/**
 * Ridler and calvard thresholding
 */
export default class RidlerCalvardThresholding {
    /**
     * Initialize model.
     * @param {number[]} x Training data
     */
    init(x: number[]): void;
    _x: number[];
    _counts: {};
    _t: number;
    /**
     * Fit model.
     */
    fit(): void;
    /**
     * Returns thresholded values.
     * @returns {(0 | 1)[]} Predicted values
     */
    predict(): (0 | 1)[];
}