Unification-based paradigmatic morphology: A theoretically-motivated approach to computational morphology.
Material type:
TextDescription: 182 pISBN: 0599977655Subject(s): Language, Linguistics | Computer Science | 0290 | 0984Dissertation note: Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000. Summary: The purpose of this thesis is two-fold: first, to propose an approach to morphology based on unification and non-biased towards specific types of morphological processes. Second, to design and implement a met language to express analyses in this unification-based framework. Thus, this language is not committed to any particular morphological process. It has been implemented in generation only as a way of testing its descriptive adequacy.Summary: The natural languages used to test the approach are Rench and Arabic, which exhibit different morphological devices: templatic morphology (Arabic) and concatenative morphology (French and Arabic). As for the coverage of the morphology of a particular language, it is limited to verb inflection.Summary: A morphological component is crucial to the organization of the lexicon. The view of the lexicon adopted in this project is akin to Head-Driven Phrase Structure Grammar's (HPSG), where the lexicon is a collection of feature structures organized in a hierarchy. However, not all the mechanisms present in HPSG will be found here: there are no lexical rules in the present approach.Summary: This thesis adopts the Word and Paradigm (WP) model of morphology: words are basic units of morphology, and are organized in paradigms. The approach proposed by this thesis differs from other WP approaches in that words are represented by partially specified structures. Indeed, it relies on two fundamental notions: feature structure descriptions and unification. Feature structure descriptions are partial descriptions of linguistic objects, and combine with other feature structure descriptions through unification. Thus, words are represented by feature structure descriptions, which unify with other feature structure descriptions to define inflected words. The morphological component proposed by this thesis is then a set of paradigms, whose entries are partially specified words. These entries capture properties common to sets of words, and unify with entries of other paradigms to yield classical paradigms of inflected words.Summary: This approach has been implemented in Prolog, a language particularly suited for applications based on unification. The contribution of this thesis to the field of computational morphology is discussed and contrasted with other approaches such as the finite-state and the inheritance network approaches.
Source: Dissertation Abstracts International, Volume: 61-10, Section: A, page: 3977.
Adviser: Jerry L. Morgan.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000.
The purpose of this thesis is two-fold: first, to propose an approach to morphology based on unification and non-biased towards specific types of morphological processes. Second, to design and implement a met language to express analyses in this unification-based framework. Thus, this language is not committed to any particular morphological process. It has been implemented in generation only as a way of testing its descriptive adequacy.
The natural languages used to test the approach are Rench and Arabic, which exhibit different morphological devices: templatic morphology (Arabic) and concatenative morphology (French and Arabic). As for the coverage of the morphology of a particular language, it is limited to verb inflection.
A morphological component is crucial to the organization of the lexicon. The view of the lexicon adopted in this project is akin to Head-Driven Phrase Structure Grammar's (HPSG), where the lexicon is a collection of feature structures organized in a hierarchy. However, not all the mechanisms present in HPSG will be found here: there are no lexical rules in the present approach.
This thesis adopts the Word and Paradigm (WP) model of morphology: words are basic units of morphology, and are organized in paradigms. The approach proposed by this thesis differs from other WP approaches in that words are represented by partially specified structures. Indeed, it relies on two fundamental notions: feature structure descriptions and unification. Feature structure descriptions are partial descriptions of linguistic objects, and combine with other feature structure descriptions through unification. Thus, words are represented by feature structure descriptions, which unify with other feature structure descriptions to define inflected words. The morphological component proposed by this thesis is then a set of paradigms, whose entries are partially specified words. These entries capture properties common to sets of words, and unify with entries of other paradigms to yield classical paradigms of inflected words.
This approach has been implemented in Prolog, a language particularly suited for applications based on unification. The contribution of this thesis to the field of computational morphology is discussed and contrasted with other approaches such as the finite-state and the inheritance network approaches.
School code: 0090.
There are no comments on this title.