import { NNModel } from './NNModel';
export declare class Solver {
    protected readonly decayRate: number;
    protected readonly smoothEps: number;
    protected readonly stepCache: {};
    protected stepTotalNumber: number;
    protected stepNumberOfClippings: number;
    constructor(decayRate?: number, smoothEps?: number);
    private reset();
    step(model: NNModel, stepSize: number, l2Regularization: number, clippingValue: number): {
        'ratioClipped': number;
    };
    private iterateModelLayer(model, key, clipval, regc, stepSize);
    private RMSprop(modelLayer, i, stepCache);
    private gradientClipping(mdwi, clipval);
    private update(m, i, stepSize, mdwi, stepCache, regc);
    private resetGradients(currentModelLayer, i);
}