A direct grey model of unequal gap which possesses white exponential law coincidence property is built. In the meanwhile, niche genetic algorithm to optimize model parameters is given.
建立了具有白指数律重合性的非等间隔灰色直接模型,给出了模型参数优化的小生境遗传算法。
It is found that the change of threshold voltage value fits in exponential law with absorbed dose, which is caused by the effect of space charge and interface charge.