Halliday & Matthiessen (1999: 437):
a theory of meaning may focus on the organisation of meaning itself using some framework for describing sense relations — e.g. the paradigmatic organisation of the meaning potential as in our present work; the dimensions of semantic agnation, as in (classical) componential analysis; the syntagmatic decomposition of senses as in Katz & Fodor’s theory, in interpretive semantics and in generative semantics.