.5235819 = fieldWeight in 2492, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               4.9249606 = idf(docFreq=876, maxDocs=44421)
               0.109375 = fieldNorm(doc=2492)
         0.38915908 = weight(abstract_txt:text in 2492) [ClassicSimilarity], result of:
           0.38915908 = score(doc=2492,freq=8.0), product of:
             0.3113063 = queryWeight, product of:
               4.799697 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.016050845 = queryNorm
             1.2500842 = fieldWeight in 2492, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.109375 = fieldNorm(doc=2492)
       0.24 = coord(6/25)
   

5. Liu, L.-J.; Shen, X.-B.; Zou, X.-C.: ¬An improved fast encoding algorithm for vector quantization (2004) 0.24

   0.2387349 = sum of:
     0.2387349 = product of:
       0.85262465 = sum of:
         0.034841653 = weight(abstract_txt:size in 3067) [ClassicSimilarity], result of:
           0.034841653 = score(doc=3067,freq=1.0), product of:
             0.094592854 = queryWeight, product of:
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.016050845 = queryNorm
             0.36833283 = fieldWeight in 3067, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8933253 = idf(docFreq=332, maxDocs=44421)
               0.0625 = fieldNorm(doc=3067)
         0.04500598 = weight(abstract_txt:half in 3067) [ClassicSimilarity], result of:
           0.04500598 = score(doc=3067,freq=1.0), product of:
             0.11219478 = queryWeight, product of:
               1.0890734 = boost
               6.418264 = idf(docFreq=196, maxDocs=44421)
               0.016050845 = queryNorm
             0.4011415 = fieldWeight in 3067, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.418264 = idf(docFreq=196, maxDocs=44421)
               0.0625 = fieldNorm(doc=3067)
         0.06887885 = weight(abstract_txt:speed in 3067) [ClassicSimilarity], result of:
           0.06887885 = score(doc=3067,freq=2.0), product of:
             0.11826052 = queryWeight, product of:
               1.1181259 = boost
               6.58948 = idf(docFreq=165, maxDocs=44421)
               0.016050845 = queryNorm
             0.5824332 = fieldWeight in 3067, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.58948 = idf(docFreq=165, maxDocs=44421)
               0.0625 = fieldNorm(doc=3067)
         0.0488388 = weight(abstract_txt:memory in 3067) [ClassicSimilarity], result of:
           0.0488388 = score(doc=3067,freq=1.0), product of:
             0.11847748 = queryWeight, product of:
               1.1191511 = boost
               6.595522 = idf(docFreq=164, maxDocs=44421)
               0.016050845 = queryNorm
             0.41222012 = fieldWeight in 3067, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.595522 = idf(docFreq=164, maxDocs=44421)
               0.0625 = fieldNorm(doc=3067)
         0.030799529 = weight(abstract_txt:data in 3067) [ClassicSimilarity], result of:
           0.030799529 = score(doc=3067,freq=6.0), product of:
             0.060410827 = queryWeight, product of:
               1.1301686 = boost
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.016050845 = queryNorm
             0.5098346 = fieldWeight in 3067, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.3302255 = idf(docFreq=4320, maxDocs=44421)
               0.0625 = fieldNorm(doc=3067)
         0.11502726 = weight(abstract_txt:full in 3067) [ClassicSimilarity], result of:
           0.11502726 = score(doc=3067,freq=2.0), product of:
             0.2642427 = queryWeight, product of:
               3.342738 = boost
               4.9249606 = idf(docFreq=876, maxDocs=44421)
               0.016050845 = queryNorm
             0.4353091 = fieldWeight in 3067, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.9249606 = idf(docFreq=876, maxDocs=44421)
               0.0625 = fieldNorm(doc=3067)
         0.5092326 = weight(abstract_txt:compression in 3067) [ClassicSimilarity], result of:
           0.5092326 = score(doc=3067,freq=3.0), product of:
             0.62237126 = queryWeight, product of:
               5.1300974 = boost
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.016050845 = queryNorm
             0.8182135 = fieldWeight in 3067, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.558333 = idf(docFreq=62, maxDocs=44421)
               0.0625 = fieldNorm(doc=3067)
       0.28 = coord(7/25)