/**
 * Returns Co-Ranking Matrix.
 * @param {Array<Array<number>>} x Reduced values
 * @param {Array<Array<number>>} z Original values
 * @param {number} ks Rank significance
 * @param {number} kt Failure tolerance
 * @returns {number} Co-Ranking Matrix value
 */
export function coRankingMatrix(x: Array<Array<number>>, z: Array<Array<number>>, ks: number, kt: number): number;