export interface ScoredEvidence {
    tokens: number;
    score?: number;
}
export declare function calculateRecallConfidence(evidence: ScoredEvidence[]): number;
export declare function shouldAskClarification(recallConfidence: number, threshold?: number): boolean;
export declare function evaluateRecallConfidence(evidence: ScoredEvidence[], threshold?: number): {
    recallConfidence: number;
    threshold: number;
    shouldAskClarification: boolean;
};