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中文摘要：
针对传统的粗糙集模型不能有效处理具有动态特性的偏好信息系统这一缺陷，文中提出双向S-优势粗集模型。首先在双向S-粗集的基础上，引入优势关系，并将两者结合建立了基于优势关系的双向S-粗集模型。然后对该模型的性质以及该模型与优势粗糙集模型之间存在的关系进行了研究。最后通过在实例中对该模型的应用，表明该模型可成功应用于战场对敌意图识别问题。
英文摘要：
Considering the dynamic of the information system and classic rough sets can＇ t applied in it. The model of two-direction S-dom- inance rough sets is proposed. First, the dominance relation and the model of two-direction S-rough sets are combined and the approxima- tion operators of the model are defined. Then, based on the model of two-direction S-dominance rough sets, the properties of the rough approximation operators and the relation between the model and the others are studied. Finally, the model is applied in the issue of intention recognition.
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