RPCA: A Novel Preprocessing Method for PCA

Figure 1

Synthetic dataset with three normally distributed classes in the three-dimensional subspace of 𝑥₀, 𝑥₁, 𝑥₂ and two noise variables 𝑥₃, 𝑥₄. (a) The subspace of 𝑥₀, 𝑥₁. (b) The subspace of 𝑥₀, 𝑥₂. (c) The subspace of 𝑥₁, 𝑥₂. (d) The subspace of 𝑥₀, 𝑥₃. (e) The subspace of 𝑥₀, 𝑥₄. (f) The subspace of 𝑥₁, 𝑥₃. (g) The subspace of 𝑥₁, 𝑥₄. (h) The subspace of 𝑥₂, 𝑥₃. (i) The subspace of 𝑥₂, 𝑥₄. (j) The subspace of 𝑥₃, 𝑥₄ [24].

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)