/**
 * Method of Optimal Direction
 */
export default class MOD {
    /**
     * @param {number} m Reduced dimension
     * @param {number} [k] Sparsity parameter
     */
    constructor(m: number, k?: number);
    _m: number;
    _k: number;
    /**
     * Initialize model.
     * @param {Array<Array<number>>} x Training data
     */
    init(x: Array<Array<number>>): void;
    _x: Matrix<number[]>;
    _d: Matrix<number>;
    /**
     * Fit model and returns reduced values.
     * @returns {Array<Array<number>>} Predicted values
     */
    fit(): Array<Array<number>>;
    _r: Matrix<T>;
    _omp(y: any): Matrix<number>;
    /**
     * Returns reduced values.
     * @returns {Array<Array<number>>} Predicted values
     */
    predict(): Array<Array<number>>;
}
import Matrix from '../util/matrix.js';