Document (#25514)

Author

Huang, Y.-L.

Title

¬A theoretic and empirical research of cluster indexing for Mandarine Chinese full text document

Source

Bulletin of library and information science. 1998, no.24, S.44-68

Year

1998

Abstract

Since most popular commercialized systems for full text retrieval are designed with full text scaning and Boolean logic query mode, these systems use an oversimplified relationship between the indexing form and the content of document. Reports the use of Singular Value Decomposition (SVD) to develop a Cluster Indexing Model (CIM) based on a Vector Space Model (VSM) in orer to explore the index theory of cluster indexing for chinese full text documents. From a series of experiments, it was found that the indexing performance of CIM is better than traditional VSM, and has almost equivalent effectiveness of the authority control of index terms

Footnote

In Chinesisch

Theme

Automatisches Klassifizieren
Volltextretrieval

Similar documents (author)

1. Huang, G.W.: Accessing information in an information society (1989) 4.49

   4.487299 = sum of:
     4.487299 = weight(author_txt:huang in 2565) [ClassicSimilarity], result of:
       4.487299 = score(doc=2565,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.13928199 = queryNorm
         4.4872994 = fieldWeight in 2565, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.625 = fieldNorm(doc=2565)
   

2. Huang, X.: Applying a generic function-based topical relevance typology to structure clinical questions and answers (2013) 4.49

   4.487299 = sum of:
     4.487299 = weight(author_txt:huang in 1530) [ClassicSimilarity], result of:
       4.487299 = score(doc=1530,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.13928199 = queryNorm
         4.4872994 = fieldWeight in 1530, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.625 = fieldNorm(doc=1530)
   

3. Huang, J. Xiangji => Xiangji Huang, J.: 3.81

   3.8075993 = sum of:
     3.8075993 = weight(author_txt:huang in 8234) [ClassicSimilarity], result of:
       3.8075993 = score(doc=8234,freq=2.0), product of:
         0.99999994 = queryWeight, product of:
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.13928199 = queryNorm
         3.8075995 = fieldWeight in 8234, product of:
           1.4142135 = tf(freq=2.0), with freq of:
             2.0 = termFreq=2.0
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.375 = fieldNorm(doc=8234)
   

4. Huang, M.-H.: Developing an ideal online thesaurus display format (1994) 3.59

   3.5898392 = sum of:
     3.5898392 = weight(author_txt:huang in 4098) [ClassicSimilarity], result of:
       3.5898392 = score(doc=4098,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.13928199 = queryNorm
         3.5898395 = fieldWeight in 4098, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.5 = fieldNorm(doc=4098)
   

5. Huang, M.-h.: End-users' searching behaviour : changes in search type over time (1996) 3.59

   3.5898392 = sum of:
     3.5898392 = weight(author_txt:huang in 5196) [ClassicSimilarity], result of:
       3.5898392 = score(doc=5196,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.13928199 = queryNorm
         3.5898395 = fieldWeight in 5196, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.179679 = idf(docFreq=91, maxDocs=44421)
           0.5 = fieldNorm(doc=5196)
   

Similar documents (content)

1. Zhu, W.Z.; Allen, R.B.: Document clustering using the LSI subspace signature model (2013) 0.30

   0.300451 = sum of:
     0.300451 = product of:
       0.83458614 = sum of:
         0.041635893 = weight(abstract_txt:experiments in 1690) [ClassicSimilarity], result of:
           0.041635893 = score(doc=1690,freq=1.0), product of:
             0.10008739 = queryWeight, product of:
               1.0236578 = boost
               5.324741 = idf(docFreq=587, maxDocs=44421)
               0.018362258 = queryNorm
             0.4159954 = fieldWeight in 1690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.324741 = idf(docFreq=587, maxDocs=44421)
               0.078125 = fieldNorm(doc=1690)
         0.04326661 = weight(abstract_txt:space in 1690) [ClassicSimilarity], result of:
           0.04326661 = score(doc=1690,freq=1.0), product of:
             0.10268398 = queryWeight, product of:
               1.0368513 = boost
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.018362258 = queryNorm
             0.42135698 = fieldWeight in 1690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.078125 = fieldNorm(doc=1690)
         0.07642792 = weight(abstract_txt:vector in 1690) [ClassicSimilarity], result of:
           0.07642792 = score(doc=1690,freq=1.0), product of:
             0.15004982 = queryWeight, product of:
               1.2533803 = boost
               6.519684 = idf(docFreq=177, maxDocs=44421)
               0.018362258 = queryNorm
             0.5093503 = fieldWeight in 1690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.519684 = idf(docFreq=177, maxDocs=44421)
               0.078125 = fieldNorm(doc=1690)
         0.13686742 = weight(abstract_txt:decomposition in 1690) [ClassicSimilarity], result of:
           0.13686742 = score(doc=1690,freq=1.0), product of:
             0.22127593 = queryWeight, product of:
               1.5220615 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.018362258 = queryNorm
             0.6185373 = fieldWeight in 1690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.078125 = fieldNorm(doc=1690)
         0.06969345 = weight(abstract_txt:model in 1690) [ClassicSimilarity], result of:
           0.06969345 = score(doc=1690,freq=4.0), product of:
             0.1119916 = queryWeight, product of:
               1.5313443 = boost
               3.9827821 = idf(docFreq=2249, maxDocs=44421)
               0.018362258 = queryNorm
             0.6223097 = fieldWeight in 1690, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.9827821 = idf(docFreq=2249, maxDocs=44421)
               0.078125 = fieldNorm(doc=1690)
         0.15770632 = weight(abstract_txt:singular in 1690) [ClassicSimilarity], result of:
           0.15770632 = score(doc=1690,freq=1.0), product of:
             0.24320184 = queryWeight, product of:
               1.59569 = boost
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.018362258 = queryNorm
             0.6484586 = fieldWeight in 1690, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.078125 = fieldNorm(doc=1690)
         0.07564751 = weight(abstract_txt:document in 1690) [ClassicSimilarity], result of:
           0.07564751 = score(doc=1690,freq=3.0), product of:
             0.13018675 = queryWeight, product of:
               1.6510625 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.018362258 = queryNorm
             0.5810692 = fieldWeight in 1690, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.078125 = fieldNorm(doc=1690)
         0.072788194 = weight(abstract_txt:text in 1690) [ClassicSimilarity], result of:
           0.072788194 = score(doc=1690,freq=1.0), product of:
             0.23056573 = queryWeight, product of:
               3.1073666 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.018362258 = queryNorm
             0.3156939 = fieldWeight in 1690, 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=1690)
         0.1605528 = weight(abstract_txt:indexing in 1690) [ClassicSimilarity], result of:
           0.1605528 = score(doc=1690,freq=2.0), product of:
             0.33403555 = queryWeight, product of:
               4.1816382 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.018362258 = queryNorm
             0.48064584 = fieldWeight in 1690, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.078125 = fieldNorm(doc=1690)
       0.36 = coord(9/25)
   

2. Mather, L.A.: ¬A linear algebra measure of cluster quality (2000) 0.26

   0.2569293 = sum of:
     0.2569293 = product of:
       0.8029041 = sum of:
         0.031052278 = weight(abstract_txt:empirical in 5767) [ClassicSimilarity], result of:
           0.031052278 = score(doc=5767,freq=1.0), product of:
             0.0955146 = queryWeight, product of:
               5.2016807 = idf(docFreq=664, maxDocs=44421)
               0.018362258 = queryNorm
             0.32510504 = fieldWeight in 5767, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2016807 = idf(docFreq=664, maxDocs=44421)
               0.0625 = fieldNorm(doc=5767)
         0.03461329 = weight(abstract_txt:space in 5767) [ClassicSimilarity], result of:
           0.03461329 = score(doc=5767,freq=1.0), product of:
             0.10268398 = queryWeight, product of:
               1.0368513 = boost
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.018362258 = queryNorm
             0.33708557 = fieldWeight in 5767, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.0625 = fieldNorm(doc=5767)
         0.061142337 = weight(abstract_txt:vector in 5767) [ClassicSimilarity], result of:
           0.061142337 = score(doc=5767,freq=1.0), product of:
             0.15004982 = queryWeight, product of:
               1.2533803 = boost
               6.519684 = idf(docFreq=177, maxDocs=44421)
               0.018362258 = queryNorm
             0.40748024 = fieldWeight in 5767, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.519684 = idf(docFreq=177, maxDocs=44421)
               0.0625 = fieldNorm(doc=5767)
         0.039424572 = weight(abstract_txt:model in 5767) [ClassicSimilarity], result of:
           0.039424572 = score(doc=5767,freq=2.0), product of:
             0.1119916 = queryWeight, product of:
               1.5313443 = boost
               3.9827821 = idf(docFreq=2249, maxDocs=44421)
               0.018362258 = queryNorm
             0.35203153 = fieldWeight in 5767, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9827821 = idf(docFreq=2249, maxDocs=44421)
               0.0625 = fieldNorm(doc=5767)
         0.17842434 = weight(abstract_txt:singular in 5767) [ClassicSimilarity], result of:
           0.17842434 = score(doc=5767,freq=2.0), product of:
             0.24320184 = queryWeight, product of:
               1.59569 = boost
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.018362258 = queryNorm
             0.73364717 = fieldWeight in 5767, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.0625 = fieldNorm(doc=5767)
         0.07812841 = weight(abstract_txt:document in 5767) [ClassicSimilarity], result of:
           0.07812841 = score(doc=5767,freq=5.0), product of:
             0.13018675 = queryWeight, product of:
               1.6510625 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.018362258 = queryNorm
             0.6001257 = fieldWeight in 5767, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.0625 = fieldNorm(doc=5767)
         0.058230557 = weight(abstract_txt:text in 5767) [ClassicSimilarity], result of:
           0.058230557 = score(doc=5767,freq=1.0), product of:
             0.23056573 = queryWeight, product of:
               3.1073666 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.018362258 = queryNorm
             0.25255513 = fieldWeight in 5767, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.0625 = fieldNorm(doc=5767)
         0.3218884 = weight(abstract_txt:cluster in 5767) [ClassicSimilarity], result of:
           0.3218884 = score(doc=5767,freq=3.0), product of:
             0.4540925 = queryWeight, product of:
               3.7765732 = boost
               6.548176 = idf(docFreq=172, maxDocs=44421)
               0.018362258 = queryNorm
             0.7088608 = fieldWeight in 5767, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.548176 = idf(docFreq=172, maxDocs=44421)
               0.0625 = fieldNorm(doc=5767)
       0.32 = coord(8/25)
   

3. Dunlavy, D.M.; O'Leary, D.P.; Conroy, J.M.; Schlesinger, J.D.: QCS: A system for querying, clustering and summarizing documents (2007) 0.24

   0.238775 = sum of:
     0.238775 = product of:
       0.66326386 = sum of:
         0.029145123 = weight(abstract_txt:experiments in 1947) [ClassicSimilarity], result of:
           0.029145123 = score(doc=1947,freq=1.0), product of:
             0.10008739 = queryWeight, product of:
               1.0236578 = boost
               5.324741 = idf(docFreq=587, maxDocs=44421)
               0.018362258 = queryNorm
             0.29119676 = fieldWeight in 1947, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.324741 = idf(docFreq=587, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
         0.03206463 = weight(abstract_txt:series in 1947) [ClassicSimilarity], result of:
           0.03206463 = score(doc=1947,freq=1.0), product of:
             0.10666443 = queryWeight, product of:
               1.0567565 = boost
               5.4969096 = idf(docFreq=494, maxDocs=44421)
               0.018362258 = queryNorm
             0.30061224 = fieldWeight in 1947, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4969096 = idf(docFreq=494, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
         0.02654441 = weight(abstract_txt:systems in 1947) [ClassicSimilarity], result of:
           0.02654441 = score(doc=1947,freq=3.0), product of:
             0.082152426 = queryWeight, product of:
               1.3115665 = boost
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.018362258 = queryNorm
             0.3231117 = fieldWeight in 1947, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.411175 = idf(docFreq=3984, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
         0.095807195 = weight(abstract_txt:decomposition in 1947) [ClassicSimilarity], result of:
           0.095807195 = score(doc=1947,freq=1.0), product of:
             0.22127593 = queryWeight, product of:
               1.5220615 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.018362258 = queryNorm
             0.43297613 = fieldWeight in 1947, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
         0.024392711 = weight(abstract_txt:model in 1947) [ClassicSimilarity], result of:
           0.024392711 = score(doc=1947,freq=1.0), product of:
             0.1119916 = queryWeight, product of:
               1.5313443 = boost
               3.9827821 = idf(docFreq=2249, maxDocs=44421)
               0.018362258 = queryNorm
             0.2178084 = fieldWeight in 1947, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9827821 = idf(docFreq=2249, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
         0.043236155 = weight(abstract_txt:document in 1947) [ClassicSimilarity], result of:
           0.043236155 = score(doc=1947,freq=2.0), product of:
             0.13018675 = queryWeight, product of:
               1.6510625 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.018362258 = queryNorm
             0.3321087 = fieldWeight in 1947, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
         0.050951738 = weight(abstract_txt:text in 1947) [ClassicSimilarity], result of:
           0.050951738 = score(doc=1947,freq=1.0), product of:
             0.23056573 = queryWeight, product of:
               3.1073666 = boost
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.018362258 = queryNorm
             0.22098574 = fieldWeight in 1947, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.040882 = idf(docFreq=2122, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
         0.28165233 = weight(abstract_txt:cluster in 1947) [ClassicSimilarity], result of:
           0.28165233 = score(doc=1947,freq=3.0), product of:
             0.4540925 = queryWeight, product of:
               3.7765732 = boost
               6.548176 = idf(docFreq=172, maxDocs=44421)
               0.018362258 = queryNorm
             0.6202532 = fieldWeight in 1947, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.548176 = idf(docFreq=172, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
         0.07946958 = weight(abstract_txt:indexing in 1947) [ClassicSimilarity], result of:
           0.07946958 = score(doc=1947,freq=1.0), product of:
             0.33403555 = queryWeight, product of:
               4.1816382 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.018362258 = queryNorm
             0.23790754 = fieldWeight in 1947, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1947)
       0.36 = coord(9/25)
   

4. Li, D.; Kwong, C.-P.; Lee, D.L.: Unified linear subspace approach to semantic analysis (2009) 0.21

   0.20877767 = sum of:
     0.20877767 = product of:
       0.65243024 = sum of:
         0.033308715 = weight(abstract_txt:experiments in 308) [ClassicSimilarity], result of:
           0.033308715 = score(doc=308,freq=1.0), product of:
             0.10008739 = queryWeight, product of:
               1.0236578 = boost
               5.324741 = idf(docFreq=587, maxDocs=44421)
               0.018362258 = queryNorm
             0.3327963 = fieldWeight in 308, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.324741 = idf(docFreq=587, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.09790116 = weight(abstract_txt:space in 308) [ClassicSimilarity], result of:
           0.09790116 = score(doc=308,freq=8.0), product of:
             0.10268398 = queryWeight, product of:
               1.0368513 = boost
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.018362258 = queryNorm
             0.95342195 = fieldWeight in 308, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.10590163 = weight(abstract_txt:vector in 308) [ClassicSimilarity], result of:
           0.10590163 = score(doc=308,freq=3.0), product of:
             0.15004982 = queryWeight, product of:
               1.2533803 = boost
               6.519684 = idf(docFreq=177, maxDocs=44421)
               0.018362258 = queryNorm
             0.70577645 = fieldWeight in 308, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.519684 = idf(docFreq=177, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.10949393 = weight(abstract_txt:decomposition in 308) [ClassicSimilarity], result of:
           0.10949393 = score(doc=308,freq=1.0), product of:
             0.22127593 = queryWeight, product of:
               1.5220615 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.018362258 = queryNorm
             0.49482986 = fieldWeight in 308, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.039424572 = weight(abstract_txt:model in 308) [ClassicSimilarity], result of:
           0.039424572 = score(doc=308,freq=2.0), product of:
             0.1119916 = queryWeight, product of:
               1.5313443 = boost
               3.9827821 = idf(docFreq=2249, maxDocs=44421)
               0.018362258 = queryNorm
             0.35203153 = fieldWeight in 308, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9827821 = idf(docFreq=2249, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.12616506 = weight(abstract_txt:singular in 308) [ClassicSimilarity], result of:
           0.12616506 = score(doc=308,freq=1.0), product of:
             0.24320184 = queryWeight, product of:
               1.59569 = boost
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.018362258 = queryNorm
             0.5187669 = fieldWeight in 308, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.049412746 = weight(abstract_txt:document in 308) [ClassicSimilarity], result of:
           0.049412746 = score(doc=308,freq=2.0), product of:
             0.13018675 = queryWeight, product of:
               1.6510625 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.018362258 = queryNorm
             0.3795528 = fieldWeight in 308, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.09082238 = weight(abstract_txt:indexing in 308) [ClassicSimilarity], result of:
           0.09082238 = score(doc=308,freq=1.0), product of:
             0.33403555 = queryWeight, product of:
               4.1816382 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.018362258 = queryNorm
             0.27189434 = fieldWeight in 308, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
       0.32 = coord(8/25)
   

5. Martin, D.I.; Berry, M.W.: Latent Semantic Indexing (2009) 0.16

   0.16041365 = sum of:
     0.16041365 = product of:
       0.6683902 = sum of:
         0.061188225 = weight(abstract_txt:space in 821) [ClassicSimilarity], result of:
           0.061188225 = score(doc=821,freq=2.0), product of:
             0.10268398 = queryWeight, product of:
               1.0368513 = boost
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.018362258 = queryNorm
             0.59588873 = fieldWeight in 821, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.393369 = idf(docFreq=548, maxDocs=44421)
               0.078125 = fieldNorm(doc=821)
         0.07642792 = weight(abstract_txt:vector in 821) [ClassicSimilarity], result of:
           0.07642792 = score(doc=821,freq=1.0), product of:
             0.15004982 = queryWeight, product of:
               1.2533803 = boost
               6.519684 = idf(docFreq=177, maxDocs=44421)
               0.018362258 = queryNorm
             0.5093503 = fieldWeight in 821, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.519684 = idf(docFreq=177, maxDocs=44421)
               0.078125 = fieldNorm(doc=821)
         0.13686742 = weight(abstract_txt:decomposition in 821) [ClassicSimilarity], result of:
           0.13686742 = score(doc=821,freq=1.0), product of:
             0.22127593 = queryWeight, product of:
               1.5220615 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.018362258 = queryNorm
             0.6185373 = fieldWeight in 821, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.078125 = fieldNorm(doc=821)
         0.15770632 = weight(abstract_txt:singular in 821) [ClassicSimilarity], result of:
           0.15770632 = score(doc=821,freq=1.0), product of:
             0.24320184 = queryWeight, product of:
               1.59569 = boost
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.018362258 = queryNorm
             0.6484586 = fieldWeight in 821, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.078125 = fieldNorm(doc=821)
         0.07564751 = weight(abstract_txt:document in 821) [ClassicSimilarity], result of:
           0.07564751 = score(doc=821,freq=3.0), product of:
             0.13018675 = queryWeight, product of:
               1.6510625 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.018362258 = queryNorm
             0.5810692 = fieldWeight in 821, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.078125 = fieldNorm(doc=821)
         0.1605528 = weight(abstract_txt:indexing in 821) [ClassicSimilarity], result of:
           0.1605528 = score(doc=821,freq=2.0), product of:
             0.33403555 = queryWeight, product of:
               4.1816382 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.018362258 = queryNorm
             0.48064584 = fieldWeight in 821, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.078125 = fieldNorm(doc=821)
       0.24 = coord(6/25)