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A) The dimensionality of noise free, linear datasets (n = 3) was assessed using Parallel Analysis (PA), Levina-Bickel Maximum Likelihood Estimation (LBMLE), and Two Nearest Neighbors (TNN). Dashed line indicates the identity line. B) Same as A, but for nonlinear datasets. The curve for TNN precisely overlays that of LBMLE, causing it to be obscured.
