import { Tensor, Tensor1D } from '@tensorflow/tfjs';
import { HistogramStats } from '../types';
export declare function arrayStats(input: number[]): HistogramStats;
export declare function tensorStats(input: Tensor): Promise<HistogramStats>;
export declare function confusionMatrix(labels: Tensor1D, predictions: Tensor1D, numClasses?: number, weights?: Tensor1D): Promise<number[][]>;
export declare function accuracy(labels: Tensor, predictions: Tensor): Promise<number>;
export declare function perClassAccuracy(labels: Tensor1D, predictions: Tensor1D, numClasses?: number): Promise<Array<{
    accuracy: number;
    count: number;
}>>;