/**
 * Naive bayes regression
 */
export default class NaiveBayesRegression {
    /**
     * @param {boolean[]} categoryPositions Category column position
     */
    constructor(categoryPositions: boolean[]);
    _iscat: boolean[];
    _categories: any[];
    _hx: any[];
    _hy: any[];
    _hk: any[];
    _c_cand: number[];
    _d: number;
    _h: number;
    _gaussian(x: any): number;
    /**
     * Fit model.
     * @param {Array<Array<*>>} x Training data
     * @param {Array<number>} y Target values
     */
    fit(x: Array<Array<any>>, y: Array<number>): void;
    _x: any[][];
    _y: number[];
    _ymax: any;
    _ymin: any;
    /**
     * Returns predicted values.
     * @param {Array<Array<*>>} x Sample data
     * @returns {Array<number>} Predicted values
     */
    predict(x: Array<Array<any>>): Array<number>;
}