(34) LUG & Grammar rules(A grammar descriptive framework and the grammar rules written in the form)

	Machine:     Independent
	Environment: Independent
	Language:    Prolog
	Source Code: 1.8 MB
	Documents:   Manuals (English/Japanese)

Overview

LUG, Localized Unification Grammar, is a grammar descriptive framework which is based on phrase-base approach and aims at unification grammar formalism.

Function

The LUG is a grammar descriptive framework designed for users to develop non-trivial grammar rules expressed in the DCG. In the LUG form, categories are represented as feature sets. This allows the users to write a complex constituent structure expressed in the grammar rules.

Application

The LUG formalism has been used to build grammar rules for basic coverage of Japanese language. As of now, 800-sized grammar rules are usable and are under development for the purpose of increasing coverage. The complete set of grammar rules is obtainable free from ICOT.

An important characteristic of the basic grammars is that it is orderly divided into 12 groups according to the coverage of linguistic phenomena. The grammar rules grouped according to coverages is as follows:

Elementary level(Level1 * Level4)
decision(declaratives), supposition, conjectural form(declaratives), command(imperative), aspect operators, negation, polite form, and so forth.
Intermediate level(Level5 * Level8)
passives, causatives, modal adverbs, spacio-temporal adverbs, topicalized phrases, relatives, and so forth.
Advanced level(Level9 * Level12)
conditional phrases, causal phrases, some connectives, conjunctions and disjunctions of nominal phrases.

FTP

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