Fig. 5

Scheme for the similarity test in a system with \(K=2\). The test results positive for vector \(\varvec{\Phi }^{\mathrm{G}}_{4}\). On the contrary, the test is negative for the fifth guess point, \(\varvec{\Phi }^{\mathrm{G}}_{5}\), because it is inside the domain of the second saved point, \(\varvec{\Phi }^{\mathrm{sv}}_{2}\)