Fault diagnosis includes data collection, signal analysis, feature extraction and decision making.

故障诊断包括信号采集、信号分析、特征提取、诊断决策等环节。

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Second, the paper proposed the design and implementation of threat data collection subsystem, alert correlation subsystem and attack data extraction subsystem.

随后对攻击数据采集子系统，告警关联分析子系统和攻击数据生成子系统进行了详细设计和实现。

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Second, the paper proposed the design and implementation of threat data collection subsystem, alert correlation subsystem and attack data extraction subsystem.

随后对攻击数据采集子系统，告警关联分析子系统和攻击数据生成子系统进行了详细设计和实现。

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