/**
 * Statistics Service
 * SOLID Principles: Single Responsibility - Handle duplication statistics and analytics only
 */
import { IStatisticsService, DuplicationGroup, DuplicationStatistics, DuplicationType } from '../interfaces/index';
export declare class StatisticsService implements IStatisticsService {
    private logger;
    calculateStatistics(duplicates: DuplicationGroup[]): DuplicationStatistics;
    estimateTechnicalDebt(duplicates: DuplicationGroup[]): {
        linesOfCode: number;
        maintenanceHours: number;
        riskScore: number;
    };
    categorizeByType(duplicates: DuplicationGroup[]): Record<DuplicationType, number>;
    categorizeBySeverity(duplicates: DuplicationGroup[]): Record<'low' | 'medium' | 'high' | 'critical', number>;
    private calculateMaintenanceHours;
    private calculateRiskScore;
    private calculateSeverity;
    private getEmptyStatistics;
    generateSummaryReport(duplicates: DuplicationGroup[]): string;
    identifyPriorityGroups(duplicates: DuplicationGroup[], topN?: number): DuplicationGroup[];
    private calculatePriorityScore;
}
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