export declare const costFnName: readonly ["CROSS_ENTROPY", "MSE", "BINARY", "MAE", "MAPE", "MSLE", "HINGE"];
export type CostFnName = typeof costFnName[number];
export type CostFn = (target: number[], output: number[]) => number;
export declare const CROSS_ENTROPY: CostFn;
export declare const MSE: CostFn;
export declare const BINARY: CostFn;
export declare const MAE: CostFn;
export declare const MAPE: CostFn;
export declare const MSLE: CostFn;
export declare const HINGE: CostFn;
export declare function getCostFn(name: CostFnName): CostFn;