/**
 * Multi-signal skill practice detection.
 */
import { cosineSimilarity } from '../extraction/similarity.js';
export { cosineSimilarity };
export interface DetectionResult {
    skillMemoryId: string;
    outcome: 'success' | 'partial' | 'failure';
    difficulty: number;
    contextTags: string[];
}
export interface SkillInfo {
    id: string;
    content: string;
    tags: string[];
    embedding?: number[];
}
export interface SessionMemory {
    content: string;
    tags: string[];
    embedding?: number[];
}
/**
 * Jaccard similarity between two tag sets
 */
export declare function jaccardSimilarity(setA: string[], setB: string[]): number;
/**
 * Keyword match ratio
 */
export declare function keywordMatchRatio(skillContent: string, sessionTexts: string[]): number;
/**
 * Multi-signal skill practice detection
 * Weights: embedding 0.5 + tag overlap 0.3 + keyword 0.2
 */
export declare function detectSkillPractice(skill: SkillInfo, sessionMemories: SessionMemory[]): DetectionResult | null;
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