Improved Dynamic Optimized Kernel Partial Least Squares for Nonlinear Process Fault Detection

Algorithm 1

RKPLS algorithm.

(1)	Calculate and determine the kernel matrix and next center;
(2)	Set i = 1, , ;
(3)	Randomly initialize equal to any column of ;
(4)	, ;
(5)	;
(6)	, ;
(7)	If converge, go to (8), else return to (3);
(8)	Deflate K and Y;
(9)	Repeat steps 3 to 6 to extract more latent variables
(10)	Obtain the cumulative matrices.