Research And Application Of Subjects And Objects For One Verb In Mechanical Product Design

The thesis applies application of natural language understanding system into the product design and analyses the subjects and objects for one verb subordinate to user requirements which are based on the language system. The reasons are as follows. First of all, it can therefore transform into the conceptual design to fulfill the customers' requirements in auto in basis of the features in natural language understanding. The next, it will provide sufficient support for the design of the follow-up and enhance the efficiency of product design.Firstly, it tells the natural language understanding of the product design should be mainly based on knowledge, according to natural language understanding features of product design. Secondly, this paper introduces several currently common knowledge representation methods and semantic analysis methods. Conceptual dependency theory is chosen as an important complementarity to the method based on knowledge. Thirdly, starting from the verb itself, this study on the structure of subjects and objects for one verb is classified. And combining with the concept of dependency theory, parallel relationship and ambiguity phenomena have been elaborated described. Fourthly, discuss how to deal with the structure of subjects and objects for one verb in the natural language understanding system on the basis of the above work. According to analyzing of parallel relationship and ambiguity phenomenon, the natural language understanding system can understand and achieve it. Lastly, semantic analysis of natural language understanding is applied to requirement analysis archetypal system for the design of coupling. The subjects and objects for one verb in user requirements is understood and analyzed. With other models running, the system runs well after debug.