pub fn center_kernel_matrix(k: &Array2<f64>) -> Result<Array2<f64>>Expand description
Center a kernel matrix in feature space
The centered kernel matrix is: K_c = K - 1_n K - K 1_n + 1_n K 1_n
where 1_n is the n x n matrix with all entries 1/n.
This corresponds to centering the data in the feature space without explicitly computing the feature map.
§Arguments
k- The kernel (Gram) matrix, shape (n, n)
§Returns
Result<Array2<f64>>- The centered kernel matrix