Document (#28341)

Author

Nelson, M.L.
Harrison, T.L.
Rocker, J.A.

Title

OAI and NASA's scientific and technical information

Source

Library hi tech. 21(2003) no.2, S.140-150

Year

2003

Abstract

The Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) is an evolving protocol and philosophy regarding interoperability for digital libraries (DLs). Previously, "distributed searching" models were popular for DL interoperability. However, experience has shown distributed searching systems across large numbers of DLs to be difficult to maintain in an Internet environment. The OAI-PMH is a move away from distributed searching, focusing on the arguably simpler model of "metadata harvesting". We detail NASA's involvement in defining and testing the OAI-PMH and experience to date with adapting existing NASA distributed searching DLs (such as the NASA Technical Report Server) to use the OAI-PMH and metadata harvesting. We discuss some of the entirely new DL projects that the OAI-PMH has made possible, such as the Technical Report Interchange Project. We explain the strategic importance of the OAI-PMH to the mission of NASA's Scientific and Technical Information Program.

Content

Vgl. auch unter: http://www.emeraldinsight.com/.

Theme

Metadaten

Object

OAI-PMH
NASA

Similar documents (author)

1. Harrison, S.E.: Chinese names in English (1992) 2.12

   2.1154413 = sum of:
     2.1154413 = product of:
       4.2308826 = sum of:
         4.2308826 = weight(author_txt:harrison in 3052) [ClassicSimilarity], result of:
           4.2308826 = score(doc=3052,freq=1.0), product of:
             0.76868224 = queryWeight, product of:
               1.0962479 = boost
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.079622164 = queryNorm
             5.504072 = fieldWeight in 3052, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.625 = fieldNorm(doc=3052)
       0.5 = coord(1/2)
   

2. Harrison, H.W.: Who, what, where, when and why? : Access to films through the catalog (1992) 2.12

   2.1154413 = sum of:
     2.1154413 = product of:
       4.2308826 = sum of:
         4.2308826 = weight(author_txt:harrison in 3287) [ClassicSimilarity], result of:
           4.2308826 = score(doc=3287,freq=1.0), product of:
             0.76868224 = queryWeight, product of:
               1.0962479 = boost
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.079622164 = queryNorm
             5.504072 = fieldWeight in 3287, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.625 = fieldNorm(doc=3287)
       0.5 = coord(1/2)
   

3. Harrison, L.: ¬A review of multimedia technology and dissemination system (1994) 2.12

   2.1154413 = sum of:
     2.1154413 = product of:
       4.2308826 = sum of:
         4.2308826 = weight(author_txt:harrison in 2808) [ClassicSimilarity], result of:
           4.2308826 = score(doc=2808,freq=1.0), product of:
             0.76868224 = queryWeight, product of:
               1.0962479 = boost
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.079622164 = queryNorm
             5.504072 = fieldWeight in 2808, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.625 = fieldNorm(doc=2808)
       0.5 = coord(1/2)
   

4. Harrison, H.W.: Cataloguing visual images : the view from LC (1996) 2.12

   2.1154413 = sum of:
     2.1154413 = product of:
       4.2308826 = sum of:
         4.2308826 = weight(author_txt:harrison in 7374) [ClassicSimilarity], result of:
           4.2308826 = score(doc=7374,freq=1.0), product of:
             0.76868224 = queryWeight, product of:
               1.0962479 = boost
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.079622164 = queryNorm
             5.504072 = fieldWeight in 7374, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.625 = fieldNorm(doc=7374)
       0.5 = coord(1/2)
   

5. Harrison, L.: Access to online learning : the role of the courseware authoring tool developer (2002) 2.12

   2.1154413 = sum of:
     2.1154413 = product of:
       4.2308826 = sum of:
         4.2308826 = weight(author_txt:harrison in 4789) [ClassicSimilarity], result of:
           4.2308826 = score(doc=4789,freq=1.0), product of:
             0.76868224 = queryWeight, product of:
               1.0962479 = boost
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.079622164 = queryNorm
             5.504072 = fieldWeight in 4789, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.625 = fieldNorm(doc=4789)
       0.5 = coord(1/2)
   

Similar documents (content)

1. Suleman, H.; Fox, E.A.: Leveraging OAI harvesting to disseminate theses (2003) 0.28

   0.28385818 = sum of:
     0.28385818 = product of:
       1.0137792 = sum of:
         0.060210053 = weight(abstract_txt:maintain in 4779) [ClassicSimilarity], result of:
           0.060210053 = score(doc=4779,freq=1.0), product of:
             0.11537934 = queryWeight, product of:
               1.0447363 = boost
               6.6796074 = idf(docFreq=150, maxDocs=44218)
               0.016533716 = queryNorm
             0.5218443 = fieldWeight in 4779, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6796074 = idf(docFreq=150, maxDocs=44218)
               0.078125 = fieldNorm(doc=4779)
         0.093709685 = weight(abstract_txt:interoperability in 4779) [ClassicSimilarity], result of:
           0.093709685 = score(doc=4779,freq=1.0), product of:
             0.19523081 = queryWeight, product of:
               1.9219046 = boost
               6.1439276 = idf(docFreq=257, maxDocs=44218)
               0.016533716 = queryNorm
             0.47999436 = fieldWeight in 4779, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1439276 = idf(docFreq=257, maxDocs=44218)
               0.078125 = fieldNorm(doc=4779)
         0.11901159 = weight(abstract_txt:protocol in 4779) [ClassicSimilarity], result of:
           0.11901159 = score(doc=4779,freq=1.0), product of:
             0.22895573 = queryWeight, product of:
               2.0812938 = boost
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.016533716 = queryNorm
             0.51980174 = fieldWeight in 4779, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.078125 = fieldNorm(doc=4779)
         0.14098077 = weight(abstract_txt:metadata in 4779) [ClassicSimilarity], result of:
           0.14098077 = score(doc=4779,freq=4.0), product of:
             0.18484558 = queryWeight, product of:
               2.2903814 = boost
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.016533716 = queryNorm
             0.76269484 = fieldWeight in 4779, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.078125 = fieldNorm(doc=4779)
         0.06356905 = weight(abstract_txt:searching in 4779) [ClassicSimilarity], result of:
           0.06356905 = score(doc=4779,freq=1.0), product of:
             0.18990329 = queryWeight, product of:
               2.6806424 = boost
               4.284727 = idf(docFreq=1655, maxDocs=44218)
               0.016533716 = queryNorm
             0.3347443 = fieldWeight in 4779, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.284727 = idf(docFreq=1655, maxDocs=44218)
               0.078125 = fieldNorm(doc=4779)
         0.38170335 = weight(abstract_txt:harvesting in 4779) [ClassicSimilarity], result of:
           0.38170335 = score(doc=4779,freq=2.0), product of:
             0.4524075 = queryWeight, product of:
               3.5831761 = boost
               7.636444 = idf(docFreq=57, maxDocs=44218)
               0.016533716 = queryNorm
             0.8437158 = fieldWeight in 4779, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.636444 = idf(docFreq=57, maxDocs=44218)
               0.078125 = fieldNorm(doc=4779)
         0.15459462 = weight(abstract_txt:distributed in 4779) [ClassicSimilarity], result of:
           0.15459462 = score(doc=4779,freq=1.0), product of:
             0.34342477 = queryWeight, product of:
               3.6048603 = boost
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.016533716 = queryNorm
             0.4501557 = fieldWeight in 4779, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.078125 = fieldNorm(doc=4779)
       0.28 = coord(7/25)
   

2. Simeoni, F.; Yakici, M.; Neely, S.; Crestani, F.: Metadata harvesting for content-based distributed information retrieval (2008) 0.21

   0.21394256 = sum of:
     0.21394256 = product of:
       0.89142734 = sum of:
         0.044017307 = weight(abstract_txt:move in 1336) [ClassicSimilarity], result of:
           0.044017307 = score(doc=1336,freq=1.0), product of:
             0.108651996 = queryWeight, product of:
               1.0138215 = boost
               6.481951 = idf(docFreq=183, maxDocs=44218)
               0.016533716 = queryNorm
             0.40512195 = fieldWeight in 1336, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.481951 = idf(docFreq=183, maxDocs=44218)
               0.0625 = fieldNorm(doc=1336)
         0.051103033 = weight(abstract_txt:report in 1336) [ClassicSimilarity], result of:
           0.051103033 = score(doc=1336,freq=1.0), product of:
             0.15121557 = queryWeight, product of:
               1.6914372 = boost
               5.4071717 = idf(docFreq=538, maxDocs=44218)
               0.016533716 = queryNorm
             0.33794823 = fieldWeight in 1336, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4071717 = idf(docFreq=538, maxDocs=44218)
               0.0625 = fieldNorm(doc=1336)
         0.13464624 = weight(abstract_txt:protocol in 1336) [ClassicSimilarity], result of:
           0.13464624 = score(doc=1336,freq=2.0), product of:
             0.22895573 = queryWeight, product of:
               2.0812938 = boost
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.016533716 = queryNorm
             0.5880885 = fieldWeight in 1336, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.0625 = fieldNorm(doc=1336)
         0.07975077 = weight(abstract_txt:metadata in 1336) [ClassicSimilarity], result of:
           0.07975077 = score(doc=1336,freq=2.0), product of:
             0.18484558 = queryWeight, product of:
               2.2903814 = boost
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.016533716 = queryNorm
             0.43144536 = fieldWeight in 1336, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.0625 = fieldNorm(doc=1336)
         0.3053627 = weight(abstract_txt:harvesting in 1336) [ClassicSimilarity], result of:
           0.3053627 = score(doc=1336,freq=2.0), product of:
             0.4524075 = queryWeight, product of:
               3.5831761 = boost
               7.636444 = idf(docFreq=57, maxDocs=44218)
               0.016533716 = queryNorm
             0.67497265 = fieldWeight in 1336, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.636444 = idf(docFreq=57, maxDocs=44218)
               0.0625 = fieldNorm(doc=1336)
         0.27654725 = weight(abstract_txt:distributed in 1336) [ClassicSimilarity], result of:
           0.27654725 = score(doc=1336,freq=5.0), product of:
             0.34342477 = queryWeight, product of:
               3.6048603 = boost
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.016533716 = queryNorm
             0.805263 = fieldWeight in 1336, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.0625 = fieldNorm(doc=1336)
       0.24 = coord(6/25)
   

3. Blanchi, C.; Petrone, J.: Distributed interoperable metadata registry (2001) 0.20

   0.19969204 = sum of:
     0.19969204 = product of:
       0.8320502 = sum of:
         0.0633622 = weight(abstract_txt:defining in 1228) [ClassicSimilarity], result of:
           0.0633622 = score(doc=1228,freq=1.0), product of:
             0.10570967 = queryWeight, product of:
               6.3935823 = idf(docFreq=200, maxDocs=44218)
               0.016533716 = queryNorm
             0.5993984 = fieldWeight in 1228, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.3935823 = idf(docFreq=200, maxDocs=44218)
               0.09375 = fieldNorm(doc=1228)
         0.02756451 = weight(abstract_txt:such in 1228) [ClassicSimilarity], result of:
           0.02756451 = score(doc=1228,freq=2.0), product of:
             0.06069153 = queryWeight, product of:
               1.0715728 = boost
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.016533716 = queryNorm
             0.45417392 = fieldWeight in 1228, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.09375 = fieldNorm(doc=1228)
         0.1590306 = weight(abstract_txt:interoperability in 1228) [ClassicSimilarity], result of:
           0.1590306 = score(doc=1228,freq=2.0), product of:
             0.19523081 = queryWeight, product of:
               1.9219046 = boost
               6.1439276 = idf(docFreq=257, maxDocs=44218)
               0.016533716 = queryNorm
             0.8145774 = fieldWeight in 1228, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.1439276 = idf(docFreq=257, maxDocs=44218)
               0.09375 = fieldNorm(doc=1228)
         0.1428139 = weight(abstract_txt:protocol in 1228) [ClassicSimilarity], result of:
           0.1428139 = score(doc=1228,freq=1.0), product of:
             0.22895573 = queryWeight, product of:
               2.0812938 = boost
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.016533716 = queryNorm
             0.6237621 = fieldWeight in 1228, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.09375 = fieldNorm(doc=1228)
         0.2537654 = weight(abstract_txt:metadata in 1228) [ClassicSimilarity], result of:
           0.2537654 = score(doc=1228,freq=9.0), product of:
             0.18484558 = queryWeight, product of:
               2.2903814 = boost
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.016533716 = queryNorm
             1.3728508 = fieldWeight in 1228, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.09375 = fieldNorm(doc=1228)
         0.18551354 = weight(abstract_txt:distributed in 1228) [ClassicSimilarity], result of:
           0.18551354 = score(doc=1228,freq=1.0), product of:
             0.34342477 = queryWeight, product of:
               3.6048603 = boost
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.016533716 = queryNorm
             0.5401868 = fieldWeight in 1228, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.09375 = fieldNorm(doc=1228)
       0.24 = coord(6/25)
   

4. Haslhofer, B.: ¬A Web-based mapping technique for establishing metadata interoperability (2008) 0.16

   0.16300084 = sum of:
     0.16300084 = product of:
       0.58214587 = sum of:
         0.0081212735 = weight(abstract_txt:such in 3173) [ClassicSimilarity], result of:
           0.0081212735 = score(doc=3173,freq=1.0), product of:
             0.06069153 = queryWeight, product of:
               1.0715728 = boost
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.016533716 = queryNorm
             0.1338123 = fieldWeight in 3173, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.0390625 = fieldNorm(doc=3173)
         0.081154965 = weight(abstract_txt:interoperability in 3173) [ClassicSimilarity], result of:
           0.081154965 = score(doc=3173,freq=3.0), product of:
             0.19523081 = queryWeight, product of:
               1.9219046 = boost
               6.1439276 = idf(docFreq=257, maxDocs=44218)
               0.016533716 = queryNorm
             0.4156873 = fieldWeight in 3173, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.1439276 = idf(docFreq=257, maxDocs=44218)
               0.0390625 = fieldNorm(doc=3173)
         0.059505794 = weight(abstract_txt:protocol in 3173) [ClassicSimilarity], result of:
           0.059505794 = score(doc=3173,freq=1.0), product of:
             0.22895573 = queryWeight, product of:
               2.0812938 = boost
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.016533716 = queryNorm
             0.25990087 = fieldWeight in 3173, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.0390625 = fieldNorm(doc=3173)
         0.14953269 = weight(abstract_txt:metadata in 3173) [ClassicSimilarity], result of:
           0.14953269 = score(doc=3173,freq=18.0), product of:
             0.18484558 = queryWeight, product of:
               2.2903814 = boost
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.016533716 = queryNorm
             0.8089601 = fieldWeight in 3173, product of:
               4.2426405 = tf(freq=18.0), with freq of:
                 18.0 = termFreq=18.0
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.0390625 = fieldNorm(doc=3173)
         0.071581274 = weight(abstract_txt:technical in 3173) [ClassicSimilarity], result of:
           0.071581274 = score(doc=3173,freq=2.0), product of:
             0.25896734 = queryWeight, product of:
               3.130366 = boost
               5.0035634 = idf(docFreq=806, maxDocs=44218)
               0.016533716 = queryNorm
             0.27641043 = fieldWeight in 3173, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.0035634 = idf(docFreq=806, maxDocs=44218)
               0.0390625 = fieldNorm(doc=3173)
         0.13495253 = weight(abstract_txt:harvesting in 3173) [ClassicSimilarity], result of:
           0.13495253 = score(doc=3173,freq=1.0), product of:
             0.4524075 = queryWeight, product of:
               3.5831761 = boost
               7.636444 = idf(docFreq=57, maxDocs=44218)
               0.016533716 = queryNorm
             0.2982986 = fieldWeight in 3173, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.636444 = idf(docFreq=57, maxDocs=44218)
               0.0390625 = fieldNorm(doc=3173)
         0.07729731 = weight(abstract_txt:distributed in 3173) [ClassicSimilarity], result of:
           0.07729731 = score(doc=3173,freq=1.0), product of:
             0.34342477 = queryWeight, product of:
               3.6048603 = boost
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.016533716 = queryNorm
             0.22507785 = fieldWeight in 3173, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.0390625 = fieldNorm(doc=3173)
       0.28 = coord(7/25)
   

5. Van de Sompel, H.; Young, J.A.; Hickey, T.B.: Using the OAI-PMH ... differently (2003) 0.16

   0.15926006 = sum of:
     0.15926006 = product of:
       0.7963003 = sum of:
         0.012994036 = weight(abstract_txt:such in 1191) [ClassicSimilarity], result of:
           0.012994036 = score(doc=1191,freq=1.0), product of:
             0.06069153 = queryWeight, product of:
               1.0715728 = boost
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.016533716 = queryNorm
             0.21409966 = fieldWeight in 1191, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.0625 = fieldNorm(doc=1191)
         0.16490728 = weight(abstract_txt:protocol in 1191) [ClassicSimilarity], result of:
           0.16490728 = score(doc=1191,freq=3.0), product of:
             0.22895573 = queryWeight, product of:
               2.0812938 = boost
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.016533716 = queryNorm
             0.72025836 = fieldWeight in 1191, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.653462 = idf(docFreq=154, maxDocs=44218)
               0.0625 = fieldNorm(doc=1191)
         0.1381324 = weight(abstract_txt:metadata in 1191) [ClassicSimilarity], result of:
           0.1381324 = score(doc=1191,freq=6.0), product of:
             0.18484558 = queryWeight, product of:
               2.2903814 = boost
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.016533716 = queryNorm
             0.7472853 = fieldWeight in 1191, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.881247 = idf(docFreq=911, maxDocs=44218)
               0.0625 = fieldNorm(doc=1191)
         0.3053627 = weight(abstract_txt:harvesting in 1191) [ClassicSimilarity], result of:
           0.3053627 = score(doc=1191,freq=2.0), product of:
             0.4524075 = queryWeight, product of:
               3.5831761 = boost
               7.636444 = idf(docFreq=57, maxDocs=44218)
               0.016533716 = queryNorm
             0.67497265 = fieldWeight in 1191, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.636444 = idf(docFreq=57, maxDocs=44218)
               0.0625 = fieldNorm(doc=1191)
         0.17490384 = weight(abstract_txt:distributed in 1191) [ClassicSimilarity], result of:
           0.17490384 = score(doc=1191,freq=2.0), product of:
             0.34342477 = queryWeight, product of:
               3.6048603 = boost
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.016533716 = queryNorm
             0.509293 = fieldWeight in 1191, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.761993 = idf(docFreq=377, maxDocs=44218)
               0.0625 = fieldNorm(doc=1191)
       0.2 = coord(5/25)