import type { KnowledgeNodeRecord, KnowledgeSourceRecord } from '../types.js';
export interface AnswerSourceRankingEvidence {
    readonly score: number;
    readonly source?: KnowledgeSourceRecord | undefined;
}
export declare function rankAnswerSources(evidence: readonly AnswerSourceRankingEvidence[], facts: readonly KnowledgeNodeRecord[]): KnowledgeSourceRecord[];
export declare function sourceAuthorityBoostForAnswer(source: KnowledgeSourceRecord): number;
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