Study On Semantic Analysis Of Natural Understanding Language In Product Design

With the developments of CAD & CAM in product and the improvingrequirements for mechatronics, human-computer communication environment innatural language is the necessity to intellectualized system which is the tendency infuture. Semantic analysis of natural language understanding (NLU) technique is appliedto product design in this paper by conversing the understanding results extracted fromthe analysis of users' requirements describing in natural language to the requirements orparameters of conceptual design for supporting following design as well as providingusers a fine interface. Upon the analysis of the characteristics of natural language in product designdomain and the balance of the advantages and disadvantages of several current methodsto semantic analysis of NLU, conceptual dependency theory is chosen as the maintechnique to understand restrictive Chinese with the complementarity of semantic netand other theories. Moreover, an abstract understanding process of semantic analysis ofdomain- oriented natural language, described in the mode:Concept-Event-NounConcept, is set up on the base of conceptual dependency theory. The domain-orientedNLU system is designed and implemented representing by production rules based uponthe above understanding process. Due to the importance of natural language knowledge,the system emphasizes on the disposals with knowledge as follows: the staticknowledge of design domain is represented by concept and static Event to provide asemantic base for dynamic semantic analysis; the defined templates of dynamic eventand dynamic noun designed apply reasonably static knowledge on the analysis andunderstanding process of the compound sentence. The two designs above are used todeal with compound sentence, and also establish an implementing foundation forunderstanding the meaning of paragraphs and sections. In the end, the system is appliedto requirement analysis system for mechanical product design and net-orientedintelligent tutorial system all with satisfactory results.