-
Aitchison, J.: ¬A classification as a source for a thesaurus : the bibliographic classification of H.E. Bliss as a source of thesaurus terms and structure (1986)
0.12
0.11752635 = product of:
0.17628953 = sum of:
0.15215923 = weight(_text_:systematic in 1569) [ClassicSimilarity], result of:
0.15215923 = score(doc=1569,freq=4.0), product of:
0.28397155 = queryWeight, product of:
5.715473 = idf(docFreq=395, maxDocs=44218)
0.049684696 = queryNorm
0.5358256 = fieldWeight in 1569, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.715473 = idf(docFreq=395, maxDocs=44218)
0.046875 = fieldNorm(doc=1569)
0.024130303 = product of:
0.048260607 = sum of:
0.048260607 = weight(_text_:indexing in 1569) [ClassicSimilarity], result of:
0.048260607 = score(doc=1569,freq=2.0), product of:
0.19018644 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.049684696 = queryNorm
0.2537542 = fieldWeight in 1569, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.046875 = fieldNorm(doc=1569)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- The second edition of the Bibliographic Classidication of H.E. Bliss (BC2), being prepared under the editorship of Jack Mills, Vanda Broughton and others, is a rich source of structure and terminology for thesauri covering different subject fields. The new edition employs facet analysis and is thesaurus-compatible. A number of facet-based thesauri have drawn upon Bliss for terms and relationships. In two of these thesauri the Bliss Classification was the source of both systematic and alphabetical displays. The DHSS-DATA thesaurus, published by the United Kingdom Department of Health and Social Security, provides controlled terms and Bliss class numbers for indexing and searching the DHSS-DATA database. The ECOT thesaurus (Educational courses and occupations thesaurus) prepared for the Department of Education and Science, uses the software sedigned for the British Standards Institution ROOT thesaurus to genearte an alphabetical display from the systematic display derived from the Bliss schedules. Problems, benefits, and future prospects of Bliss-based thesaurus construction are discussed
-
Aitchison, J.; Gilchrist, A.: Thesaurus construction : a practical manual (1987)
0.02
0.018958557 = product of:
0.05687567 = sum of:
0.05687567 = product of:
0.11375134 = sum of:
0.11375134 = weight(_text_:indexing in 6869) [ClassicSimilarity], result of:
0.11375134 = score(doc=6869,freq=4.0), product of:
0.19018644 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.049684696 = queryNorm
0.59810436 = fieldWeight in 6869, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.078125 = fieldNorm(doc=6869)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- PRECIS
- Documents / Subject indexing / Thesauri / Construction
- Subject
- Documents / Subject indexing / Thesauri / Construction
-
Aitchison, J.: Indexing languages, classification schemes and thesauri (1982)
0.02
0.018768014 = product of:
0.05630404 = sum of:
0.05630404 = product of:
0.11260808 = sum of:
0.11260808 = weight(_text_:indexing in 706) [ClassicSimilarity], result of:
0.11260808 = score(doc=706,freq=2.0), product of:
0.19018644 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.049684696 = queryNorm
0.5920931 = fieldWeight in 706, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.109375 = fieldNorm(doc=706)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
