Document (#44048)

Author

Qi, Q.
Hessen, D.J.
Heijden, P.G.M. van der

Title

Improving information retrieval through correspondenceanalysis instead of latent semantic analysis

Source

Journal of intelligent information systems [https://doi.org/10.1007/s10844-023-00815-y]

Year

2023

Abstract

The initial dimensions extracted by latent semantic analysis (LSA) of a document-term matrixhave been shown to mainly display marginal effects, which are irrelevant for informationretrieval. To improve the performance of LSA, usually the elements of the raw document-term matrix are weighted and the weighting exponent of singular values can be adjusted.An alternative information retrieval technique that ignores the marginal effects is correspon-dence analysis (CA). In this paper, the information retrieval performance of LSA and CA isempirically compared. Moreover, it is explored whether the two weightings also improve theperformance of CA. The results for four empirical datasets show that CA always performsbetter than LSA. Weighting the elements of the raw data matrix can improve CA; however,it is data dependent and the improvement is small. Adjusting the singular value weightingexponent often improves the performance of CA; however, the extent of the improvementdepends on the dataset and the number of dimensions. (PDF) Improving information retrieval through correspondence analysis instead of latent semantic analysis.

Content

Vgl.: https://www.researchgate.net/publication/373808290_Improving_information_retrieval_through_correspondence_analysis_instead_of_latent_semantic_analysis.

Theme

Retrievalalgorithmen

Object

Latent Semantic Analysis

Similar documents (content)

1. Li, D.; Kwong, C.-P.; Lee, D.L.: Unified linear subspace approach to semantic analysis (2009) 0.40

   0.40029907 = sum of:
     0.40029907 = product of:
       0.9097706 = sum of:
         0.023340195 = weight(abstract_txt:however in 308) [ClassicSimilarity], result of:
           0.023340195 = score(doc=308,freq=1.0), product of:
             0.08883665 = queryWeight, product of:
               1.095269 = boost
               4.203706 = idf(docFreq=1803, maxDocs=44421)
               0.019294746 = queryNorm
             0.2627316 = fieldWeight in 308, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.203706 = idf(docFreq=1803, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.035184722 = weight(abstract_txt:document in 308) [ClassicSimilarity], result of:
           0.035184722 = score(doc=308,freq=2.0), product of:
             0.09270047 = queryWeight, product of:
               1.118834 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.019294746 = 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)
         0.059986845 = weight(abstract_txt:term in 308) [ClassicSimilarity], result of:
           0.059986845 = score(doc=308,freq=3.0), product of:
             0.115572035 = queryWeight, product of:
               1.249255 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.019294746 = queryNorm
             0.5190429 = fieldWeight in 308, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.008893875 = weight(abstract_txt:information in 308) [ClassicSimilarity], result of:
           0.008893875 = score(doc=308,freq=1.0), product of:
             0.058829237 = queryWeight, product of:
               1.260481 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.019294746 = queryNorm
             0.15118122 = fieldWeight in 308, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.103423014 = weight(abstract_txt:semantic in 308) [ClassicSimilarity], result of:
           0.103423014 = score(doc=308,freq=6.0), product of:
             0.1509781 = queryWeight, product of:
               1.7487484 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.019294746 = queryNorm
             0.68501997 = fieldWeight in 308, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.0657161 = weight(abstract_txt:performance in 308) [ClassicSimilarity], result of:
           0.0657161 = score(doc=308,freq=2.0), product of:
             0.16093758 = queryWeight, product of:
               1.8055066 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.019294746 = queryNorm
             0.40833285 = fieldWeight in 308, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.059040397 = weight(abstract_txt:retrieval in 308) [ClassicSimilarity], result of:
           0.059040397 = score(doc=308,freq=5.0), product of:
             0.12151839 = queryWeight, product of:
               1.8115933 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.019294746 = queryNorm
             0.48585567 = fieldWeight in 308, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.05741996 = weight(abstract_txt:improve in 308) [ClassicSimilarity], result of:
           0.05741996 = score(doc=308,freq=1.0), product of:
             0.18532251 = queryWeight, product of:
               1.9374675 = boost
               4.9574084 = idf(docFreq=848, maxDocs=44421)
               0.019294746 = queryNorm
             0.30983803 = fieldWeight in 308, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9574084 = idf(docFreq=848, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.17967358 = weight(abstract_txt:singular in 308) [ClassicSimilarity], result of:
           0.17967358 = score(doc=308,freq=1.0), product of:
             0.34634745 = queryWeight, product of:
               2.1626225 = boost
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.019294746 = 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)
         0.038061116 = weight(abstract_txt:analysis in 308) [ClassicSimilarity], result of:
           0.038061116 = score(doc=308,freq=1.0), product of:
             0.16704117 = queryWeight, product of:
               2.3746874 = boost
               3.6456752 = idf(docFreq=3151, maxDocs=44421)
               0.019294746 = queryNorm
             0.2278547 = fieldWeight in 308, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6456752 = idf(docFreq=3151, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
         0.27903077 = weight(abstract_txt:latent in 308) [ClassicSimilarity], result of:
           0.27903077 = score(doc=308,freq=3.0), product of:
             0.36864972 = queryWeight, product of:
               2.7326076 = boost
               6.9919376 = idf(docFreq=110, maxDocs=44421)
               0.019294746 = queryNorm
             0.7568994 = fieldWeight in 308, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.9919376 = idf(docFreq=110, maxDocs=44421)
               0.0625 = fieldNorm(doc=308)
       0.44 = coord(11/25)
   

2. Rishel, T.; Perkins, L.A.; Yenduri, S.; Zand, F.: Determining the context of text using augmented latent semantic indexing (2007) 0.36

   0.36497718 = sum of:
     0.36497718 = product of:
       1.1405537 = sum of:
         0.043980904 = weight(abstract_txt:document in 2316) [ClassicSimilarity], result of:
           0.043980904 = score(doc=2316,freq=2.0), product of:
             0.09270047 = queryWeight, product of:
               1.118834 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.019294746 = queryNorm
             0.47444102 = fieldWeight in 2316, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.078125 = fieldNorm(doc=2316)
         0.11801483 = weight(abstract_txt:semantic in 2316) [ClassicSimilarity], result of:
           0.11801483 = score(doc=2316,freq=5.0), product of:
             0.1509781 = queryWeight, product of:
               1.7487484 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.019294746 = queryNorm
             0.7816685 = fieldWeight in 2316, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.078125 = fieldNorm(doc=2316)
         0.12620665 = weight(abstract_txt:matrix in 2316) [ClassicSimilarity], result of:
           0.12620665 = score(doc=2316,freq=1.0), product of:
             0.2358508 = queryWeight, product of:
               1.7846102 = boost
               6.849437 = idf(docFreq=127, maxDocs=44421)
               0.019294746 = queryNorm
             0.53511226 = fieldWeight in 2316, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.849437 = idf(docFreq=127, maxDocs=44421)
               0.078125 = fieldNorm(doc=2316)
         0.05808538 = weight(abstract_txt:performance in 2316) [ClassicSimilarity], result of:
           0.05808538 = score(doc=2316,freq=1.0), product of:
             0.16093758 = queryWeight, product of:
               1.8055066 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.019294746 = queryNorm
             0.36091867 = fieldWeight in 2316, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.078125 = fieldNorm(doc=2316)
         0.07177495 = weight(abstract_txt:improve in 2316) [ClassicSimilarity], result of:
           0.07177495 = score(doc=2316,freq=1.0), product of:
             0.18532251 = queryWeight, product of:
               1.9374675 = boost
               4.9574084 = idf(docFreq=848, maxDocs=44421)
               0.019294746 = queryNorm
             0.38729754 = fieldWeight in 2316, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9574084 = idf(docFreq=848, maxDocs=44421)
               0.078125 = fieldNorm(doc=2316)
         0.22459199 = weight(abstract_txt:singular in 2316) [ClassicSimilarity], result of:
           0.22459199 = score(doc=2316,freq=1.0), product of:
             0.34634745 = queryWeight, product of:
               2.1626225 = boost
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.019294746 = queryNorm
             0.6484586 = fieldWeight in 2316, 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=2316)
         0.09515279 = weight(abstract_txt:analysis in 2316) [ClassicSimilarity], result of:
           0.09515279 = score(doc=2316,freq=4.0), product of:
             0.16704117 = queryWeight, product of:
               2.3746874 = boost
               3.6456752 = idf(docFreq=3151, maxDocs=44421)
               0.019294746 = queryNorm
             0.56963676 = fieldWeight in 2316, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.6456752 = idf(docFreq=3151, maxDocs=44421)
               0.078125 = fieldNorm(doc=2316)
         0.4027462 = weight(abstract_txt:latent in 2316) [ClassicSimilarity], result of:
           0.4027462 = score(doc=2316,freq=4.0), product of:
             0.36864972 = queryWeight, product of:
               2.7326076 = boost
               6.9919376 = idf(docFreq=110, maxDocs=44421)
               0.019294746 = queryNorm
             1.0924902 = fieldWeight in 2316, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.9919376 = idf(docFreq=110, maxDocs=44421)
               0.078125 = fieldNorm(doc=2316)
       0.32 = coord(8/25)
   

3. Deerwester, S.; Dumais, S.; Landauer, T.; Furnass, G.; Beck, L.: Improving information retrieval with latent semantic indexing (1988) 0.35

   0.35475278 = sum of:
     0.35475278 = product of:
       0.98542434 = sum of:
         0.037319034 = weight(abstract_txt:document in 3396) [ClassicSimilarity], result of:
           0.037319034 = score(doc=3396,freq=1.0), product of:
             0.09270047 = queryWeight, product of:
               1.118834 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.019294746 = queryNorm
             0.40257657 = fieldWeight in 3396, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
         0.013340814 = weight(abstract_txt:information in 3396) [ClassicSimilarity], result of:
           0.013340814 = score(doc=3396,freq=1.0), product of:
             0.058829237 = queryWeight, product of:
               1.260481 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.019294746 = queryNorm
             0.22677183 = fieldWeight in 3396, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
         0.09632009 = weight(abstract_txt:improving in 3396) [ClassicSimilarity], result of:
           0.09632009 = score(doc=3396,freq=1.0), product of:
             0.17442401 = queryWeight, product of:
               1.5347153 = boost
               5.8903265 = idf(docFreq=333, maxDocs=44421)
               0.019294746 = queryNorm
             0.5522181 = fieldWeight in 3396, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8903265 = idf(docFreq=333, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
         0.09676341 = weight(abstract_txt:dimensions in 3396) [ClassicSimilarity], result of:
           0.09676341 = score(doc=3396,freq=1.0), product of:
             0.1749588 = queryWeight, product of:
               1.5370662 = boost
               5.899349 = idf(docFreq=330, maxDocs=44421)
               0.019294746 = queryNorm
             0.553064 = fieldWeight in 3396, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.899349 = idf(docFreq=330, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
         0.06333341 = weight(abstract_txt:semantic in 3396) [ClassicSimilarity], result of:
           0.06333341 = score(doc=3396,freq=1.0), product of:
             0.1509781 = queryWeight, product of:
               1.7487484 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.019294746 = queryNorm
             0.41948736 = fieldWeight in 3396, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
         0.120728195 = weight(abstract_txt:performance in 3396) [ClassicSimilarity], result of:
           0.120728195 = score(doc=3396,freq=3.0), product of:
             0.16093758 = queryWeight, product of:
               1.8055066 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.019294746 = queryNorm
             0.7501554 = fieldWeight in 3396, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
         0.056010637 = weight(abstract_txt:retrieval in 3396) [ClassicSimilarity], result of:
           0.056010637 = score(doc=3396,freq=2.0), product of:
             0.12151839 = queryWeight, product of:
               1.8115933 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.019294746 = queryNorm
             0.46092314 = fieldWeight in 3396, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
         0.15986726 = weight(abstract_txt:weighting in 3396) [ClassicSimilarity], result of:
           0.15986726 = score(doc=3396,freq=1.0), product of:
             0.24451265 = queryWeight, product of:
               1.8170855 = boost
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.019294746 = queryNorm
             0.65382 = fieldWeight in 3396, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
         0.3417415 = weight(abstract_txt:latent in 3396) [ClassicSimilarity], result of:
           0.3417415 = score(doc=3396,freq=2.0), product of:
             0.36864972 = queryWeight, product of:
               2.7326076 = boost
               6.9919376 = idf(docFreq=110, maxDocs=44421)
               0.019294746 = queryNorm
             0.92700875 = fieldWeight in 3396, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.9919376 = idf(docFreq=110, maxDocs=44421)
               0.09375 = fieldNorm(doc=3396)
       0.36 = coord(9/25)
   

4. Lochbaum, K.E.; Streeter, A.R.: Comparing and combining the effectiveness of latent semantic indexing and the ordinary vector space model for information retrieval (1989) 0.31

   0.3118219 = sum of:
     0.3118219 = product of:
       0.86617196 = sum of:
         0.043291774 = weight(abstract_txt:term in 4458) [ClassicSimilarity], result of:
           0.043291774 = score(doc=4458,freq=1.0), product of:
             0.115572035 = queryWeight, product of:
               1.249255 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.019294746 = queryNorm
             0.37458694 = fieldWeight in 4458, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.078125 = fieldNorm(doc=4458)
         0.095107645 = weight(abstract_txt:effects in 4458) [ClassicSimilarity], result of:
           0.095107645 = score(doc=4458,freq=2.0), product of:
             0.15501823 = queryWeight, product of:
               1.4468253 = boost
               5.5529995 = idf(docFreq=467, maxDocs=44421)
               0.019294746 = queryNorm
             0.61352557 = fieldWeight in 4458, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5529995 = idf(docFreq=467, maxDocs=44421)
               0.078125 = fieldNorm(doc=4458)
         0.09141389 = weight(abstract_txt:semantic in 4458) [ClassicSimilarity], result of:
           0.09141389 = score(doc=4458,freq=3.0), product of:
             0.1509781 = queryWeight, product of:
               1.7487484 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.019294746 = queryNorm
             0.6054778 = fieldWeight in 4458, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.078125 = fieldNorm(doc=4458)
         0.12620665 = weight(abstract_txt:matrix in 4458) [ClassicSimilarity], result of:
           0.12620665 = score(doc=4458,freq=1.0), product of:
             0.2358508 = queryWeight, product of:
               1.7846102 = boost
               6.849437 = idf(docFreq=127, maxDocs=44421)
               0.019294746 = queryNorm
             0.53511226 = fieldWeight in 4458, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.849437 = idf(docFreq=127, maxDocs=44421)
               0.078125 = fieldNorm(doc=4458)
         0.05808538 = weight(abstract_txt:performance in 4458) [ClassicSimilarity], result of:
           0.05808538 = score(doc=4458,freq=1.0), product of:
             0.16093758 = queryWeight, product of:
               1.8055066 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.019294746 = queryNorm
             0.36091867 = fieldWeight in 4458, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.078125 = fieldNorm(doc=4458)
         0.04667553 = weight(abstract_txt:retrieval in 4458) [ClassicSimilarity], result of:
           0.04667553 = score(doc=4458,freq=2.0), product of:
             0.12151839 = queryWeight, product of:
               1.8115933 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.019294746 = queryNorm
             0.3841026 = fieldWeight in 4458, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.078125 = fieldNorm(doc=4458)
         0.13322271 = weight(abstract_txt:weighting in 4458) [ClassicSimilarity], result of:
           0.13322271 = score(doc=4458,freq=1.0), product of:
             0.24451265 = queryWeight, product of:
               1.8170855 = boost
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.019294746 = queryNorm
             0.54485 = fieldWeight in 4458, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.078125 = fieldNorm(doc=4458)
         0.22459199 = weight(abstract_txt:singular in 4458) [ClassicSimilarity], result of:
           0.22459199 = score(doc=4458,freq=1.0), product of:
             0.34634745 = queryWeight, product of:
               2.1626225 = boost
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.019294746 = queryNorm
             0.6484586 = fieldWeight in 4458, 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=4458)
         0.047576394 = weight(abstract_txt:analysis in 4458) [ClassicSimilarity], result of:
           0.047576394 = score(doc=4458,freq=1.0), product of:
             0.16704117 = queryWeight, product of:
               2.3746874 = boost
               3.6456752 = idf(docFreq=3151, maxDocs=44421)
               0.019294746 = queryNorm
             0.28481838 = fieldWeight in 4458, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6456752 = idf(docFreq=3151, maxDocs=44421)
               0.078125 = fieldNorm(doc=4458)
       0.36 = coord(9/25)
   

5. Gao, J.; Zhang, J.: Clustered SVD strategies in latent semantic indexing (2005) 0.29

   0.29323888 = sum of:
     0.29323888 = product of:
       0.8145524 = sum of:
         0.031099195 = weight(abstract_txt:document in 2166) [ClassicSimilarity], result of:
           0.031099195 = score(doc=2166,freq=1.0), product of:
             0.09270047 = queryWeight, product of:
               1.118834 = boost
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.019294746 = queryNorm
             0.33548045 = fieldWeight in 2166, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.29415 = idf(docFreq=1647, maxDocs=44421)
               0.078125 = fieldNorm(doc=2166)
         0.043291774 = weight(abstract_txt:term in 2166) [ClassicSimilarity], result of:
           0.043291774 = score(doc=2166,freq=1.0), product of:
             0.115572035 = queryWeight, product of:
               1.249255 = boost
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.019294746 = queryNorm
             0.37458694 = fieldWeight in 2166, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.794713 = idf(docFreq=998, maxDocs=44421)
               0.078125 = fieldNorm(doc=2166)
         0.011117345 = weight(abstract_txt:information in 2166) [ClassicSimilarity], result of:
           0.011117345 = score(doc=2166,freq=1.0), product of:
             0.058829237 = queryWeight, product of:
               1.260481 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.019294746 = queryNorm
             0.18897653 = fieldWeight in 2166, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.078125 = fieldNorm(doc=2166)
         0.052777834 = weight(abstract_txt:semantic in 2166) [ClassicSimilarity], result of:
           0.052777834 = score(doc=2166,freq=1.0), product of:
             0.1509781 = queryWeight, product of:
               1.7487484 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.019294746 = queryNorm
             0.34957278 = fieldWeight in 2166, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.078125 = fieldNorm(doc=2166)
         0.12620665 = weight(abstract_txt:matrix in 2166) [ClassicSimilarity], result of:
           0.12620665 = score(doc=2166,freq=1.0), product of:
             0.2358508 = queryWeight, product of:
               1.7846102 = boost
               6.849437 = idf(docFreq=127, maxDocs=44421)
               0.019294746 = queryNorm
             0.53511226 = fieldWeight in 2166, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.849437 = idf(docFreq=127, maxDocs=44421)
               0.078125 = fieldNorm(doc=2166)
         0.05808538 = weight(abstract_txt:performance in 2166) [ClassicSimilarity], result of:
           0.05808538 = score(doc=2166,freq=1.0), product of:
             0.16093758 = queryWeight, product of:
               1.8055066 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.019294746 = queryNorm
             0.36091867 = fieldWeight in 2166, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.078125 = fieldNorm(doc=2166)
         0.066009164 = weight(abstract_txt:retrieval in 2166) [ClassicSimilarity], result of:
           0.066009164 = score(doc=2166,freq=4.0), product of:
             0.12151839 = queryWeight, product of:
               1.8115933 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.019294746 = queryNorm
             0.5432031 = fieldWeight in 2166, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.078125 = fieldNorm(doc=2166)
         0.22459199 = weight(abstract_txt:singular in 2166) [ClassicSimilarity], result of:
           0.22459199 = score(doc=2166,freq=1.0), product of:
             0.34634745 = queryWeight, product of:
               2.1626225 = boost
               8.30027 = idf(docFreq=29, maxDocs=44421)
               0.019294746 = queryNorm
             0.6484586 = fieldWeight in 2166, 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=2166)
         0.2013731 = weight(abstract_txt:latent in 2166) [ClassicSimilarity], result of:
           0.2013731 = score(doc=2166,freq=1.0), product of:
             0.36864972 = queryWeight, product of:
               2.7326076 = boost
               6.9919376 = idf(docFreq=110, maxDocs=44421)
               0.019294746 = queryNorm
             0.5462451 = fieldWeight in 2166, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9919376 = idf(docFreq=110, maxDocs=44421)
               0.078125 = fieldNorm(doc=2166)
       0.36 = coord(9/25)