/**
 * Pattern Clustering
 *
 * Group similar patterns together for:
 * - Pattern discovery
 * - Automatic categorization
 * - Identifying recurring themes
 */
import { Pattern } from './similarity.js';
export interface Cluster {
    id: number;
    name: string;
    patterns: number[];
    centroid?: Pattern;
    avgSimilarity: number;
    tags: string[];
}
export interface ClusteringOptions {
    minSimilarity?: number;
    maxClusters?: number;
    minClusterSize?: number;
}
export declare class PatternClusterer {
    private similarity;
    constructor();
    /**
     * Cluster patterns using hierarchical clustering
     */
    cluster(patterns: Pattern[], options?: ClusteringOptions): Cluster[];
    /**
     * Find cluster for a new pattern
     */
    findClusterForPattern(pattern: Pattern, clusters: Cluster[], allPatterns: Pattern[]): number | null;
    /**
     * Build similarity matrix
     */
    private buildSimilarityMatrix;
    /**
     * Hierarchical clustering algorithm (agglomerative)
     */
    private hierarchicalClustering;
    /**
     * Calculate similarity between two clusters (average linkage)
     */
    private clusterSimilarity;
    /**
     * Calculate average similarity within cluster
     */
    private avgClusterSimilarity;
    /**
     * Find centroid pattern (most representative)
     */
    private findCentroid;
    /**
     * Generate cluster name from patterns
     */
    private generateClusterName;
    /**
     * Extract common tags from cluster
     */
    private extractClusterTags;
    /**
     * Tokenize text
     */
    private tokenize;
}
/**
 * Create pattern clusterer
 */
export declare function createPatternClusterer(): PatternClusterer;
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