缓冲算子是否新信息优先的判别方法  

Distinguishing method of buffer operators whether meet the principle of new information priority

作　　者：吴利丰[1,2] 刘思峰[1] 姚立根[2] 

机构地区：[1]南京航空航天大学经济与管理学院,南京210016 [2]河北工程大学经济管理学院,邯郸056038

出　　处：《系统工程理论与实践》2015年第4期991-996,共6页Systems Engineering-Theory & Practice

基　　金：国家社科基金重点项目(12AZD102);国家自然科学基金(71401051);江苏省基础研究计划-青年基金项目(BK20130786);国家级教学团队基金(10td128)

摘　　要：考虑到新信息优先原理在灰色系统理论中的重要性,本文提出一种判别缓冲算子是否新信息优先的方法.利用线性最小二乘问题的扰动理论证明了常用的强化缓冲算子未能体现新数据的优先性,反而体现了老数据的优先性.即在扰动相等的情况下,越新的数据发生扰动,参数估计值的扰动界越小;越老的数据发生扰动,参数估计值的扰动界越大.实例表明了本判别方法的实用性.Taking into account the importance of principle of new information priority on grey system theory, a distinguishing method of buffer operators whether meet the principle of new information priority is put forward. It is proved that the popular strengthening buffer operator did not meet the principle of new information priority, but reflects the priority of old data by using the linear least squares perturbation theory. That is the newer data is perturbed, the smaller perturbation bound; the older data is perturbed, the larger perturbation bound under the equal perturbation. The usefulness of distinguishing method is validated by a real example.

关 键 词：灰色系统 缓冲算子 新信息优先原理 判别方法 

分 类 号：N941.5[自然科学总论—系统科学]