import type { SearchResult } from '../types/index.js';
/**
 * Combines and ranks search results from multiple search methods
 */
export declare class SearchRanking {
    /**
     * Combines results from multiple search methods with weighted scoring
     */
    combineResults(fulltextResults: SearchResult[], titleResults: SearchResult[], semanticResults: SearchResult[]): SearchResult[];
    /**
     * Calculates weighted total score
     */
    private calculateTotalScore;
    /**
     * Normalizes scores to 0-100 range
     */
    normalizeScores(results: SearchResult[]): SearchResult[];
    /**
     * Deduplicates results (keeps highest scoring)
     */
    deduplicateResults(results: SearchResult[]): SearchResult[];
    /**
     * Filters results by minimum score threshold
     */
    filterByScore(results: SearchResult[], minScore: number): SearchResult[];
}
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