combinatorial model造句

in this paper, some mathematical methods used to forecast the income of intangible assets are compared, in which we find some mathematical methods ( the forecasting model in time sequence, exponential smoothing estimation method, regressive model ) are not same with the valuing intangible assets, grey model and s-curve model are good to valuing intangible assets . in the base of this, combinatorial model is brought forward in order to make up the limitation of other mathematical me thods
本文将无形资产收益额的预测方法进行比较，发现常用的预测方法(平均数法、指数平滑法、移动平均法和回归预测模型)在预测无形资产收益额是存在很大局限性，而灰色预测模型和成长曲线模型能充分放映无形资产的收益曲线，在进行比较的基础上提出组合预测模型，以弥补各种方法的缺陷。
It's difficult to find combinatorial model in a sentence. 用combinatorial model造句挺难的