Understanding Natural Language
Understanding Natural Language
SGS: a system for mechanical generation of Japanese sentences
COLING '80 Proceedings of the 8th conference on Computational linguistics
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The notion of UNIT-to-UNIT interaction is introduced to analyse dependency relations between words in a sentence. A UNIT is a basic framework for concept representation and is composed of many slots. After generating a parsed tree from an input sentence, our semantic interpretation begins traversing the tree from right to left to discern the case frame in a stage as early as possible, since Japanese is a language in which verb is in the sentence-final and has a case frame. UNIT-to-UNIT interaction, which is performed at each node of the parsed tree, follows a bottom-up progression. There are UNIT descriptions at terminal (bottom) nodes and the UNIT descriptions are modified or merged into other UNITs in the course of the interaction. The results of the interaction will be transferred to upper nodes. The interaction process continues on upward until the top node; at this point, the semantic structure of the input sentence is finally obtained. The notion of UNIT-to-UNIT interaction is feasibly applicable to semantic interpretation of English.