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协方差矩阵 | |||
共变量矩阵; 协方差矩阵 | |||
协*1/2差3/4卣 | |||
协变矩阵; 共差矩阵 |
covariance matrix : 36 phrases in 10 subjects |
Air defense | 1 |
Artificial intelligence | 3 |
Business | 8 |
Marketing | 1 |
Mathematics | 2 |
Oil / petroleum | 1 |
Space | 8 |
Statistics | 3 |
Technology | 8 |
United Nations | 1 |