However, in general when the two nodes are in separate message flows (for example, Figure 2), you need to forward the necessary correlation information to the reply flow yourself.
然而，在一般情况下，当两个节点在单独的消息流中时(例如，图2)，您需要自己将必要的相关性信息转发给应答流。
There have been some methods to improve the fairness of MAC, but these methods all need exchange information among nodes or know the topology of network.
当前已经提出了一些方案，但是这些方案需要节点之间交换信息或者需要知道网络拓扑。
The relevance between result fragments and user information need is the sum of the contributions of the element, attribution and text nodes in the fragments.
结果片段与用户信息需求的相关性是由其中的元素、属性和文本结点的总贡献决定的。
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