| Requirements processing as an important stage of software engineering throughout the entire software development process,its quality affected the quality of software engineering in a certain extent.Study found that the vast majority of software defects are due to incomplete,unclear expression caused.The traditional requirements elicitation methods are non-formal,semi-formal and formal and other methods.These methods have their advantages and disadvantages,but these methods do not need to obtain a good solution to the problems arising in the course.Based on the limitations of traditional methods,this paper will combine the requirements description of template-based method and XML-based method,proposes based on limited areas of the language requirement description method.The main contents include:1.building domain-specific areas dictionary and sentence rule base to guide the user in accordance with the method which based on sentence matching,reducing the difference between people.2.building the lexical analyzer and parser,testing the legitimacy of vocabulary and sentence which are used to descript domain requirements.3.XML allows users to customize their own markup language,using XML storage domain requirements to ensure the structural requirements,which do the groundwork for the latter part of the functional model and user model.4.building test environments,applying the vocabulary and sentence legitimacy detection algorithm to the specific requirements description,through concrete examples analysis results show that this method can reduce the error of requirements development phase,provide requirements development efficiency,but also for users and developer provides an effective way to communicate.This paper introduces the limited language,builds domain dictionary and sentence rule base.While using antlr,through testing the legality of vocabulary and sentence detection algorithm specification requirements description.And through case analysis to verify the effectiveness of method. |
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