The time determining of domain asserts evolution based on metrics of maturity

To satisfy the requirements which have characteristics of diversity, dynamics and variability, networked software must be evolution dynamically. To this end, four metrics are defined, such as coverage rate and utilization ratio of assets base, together with cohesion and coupling values of domain problem. The first two values are used to measure validity of domain asserts, and the last two are used for determining rationality of classification of domain problem. Based on these metrics values, the evolution time is determined automatically and online evolution is triggered.