摘要
随机变量的数字特征———数学期望、方差等能反映分布函数的性质,但确切刻画分布函数的是特征函数,特征函数比分布函数应用起来更方便.根据特征函数的定义和性质,就运输管理中的列车牵引、设备故障等问题进行了探讨,得到了满意的结果.
The numerical feature of the random variable,such as mathematic expectancy and variance,reflects the feature of distributional function;yet it is the feature function that describes the distributional function,and promises more convenience in application.Based on the dfeinition and quality of the feature function,this paper ventures into such issues in transportation management as vehicle hauling and facility breakdown.The paper presents satisfactory results.
出处
《长沙铁道学院学报》
CSCD
北大核心
2002年第4期66-70,共5页
Journal of Changsha Railway University
关键词
特征函数
运输管理
随机变量
随机过程
feature function
transportation management
actual application
