China has established a network to monitor PM 2.5 levels nationwide, in a move meant to hasten the reduction of the country's air pollution and cut down on fraudulent data.

中国已经在全国范围内建立了一个PM 2.5监测网络，此举是为了加快减轻空气污染和减少欺诈性数据。

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For effective video communications, reduction of raw video data, rates is one of the necessary steps. Another equally important task is how to handle errors and losses in a communication network.

对于高效的视频通信，降低原始视频码率是必要的步骤之一：而另一个同等重要的任务是处理通信网络中的差错和损失。

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The reduction of original data based on rough-set theory is derived and the optimized intelligent system with rough-set neural network is established in this paper.

利用粗糙集理论对原始数据进行约简，构建优化的粗糙集—神经网络智能系统。

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