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PCA多变量离群点检测:Hotelling's T2与SPE方法原理及应用指南
主成分分析(Principal Component Analysis, PCA)作为一种经典的无监督降维技术,在保留数据主要信息的同时能够有效压缩数据维度。由于PCA对数据变异性的高度敏感性,该方法在多变量异常值检测领域展现出独特的优势。 当分析任务需要建立早期预警系统以识别异常 ...
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