/**
 * Diarization Error Rate (DER).
 *
 * DER = (false_alarm + missed_speech + speaker_confusion) / total_reference_speech_time
 *
 * Implementation:
 *  - Discretize ref and hyp at a fixed step (default 10 ms)
 *  - Find the optimal hyp->ref label mapping via Hungarian (greedy fallback for K>10)
 *  - Compare per-frame
 */
import type { DiarizationSegment } from "../types.js";
export interface DerResult {
    der: number;
    missed: number;
    falseAlarm: number;
    confusion: number;
    totalRef: number;
    totalHyp: number;
    mapping: Map<string, string>;
}
export declare function diarizationErrorRate(reference: DiarizationSegment[], hypothesis: DiarizationSegment[], step?: number): DerResult;
//# sourceMappingURL=der.d.ts.map