The Research On Requirement Tracking Method Based On Multi-viewpoint Meta-model

Multi-viewpoint approach has been widely used in requirement engineering.It uses the idea of "separation of concerns" to transform complex system requirement into multi-viewpoint requirement.It is an effective method for researchers and developers to analyze and describe system requirement;However,there are still some problems in theoretical research and practical application,such as requirements' incomplete,difficulty to change management and requirements' inconsistency.In this paper,the following research mainly solved the problems of the incompleteness in requirement description,the difficulty in changing and inconsistency.By analyzing and discussing the advantages and disadvantages of traditional requirement modeling methods,this paper proposes a modeling method based on multi-viewpoint meta-model and establishes a multi-viewpoint tracking meta-model.And a tracking relationship among multi-viewpoint is established according to the relationship among meta-model elements.By calculating the tracking matrix,the traceability of requirement among multi-viewpoint meta-models can be achieved.This allows the relevant requirement to be tracked and changed as the requirement changing.Secondly,according to the requirement tracking matrix established in the previous step,this paper calculates and compares the consistency degree between conflicting requirement and other viewpoint requirement combined with the requirement correlation degree measurement method.The requirement with larger consistency degree is retained and the requirement with smaller consistency degree is abandoned.It eliminates the inconsistency of requirement during the tracking process.Finally,the feasibility of the above-mentioned method is illustrated and validated combined with the actual case of ATM system.Through the above research,by establishing a traceable relationship of requirement among multi-viewpoint meta-models,it provides an effective way for requirement changing management.Through the consistency degree measurement method,it can ensure the consistency in requirement description during the tracking process.So,the research of this paper has certain theoretical significance and application value in improving the quality of software requirement and reducing the post-dimensional cost of the system.