/**
 * Rank results from multiple results, e.g. from vector search and text search.
 * Uses the "Reciprocal Rank Fusion" algorithm.
 * @param sortedResults The results arrays ordered by most important first.
 */
export declare function hybridRank<T extends string>(sortedResults: T[][], opts?: {
    /**
     * A constant used to change the bias of the top results in each list vs.
     * results in the middle of multiple lists.
     * A higher k means less of a bias toward the top few results.
     */
    k: number;
    /**
     * The weights of each sortedResults array.
     * Used to prefer results from one sortedResults array over another.
     */
    weights: number[];
    /**
     * The cutoff score for a result to be returned.
     */
    cutoffScore?: number;
}): T[];
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