  This paper proposes an extension of Random Projection Depth (RPD) to cope
with multiple modalities and non-convexity on data clouds. In the framework of
the proposed method, the RPD is computed in a reproducing kernel Hilbert space.
With the help of kernel principal component analysis, we expect that the
proposed method can cope with the above multiple modalities and non-convexity.
The experimental results demonstrate that the proposed method outperforms RPD
and is comparable to other existing detection models on benchmark datasets
regarding Area Under the Curves (AUCs) of Receiver Operating Characteristic
(ROC).
