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The treatment of semantics in lexica for spoken language systems is less uniform than that of word forms,
and tends to be highly application-specific:
- In single word control systems, a direct mapping to an
operation or action is sufficient.
- In a dictation system , a mapping to text
is needed, with or without deeper analysis.
- Conversely, in a text-to-speech
system , a full semantic analysis is also not generally necessary.
- In a
database front end application, a translation into a database query language
- In a spoken language understanding or translation system sophisticated
kinds of semantic representation such as artificial intelligence representation
languages (semantic networks or frame structures), or more general formalisms
such as first order predicate calculus or typed attribute logics are required.
An outline of some of the basic lexical semantic relations between lexical
units was given at the beginning of this section in the context of the
discussion of relations between lexical units (lexical relations).
Reference should be made to the results of the EAGLES Computational Lexica
Working Group for further information on lexical semantics, and to standard
texts such as [Lyons (1977)] or [Cruse (1986)].
EAGLES SWLG SoftEdition, May 1997. Get the book...