Predicate Synonym Differentiation From The View Of Thematic-role

With the incorporation of the research achievements on Case Grammar, Valence Grammar and other directions, in this thesis, we build a description framework for representing predicates combination capabilities and combination semantic relationships based on thematic-role. In this framework, the differentiation of predicates synonym (DPS in short) with paradigmatic relationship is resolved by syntagmatic relationship. Based on this idea, DPS should be conducted with three priority levels, from grammatical function, to semantic combination relationships (thematic-role relationships), and then semantic feature. In the end DPS with the same grammatical function and thematic-role relationships could be actually handled in the observation of the semantic feature of the noun phrase who undertakes the thematic-role. For the grammatical function, differences of the predicates synonym phrase belonging to different sub-category are analyzed. For the thematic-role, a predicates thematic-role database is created based on the existing research results, on which a query could be used to retrieve thematic-role differences. It is found that the overlapping inconsistency and different default value of thematic-role are important differences for some type of predicates synonyms. For the semantic feature, eight types of them are analyzed in a closure to some degree; they are animate and inanimate, individual nouns and collective nouns, abstract and concrete, object and event, numerical information, evaluation information, subjective wills, myself and other. The corresponding type of predicate synonym phrases are searched and found. The result of this bottom-up induction for semantic feature could be beneficial for the explanation of the capability of mankind to choose symbol with similar semantic, and also for the building of lexical Knowledge Base. The description of semantic features is in-exhaustive in theory, but the extreme should be decided by synonym differentiation which leads to the clear understanding of the predicate synonym. The dissertation also presents the discussion of the existence semantic representation terms and syntax that have special semantic structure.