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. Author manuscript; available in PMC: 2017 Mar 24.
Published in final edited form as: IEEE Signal Process Lett. 2014 Jun 5;21(10):1192–1196. doi: 10.1109/LSP.2014.2329056

Fig. 3.

Fig. 3

Illustration of out-of-sample extension: two-Swiss-roll dataset (a) out-of-sample results in {(x, y)|x ∈ [–8, 8], y ∈ [–8, 8]} using Table 3. The contour lines represent boundary between two classes form by the data points with the estimated label values equal to 0 (b) The z-axis indicates the predicted label values associated with different colors over the region.