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Title: Sentence Analysis and Generation -- a Systemic Perspective
Author: Michael O'Donnell
Email: click here to access email
Homepage: http://www.wagsoft.com/
Degree Awarded: University of Sydney , Department of Linguistics
Degree Date: 1994
Linguistic Subfield(s): Computational Linguistics
Director(s): Christian Matthiessen
Abstract:

The thesis describes a computational system for the analysis and generation of sentences using Systemic-Functional Linguistics (SFL). It represents the first description of a bi-directional system using Systemic grammar. Bi-directional systems are rare regardless of the formalism used, and are usually restricted to grammatical processing only, while the present system analyses to and generates from a semantic representation. The thesis is structured in two parts:

Part A discusses the Systemic resources used for linguistic representations (the 'grammar' of a language). The sentence is modeled tri-stratally: in terms of semantics (ideational, interactional and textual semantics), lexico-grammar, and graphology. The mapping between these strata is also described. A Systemic-Functional framework is used.

Part B describes the processes which use these resources, focusing on single-sentence analysis and generation. Theoretical issues in sentence processing are raised, with particular focus on their application to processing with a Systemic grammar.

Novel contribution has also been made in several specific areas, particularly in regards to Systemic parsing and generation on the process side, and inter-stratal mapping on the resource side. These contributions are discussed in the relevant sections.

The discussion is based on my implementation of a sentence analysis and generation system, called the WAG system -- Workbench for Analysis and Generation.
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Page Updated: 27-Nov-2009

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