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Abstract:
This talk will provide an overview of unification-based
lexicalist approaches to grammar, concentrating particularly on
Head-driven Phrase Structure Grammar and Lexical-Functional
Grammar. I will emphasize some of the key features these frameworks
share, such as their emphasis on lexical explanation, the treatment
of words as integral units, an emphasis on surface-oriented
description and explanation, and the use of grammatical relations,
argument structure, semantics, and so on as important explanatory
alternatives to syntactic tree structures. This material will be
accompanied by discussion of crucial differences between
frameworks, and potential points of relevance to sentence
processing. The talk will also touch on related frameworks such as
construction grammar and categorial grammar, and the incorporation
of information structure and constructions into recent HPSG and LFG
work. Finally I will briefly mention some recent work bringing
issues ofprobabilities and optimization into these
frameworks.
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