Figure 2.

Comparison between k-nearest neighbors and k-reciprocal nearest neighbors. Given an probe (in the black box), nearest neighbors of the example are shown. Examples in green boxes are those in the same class and examples in red boxes are those in different classes. (A–C) Examples from Omniglot, MiniImageNet, and FS-Market1501, respectively. The upper row in each panel is the result of k-nearest neighbors and the lower row in each panel is the result of k-reciprocal nearest neighbors. By adopting KRJD, more positive examples (those in the same class) appear in the nearest neighborhood of the probe.