Research On Knowledge Analysis And Acquisition Methods Of Concurrent Sentences

Subjective-object structure is a special but common kind of Chinese sentences in which the subjective-object phrase plays the role as the predicate of the sentence. The predicate in subjective-object sentences is a verb object phrase which is connected with a subject predicate phrase and in the sentence the object in the verb object phrase is the subject of the subject predicate phrases.The research of knowledge acquisition in subjective-object structure is an important research direction of text knowledge acquisition. Subjective-object semantic classes were reclassified on the basis of previous research from the point of semantic classes in this paper. A new classification system of subjective-object semantic classes was created. A description framework of subjective-object semantic classes was designed from the point of subjective-object grammar and subjective-object predicate.Specific contents of this paper are as follows:(1) Research on classification of subjective-object semantic classes is the base of knowledge acquisition in subjective-object structure. In order to build a new classification system of subjective-object structure, firstly, the first predicate in the subjective-object sentences was classified into eight categories on the basis of the Framework of Semantic Taxonomy and Description. Then an induction and classification of the second predicates was made from the perspective of time sequence. Finally, the reason why some of the semantic classes cannot act as the first predicate in the subjective-object sentences was analyzed in the paper. The new classification system is more comprehensive and detailed than the existing ones. It covers almost all the subjective-object structure in text knowledge.(2) A description framework of subjective-object semantic classes including subjective-object grammar and predicate was designed in this paper. By analyzing the laws between subjective-object grammar and basic semantic grammar, we designed a subjective-object grammar combined model. The model is proved effective and feasible which had the accuracy of 96.6% by experiment results. We finally got 37637 pieces of subjective-object grammar and corresponding predicate. By using the grammar and predicate, we finally obtained the formal representation of subjective-object sentences and realized the knowledge acquisition of subjective-object sentences.