import type { IDTree } from './decisionTreeClassifier';
export declare function treeImportances(root: IDTree | null, nFeatures: number, normalize?: boolean): number[];
export declare function normalizedTreeImportances(root: IDTree | null, nFeatures: number): number[];
export declare function averageImportances(rows: number[][]): number[];
export declare function weightedImportances(rows: number[][], weights?: number[]): number[];