Document (#23706)

Author

Chen, H.
Zhang, Y.
Houston, A.L.

Title

Semantic indexing and searching using a Hopfield net

Source

Journal of information science. 24(1998) no.1, S.3-18.

Year

1998

Abstract

Presents a neural network approach to document semantic indexing. Reports results of a study to apply a Hopfield net algorithm to simulate human associative memory for concept exploration in the domain of computer science and engineering. The INSPEC database, consisting of 320.000 abstracts from leading periodical articles was used as the document test bed. Benchmark tests conformed that 3 parameters: maximum number of activated nodes; maximum allowable error; and maximum number of iterations; were useful in positively influencing network convergence behaviour without negatively impacting central processing unit performance. Another series of benchmark tests was performed to determine the effectiveness of various filtering techniques in reducing the negative impact of noisy input terms. Preliminary user tests conformed expectations that the Hopfield net is potentially useful as an associative memory technique to improve document recall and precision by solving discrepancies between indexer vocabularies and end user vocabularies

Theme

Retrievalalgorithmen
Semantisches Umfeld in Indexierung u. Retrieval

Object

Hopfield-Netze

Aid

Hopfield-Netze

Similar documents (author)

1. Chen, H.; Houston, A.L.; Sewell, R.R.; Schatz, B.R.: Internet browsing and searching : user evaluations of category map and concept space techniques (1998) 2.12

   2.118781 = sum of:
     2.118781 = product of:
       3.1781714 = sum of:
         0.6892503 = weight(author_txt:chen in 1870) [ClassicSimilarity], result of:
           0.6892503 = score(doc=1870,freq=1.0), product of:
             0.35748172 = queryWeight, product of:
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.057940297 = queryNorm
             1.9280715 = fieldWeight in 1870, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.169829 = idf(docFreq=242, maxDocs=42740)
               0.3125 = fieldNorm(doc=1870)
         2.4889212 = weight(author_txt:houston in 1870) [ClassicSimilarity], result of:
           2.4889212 = score(doc=1870,freq=1.0), product of:
             0.8414144 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.057940297 = queryNorm
             2.9580207 = fieldWeight in 1870, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.3125 = fieldNorm(doc=1870)
       0.6666667 = coord(2/3)
   

2. Houston, J.E.: Thesaurus of ERIC (Educational Resources Information Center) descriptors : 14th ed. (2001) 1.66

   1.6592808 = sum of:
     1.6592808 = product of:
       4.9778423 = sum of:
         4.9778423 = weight(author_txt:houston in 4991) [ClassicSimilarity], result of:
           4.9778423 = score(doc=4991,freq=1.0), product of:
             0.8414144 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.057940297 = queryNorm
             5.9160414 = fieldWeight in 4991, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.625 = fieldNorm(doc=4991)
       0.33333334 = coord(1/3)
   

3. Houston, C.R.: ¬The use of reading levels as alternative classification in school libraries (2008) 1.66

   1.6592808 = sum of:
     1.6592808 = product of:
       4.9778423 = sum of:
         4.9778423 = weight(author_txt:houston in 2797) [ClassicSimilarity], result of:
           4.9778423 = score(doc=2797,freq=1.0), product of:
             0.8414144 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.057940297 = queryNorm
             5.9160414 = fieldWeight in 2797, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.625 = fieldNorm(doc=2797)
       0.33333334 = coord(1/3)
   

4. Houston, R.D.; Harmon, G.: Vannevar Bush and Memex (2007) 1.33

   1.3274246 = sum of:
     1.3274246 = product of:
       3.9822738 = sum of:
         3.9822738 = weight(author_txt:houston in 5198) [ClassicSimilarity], result of:
           3.9822738 = score(doc=5198,freq=1.0), product of:
             0.8414144 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.057940297 = queryNorm
             4.732833 = fieldWeight in 5198, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.5 = fieldNorm(doc=5198)
       0.33333334 = coord(1/3)
   

5. Houston, N.; Wall, E.: ¬The distribution of term usage in manipulative indexes (1964) 1.33

   1.3274246 = sum of:
     1.3274246 = product of:
       3.9822738 = sum of:
         3.9822738 = weight(author_txt:houston in 5471) [ClassicSimilarity], result of:
           3.9822738 = score(doc=5471,freq=1.0), product of:
             0.8414144 = queryWeight, product of:
               1.5341861 = boost
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.057940297 = queryNorm
             4.732833 = fieldWeight in 5471, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.465666 = idf(docFreq=8, maxDocs=42740)
               0.5 = fieldNorm(doc=5471)
       0.33333334 = coord(1/3)
   

Similar documents (content)

1. Chen, H.; Ng, T.: ¬An algorithmic approach to concept exploration in a large knowledge network (automatic thesaurus consultation) : symbolic branch-and-bound search versus connectionist Hopfield Net Activation (1995) 0.14

   0.13509743 = sum of:
     0.13509743 = product of:
       0.67548716 = sum of:
         0.060939983 = weight(abstract_txt:convergence in 2272) [ClassicSimilarity], result of:
           0.060939983 = score(doc=2272,freq=1.0), product of:
             0.1059995 = queryWeight, product of:
               7.358825 = idf(docFreq=73, maxDocs=42740)
               0.014404405 = queryNorm
             0.5749082 = fieldWeight in 2272, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.358825 = idf(docFreq=73, maxDocs=42740)
               0.078125 = fieldNorm(doc=2272)
         0.027836498 = weight(abstract_txt:semantic in 2272) [ClassicSimilarity], result of:
           0.027836498 = score(doc=2272,freq=1.0), product of:
             0.07921158 = queryWeight, product of:
               1.222524 = boost
               4.4981704 = idf(docFreq=1292, maxDocs=42740)
               0.014404405 = queryNorm
             0.35141957 = fieldWeight in 2272, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4981704 = idf(docFreq=1292, maxDocs=42740)
               0.078125 = fieldNorm(doc=2272)
         0.043309633 = weight(abstract_txt:network in 2272) [ClassicSimilarity], result of:
           0.043309633 = score(doc=2272,freq=2.0), product of:
             0.08441609 = queryWeight, product of:
               1.2620475 = boost
               4.643594 = idf(docFreq=1117, maxDocs=42740)
               0.014404405 = queryNorm
             0.5130495 = fieldWeight in 2272, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.643594 = idf(docFreq=1117, maxDocs=42740)
               0.078125 = fieldNorm(doc=2272)
         0.10213673 = weight(abstract_txt:tests in 2272) [ClassicSimilarity], result of:
           0.10213673 = score(doc=2272,freq=1.0), product of:
             0.21570687 = queryWeight, product of:
               2.4708178 = boost
               6.060772 = idf(docFreq=270, maxDocs=42740)
               0.014404405 = queryNorm
             0.4734978 = fieldWeight in 2272, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.060772 = idf(docFreq=270, maxDocs=42740)
               0.078125 = fieldNorm(doc=2272)
         0.44126433 = weight(abstract_txt:hopfield in 2272) [ClassicSimilarity], result of:
           0.44126433 = score(doc=2272,freq=1.0), product of:
             0.57219213 = queryWeight, product of:
               4.024201 = boost
               9.871131 = idf(docFreq=5, maxDocs=42740)
               0.014404405 = queryNorm
             0.7711821 = fieldWeight in 2272, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.871131 = idf(docFreq=5, maxDocs=42740)
               0.078125 = fieldNorm(doc=2272)
       0.2 = coord(5/25)
   

2. Manaf, N.A. Abdul; Bechhofer, S.; Stevens, R.: ¬The current state of SKOS vocabularies on the Web (2012) 0.09

   0.08692204 = sum of:
     0.08692204 = product of:
       0.4346102 = sum of:
         0.027556727 = weight(abstract_txt:semantic in 2267) [ClassicSimilarity], result of:
           0.027556727 = score(doc=2267,freq=2.0), product of:
             0.07921158 = queryWeight, product of:
               1.222524 = boost
               4.4981704 = idf(docFreq=1292, maxDocs=42740)
               0.014404405 = queryNorm
             0.3478876 = fieldWeight in 2267, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4981704 = idf(docFreq=1292, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2267)
         0.024235342 = weight(abstract_txt:useful in 2267) [ClassicSimilarity], result of:
           0.024235342 = score(doc=2267,freq=1.0), product of:
             0.09161072 = queryWeight, product of:
               1.314729 = boost
               4.8374305 = idf(docFreq=920, maxDocs=42740)
               0.014404405 = queryNorm
             0.264547 = fieldWeight in 2267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8374305 = idf(docFreq=920, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2267)
         0.1803148 = weight(abstract_txt:vocabularies in 2267) [ClassicSimilarity], result of:
           0.1803148 = score(doc=2267,freq=16.0), product of:
             0.1385568 = queryWeight, product of:
               1.6168771 = boost
               5.9491577 = idf(docFreq=302, maxDocs=42740)
               0.014404405 = queryNorm
             1.3013783 = fieldWeight in 2267, product of:
               4.0 = tf(freq=16.0), with freq of:
                 16.0 = termFreq=16.0
               5.9491577 = idf(docFreq=302, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2267)
         0.08221077 = weight(abstract_txt:associative in 2267) [ClassicSimilarity], result of:
           0.08221077 = score(doc=2267,freq=1.0), product of:
             0.20682326 = queryWeight, product of:
               1.9754353 = boost
               7.268441 = idf(docFreq=80, maxDocs=42740)
               0.014404405 = queryNorm
             0.3974929 = fieldWeight in 2267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.268441 = idf(docFreq=80, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2267)
         0.120292544 = weight(abstract_txt:maximum in 2267) [ClassicSimilarity], result of:
           0.120292544 = score(doc=2267,freq=1.0), product of:
             0.3051428 = queryWeight, product of:
               2.938734 = boost
               7.2085433 = idf(docFreq=85, maxDocs=42740)
               0.014404405 = queryNorm
             0.39421722 = fieldWeight in 2267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2085433 = idf(docFreq=85, maxDocs=42740)
               0.0546875 = fieldNorm(doc=2267)
       0.2 = coord(5/25)
   

3. Chen, H.: Machine learning for information retrieval : neural networks, symbolic learning, and genetic algorithms (1994) 0.08

   0.081941955 = sum of:
     0.081941955 = product of:
       0.51213723 = sum of:
         0.015239704 = weight(abstract_txt:user in 3658) [ClassicSimilarity], result of:
           0.015239704 = score(doc=3658,freq=1.0), product of:
             0.05301067 = queryWeight, product of:
               1.000103 = boost
               3.6797917 = idf(docFreq=2930, maxDocs=42740)
               0.014404405 = queryNorm
             0.28748372 = fieldWeight in 3658, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6797917 = idf(docFreq=2930, maxDocs=42740)
               0.078125 = fieldNorm(doc=3658)
         0.025008647 = weight(abstract_txt:indexing in 3658) [ClassicSimilarity], result of:
           0.025008647 = score(doc=3658,freq=1.0), product of:
             0.07375176 = queryWeight, product of:
               1.1796395 = boost
               4.34038 = idf(docFreq=1513, maxDocs=42740)
               0.014404405 = queryNorm
             0.3390922 = fieldWeight in 3658, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.34038 = idf(docFreq=1513, maxDocs=42740)
               0.078125 = fieldNorm(doc=3658)
         0.030624533 = weight(abstract_txt:network in 3658) [ClassicSimilarity], result of:
           0.030624533 = score(doc=3658,freq=1.0), product of:
             0.08441609 = queryWeight, product of:
               1.2620475 = boost
               4.643594 = idf(docFreq=1117, maxDocs=42740)
               0.014404405 = queryNorm
             0.36278075 = fieldWeight in 3658, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.643594 = idf(docFreq=1117, maxDocs=42740)
               0.078125 = fieldNorm(doc=3658)
         0.44126433 = weight(abstract_txt:hopfield in 3658) [ClassicSimilarity], result of:
           0.44126433 = score(doc=3658,freq=1.0), product of:
             0.57219213 = queryWeight, product of:
               4.024201 = boost
               9.871131 = idf(docFreq=5, maxDocs=42740)
               0.014404405 = queryNorm
             0.7711821 = fieldWeight in 3658, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.871131 = idf(docFreq=5, maxDocs=42740)
               0.078125 = fieldNorm(doc=3658)
       0.16 = coord(4/25)
   

4. Yang, C.C.; Luk, J.: Automatic generation of English/Chinese thesaurus based on a parallel corpus in laws (2003) 0.08

   0.07925994 = sum of:
     0.07925994 = product of:
       0.3962997 = sum of:
         0.010741438 = weight(abstract_txt:number in 2617) [ClassicSimilarity], result of:
           0.010741438 = score(doc=2617,freq=1.0), product of:
             0.066645965 = queryWeight, product of:
               1.1213728 = boost
               4.1259933 = idf(docFreq=1875, maxDocs=42740)
               0.014404405 = queryNorm
             0.16117162 = fieldWeight in 2617, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1259933 = idf(docFreq=1875, maxDocs=42740)
               0.0390625 = fieldNorm(doc=2617)
         0.019683376 = weight(abstract_txt:semantic in 2617) [ClassicSimilarity], result of:
           0.019683376 = score(doc=2617,freq=2.0), product of:
             0.07921158 = queryWeight, product of:
               1.222524 = boost
               4.4981704 = idf(docFreq=1292, maxDocs=42740)
               0.014404405 = queryNorm
             0.24849115 = fieldWeight in 2617, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4981704 = idf(docFreq=1292, maxDocs=42740)
               0.0390625 = fieldNorm(doc=2617)
         0.021654816 = weight(abstract_txt:network in 2617) [ClassicSimilarity], result of:
           0.021654816 = score(doc=2617,freq=2.0), product of:
             0.08441609 = queryWeight, product of:
               1.2620475 = boost
               4.643594 = idf(docFreq=1117, maxDocs=42740)
               0.014404405 = queryNorm
             0.25652474 = fieldWeight in 2617, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.643594 = idf(docFreq=1117, maxDocs=42740)
               0.0390625 = fieldNorm(doc=2617)
         0.03219907 = weight(abstract_txt:vocabularies in 2617) [ClassicSimilarity], result of:
           0.03219907 = score(doc=2617,freq=1.0), product of:
             0.1385568 = queryWeight, product of:
               1.6168771 = boost
               5.9491577 = idf(docFreq=302, maxDocs=42740)
               0.014404405 = queryNorm
             0.23238897 = fieldWeight in 2617, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9491577 = idf(docFreq=302, maxDocs=42740)
               0.0390625 = fieldNorm(doc=2617)
         0.312021 = weight(abstract_txt:hopfield in 2617) [ClassicSimilarity], result of:
           0.312021 = score(doc=2617,freq=2.0), product of:
             0.57219213 = queryWeight, product of:
               4.024201 = boost
               9.871131 = idf(docFreq=5, maxDocs=42740)
               0.014404405 = queryNorm
             0.54530805 = fieldWeight in 2617, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.871131 = idf(docFreq=5, maxDocs=42740)
               0.0390625 = fieldNorm(doc=2617)
       0.2 = coord(5/25)
   

5. Keen, E.M.: Presenting results of experimental retrieval comparisons (1992) 0.07

   0.07386072 = sum of:
     0.07386072 = product of:
       0.36930358 = sum of:
         0.018287646 = weight(abstract_txt:user in 3644) [ClassicSimilarity], result of:
           0.018287646 = score(doc=3644,freq=1.0), product of:
             0.05301067 = queryWeight, product of:
               1.000103 = boost
               3.6797917 = idf(docFreq=2930, maxDocs=42740)
               0.014404405 = queryNorm
             0.34498048 = fieldWeight in 3644, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6797917 = idf(docFreq=2930, maxDocs=42740)
               0.09375 = fieldNorm(doc=3644)
         0.12161192 = weight(abstract_txt:simulate in 3644) [ClassicSimilarity], result of:
           0.12161192 = score(doc=3644,freq=1.0), product of:
             0.14878719 = queryWeight, product of:
               1.1847613 = boost
               8.7184515 = idf(docFreq=18, maxDocs=42740)
               0.014404405 = queryNorm
             0.8173548 = fieldWeight in 3644, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.7184515 = idf(docFreq=18, maxDocs=42740)
               0.09375 = fieldNorm(doc=3644)
         0.041546296 = weight(abstract_txt:useful in 3644) [ClassicSimilarity], result of:
           0.041546296 = score(doc=3644,freq=1.0), product of:
             0.09161072 = queryWeight, product of:
               1.314729 = boost
               4.8374305 = idf(docFreq=920, maxDocs=42740)
               0.014404405 = queryNorm
             0.4535091 = fieldWeight in 3644, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8374305 = idf(docFreq=920, maxDocs=42740)
               0.09375 = fieldNorm(doc=3644)
         0.043186087 = weight(abstract_txt:document in 3644) [ClassicSimilarity], result of:
           0.043186087 = score(doc=3644,freq=1.0), product of:
             0.107609615 = queryWeight, product of:
               1.745156 = boost
               4.280766 = idf(docFreq=1606, maxDocs=42740)
               0.014404405 = queryNorm
             0.40132183 = fieldWeight in 3644, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.280766 = idf(docFreq=1606, maxDocs=42740)
               0.09375 = fieldNorm(doc=3644)
         0.14467165 = weight(abstract_txt:benchmark in 3644) [ClassicSimilarity], result of:
           0.14467165 = score(doc=3644,freq=1.0), product of:
             0.21046524 = queryWeight, product of:
               1.9927521 = boost
               7.332157 = idf(docFreq=75, maxDocs=42740)
               0.014404405 = queryNorm
             0.68738973 = fieldWeight in 3644, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.332157 = idf(docFreq=75, maxDocs=42740)
               0.09375 = fieldNorm(doc=3644)
       0.2 = coord(5/25)