import { TransformerBase } from '../base';
import { Params } from '../base/estimator';
export type ICAFunction = 'logcosh' | 'exp' | 'cube';
export interface FastICAProps {
    nComponents?: number | null;
    algorithm?: 'parallel' | 'deflation';
    whiten?: 'unit-variance' | 'arbitrary-variance' | false;
    fun?: ICAFunction;
    funArgs?: {
        alpha?: number;
    };
    maxIter?: number;
    tol?: number;
    randomState?: number;
}
export declare class FastICA extends TransformerBase {
    private nComponents;
    private algorithm;
    private whiten;
    private fun;
    private funArgs;
    private maxIter;
    private tol;
    private randomState?;
    private meanState;
    private componentsState;
    private mixingState;
    private nIterState;
    constructor(props?: FastICAProps);
    getParams(): Params;
    private nonlinearity;
    fit(X: number[][]): void;
    transform(X: number[][]): number[][];
    inverseTransform(X: number[][]): number[][];
    get components(): number[][];
    get mixing(): number[][];
    get mean(): number[];
    get nIter(): number;
}