An example is demonstrated to illustrate the qualitative modeling procedure of the magnetization curve 文中以一实例说明磁化曲线定性模型的推导过程。
Qualitative simulation is the result of integration of artificial intelligence and the concepts of simulation in recent years which foundation is the qualitative model of the knowledge 它是建立在基于知识的定性模型的基础上,将系统的内、外部知识和数据集成为一个可推理的模型。
With integration of the information that is collected from inside and outside of this system it leads to a reasonable mechanism . each variable in the simulation is not only numerical value but also symbolized 每个变量的取值既有数值的,也有符号化的,最终通过求解该定性模型来获得对系统行为的定性描述。
Through comparing the difference between the certainty mode and actual problems of empty car distribution , the essay gives a type of stochastic chance - constrained model to simulate the problem of actual empty - car distribution 摘要通过对比空车调整问题的确定性模型与实际问题之间的差异,提出一类随机机会约束模型来模拟实际空车调整问题。
However , as a new simulation technique , qualitative simulation has encountered some difficulties during its history . the difficulty of formulating qualitative models has blocked the general application of qualitative simulation 但作为一门新的仿真理论,定性仿真在其发展过程中也遇到了一些困难,其中之一就是定性模型的建立比较困难,并因此制约着定性仿真的进一步推广和应用。