/**
 * Topic Extractor Service - Content Analysis for Document Organization
 * Extracts topics, keywords, and document types from text content
 */
export interface TopicMatch {
    topic: string;
    confidence: number;
    matchedKeywords: string[];
}
export interface TopicExtractionResult {
    topics: TopicMatch[];
    keywords: string[];
    language: string;
    documentType: "academic" | "business" | "technical" | "general";
}
export declare class TopicExtractorService {
    private readonly minKeywordLength;
    private readonly maxKeywords;
    private readonly minTopicConfidence;
    extractTopics(text: string): TopicExtractionResult;
    private tokenize;
    private matchTopics;
    private extractKeywords;
    private detectLanguage;
    private detectDocumentType;
    private countMatches;
}
export declare const topicExtractorService: TopicExtractorService;
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