Decision conflict is a crucial issue of three-way decisions of multi-class. To overcome this limitation, there are mainly two ways. One is conflict resolution after decision-making, and the other is conflict resolution before decision-making. Considering insufficient information is a main cause of decision conflict, we propose a sequential approach to solve this problem by adding more detailed information step by step, which is conflict resolution during decision-making. Combining sequential approach with three methods to handle multi-class decision, which are converting m-class decision to m two-class decisions, based on pair-wise comparisons of m decision classes and directly making three-way decisions for each decision class of m-class simultaneously, we propose three sequential multi-class three-way decision models. At each level of three models, we define conflict region. In the sequential process of decision-making, for each model, only the objects belonging to one positive region with certain decision are assigned into corresponding decision classes, the objects in conflict region will be processed at the next level by adding more information sequentially. Finally, we compare the performance of three conflict resolutions and the performance of the proposed three models. Experimental results validate the effectiveness of the proposed three sequential multi-class three-way decision models.

决策冲突是多类别三路决策的关键问题。为了克服此限制，主要有两种方法。一种是决策后的冲突解决，另一种是决策前的冲突解决。考虑到信息不足是决策冲突的主要原因，我们提出了一种循序渐进的方法，通过逐步添加更详细的信息来解决此问题，这是决策过程中的冲突解决方法。组合顺序方法用三种方法来处理多类决定，其被转换米-class决定米2级的决定的基础上，成对比较米决定的类和每个决策类的直接使三通决定米同时，我们提出了三个连续的多类三向决策模型。在三个模型的每个级别，我们定义冲突区域。在顺序决策过程中，对于每个模型，只有属于某个正区域且具有一定决策的对象才被分配到相应的决策类中，将通过顺序添加更多信息，在下一级别处理冲突区域中的对象。最后，我们比较了三个冲突解决方案的性能和所提出的三个模型的性能。实验结果验证了所提出的三个顺序多类三路决策模型的有效性。