The upper approximation and the lower approximation operators are defined in incomplete information system. Furthermore, some related properties are discussed.
定义了一种不完备信息系统的上、下近似算子，得到了一些相关的性质。
The upper rough equal, the lower rough equal based on the random sets are used to express upper approximation operators and the lower approximation operators based on the random sets.
用基于随机集的上粗相等、下粗相等来表示随机上近似算子、随机下近似算子。
For the non-SACK test cases, I used the typical length of the delayed ACK queue reported by the client as an approximation of the lower bound of the sender's window size.
对于非sack测试用例，我使用客户机报告的延迟应答队列的典型长度作为发送方窗口大小的近似值。
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