import type { ParetoInput, ParetoResult } from './types.js';
/**
 * Pareto Analysis (80/20 Rule) — ABC Classification
 *
 * @formula Cumulative percentage-based classification
 *   - Sort items by value descending
 *   - Calculate cumulative percentage
 *   - Category A: cumulative ≤ thresholdA (default 80%)
 *   - Category B: thresholdA < cumulative ≤ thresholdB (default 95%)
 *   - Category C: cumulative > thresholdB
 *
 * @reference Juran, J.M. "Juran's Quality Handbook", 5th Ed.
 */
export declare function paretoAnalysis(input: ParetoInput): ParetoResult;
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