Document (#417)

Author

Frants, V.I.
Shapiro, J.

Title

Control and feedback in a documentary information retrieval system

Source

Journal of the American Society for Information Science. 42(1991) no.9, S.623-634

Year

1991

Abstract

Addresses the problem of control in documentary information retrieval systems is analysed and it is shown why an IR system has to be looked at as an adaptive system. The algorithms of feedback are proposed and it is shown how they depend on the type of the collection of documents: static (no change in the collection between searches) and dynamic (when the change occurs between searches). The proposed algorithms are the basis for the development of the fully automated information retrieval systems

Theme

Retrievalalgorithmen

Similar documents (author)

1. Frants, V.I.; Kamenoff, N.I.; Shapiro, J.: ¬One approach to classification of users and automatic clustering of documents (1993) 5.05

   5.0513926 = sum of:
     5.0513926 = sum of:
       2.3461893 = weight(author_txt:shapiro in 4569) [ClassicSimilarity], result of:
         2.3461893 = score(doc=4569,freq=1.0), product of:
           0.6728154 = queryWeight, product of:
             9.298992 = idf(docFreq=10, maxDocs=44218)
             0.07235358 = queryNorm
           3.487122 = fieldWeight in 4569, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.298992 = idf(docFreq=10, maxDocs=44218)
             0.375 = fieldNorm(doc=4569)
       2.705203 = weight(author_txt:frants in 4569) [ClassicSimilarity], result of:
         2.705203 = score(doc=4569,freq=1.0), product of:
           0.7398104 = queryWeight, product of:
             1.0486058 = boost
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.07235358 = queryNorm
           3.6566167 = fieldWeight in 4569, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.375 = fieldNorm(doc=4569)
   

2. Frants, V.I.; Shapiro, J.; Voiskunskii, V.G.: Optimal search available to an individual user (1996) 5.05

   5.0513926 = sum of:
     5.0513926 = sum of:
       2.3461893 = weight(author_txt:shapiro in 7703) [ClassicSimilarity], result of:
         2.3461893 = score(doc=7703,freq=1.0), product of:
           0.6728154 = queryWeight, product of:
             9.298992 = idf(docFreq=10, maxDocs=44218)
             0.07235358 = queryNorm
           3.487122 = fieldWeight in 7703, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.298992 = idf(docFreq=10, maxDocs=44218)
             0.375 = fieldNorm(doc=7703)
       2.705203 = weight(author_txt:frants in 7703) [ClassicSimilarity], result of:
         2.705203 = score(doc=7703,freq=1.0), product of:
           0.7398104 = queryWeight, product of:
             1.0486058 = boost
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.07235358 = queryNorm
           3.6566167 = fieldWeight in 7703, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.375 = fieldNorm(doc=7703)
   

3. Frants, V.I.; Voiskunskii, V.G.; Shapiro, J.: Automated information retrieval : theory and methods (1997) 5.05

   5.0513926 = sum of:
     5.0513926 = sum of:
       2.3461893 = weight(author_txt:shapiro in 1790) [ClassicSimilarity], result of:
         2.3461893 = score(doc=1790,freq=1.0), product of:
           0.6728154 = queryWeight, product of:
             9.298992 = idf(docFreq=10, maxDocs=44218)
             0.07235358 = queryNorm
           3.487122 = fieldWeight in 1790, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.298992 = idf(docFreq=10, maxDocs=44218)
             0.375 = fieldNorm(doc=1790)
       2.705203 = weight(author_txt:frants in 1790) [ClassicSimilarity], result of:
         2.705203 = score(doc=1790,freq=1.0), product of:
           0.7398104 = queryWeight, product of:
             1.0486058 = boost
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.07235358 = queryNorm
           3.6566167 = fieldWeight in 1790, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.375 = fieldNorm(doc=1790)
   

4. Frants, V.I.; Shapiro, J.; Taksa, I.; Voiskunskii, V.G.: Boolean search : current state and perspectives (1999) 4.21

   4.2094936 = sum of:
     4.2094936 = sum of:
       1.9551578 = weight(author_txt:shapiro in 2954) [ClassicSimilarity], result of:
         1.9551578 = score(doc=2954,freq=1.0), product of:
           0.6728154 = queryWeight, product of:
             9.298992 = idf(docFreq=10, maxDocs=44218)
             0.07235358 = queryNorm
           2.905935 = fieldWeight in 2954, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.298992 = idf(docFreq=10, maxDocs=44218)
             0.3125 = fieldNorm(doc=2954)
       2.2543359 = weight(author_txt:frants in 2954) [ClassicSimilarity], result of:
         2.2543359 = score(doc=2954,freq=1.0), product of:
           0.7398104 = queryWeight, product of:
             1.0486058 = boost
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.07235358 = queryNorm
           3.0471804 = fieldWeight in 2954, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             9.7509775 = idf(docFreq=6, maxDocs=44218)
             0.3125 = fieldNorm(doc=2954)
   

5. Frants, V.I.: Development of IR systems : new direction (1996) 2.25

   2.2543359 = sum of:
     2.2543359 = product of:
       4.5086718 = sum of:
         4.5086718 = weight(author_txt:frants in 4955) [ClassicSimilarity], result of:
           4.5086718 = score(doc=4955,freq=1.0), product of:
             0.7398104 = queryWeight, product of:
               1.0486058 = boost
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.07235358 = queryNorm
             6.094361 = fieldWeight in 4955, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.7509775 = idf(docFreq=6, maxDocs=44218)
               0.625 = fieldNorm(doc=4955)
       0.5 = coord(1/2)
   

Similar documents (content)

1. Lopez-Pujalte, C.; Guerrero Bote, V.P.; Moya-Anegón, F. de: Evaluation of the application of genetic algorithms to relevance feedback (2003) 0.19

   0.19469662 = sum of:
     0.19469662 = product of:
       0.69534504 = sum of:
         0.039965104 = weight(abstract_txt:type in 2756) [ClassicSimilarity], result of:
           0.039965104 = score(doc=2756,freq=1.0), product of:
             0.10249006 = queryWeight, product of:
               4.991248 = idf(docFreq=816, maxDocs=44218)
               0.020533955 = queryNorm
             0.38994128 = fieldWeight in 2756, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.991248 = idf(docFreq=816, maxDocs=44218)
               0.078125 = fieldNorm(doc=2756)
         0.01368139 = weight(abstract_txt:information in 2756) [ClassicSimilarity], result of:
           0.01368139 = score(doc=2756,freq=1.0), product of:
             0.07233609 = queryWeight, product of:
               1.4551148 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.020533955 = queryNorm
             0.18913643 = fieldWeight in 2756, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.078125 = fieldNorm(doc=2756)
         0.09131397 = weight(abstract_txt:collection in 2756) [ClassicSimilarity], result of:
           0.09131397 = score(doc=2756,freq=2.0), product of:
             0.17779489 = queryWeight, product of:
               1.8626608 = boost
               4.648501 = idf(docFreq=1150, maxDocs=44218)
               0.020533955 = queryNorm
             0.51359165 = fieldWeight in 2756, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.648501 = idf(docFreq=1150, maxDocs=44218)
               0.078125 = fieldNorm(doc=2756)
         0.03697912 = weight(abstract_txt:system in 2756) [ClassicSimilarity], result of:
           0.03697912 = score(doc=2756,freq=1.0), product of:
             0.14035867 = queryWeight, product of:
               2.026933 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.020533955 = queryNorm
             0.2634616 = fieldWeight in 2756, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.078125 = fieldNorm(doc=2756)
         0.040466104 = weight(abstract_txt:retrieval in 2756) [ClassicSimilarity], result of:
           0.040466104 = score(doc=2756,freq=1.0), product of:
             0.14904903 = queryWeight, product of:
               2.0887396 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.020533955 = queryNorm
             0.27149525 = fieldWeight in 2756, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.078125 = fieldNorm(doc=2756)
         0.23908284 = weight(abstract_txt:algorithms in 2756) [ClassicSimilarity], result of:
           0.23908284 = score(doc=2756,freq=4.0), product of:
             0.26807114 = queryWeight, product of:
               2.2871737 = boost
               5.707926 = idf(docFreq=398, maxDocs=44218)
               0.020533955 = queryNorm
             0.8918634 = fieldWeight in 2756, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.707926 = idf(docFreq=398, maxDocs=44218)
               0.078125 = fieldNorm(doc=2756)
         0.23385648 = weight(abstract_txt:feedback in 2756) [ClassicSimilarity], result of:
           0.23385648 = score(doc=2756,freq=3.0), product of:
             0.2907348 = queryWeight, product of:
               2.381895 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.020533955 = queryNorm
             0.8043636 = fieldWeight in 2756, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.078125 = fieldNorm(doc=2756)
       0.28 = coord(7/25)
   

2. Krutulis, J.D.; Jacob, E.K.: ¬A theoretical model for the study of emergent structure in adaptive information networks (1995) 0.19

   0.18801679 = sum of:
     0.18801679 = product of:
       0.6714885 = sum of:
         0.074088946 = weight(abstract_txt:dynamic in 3353) [ClassicSimilarity], result of:
           0.074088946 = score(doc=3353,freq=1.0), product of:
             0.13696489 = queryWeight, product of:
               1.1560158 = boost
               5.7699614 = idf(docFreq=374, maxDocs=44218)
               0.020533955 = queryNorm
             0.54093385 = fieldWeight in 3353, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7699614 = idf(docFreq=374, maxDocs=44218)
               0.09375 = fieldNorm(doc=3353)
         0.18257734 = weight(abstract_txt:adaptive in 3353) [ClassicSimilarity], result of:
           0.18257734 = score(doc=3353,freq=2.0), product of:
             0.19833297 = queryWeight, product of:
               1.3910943 = boost
               6.943297 = idf(docFreq=115, maxDocs=44218)
               0.020533955 = queryNorm
             0.92055976 = fieldWeight in 3353, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.943297 = idf(docFreq=115, maxDocs=44218)
               0.09375 = fieldNorm(doc=3353)
         0.01641767 = weight(abstract_txt:information in 3353) [ClassicSimilarity], result of:
           0.01641767 = score(doc=3353,freq=1.0), product of:
             0.07233609 = queryWeight, product of:
               1.4551148 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.020533955 = queryNorm
             0.22696373 = fieldWeight in 3353, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.09375 = fieldNorm(doc=3353)
         0.044374943 = weight(abstract_txt:system in 3353) [ClassicSimilarity], result of:
           0.044374943 = score(doc=3353,freq=1.0), product of:
             0.14035867 = queryWeight, product of:
               2.026933 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.020533955 = queryNorm
             0.3161539 = fieldWeight in 3353, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.09375 = fieldNorm(doc=3353)
         0.048559327 = weight(abstract_txt:retrieval in 3353) [ClassicSimilarity], result of:
           0.048559327 = score(doc=3353,freq=1.0), product of:
             0.14904903 = queryWeight, product of:
               2.0887396 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.020533955 = queryNorm
             0.3257943 = fieldWeight in 3353, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.09375 = fieldNorm(doc=3353)
         0.14344971 = weight(abstract_txt:algorithms in 3353) [ClassicSimilarity], result of:
           0.14344971 = score(doc=3353,freq=1.0), product of:
             0.26807114 = queryWeight, product of:
               2.2871737 = boost
               5.707926 = idf(docFreq=398, maxDocs=44218)
               0.020533955 = queryNorm
             0.53511804 = fieldWeight in 3353, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.707926 = idf(docFreq=398, maxDocs=44218)
               0.09375 = fieldNorm(doc=3353)
         0.16202053 = weight(abstract_txt:feedback in 3353) [ClassicSimilarity], result of:
           0.16202053 = score(doc=3353,freq=1.0), product of:
             0.2907348 = queryWeight, product of:
               2.381895 = boost
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.020533955 = queryNorm
             0.55727947 = fieldWeight in 3353, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9443145 = idf(docFreq=314, maxDocs=44218)
               0.09375 = fieldNorm(doc=3353)
       0.28 = coord(7/25)
   

3. Veltman, K.: Multidimensional bibliography in classification (1985) 0.19

   0.18648113 = sum of:
     0.18648113 = product of:
       0.58275354 = sum of:
         0.087314665 = weight(abstract_txt:dynamic in 1543) [ClassicSimilarity], result of:
           0.087314665 = score(doc=1543,freq=2.0), product of:
             0.13696489 = queryWeight, product of:
               1.1560158 = boost
               5.7699614 = idf(docFreq=374, maxDocs=44218)
               0.020533955 = queryNorm
             0.6374967 = fieldWeight in 1543, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.7699614 = idf(docFreq=374, maxDocs=44218)
               0.078125 = fieldNorm(doc=1543)
         0.097541854 = weight(abstract_txt:analysed in 1543) [ClassicSimilarity], result of:
           0.097541854 = score(doc=1543,freq=1.0), product of:
             0.18578978 = queryWeight, product of:
               1.3463874 = boost
               6.7201533 = idf(docFreq=144, maxDocs=44218)
               0.020533955 = queryNorm
             0.52501196 = fieldWeight in 1543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.7201533 = idf(docFreq=144, maxDocs=44218)
               0.078125 = fieldNorm(doc=1543)
         0.025530778 = weight(abstract_txt:systems in 1543) [ClassicSimilarity], result of:
           0.025530778 = score(doc=1543,freq=1.0), product of:
             0.09578125 = queryWeight, product of:
               1.3671443 = boost
               3.4118783 = idf(docFreq=3963, maxDocs=44218)
               0.020533955 = queryNorm
             0.26655298 = fieldWeight in 1543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4118783 = idf(docFreq=3963, maxDocs=44218)
               0.078125 = fieldNorm(doc=1543)
         0.11007246 = weight(abstract_txt:depend in 1543) [ClassicSimilarity], result of:
           0.11007246 = score(doc=1543,freq=1.0), product of:
             0.2013787 = queryWeight, product of:
               1.401735 = boost
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.020533955 = queryNorm
             0.5465943 = fieldWeight in 1543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.996407 = idf(docFreq=109, maxDocs=44218)
               0.078125 = fieldNorm(doc=1543)
         0.11611588 = weight(abstract_txt:static in 1543) [ClassicSimilarity], result of:
           0.11611588 = score(doc=1543,freq=1.0), product of:
             0.20868386 = queryWeight, product of:
               1.4269329 = boost
               7.122176 = idf(docFreq=96, maxDocs=44218)
               0.020533955 = queryNorm
             0.55642 = fieldWeight in 1543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.122176 = idf(docFreq=96, maxDocs=44218)
               0.078125 = fieldNorm(doc=1543)
         0.01368139 = weight(abstract_txt:information in 1543) [ClassicSimilarity], result of:
           0.01368139 = score(doc=1543,freq=1.0), product of:
             0.07233609 = queryWeight, product of:
               1.4551148 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.020533955 = queryNorm
             0.18913643 = fieldWeight in 1543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.078125 = fieldNorm(doc=1543)
         0.03697912 = weight(abstract_txt:system in 1543) [ClassicSimilarity], result of:
           0.03697912 = score(doc=1543,freq=1.0), product of:
             0.14035867 = queryWeight, product of:
               2.026933 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.020533955 = queryNorm
             0.2634616 = fieldWeight in 1543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.078125 = fieldNorm(doc=1543)
         0.095517375 = weight(abstract_txt:change in 1543) [ClassicSimilarity], result of:
           0.095517375 = score(doc=1543,freq=1.0), product of:
             0.23083024 = queryWeight, product of:
               2.122367 = boost
               5.29663 = idf(docFreq=601, maxDocs=44218)
               0.020533955 = queryNorm
             0.41379923 = fieldWeight in 1543, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.29663 = idf(docFreq=601, maxDocs=44218)
               0.078125 = fieldNorm(doc=1543)
       0.32 = coord(8/25)
   

4. Wu, S.; Li, J.; Zeng, X.; Bi, Y.: Adaptive data fusion methods in information retrieval (2014) 0.17

   0.1731308 = sum of:
     0.1731308 = product of:
       0.6183243 = sum of:
         0.061740793 = weight(abstract_txt:dynamic in 1500) [ClassicSimilarity], result of:
           0.061740793 = score(doc=1500,freq=1.0), product of:
             0.13696489 = queryWeight, product of:
               1.1560158 = boost
               5.7699614 = idf(docFreq=374, maxDocs=44218)
               0.020533955 = queryNorm
             0.45077825 = fieldWeight in 1500, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7699614 = idf(docFreq=374, maxDocs=44218)
               0.078125 = fieldNorm(doc=1500)
         0.1521478 = weight(abstract_txt:adaptive in 1500) [ClassicSimilarity], result of:
           0.1521478 = score(doc=1500,freq=2.0), product of:
             0.19833297 = queryWeight, product of:
               1.3910943 = boost
               6.943297 = idf(docFreq=115, maxDocs=44218)
               0.020533955 = queryNorm
             0.7671332 = fieldWeight in 1500, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.943297 = idf(docFreq=115, maxDocs=44218)
               0.078125 = fieldNorm(doc=1500)
         0.11611588 = weight(abstract_txt:static in 1500) [ClassicSimilarity], result of:
           0.11611588 = score(doc=1500,freq=1.0), product of:
             0.20868386 = queryWeight, product of:
               1.4269329 = boost
               7.122176 = idf(docFreq=96, maxDocs=44218)
               0.020533955 = queryNorm
             0.55642 = fieldWeight in 1500, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.122176 = idf(docFreq=96, maxDocs=44218)
               0.078125 = fieldNorm(doc=1500)
         0.01368139 = weight(abstract_txt:information in 1500) [ClassicSimilarity], result of:
           0.01368139 = score(doc=1500,freq=1.0), product of:
             0.07233609 = queryWeight, product of:
               1.4551148 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.020533955 = queryNorm
             0.18913643 = fieldWeight in 1500, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.078125 = fieldNorm(doc=1500)
         0.10903171 = weight(abstract_txt:proposed in 1500) [ClassicSimilarity], result of:
           0.10903171 = score(doc=1500,freq=3.0), product of:
             0.17480986 = queryWeight, product of:
               1.8469583 = boost
               4.6093135 = idf(docFreq=1196, maxDocs=44218)
               0.020533955 = queryNorm
             0.623716 = fieldWeight in 1500, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.6093135 = idf(docFreq=1196, maxDocs=44218)
               0.078125 = fieldNorm(doc=1500)
         0.07008935 = weight(abstract_txt:retrieval in 1500) [ClassicSimilarity], result of:
           0.07008935 = score(doc=1500,freq=3.0), product of:
             0.14904903 = queryWeight, product of:
               2.0887396 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.020533955 = queryNorm
             0.47024357 = fieldWeight in 1500, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.078125 = fieldNorm(doc=1500)
         0.095517375 = weight(abstract_txt:change in 1500) [ClassicSimilarity], result of:
           0.095517375 = score(doc=1500,freq=1.0), product of:
             0.23083024 = queryWeight, product of:
               2.122367 = boost
               5.29663 = idf(docFreq=601, maxDocs=44218)
               0.020533955 = queryNorm
             0.41379923 = fieldWeight in 1500, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.29663 = idf(docFreq=601, maxDocs=44218)
               0.078125 = fieldNorm(doc=1500)
       0.28 = coord(7/25)
   

5. Frei, H.P.; Schäuble, P.: Determining the effectiveness of retrieval algorithms (1991) 0.17

   0.16899087 = sum of:
     0.16899087 = product of:
       0.46941906 = sum of:
         0.049392633 = weight(abstract_txt:dynamic in 787) [ClassicSimilarity], result of:
           0.049392633 = score(doc=787,freq=1.0), product of:
             0.13696489 = queryWeight, product of:
               1.1560158 = boost
               5.7699614 = idf(docFreq=374, maxDocs=44218)
               0.020533955 = queryNorm
             0.36062258 = fieldWeight in 787, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7699614 = idf(docFreq=374, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
         0.020424623 = weight(abstract_txt:systems in 787) [ClassicSimilarity], result of:
           0.020424623 = score(doc=787,freq=1.0), product of:
             0.09578125 = queryWeight, product of:
               1.3671443 = boost
               3.4118783 = idf(docFreq=3963, maxDocs=44218)
               0.020533955 = queryNorm
             0.2132424 = fieldWeight in 787, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4118783 = idf(docFreq=3963, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
         0.0154787265 = weight(abstract_txt:information in 787) [ClassicSimilarity], result of:
           0.0154787265 = score(doc=787,freq=2.0), product of:
             0.07233609 = queryWeight, product of:
               1.4551148 = boost
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.020533955 = queryNorm
             0.21398345 = fieldWeight in 787, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4209464 = idf(docFreq=10677, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
         0.050359588 = weight(abstract_txt:proposed in 787) [ClassicSimilarity], result of:
           0.050359588 = score(doc=787,freq=1.0), product of:
             0.17480986 = queryWeight, product of:
               1.8469583 = boost
               4.6093135 = idf(docFreq=1196, maxDocs=44218)
               0.020533955 = queryNorm
             0.2880821 = fieldWeight in 787, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.6093135 = idf(docFreq=1196, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
         0.07305117 = weight(abstract_txt:collection in 787) [ClassicSimilarity], result of:
           0.07305117 = score(doc=787,freq=2.0), product of:
             0.17779489 = queryWeight, product of:
               1.8626608 = boost
               4.648501 = idf(docFreq=1150, maxDocs=44218)
               0.020533955 = queryNorm
             0.4108733 = fieldWeight in 787, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.648501 = idf(docFreq=1150, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
         0.029583296 = weight(abstract_txt:system in 787) [ClassicSimilarity], result of:
           0.029583296 = score(doc=787,freq=1.0), product of:
             0.14035867 = queryWeight, product of:
               2.026933 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.020533955 = queryNorm
             0.21076928 = fieldWeight in 787, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
         0.045782167 = weight(abstract_txt:retrieval in 787) [ClassicSimilarity], result of:
           0.045782167 = score(doc=787,freq=2.0), product of:
             0.14904903 = queryWeight, product of:
               2.0887396 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.020533955 = queryNorm
             0.3071618 = fieldWeight in 787, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
         0.089713685 = weight(abstract_txt:shown in 787) [ClassicSimilarity], result of:
           0.089713685 = score(doc=787,freq=1.0), product of:
             0.25689182 = queryWeight, product of:
               2.238975 = boost
               5.58764 = idf(docFreq=449, maxDocs=44218)
               0.020533955 = queryNorm
             0.3492275 = fieldWeight in 787, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.58764 = idf(docFreq=449, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
         0.095633134 = weight(abstract_txt:algorithms in 787) [ClassicSimilarity], result of:
           0.095633134 = score(doc=787,freq=1.0), product of:
             0.26807114 = queryWeight, product of:
               2.2871737 = boost
               5.707926 = idf(docFreq=398, maxDocs=44218)
               0.020533955 = queryNorm
             0.35674536 = fieldWeight in 787, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.707926 = idf(docFreq=398, maxDocs=44218)
               0.0625 = fieldNorm(doc=787)
       0.36 = coord(9/25)