Search (13 results, page 1 of 1)

Lee, Y.-R.: ¬A study on the conditions of using OPAC access points and subject searching by users (1997) 0.01

0.011378597 = product of:
  0.05689298 = sum of:
    0.05689298 = weight(_text_:22 in 933) [ClassicSimilarity], result of:
      0.05689298 = score(doc=933,freq=2.0), product of:
        0.1838098 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052489646 = queryNorm
        0.30952093 = fieldWeight in 933, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0625 = fieldNorm(doc=933)
  0.2 = coord(1/5)

Source: Bulletin of library and information science. 1997, no.22, S.39-55

Yi, H.; Shubai, L.: Application of classification in information organization under the networking environment (1998) 0.01

0.011378597 = product of:
  0.05689298 = sum of:
    0.05689298 = weight(_text_:22 in 3236) [ClassicSimilarity], result of:
      0.05689298 = score(doc=3236,freq=2.0), product of:
        0.1838098 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052489646 = queryNorm
        0.30952093 = fieldWeight in 3236, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0625 = fieldNorm(doc=3236)
  0.2 = coord(1/5)

Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.1, S.19-22

Lin, W.-Y.C.: ¬The concept and applications of faceted classifications (2006) 0.01

0.011378597 = product of:
  0.05689298 = sum of:
    0.05689298 = weight(_text_:22 in 5083) [ClassicSimilarity], result of:
      0.05689298 = score(doc=5083,freq=2.0), product of:
        0.1838098 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052489646 = queryNorm
        0.30952093 = fieldWeight in 5083, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0625 = fieldNorm(doc=5083)
  0.2 = coord(1/5)

Date: 27. 5.2007 22:19:35

Pu, H.-T.: Exploration of personalized information service for OPAC (1997) 0.01

0.009956271 = product of:
  0.049781356 = sum of:
    0.049781356 = weight(_text_:22 in 1772) [ClassicSimilarity], result of:
      0.049781356 = score(doc=1772,freq=2.0), product of:
        0.1838098 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.052489646 = queryNorm
        0.2708308 = fieldWeight in 1772, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1772)
  0.2 = coord(1/5)

Date: 4. 8.1998 19:36:22

Chen, K.H.; Chiang, Y.T.: ¬The design and implementation of the Chinese IR benchmark (2000) 0.01

0.007211284 = product of:
  0.036056418 = sum of:
    0.036056418 = weight(_text_:18 in 3353) [ClassicSimilarity], result of:
      0.036056418 = score(doc=3353,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.30178496 = fieldWeight in 3353, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.09375 = fieldNorm(doc=3353)
  0.2 = coord(1/5)

Date: 17. 8.2002 18:09:59

Hsieh, Y.-s.: ¬A study on the users' perception to the body language of reference librarians (1997) 0.01

0.006009403 = product of:
  0.030047014 = sum of:
    0.030047014 = weight(_text_:18 in 2819) [ClassicSimilarity], result of:
      0.030047014 = score(doc=2819,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.25148746 = fieldWeight in 2819, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.078125 = fieldNorm(doc=2819)
  0.2 = coord(1/5)

Date: 30. 1.1999 18:43:49

Hsueh, L.-K.: ¬The application of PRECIS in indexing Chinese documents : an experimental study (1993) 0.00
```
0.0048075225 = product of:
  0.024037613 = sum of:
    0.024037613 = weight(_text_:18 in 6706) [ClassicSimilarity], result of:
      0.024037613 = score(doc=6706,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.20118998 = fieldWeight in 6706, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.0625 = fieldNorm(doc=6706)
  0.2 = coord(1/5)
```
Abstract

Describes a study aimed at exploring possible applications for PRECIS for indexing Chinese documents, generating Chinses subject indexes, and for facilitating online information retrieval. A random sample of 498 Chinese subject indexing strings was taken from the Index to Chinese Periodical Literature and a comprehensive test of the PRECIS role operators was carried out. 18 problem areas were isolated and grouped into 8 categories. These problems stemmed mainly from syntactic differences between English and Chinese. Suggests modifications of and additions to the existing role operators and the accompanying software to overcome these problems

Li, Z.: Research on dynamic morphological indexing (1998) 0.00

0.0048075225 = product of:
  0.024037613 = sum of:
    0.024037613 = weight(_text_:18 in 3242) [ClassicSimilarity], result of:
      0.024037613 = score(doc=3242,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.20118998 = fieldWeight in 3242, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.0625 = fieldNorm(doc=3242)
  0.2 = coord(1/5)

Date: 6. 3.1999 13:18:17

Lu, S.-j.: ¬A study on Chinese subject headings (1997) 0.00

0.0042065824 = product of:
  0.02103291 = sum of:
    0.02103291 = weight(_text_:18 in 1803) [ClassicSimilarity], result of:
      0.02103291 = score(doc=1803,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.17604123 = fieldWeight in 1803, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1803)
  0.2 = coord(1/5)

Date: 7. 8.1998 18:20:05

Tseng, Y.-H.: Keyword extraction techniques and relevance feedback (1997) 0.00
```
0.0042065824 = product of:
  0.02103291 = sum of:
    0.02103291 = weight(_text_:18 in 1830) [ClassicSimilarity], result of:
      0.02103291 = score(doc=1830,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.17604123 = fieldWeight in 1830, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1830)
  0.2 = coord(1/5)
```
Abstract

Automatic keyword extraction is an important and fundamental technology in an advanced information retrieval systems. Briefly compares several major keyword extraction methods, lists their advantages and disadvantages, and reports recent research progress in Taiwan. Also describes the application of a keyword extraction algorithm in an information retrieval system for relevance feedback. Preliminary analysis shows that the error rate of extracting relevant keywords is 18%, and that the precision rate is over 50%. The main disadvantage of this approach is that the extraction results depend on the retrieval results, which in turn depend on the data held by the database. Apart from collecting more data, this problem can be alleviated by the application of a thesaurus constructed by the same keyword extraction algorithm

Hsieh, Y.-s.: ¬A study on the users' perception to the body language of reference librarians (1997) 0.00

0.003605642 = product of:
  0.018028209 = sum of:
    0.018028209 = weight(_text_:18 in 2818) [ClassicSimilarity], result of:
      0.018028209 = score(doc=2818,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.15089248 = fieldWeight in 2818, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.046875 = fieldNorm(doc=2818)
  0.2 = coord(1/5)

Date: 30. 1.1999 18:44:01

Tsai, B.-s.: Infomapping in information retrieval (1997) 0.00

0.003605642 = product of:
  0.018028209 = sum of:
    0.018028209 = weight(_text_:18 in 2877) [ClassicSimilarity], result of:
      0.018028209 = score(doc=2877,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.15089248 = fieldWeight in 2877, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.046875 = fieldNorm(doc=2877)
  0.2 = coord(1/5)

Date: 6. 2.1999 18:05:14

Tseng, Y.-H.: Solving vocabulary problems with interactive query expansion (1998) 0.00

0.0030047016 = product of:
  0.015023507 = sum of:
    0.015023507 = weight(_text_:18 in 5159) [ClassicSimilarity], result of:
      0.015023507 = score(doc=5159,freq=2.0), product of:
        0.11947718 = queryWeight, product of:
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.052489646 = queryNorm
        0.12574373 = fieldWeight in 5159, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.2762048 = idf(docFreq=12340, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5159)
  0.2 = coord(1/5)

Source: Journal of library and information science. 24(1998) no.1, S.1-18

Search (13 results, page 1 of 1)

Authors

Years

Themes