Document (#1137)

Author

Salton, G.
Fox, E.

Title

Extended Boolean information retrieval

Source

Communications of the Association for Computing Machinery. 26(1983) no.11, S.1022-1036

Year

1983

Similar documents (author)

1. Salton, G.: Another look at automatic text-retrieval systems (1986) 4.87

   4.8684025 = sum of:
     4.8684025 = weight(author_txt:salton in 1355) [ClassicSimilarity], result of:
       4.8684025 = score(doc=1355,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.12837885 = queryNorm
         4.868403 = fieldWeight in 1355, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.625 = fieldNorm(doc=1355)
   

2. Salton, G.: ¬A new comparison between conventional indexing (MEDLARS) and automatic text processing (SMART) (1972) 4.87

   4.8684025 = sum of:
     4.8684025 = weight(author_txt:salton in 2324) [ClassicSimilarity], result of:
       4.8684025 = score(doc=2324,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.12837885 = queryNorm
         4.868403 = fieldWeight in 2324, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.625 = fieldNorm(doc=2324)
   

3. Salton, G.: Future prospects for text-based information retrieval (1990) 4.87

   4.8684025 = sum of:
     4.8684025 = weight(author_txt:salton in 2326) [ClassicSimilarity], result of:
       4.8684025 = score(doc=2326,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.12837885 = queryNorm
         4.868403 = fieldWeight in 2326, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.625 = fieldNorm(doc=2326)
   

4. Salton, G.: Fast document classification in automatic information retrieval (1978) 4.87

   4.8684025 = sum of:
     4.8684025 = weight(author_txt:salton in 2330) [ClassicSimilarity], result of:
       4.8684025 = score(doc=2330,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.12837885 = queryNorm
         4.868403 = fieldWeight in 2330, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.625 = fieldNorm(doc=2330)
   

5. Salton, G.: Expert systems and information retrieval (1987) 4.87

   4.8684025 = sum of:
     4.8684025 = weight(author_txt:salton in 2836) [ClassicSimilarity], result of:
       4.8684025 = score(doc=2836,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.12837885 = queryNorm
         4.868403 = fieldWeight in 2836, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.7894444 = idf(docFreq=49, maxDocs=44421)
           0.625 = fieldNorm(doc=2836)
   

Similar documents (content)

1. Lee, J.H.; Kim, M.H.: Ranking documents in thesaurus-based Boolean retrieval systems (1994) 1.25

   1.2470245 = sum of:
     1.2470245 = sum of:
       0.023889583 = weight(abstract_txt:information in 6731) [ClassicSimilarity], result of:
         0.023889583 = score(doc=6731,freq=1.0), product of:
           0.10534634 = queryWeight, product of:
             2.4188995 = idf(docFreq=10748, maxDocs=44421)
             0.04355135 = queryNorm
           0.22677183 = fieldWeight in 6731, 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=6731)
       0.10029903 = weight(abstract_txt:retrieval in 6731) [ClassicSimilarity], result of:
         0.10029903 = score(doc=6731,freq=2.0), product of:
           0.21760468 = queryWeight, product of:
             1.4372238 = boost
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.04355135 = queryNorm
           0.46092314 = fieldWeight in 6731, 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=6731)
       0.53872436 = weight(abstract_txt:extended in 6731) [ClassicSimilarity], result of:
         0.53872436 = score(doc=6731,freq=2.0), product of:
           0.66739273 = queryWeight, product of:
             2.5169873 = boost
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.04355135 = queryNorm
           0.8072074 = fieldWeight in 6731, product of:
             1.4142135 = tf(freq=2.0), with freq of:
               2.0 = termFreq=2.0
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.09375 = fieldNorm(doc=6731)
       0.5841116 = weight(abstract_txt:boolean in 6731) [ClassicSimilarity], result of:
         0.5841116 = score(doc=6731,freq=2.0), product of:
           0.7043702 = queryWeight, product of:
             2.5857751 = boost
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.04355135 = queryNorm
           0.82926786 = fieldWeight in 6731, product of:
             1.4142135 = tf(freq=2.0), with freq of:
               2.0 = termFreq=2.0
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.09375 = fieldNorm(doc=6731)
   

2. Lee, J.H.; Kim, M.H.; Lee, Y.J.: Information retrieval based on conceptual distance in is-a hierarchies (1993) 1.22

   1.2163289 = sum of:
     1.2163289 = sum of:
       0.019907985 = weight(abstract_txt:information in 6728) [ClassicSimilarity], result of:
         0.019907985 = score(doc=6728,freq=1.0), product of:
           0.10534634 = queryWeight, product of:
             2.4188995 = idf(docFreq=10748, maxDocs=44421)
             0.04355135 = queryNorm
           0.18897653 = fieldWeight in 6728, 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=6728)
       0.05910177 = weight(abstract_txt:retrieval in 6728) [ClassicSimilarity], result of:
         0.05910177 = score(doc=6728,freq=1.0), product of:
           0.21760468 = queryWeight, product of:
             1.4372238 = boost
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.04355135 = queryNorm
           0.27160156 = fieldWeight in 6728, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.078125 = fieldNorm(doc=6728)
       0.44893697 = weight(abstract_txt:extended in 6728) [ClassicSimilarity], result of:
         0.44893697 = score(doc=6728,freq=2.0), product of:
           0.66739273 = queryWeight, product of:
             2.5169873 = boost
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.04355135 = queryNorm
           0.67267287 = fieldWeight in 6728, product of:
             1.4142135 = tf(freq=2.0), with freq of:
               2.0 = termFreq=2.0
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.078125 = fieldNorm(doc=6728)
       0.68838215 = weight(abstract_txt:boolean in 6728) [ClassicSimilarity], result of:
         0.68838215 = score(doc=6728,freq=4.0), product of:
           0.7043702 = queryWeight, product of:
             2.5857751 = boost
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.04355135 = queryNorm
           0.9773016 = fieldWeight in 6728, product of:
             2.0 = tf(freq=4.0), with freq of:
               4.0 = termFreq=4.0
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.078125 = fieldNorm(doc=6728)
   

3. Everett, D.M.; Cater, S.C.: Topology of document retrieval systems (1992) 1.14

   1.1391814 = sum of:
     1.1391814 = sum of:
       0.027871178 = weight(abstract_txt:information in 3308) [ClassicSimilarity], result of:
         0.027871178 = score(doc=3308,freq=1.0), product of:
           0.10534634 = queryWeight, product of:
             2.4188995 = idf(docFreq=10748, maxDocs=44421)
             0.04355135 = queryNorm
           0.26456714 = fieldWeight in 3308, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             2.4188995 = idf(docFreq=10748, maxDocs=44421)
             0.109375 = fieldNorm(doc=3308)
       0.18501782 = weight(abstract_txt:retrieval in 3308) [ClassicSimilarity], result of:
         0.18501782 = score(doc=3308,freq=5.0), product of:
           0.21760468 = queryWeight, product of:
             1.4372238 = boost
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.04355135 = queryNorm
           0.85024744 = fieldWeight in 3308, product of:
             2.236068 = tf(freq=5.0), with freq of:
               5.0 = termFreq=5.0
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.109375 = fieldNorm(doc=3308)
       0.4444249 = weight(abstract_txt:extended in 3308) [ClassicSimilarity], result of:
         0.4444249 = score(doc=3308,freq=1.0), product of:
           0.66739273 = queryWeight, product of:
             2.5169873 = boost
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.04355135 = queryNorm
           0.6659121 = fieldWeight in 3308, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.109375 = fieldNorm(doc=3308)
       0.4818675 = weight(abstract_txt:boolean in 3308) [ClassicSimilarity], result of:
         0.4818675 = score(doc=3308,freq=1.0), product of:
           0.7043702 = queryWeight, product of:
             2.5857751 = boost
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.04355135 = queryNorm
           0.6841111 = fieldWeight in 3308, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.109375 = fieldNorm(doc=3308)
   

4. Tammaro, A.M.: ¬La ricerca ed il recupero dell'informazione (1996) 0.95

   0.9505906 = sum of:
     0.9505906 = sum of:
       0.03378497 = weight(abstract_txt:information in 1000) [ClassicSimilarity], result of:
         0.03378497 = score(doc=1000,freq=2.0), product of:
           0.10534634 = queryWeight, product of:
             2.4188995 = idf(docFreq=10748, maxDocs=44421)
             0.04355135 = queryNorm
           0.3207038 = fieldWeight in 1000, product of:
             1.4142135 = tf(freq=2.0), with freq of:
               2.0 = termFreq=2.0
             2.4188995 = idf(docFreq=10748, maxDocs=44421)
             0.09375 = fieldNorm(doc=1000)
       0.12284072 = weight(abstract_txt:retrieval in 1000) [ClassicSimilarity], result of:
         0.12284072 = score(doc=1000,freq=3.0), product of:
           0.21760468 = queryWeight, product of:
             1.4372238 = boost
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.04355135 = queryNorm
           0.5645132 = fieldWeight in 1000, product of:
             1.7320508 = tf(freq=3.0), with freq of:
               3.0 = termFreq=3.0
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.09375 = fieldNorm(doc=1000)
       0.38093564 = weight(abstract_txt:extended in 1000) [ClassicSimilarity], result of:
         0.38093564 = score(doc=1000,freq=1.0), product of:
           0.66739273 = queryWeight, product of:
             2.5169873 = boost
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.04355135 = queryNorm
           0.5707818 = fieldWeight in 1000, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.09375 = fieldNorm(doc=1000)
       0.41302928 = weight(abstract_txt:boolean in 1000) [ClassicSimilarity], result of:
         0.41302928 = score(doc=1000,freq=1.0), product of:
           0.7043702 = queryWeight, product of:
             2.5857751 = boost
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.04355135 = queryNorm
           0.58638096 = fieldWeight in 1000, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.09375 = fieldNorm(doc=1000)
   

5. Cordón, O.; Herrera-Viedma, E.; Luque, M.; Moya Anegón, F. de; Zarco, C.: ¬An inductive query by example technique for extended Boolean queries based on simulated annealing-programming (2003) 0.91

   0.906265 = sum of:
     0.906265 = sum of:
       0.041377965 = weight(abstract_txt:information in 3757) [ClassicSimilarity], result of:
         0.041377965 = score(doc=3757,freq=3.0), product of:
           0.10534634 = queryWeight, product of:
             2.4188995 = idf(docFreq=10748, maxDocs=44421)
             0.04355135 = queryNorm
           0.3927803 = fieldWeight in 3757, product of:
             1.7320508 = tf(freq=3.0), with freq of:
               3.0 = termFreq=3.0
             2.4188995 = idf(docFreq=10748, maxDocs=44421)
             0.09375 = fieldNorm(doc=3757)
       0.07092213 = weight(abstract_txt:retrieval in 3757) [ClassicSimilarity], result of:
         0.07092213 = score(doc=3757,freq=1.0), product of:
           0.21760468 = queryWeight, product of:
             1.4372238 = boost
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.04355135 = queryNorm
           0.3259219 = fieldWeight in 3757, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             3.4765 = idf(docFreq=3732, maxDocs=44421)
             0.09375 = fieldNorm(doc=3757)
       0.38093564 = weight(abstract_txt:extended in 3757) [ClassicSimilarity], result of:
         0.38093564 = score(doc=3757,freq=1.0), product of:
           0.66739273 = queryWeight, product of:
             2.5169873 = boost
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.04355135 = queryNorm
           0.5707818 = fieldWeight in 3757, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.0883393 = idf(docFreq=273, maxDocs=44421)
             0.09375 = fieldNorm(doc=3757)
       0.41302928 = weight(abstract_txt:boolean in 3757) [ClassicSimilarity], result of:
         0.41302928 = score(doc=3757,freq=1.0), product of:
           0.7043702 = queryWeight, product of:
             2.5857751 = boost
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.04355135 = queryNorm
           0.58638096 = fieldWeight in 3757, product of:
             1.0 = tf(freq=1.0), with freq of:
               1.0 = termFreq=1.0
             6.25473 = idf(docFreq=231, maxDocs=44421)
             0.09375 = fieldNorm(doc=3757)