ML_note_1

多个特征组成vector

均值 μ=1/N*∑x

协方差matrix ∑ = 1/N * ∑(x - μ)(x - μ)T


square error cause the phenomenon that when the point far from target the velocity of move will be very slow. 



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转载自blog.csdn.net/yzjincsdn/article/details/80724275