
// exp(-y|x-x'|^2)
double kernels[{0}];
double kernel;
for (i = 0; i < {0}; i++) {{
    kernel = 0.;
    for (j = 0; j < {1}; j++) {{
        kernel += pow(svs[i][j] - atts[j], 2);
    }}
    kernels[i] = exp(-{2} * kernel);
}}
