Document (#12805)

Author

Gowtham, M.S.
Kamat, S.K.

Title

¬An expert system as a tool to classification

Source

Library science with a slant to documentation and information studies. 32(1995) no.2, S.57-63

Year

1995

Abstract

Describes the development by the Defence Metallurgical Research Laboratory, Hyderabad, India, of an expert system for classification of technical documents using the UDC schedule for metallurgy as knowledge base and the UDC classification rules as rule base. The scheme was modified from its enumerative structure to an analytico-synthetic structure which is best suited to such an expert system. Some benefits of the expert system are that: it interacts with the classifier making them conform to the route suggested by the classification scheme; it alerts the classifier to the minor variations in the scheme thus avoiding overlooking them; it leads to consistency in class number generation; and it ensures that the classifier has incorporated als the concepts of the subject in the class number, by leading him or her through all the groups, which is not possible in the manual scheme

Theme

Klassifikationssysteme im Online-Retrieval

Object

UDC

Similar documents (content)

1. Fidel, R.; Efthimiadis, E.N.: Terminological knowledge structure for intermediary expert systems (1995) 0.17

   0.16898037 = sum of:
     0.16898037 = product of:
       0.70408493 = sum of:
         0.059219684 = weight(abstract_txt:structure in 5695) [ClassicSimilarity], result of:
           0.059219684 = score(doc=5695,freq=3.0), product of:
             0.10042187 = queryWeight, product of:
               1.2457821 = boost
               4.3579993 = idf(docFreq=1538, maxDocs=44218)
               0.018496905 = queryNorm
             0.58970904 = fieldWeight in 5695, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.3579993 = idf(docFreq=1538, maxDocs=44218)
               0.078125 = fieldNorm(doc=5695)
         0.12789321 = weight(abstract_txt:base in 5695) [ClassicSimilarity], result of:
           0.12789321 = score(doc=5695,freq=3.0), product of:
             0.16778348 = queryWeight, product of:
               1.6102842 = boost
               5.633102 = idf(docFreq=429, maxDocs=44218)
               0.018496905 = queryNorm
             0.7622515 = fieldWeight in 5695, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.633102 = idf(docFreq=429, maxDocs=44218)
               0.078125 = fieldNorm(doc=5695)
         0.03168516 = weight(abstract_txt:system in 5695) [ClassicSimilarity], result of:
           0.03168516 = score(doc=5695,freq=1.0), product of:
             0.12026481 = queryWeight, product of:
               1.9280231 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.018496905 = queryNorm
             0.2634616 = fieldWeight in 5695, 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=5695)
         0.074333586 = weight(abstract_txt:classification in 5695) [ClassicSimilarity], result of:
           0.074333586 = score(doc=5695,freq=2.0), product of:
             0.16853161 = queryWeight, product of:
               2.2823572 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.018496905 = queryNorm
             0.44106615 = fieldWeight in 5695, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.078125 = fieldNorm(doc=5695)
         0.1925185 = weight(abstract_txt:scheme in 5695) [ClassicSimilarity], result of:
           0.1925185 = score(doc=5695,freq=2.0), product of:
             0.31783834 = queryWeight, product of:
               3.1343398 = boost
               5.4822793 = idf(docFreq=499, maxDocs=44218)
               0.018496905 = queryNorm
             0.605712 = fieldWeight in 5695, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4822793 = idf(docFreq=499, maxDocs=44218)
               0.078125 = fieldNorm(doc=5695)
         0.21843478 = weight(abstract_txt:expert in 5695) [ClassicSimilarity], result of:
           0.21843478 = score(doc=5695,freq=2.0), product of:
             0.3457582 = queryWeight, product of:
               3.2691073 = boost
               5.7180014 = idf(docFreq=394, maxDocs=44218)
               0.018496905 = queryNorm
             0.6317559 = fieldWeight in 5695, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.7180014 = idf(docFreq=394, maxDocs=44218)
               0.078125 = fieldNorm(doc=5695)
       0.24 = coord(6/25)
   

2. Chung, Y.-M.; Noh, Y.-H.: Developing a specialized directory system by automatically classifying Web documents (2003) 0.15

   0.15135035 = sum of:
     0.15135035 = product of:
       0.63062644 = sum of:
         0.023324888 = weight(abstract_txt:number in 1566) [ClassicSimilarity], result of:
           0.023324888 = score(doc=1566,freq=1.0), product of:
             0.090304844 = queryWeight, product of:
               1.1813632 = boost
               4.132649 = idf(docFreq=1927, maxDocs=44218)
               0.018496905 = queryNorm
             0.25829056 = fieldWeight in 1566, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.132649 = idf(docFreq=1927, maxDocs=44218)
               0.0625 = fieldNorm(doc=1566)
         0.06758766 = weight(abstract_txt:class in 1566) [ClassicSimilarity], result of:
           0.06758766 = score(doc=1566,freq=1.0), product of:
             0.18354516 = queryWeight, product of:
               1.6842222 = boost
               5.8917522 = idf(docFreq=331, maxDocs=44218)
               0.018496905 = queryNorm
             0.36823452 = fieldWeight in 1566, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8917522 = idf(docFreq=331, maxDocs=44218)
               0.0625 = fieldNorm(doc=1566)
         0.025348129 = weight(abstract_txt:system in 1566) [ClassicSimilarity], result of:
           0.025348129 = score(doc=1566,freq=1.0), product of:
             0.12026481 = queryWeight, product of:
               1.9280231 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.018496905 = queryNorm
             0.21076928 = fieldWeight in 1566, 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=1566)
         0.09402539 = weight(abstract_txt:classification in 1566) [ClassicSimilarity], result of:
           0.09402539 = score(doc=1566,freq=5.0), product of:
             0.16853161 = queryWeight, product of:
               2.2823572 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.018496905 = queryNorm
             0.5579095 = fieldWeight in 1566, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.0625 = fieldNorm(doc=1566)
         0.26632562 = weight(abstract_txt:classifier in 1566) [ClassicSimilarity], result of:
           0.26632562 = score(doc=1566,freq=2.0), product of:
             0.41603228 = queryWeight, product of:
               3.1055396 = boost
               7.24254 = idf(docFreq=85, maxDocs=44218)
               0.018496905 = queryNorm
             0.64015615 = fieldWeight in 1566, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.24254 = idf(docFreq=85, maxDocs=44218)
               0.0625 = fieldNorm(doc=1566)
         0.1540148 = weight(abstract_txt:scheme in 1566) [ClassicSimilarity], result of:
           0.1540148 = score(doc=1566,freq=2.0), product of:
             0.31783834 = queryWeight, product of:
               3.1343398 = boost
               5.4822793 = idf(docFreq=499, maxDocs=44218)
               0.018496905 = queryNorm
             0.4845696 = fieldWeight in 1566, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4822793 = idf(docFreq=499, maxDocs=44218)
               0.0625 = fieldNorm(doc=1566)
       0.24 = coord(6/25)
   

3. McIlwaine, I.C.: ¬A feasibility study on the restructuring of the Universal Decimal Classification into a fully-facetd classification system (1994) 0.13

   0.12903087 = sum of:
     0.12903087 = product of:
       0.6451543 = sum of:
         0.0410286 = weight(abstract_txt:structure in 7738) [ClassicSimilarity], result of:
           0.0410286 = score(doc=7738,freq=1.0), product of:
             0.10042187 = queryWeight, product of:
               1.2457821 = boost
               4.3579993 = idf(docFreq=1538, maxDocs=44218)
               0.018496905 = queryNorm
             0.40856242 = fieldWeight in 7738, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.3579993 = idf(docFreq=1538, maxDocs=44218)
               0.09375 = fieldNorm(doc=7738)
         0.08860701 = weight(abstract_txt:base in 7738) [ClassicSimilarity], result of:
           0.08860701 = score(doc=7738,freq=1.0), product of:
             0.16778348 = queryWeight, product of:
               1.6102842 = boost
               5.633102 = idf(docFreq=429, maxDocs=44218)
               0.018496905 = queryNorm
             0.5281033 = fieldWeight in 7738, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.633102 = idf(docFreq=429, maxDocs=44218)
               0.09375 = fieldNorm(doc=7738)
         0.1433751 = weight(abstract_txt:class in 7738) [ClassicSimilarity], result of:
           0.1433751 = score(doc=7738,freq=2.0), product of:
             0.18354516 = queryWeight, product of:
               1.6842222 = boost
               5.8917522 = idf(docFreq=331, maxDocs=44218)
               0.018496905 = queryNorm
             0.7811434 = fieldWeight in 7738, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.8917522 = idf(docFreq=331, maxDocs=44218)
               0.09375 = fieldNorm(doc=7738)
         0.0892003 = weight(abstract_txt:classification in 7738) [ClassicSimilarity], result of:
           0.0892003 = score(doc=7738,freq=2.0), product of:
             0.16853161 = queryWeight, product of:
               2.2823572 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.018496905 = queryNorm
             0.52927935 = fieldWeight in 7738, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.09375 = fieldNorm(doc=7738)
         0.28294325 = weight(abstract_txt:scheme in 7738) [ClassicSimilarity], result of:
           0.28294325 = score(doc=7738,freq=3.0), product of:
             0.31783834 = queryWeight, product of:
               3.1343398 = boost
               5.4822793 = idf(docFreq=499, maxDocs=44218)
               0.018496905 = queryNorm
             0.8902112 = fieldWeight in 7738, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.4822793 = idf(docFreq=499, maxDocs=44218)
               0.09375 = fieldNorm(doc=7738)
       0.2 = coord(5/25)
   

4. Madalli, D.P.; Prassad, A.R.D.: VYASA: a knowledge representation system for automatic maintenance of analytico-synthetic scheme (2003) 0.12

   0.121856816 = sum of:
     0.121856816 = product of:
       0.50773674 = sum of:
         0.07923423 = weight(abstract_txt:synthetic in 2694) [ClassicSimilarity], result of:
           0.07923423 = score(doc=2694,freq=1.0), product of:
             0.13958 = queryWeight, product of:
               1.0385431 = boost
               7.2660704 = idf(docFreq=83, maxDocs=44218)
               0.018496905 = queryNorm
             0.56766176 = fieldWeight in 2694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2660704 = idf(docFreq=83, maxDocs=44218)
               0.078125 = fieldNorm(doc=2694)
         0.096704945 = weight(abstract_txt:schedule in 2694) [ClassicSimilarity], result of:
           0.096704945 = score(doc=2694,freq=1.0), product of:
             0.15940934 = queryWeight, product of:
               1.1098641 = boost
               7.7650614 = idf(docFreq=50, maxDocs=44218)
               0.018496905 = queryNorm
             0.6066454 = fieldWeight in 2694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.7650614 = idf(docFreq=50, maxDocs=44218)
               0.078125 = fieldNorm(doc=2694)
         0.11146375 = weight(abstract_txt:analytico in 2694) [ClassicSimilarity], result of:
           0.11146375 = score(doc=2694,freq=1.0), product of:
             0.17524154 = queryWeight, product of:
               1.1636744 = boost
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.018496905 = queryNorm
             0.6360578 = fieldWeight in 2694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.078125 = fieldNorm(doc=2694)
         0.08448458 = weight(abstract_txt:class in 2694) [ClassicSimilarity], result of:
           0.08448458 = score(doc=2694,freq=1.0), product of:
             0.18354516 = queryWeight, product of:
               1.6842222 = boost
               5.8917522 = idf(docFreq=331, maxDocs=44218)
               0.018496905 = queryNorm
             0.46029314 = fieldWeight in 2694, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8917522 = idf(docFreq=331, maxDocs=44218)
               0.078125 = fieldNorm(doc=2694)
         0.044809587 = weight(abstract_txt:system in 2694) [ClassicSimilarity], result of:
           0.044809587 = score(doc=2694,freq=2.0), product of:
             0.12026481 = queryWeight, product of:
               1.9280231 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.018496905 = queryNorm
             0.372591 = fieldWeight in 2694, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.078125 = fieldNorm(doc=2694)
         0.09103968 = weight(abstract_txt:classification in 2694) [ClassicSimilarity], result of:
           0.09103968 = score(doc=2694,freq=3.0), product of:
             0.16853161 = queryWeight, product of:
               2.2823572 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.018496905 = queryNorm
             0.5401935 = fieldWeight in 2694, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.078125 = fieldNorm(doc=2694)
       0.24 = coord(6/25)
   

5. Slavic, A.; Davies, S.: Facet analysis in UDC : questions of structure, functionality and data formality (2017) 0.12

   0.121590465 = sum of:
     0.121590465 = product of:
       0.50662696 = sum of:
         0.08964329 = weight(abstract_txt:synthetic in 3848) [ClassicSimilarity], result of:
           0.08964329 = score(doc=3848,freq=2.0), product of:
             0.13958 = queryWeight, product of:
               1.0385431 = boost
               7.2660704 = idf(docFreq=83, maxDocs=44218)
               0.018496905 = queryNorm
             0.64223593 = fieldWeight in 3848, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.2660704 = idf(docFreq=83, maxDocs=44218)
               0.0625 = fieldNorm(doc=3848)
         0.12610684 = weight(abstract_txt:analytico in 3848) [ClassicSimilarity], result of:
           0.12610684 = score(doc=3848,freq=2.0), product of:
             0.17524154 = queryWeight, product of:
               1.1636744 = boost
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.018496905 = queryNorm
             0.71961725 = fieldWeight in 3848, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.0625 = fieldNorm(doc=3848)
         0.038682137 = weight(abstract_txt:structure in 3848) [ClassicSimilarity], result of:
           0.038682137 = score(doc=3848,freq=2.0), product of:
             0.10042187 = queryWeight, product of:
               1.2457821 = boost
               4.3579993 = idf(docFreq=1538, maxDocs=44218)
               0.018496905 = queryNorm
             0.38519636 = fieldWeight in 3848, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.3579993 = idf(docFreq=1538, maxDocs=44218)
               0.0625 = fieldNorm(doc=3848)
         0.025348129 = weight(abstract_txt:system in 3848) [ClassicSimilarity], result of:
           0.025348129 = score(doc=3848,freq=1.0), product of:
             0.12026481 = queryWeight, product of:
               1.9280231 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.018496905 = queryNorm
             0.21076928 = fieldWeight in 3848, 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=3848)
         0.07283174 = weight(abstract_txt:classification in 3848) [ClassicSimilarity], result of:
           0.07283174 = score(doc=3848,freq=3.0), product of:
             0.16853161 = queryWeight, product of:
               2.2823572 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.018496905 = queryNorm
             0.4321548 = fieldWeight in 3848, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.0625 = fieldNorm(doc=3848)
         0.1540148 = weight(abstract_txt:scheme in 3848) [ClassicSimilarity], result of:
           0.1540148 = score(doc=3848,freq=2.0), product of:
             0.31783834 = queryWeight, product of:
               3.1343398 = boost
               5.4822793 = idf(docFreq=499, maxDocs=44218)
               0.018496905 = queryNorm
             0.4845696 = fieldWeight in 3848, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4822793 = idf(docFreq=499, maxDocs=44218)
               0.0625 = fieldNorm(doc=3848)
       0.24 = coord(6/25)