摘要：According to the requirements and characteristics of software quality comprehensive evaluation, a matter-element extension synthesis evaluation method is introduced, and its shortcomings and problems are also discussed in the practical evaluation process. Especially, the matter-element model, correlation function, matter-element value space and multilevel metrics data transmission in the original method that can’t adapt for multi-level evaluation index system are analyzed. Moreover, the all elements and algorithm caused these shortcomings and problems have been studied and improved. Then a new multi-layer matter-element extension synthesis evaluation method is created. The metrics results and conclusion obtained by this new evaluation method are more objective, accurate and reliable than the original.
关键词：software quality;matter-element model;extension algorithm;evaluation index system;evaluation grade
