import { TransformerBase } from '../base';
import { Params } from '../base/estimator';
export interface FactorAnalysisProps {
    nComponents?: number | null;
    tol?: number;
    maxIter?: number;
    noiseVarianceInit?: number[] | null;
    rotation?: 'varimax' | 'quartimax' | null;
}
export declare class FactorAnalysis extends TransformerBase {
    private nComponents;
    private tol;
    private maxIter;
    private noiseVarianceInit;
    private rotation;
    private meanState;
    private componentsState;
    private noiseVarianceState;
    private loglikeState;
    private nIterState;
    constructor(props?: FactorAnalysisProps);
    getParams(): Params;
    fit(X: number[][]): void;
    transform(X: number[][]): number[][];
    getCovariance(): number[][];
    getPrecision(): number[][];
    get components(): number[][];
    get mean(): number[];
    get noiseVariance(): number[];
    get loglike(): number[];
    get nIter(): number;
}