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Abstract

Addresses the question whether titles of Arabic periodical articles can be used for keyword indexing techniques and for the production of Arabic title derivative printed indexes. It examines and evaluates the representativeness of Arabic article titles in five different disciplines by comparing the substantive words found in titles to the content of their accompanying topic sentences in the introduction or objectives parts of articles. Although significant difference are found between title in library and information science title in philosophy, Arabic titles appear to provide good representations of their articles. Between 70% and 88% of the substantive words in titles matched substantive words in the corresponding topic sentences

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Abstract

The chemistry schedule in the Universal Decimal Classification (UDC) is badly in need of revision. In many places it is enumerative rather than synthetic (giving rules for constructing numbers for any compound required). In principle, chemistry should be the ideal subject for a synthetic classification but many common compounds have complex formulae and a synthetic system becomes unwieldy. Also, all compounds belong to several hierarchies, e.g. chloroquin is a heterocycle, an aromatic compound, amine, antimalarial drug, etc. and rules need to be drawn up as to which ones take precedence and which ones should be taken into account in classifying a compound. There are obvious similarities between a classification and an ontology. This paper looks at existing ontologies for chemistry, especially ChEBI which is one of the largest, to examine how a classification and an ontology might draw on each other and what the problem areas are. An ontology might help in creating an index to a classification (for chemicals not listed or to provide access by facets not used in the classification) and a classification could provide a hierarchy to use in an ontology.

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Abstract

For practical purposes this 'Guide' replaces the British Standards Institution's BS 1000C: 1963. Guide to the UDC, by Jack Mills. This earlier guide was important as an aid to users of UDC world-wide and was important for its clear discussion of the underlying principles of classification in general as well as its helpful guidance in the practical application of UDC

Footnote

Rez. in: Library Association Record 96(1994) no.12, S.685 (R. Sweeney); Indexer 19(1995) no.4, S.316-317 (M. Piggott); Library resources and technical services 40(1996) no.1, S.99-101 (S.J. Smith)

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Footnote

Rez. in: Program 29(1995) no.3, S.356-357 (A. Radwanski)